oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2018 ( 4 )

2016 ( 1 )

2015 ( 67 )

2014 ( 99 )

Custom range...

Search Results: 1 - 10 of 1111 matches for " Fritz Hieke "
All listed articles are free for downloading (OA Articles)
Page 1 /1111
Display every page Item
A new species of Amara (Coleoptera, Carabidae, Zabrini) from Sichuan Province, China, with additional records for other Amara species from the region
Fritz Hieke,David Kavanaugh,Hongbin Liang
ZooKeys , 2012, DOI: 10.3897/zookeys.254.4223
Abstract: A new species, Amara (Bradytulus) shalulishanica Hieke & Kavanaugh, sp. n. (type locality: Haizishan Yakou, 29.47366°N, 100.21921°E, 4623 m, Shalulishan, Dishan Township, Litang County, Sichuan Province, China) is described and diagnosed. Additional records are provided for 16 other Amara species, each of which represents one of five different geographical distribution types, which are discussed.
Different response of the crystal structure to isoelectronic doping in BaFe2[As(1-x)P(x)]2 and [Ba(1-x)Sr(x)]Fe2As2
Marianne Rotter,Christine Hieke,Dirk Johrendt
Physics , 2010, DOI: 10.1103/PhysRevB.82.014513
Abstract: Superconductivity up to 30 K in charge neutrally doped BaFe2[As(1-x)P(x)]2 has been ascribed to chemical pressure, caused by the shrinking unit cell. But the latter induces no superconductivity in [Ba(1-x)Sr(x)]Fe2As2 in spite of the same volume range. We show that the spin-density-wave (SDW) state of BaFe2As2 becomes suppressed in BaFe2[As(1-x)P(x)]2 by a subtle reorganization of the crystal structure, where arsenic and phosphorus are located at different coordinates z(As), z(P). High-resolution X-ray diffraction experiments with BaFe2[As(1-x)P(x)]2 single crystals reveal almost unchanged Fe-P bonds, but a contraction of the Fe-As bonds, which remain nearly unchanged in [Ba(1-x)Sr(x)]Fe2As2. Since the Fe-As bond length is a gauge for the magnetic moment, our results show why the SDW is suppressed by P-, but not by Sr-doping. Only the Fe-P interaction increases the width of the iron 3d bands, which destabilizes the magnetic SDW ground state. The simultaneous contraction of the Fe{As bonds is rather a consequence of the vanishing magnetism. Ordered structure models of BaFe2[As(1-x)P(x)]2 obtained by DFT calculations agree perfectly with the single-crystal X-ray structure determinations. The contraction of the Fe-As bonds saturates at doping levels above x = 0.3, which corrects the unreasonable linear decrease of the so-called pnictide height.
Climate Change Favors Grapevine Production in Temperate Zones  [PDF]
Bruno Koch, Fritz Oehl
Agricultural Sciences (AS) , 2018, DOI: 10.4236/as.2018.93019
Abstract: Wine production has a long-standing history in Palatinate (Southwestern Germany), dating back to Roman times. Especially “Riesling”, but also several “Pinot” varieties gained major significance. Red wine varieties gained prominence over the last 20 years only, which may be a consequence of climate change. Our objective was to review temperature and rainfall data over the last 40 years, measured “on-winery” in Hainfeld and correlate these data with grapevine growth parameters: the development of bud break, flowering, veraison and harvest dates, yields and grape sugar concentrations of “Pinot Gris”, “Pinot Noir”, “Riesling”, “Silvaner” and “Müller-Thurgau”. Since the 1970s, bud break, flowering and veraison are 11 - 15, 18 - 22 and 16 - 22 days earlier; harvest dates are 25 - 40 days earlier. Sugar concentrations increased significantly, but yields decreased. Annual rainfall has not significantly risen, while the mean annual minimum and maximum air-temperatures rose by ~0.9°C, and by ~3.4°C, respectively, resulting in an average increase of the mean annual temperature of ~2.1°C. Remarkably, both mean monthly minimum and maximum temperatures rose especially in springtime, which should have been the driver for earlier bud break and flowering. A change in the climatic conditions, therefore, appears to be one of the key reasons for more favorable grapevine production in Palatinate, especially for “Pinot Noir”, which showed the highest increase in sugar concentrations. The Huglin-index, a measure for the suitability of growing specific grapevine varieties in given environments, increased from 1685 to 2063. According to this index, the climate change may be favorable already for growing grape varieties so far rarely grown in temperate zones, such as “Cabernet Sauvignon”, “Syrah” and “Tempranillo” that are more suited to warmer, Mediterranean climates.
