bluuebunny/crossref_metadata_2025_split huggingface dataset:
Heavy Fermion Behaviour in Ce2Ni1.88Cd
Authors: Sampathkumaran Echur V. , Iyer Kartik K. , Mohapatra Niharika , Rayaprol Sudhindra , Pöttgen Rainer 
Published: February 2015

Abstract
The intermetallic compound Ce2Ni1.88Cd (tetragonal Mo2FeB2-type structure) has been investigated by magnetization (down to 1.8 K), electrical resistivity (ρ) and heat capacity (down to 0.5 K) measurements as a function of temperature (T). On the basis of these data, it is concluded that this compound is a heavy-fermion with a Kondo temperature in the range 235 - 250 K. Fermi-liquid behaviour expected for Kondo lattices is obeyed for the low temperature ρ data, but the ratio of the coefficient of the T2 term in the electrical resistivity to the square of the linear coefficient of the heat capacity is apparently low compared to the ‘universal ratio’ known for other cerium compounds, as though there is a breakdown of the Kadowaki-Woods relation in this compound. The value of this ratio falls in the range known for many intermediate-valent ytterbium compounds.
Superstructures in Room-temperature Ordered Deuterides CeCuSiDx and CeCuGeDx
Authors: Pasturel Mathieu , Weill François , Bobet Jean-Louis 
Published: February 2015

Abstract
Crystallographic superstructures in the deuterides CeCuSiD1.64(5) and CeCuGeH1.15(5) have been characterized by neutron diffraction. Deuterium atoms are inserted in [Ce3Cu] and [Ce3Si] or [Ce3Ge] tetrahedral sites available in the hexagonal ZrBeSi-related structure of these deuterides. A partial but ordered occupancy of these tetrahedra by D atoms induces the occurrence of superstructures along the c axis, and the CeCuXDy structures can be described with a c parameter multiplied by 3 and 7 for X = Ge and Si, respectively, in comparison with the c parameters of the ZrBeSi-type subcells.
Refinement of the Crystal Structures of Palladium-rich In-Pd Compounds by X-Ray and Neutron Powder Diffraction
Authors: Kohlmanna Holger , Ritter Clemens 
Published: February 2015

Abstract
The ternary indium palladium intermetallics In3Pd5, InPd2, and InPd3 have been synthesized by iodine-catalyzed reactions from the elements. Rietveld refinements on X-ray powder diffraction patterns provide the first accurate crystal structure data for In3Pd5 (Pbam, No. 55, a = 1104.20(2), b = 561.346(8), c = 424.263(6) pm, Rh5Ge3-type) and InPd2 (Pnma, No. 62, a = 561.676(6), b = 421.710(4), c = 822.78(8) pm, Co2Si-type). X-Ray powder diffraction apparently confirms the TiAl3 structure type proposed in the literature for InPd3. However, Rietveld refinement on neutron powder diffraction data reveals an In/Pd distributional disorder. Therefore, we describe the crystal structure of InPd3 in a AuCu-type model instead (P4/mmm, No. 123, a = 287.224(4), c = 380.079(7) pm), with mixed occupancy of one crystallographic site by 50% In and 50% Pd. In contrast to In3Pd5 and InPd2, which can be considered to be line compounds, InPd3 shows a non-negligible homogeneity range with unit cell volumes ranging from 0.126132(5) nm3 for the indium-rich to 0.125474(8) nm3 for the palladium-rich In1+xPd3−x phases. Mean In-Pd distances in these indium palladium intermetallics range from 272.3 pm (In1 in In3Pd5) with coordination number 8 for indium to 281.2 pm for 12-coordinated In in InPd3.
Ag10Te4Br3 –xClx and Ag10Te4Br3 –yIy: Structural and Electrical Property Tuning of a Mixed Conductor by Partial Anion Substitution
Authors: Nilges Tom , Bawohl Melanie , Lange Stefan 
Published: February 2015

Abstract
X-ray powder and EDX phase analyses, thermal analyses, impedance spectroscopic measurements, and crystal structure determinations of selected phases are reported to highlight the structural and electric properties of the solid solutions Ag10Te4Br3−xClx and Ag10Te4Br3−yIy. Bromide can be partially substituted by chloride or iodide up to x = 1.6 and y = 0.2, respectively, without changes in the structural properties of the tetramorphic, ion-conducting Ag10Te4Br3. Results from X-ray powder phase analyses have been complemented by data of single crystal structure determinations of selected samples. At r. t. the fully ordered γ -Ag10Te4Br3 structure type is realized in all chloride containing phases, but a partial iodide substitution leads to the stabilization of the disordered β -Ag10Te4Br3 structure type. Impedance spectroscopic measurements reveal a significant increase by one order of magnitude of the r. t. silver ion conductivity of Ag10Te4Br2.8I0.2 as compared with Ag10Te4Br3.
Magnetocaloric and Thermal Properties of Ho(Co1–xSix)2 Compounds
Authors: Sechovský Vladimír , Vasylyev Denys , Prokleška Jan 
Published: February 2015