Re-Finding PL.AC.E. for Walking: Assessment of Key-Elements Using Questionnaire  [PDF]
Fritz Akhmad Nuzir, Bart Dewancker
Current Urban Studies (CUS) , 2015, DOI: 10.4236/cus.2015.34023
Abstract: Many studies had already been conducted to acknowledge the contribution of walking in sustainable urban development. After conducting a literature study, authors identified the 3 (three) keyelements and introduced them as PL.AC.E. (abbreviation of Profile, Activity, and Environment), of the pedestrian. The Pedestrian Profile was defined as a combination of the following key-attributes: age; financial income; physical condition; gender; mobility choice; employment and education; social cultural capital; pedestrian type; and public transportation usage. The Pedestrian Activity was defined from the key-attributes as follow: walking-related purposes; social interaction; walking intensity; walking habits; and transport modes interaction. Then the Pedestrian Environment was defined within key-attributes of: spatial planning; walk-ability; neighborhood livability; traffic safety; pedestrian facilities (hard elements); pedestrian facilities (soft elements); and environmental quality. In this study, authors would assess those key-elements by distributing a questionnaire to a group of freshmen of the Department of Architecture in the University of Kitakyushu, Japan as a trial experiment. Total 58 responses were recorded and then analyzed using correlations type statistical analysis. It was then concluded that there are indications that those key-elements could be addressed in the planning process of a walk-able urban environment. However in order to validate the result, authors would continue to further distribute the questionnaire to various respondents within different case study areas.
Helicobacter pylori and gastric cancer
EL Fritz
Continuing Medical Education , 2009,
Abstract: Gastric cancer is a common form of cancer which generally has a poor prognosis.
Loewy decomposition of linear differential equations
Fritz Schwarz
Bulletin of Mathematical Sciences , 2013, DOI: 10.1007/s13373-012-0026-7
Abstract: This paper explains the developments on factorization and decomposition of linear differential equations in the last two decades. The results are applied for developing solution procedures for these differential equations. Although the subject is more than 100 years old, it has been rediscovered as recently as about 20 years ago. A fundamental ingredient has been the easy availability of symbolic computation systems to accomplish the extensive calculations usually involved in applications; to this end the interactive website http://www.alltypes.de has been provided. Although originally only developed for ordinary equations, it has been extended to large classes of partial equations as well. In the first part Loewy’s results for ordinary equations are outlined. Thereafter those results of differential algebra are summarized that are required for extending Loewy’s theory to partial equations. In the remaining part a fairly complete discussion of second- and some third-order partial differential equations in the plane is given; it is shown that Loewy’s result remains essentially true for these equations. Finally, several open problems and possible extensions are discussed.
Guamán Poma de Ayala como traductor indígena de textos culturales: La Nueva Corónica y Buen Gobierno (c. 1615)
Sabine Fritz
Fronteras de la Historia , 2005,
Abstract: La conquista y la colonización del reino de los incas (1532) pueden ser caracterizadas como un gigantesco acto de traducción entre diferentes textos culturales y distintos métodos de transmisión. Los traductores tenían una función mediadora entre conquistadores y conquistados en la sociedad colonial y desempe aban un papel importante y poderoso en el proceso de oscilación de códigos culturales y de negociación de identidades y alteridades. Un ejemplo de traducción de textos culturales es la Nueva Corónica y Buen Gobierno (c 1615), escrita por Felipe Guamán Poma de Ayala. Este artículo analiza los textos culturales que conoce el autor y la posición en la que se ve a sí mismo. Por un lado, se muestra cómo funciona el proceso de transmisión de textos culturales andinos, originariamente de manera oral, al medio de la escritura; por otro lado, se llama la atención sobre las estructuras del poder subyacentes en el proceso de la traducción.
G.J. van Wyk (Tegn. Red.), A.E. Cloete, A. Jordaan, H.C. Liebenberg en H.J. Lubbe. Etimologiewoordeboek van Afrikaans (eerste fase).
Fritz Ponelis
Lexikos , 2011, DOI: 10.5788/12--779
Abstract: Daar is in die onlangse paar dekades bloedweinig oor die Afrikaanse etimologie gepubliseer. Die "jongste" samevatting is Boshoff en Nienaber 1967; vergelyk ook ? naas 'n verskeidenheid voortreflike studies deur Scholtz, waaronder Scholtz 1972 ?, Smith 1962 ('n versameling koerantartikels uit die laat negentiendertigerjare), Combrink 1969 en Franken 1953. Die mees resente bydrae tot die Afrikaanse etimologie kom uit 'n heel onverwagte oord, die Engelse leksikografie, met name Silva 1996, 'n bron wat ruim deur Etimologiewoordeboek van Afrikaans benut word.
Hacia una reconstitución de los procedimientos artísticos magdalenienses: contribución del análisis microscópico en el campo del arte mueble
Fritz, Carole
Trabajos de Prehistoria , 1997,
Abstract: Not available [es] A partir del postulado de que el proceso de realización de un objeto del arte mueble magdaleniense tiene una cierta tradición técnica que puede expresar valores cognitivos y culturales, este trabajo se orienta hacia la percepción de las técnicas de grabado en hueso. El análisis de 90 objetos del sudoeste de Francia ha puesto en evidencia gestos que se repiten en este proceso y fórmulas gráficas que no parecen características de grupos locales o regionales. No existe un estilo técnico propio de UAriège o de la Gironde. Los Magdalenienses parecen tener un fondo técnico común. [fr] Vers une reconstitution des procédés artistiques magdaléniens: contribution de l'analyse microscopique dans le domaine de l'art mobilier. En partant du postulat que l'objet d'art mobilier magdalénien est porteur d'une certaine tradition technique qui peut exprimer des valeurs cognitives et culturelles; nous avons orienté notre travail vers la perception de ces valeurs à travers la compréhension des techniques de gravure sur os. L'examen d'un corpus de 90 objets provenant du grand sud-ouest de la France a mis en évidence des récurrences gestuelles et des recettes graphiques qui ne paraissent pas caractéristiques de groupes locaux ou régionaux. Techniquement, il n'existe pas de manière de faire propre à r Ariège ou à la Gironde ... Les Magdaléniens semblent posséder un fonds technique commun.
The Price of Unification : The Emergence of Health & Welfare Policy in Pre-Bismarckian Prussia
Dross, Fritz
Hygiea Internationalis : an Interdisciplinary Journal for the History of Public Health , 2007,
Abstract: The article aims to give a concise overview on the health and social welfare politics of the kingdom of Prussia in the 19th century. Considering that Prussia in 19th century was a highly fragmented territory in terms of economical and social structure this is understood as part of unification policy. 19th century social welfare policy was not restricted on enacting poor law but comprised as different fields as industrial codes, municipal codes and sanitary police. At the same time, until the workers' insurance of the 1880ies the state itself did not immediatly contribute to health care provision and poor relief but only set the legislative frame. On the other hand, still workers insurance in the Bismarckian era not mainly intended social balance but the unification of the new "Reich" and was a powerful tool of the internal foundation of the new empire of 1871.
Page 1 /1111
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.