Abstract
The specific heat and thermal conductivity of HoCo2 and Ho(Co0.95Si0.05)2 were measured as functions of temperature in several constant magnetic fields up to 8 T. From a specific-heat data analysis the isothermal entropy change and the magnetocaloric effect (MCE) have been evaluated in a wide temperature range for several values of the applied magnetic field. The considerable values of the magnetocaloric effect in the vicinity of the magnetic ordering transition are qualifying both compounds as suitable for magnetic refrigeration purposes. The magnetic phase transition temperature (TC) increases from 77 K for HoCo2 to 103 K for Ho(Co0.95Si0.05)2 while the large MCE in the vicinity of TC is maintained, which demonstrates ways of tuning the operating temperatures of the magnetic refrigerant.
Orthoamide, LXV [1]. Kondensationsreaktionen von Amidinen, Guanidinen, Hydrazin und Hydrazin-Derivaten mit Orthoamiden von Alkincarbonsäuren / Orthoamides,LXV [1]. Condensation Reactions of Amidines, Guanidines, Hydrazine and Hydrazine Derivatives with Orthoamides of Alkyne Carboxylic Acids
Authors: Kantlehner Willi , Mezger Jochen , Stieglitz Rüdiger , Edelmann Kai , Lehmann Hansjörg , Vettel Markus , Kreß Ralf , Frey Wolfgang , Ladendorf Sebastian 
Published: February 2015

The orthoamide derivatives 4 react with amidines 10 and guanidines 11 to give 4-dimethylaminopyrimidines 12. The 3-dimethylamino-pyrazoles 13a - c can be prepared from orthoamides 4 and hydrazine. The hydrazine derivative 14, whose constitution was established by crystal structure analysis, is obtained in low yield when hydrazine is added dropwise to a boiling solution of 4d in THF.
Methyl- and phenylhydrazine, undergo reaction with the orthoamides 4a, c yielding mixtures of the isomeric pyrazoles 19 and 20. The reaction of 4c with acylhydrazines 21a - e affords the pyrazole 13b. The pyrazole 26 is produced in the reaction of 4a and acet-hydrazide according to this scheme, whereas 4a reacts with aromatic acid hydrazides 21c - e to give condensation products, which are presumably amidrazones 28. The 4,5-diaza-octatetraene derivative 30 results from the reaction of 4c with p-toluenesulfonylhydrazide. Ketene aminals 34a - c are the products of the reaction of the orthoamides 4b - d with 4,4-dimethylthiosemicarbazide 34, which cyclize on heating to give highmelting pyrazolethiones 35a - c. According to the crystal structure analysis of 35c the compounds have zwitterionic character and are associated via hydrogen bridges in the solid state.
Hydrate von Li3VO4: Synthese und Strukturchemie / Hydrates of Li3VO4: Synthesis and Structural Chemistry
Authors: Schnabel Simone , Röhr Caroline 
Published: February 2015

Stoichiometric hydrates of Li3VO4, the hexahydrate and two polymorphs of the octahydrate, were prepared by evaporation of alkaline aqueous solutions 1 molar in LiOH and 0.5 molar in the metavanadate LiVO3 at r. t. with or without the addition of Lithium sulfide, i. e. at different pH values. Their crystal structures have been determined and refined using single crystal X-ray data; all lithium and hydrogen atom positions were localised and refined without contraints.
All three title compounds crystallise in non-centrosymmetric space groups. The water molecules belong to the tetrahedral coordination spheres of the Li cations, i. e. they are embedded as water of coordination exclusively. The tetrahedral orthovanadate(V) anions VO3−
4 and the LiO4 tetrahedra are connected via common O corners to form building units which are further held together by strong, nearly linear hydrogen bonds.
The hexahydrate Li3VO4 ・ 6H2O (space group R3, a = 962.9(2), c = 869.2(2) pm, Z = 3, R1 = 0.0260) contains isolated orthovanadate(V) anions VO3−
4 surrounded by a 3D network of cornersharing Li(H2O)4 tetrahedra forming rings of three, seven and eight units. The water molecules are ‘isolated’ in the sense that no hydrogen bonds are formed between water molecules.
The octahydrate is dimorphous: The triclinic polymorph of Li3VO4 ・ 8H2O (space group P1, a = 592.6(2), b = 651.3(2), c = 730.2(4) pm, α = 89.09(2), β = 89.43(2), γ = 88.968(12)°, Z = 1, R1 = 0.0325) contains two types of chains of tetrahedra: One consists of corner-sharing Li(H2O)4 tetrahedra only, the second one is formed by alternating LiO4 and VO4 tetrahedra, also sharing oxygen corners. Only one water molecule is ‘isolated’, the other seven form a branched fragment of a chain with hydrogen bonds between them.
In the monoclinic form of Li3VO4・8H2O (space group Pc, a = 732.6(1), b = 653.7(1), c = 1292.9(3) pm, β = 112.21(1)°, Z = 2, R1 = 0.0289) a fragment of a chain of three LiO4 tetrahedra, two of which share a common edge, and one VO4 tetrahedron represent the formular unit. These building blocks are connected via hydrogen bonds formed by three ‘isolated’ water molecules and a chain fragment of five connected water molecules.
Effect of deposition pressure on the microstructure and thermoelectric properties of epitaxial ScN(001) thin films sputtered onto MgO(001) substrates
Authors: Burmistrova Polina V. , Zakharov Dmitri N. , Favaloro Tela , Mohammed Amr , Stach Eric A. , Shakouri Ali , Sands Timothy D. 
Published: February 2015

Abstract
REFLEXÕES SOBRE O PROGRAMA NACIONAL DE ALIMENTAÇÃO ESCOLAR – PNAE
Authors: Plaça Orosco de Souza Graziella , José Martines de Oliveira Aparecida , Mayumi Murashita Takenaka Edilene 
Published: February 2015

No intuito de desmistificar a visão assistencialista projetada pela sociedade civil e sua participação na operacionalização das políticas públicas, o trabalho discute sobre o Programa Nacional de Alimentação Escolar - PNAE, apontando potencialidades e fragilidades na região do Pontal do Paranapanema. Foram observados estudos de casos, legislações, e analisado o Programa para se comparar sua proposta e o que os estudos apontaram neste sentido. Constatou-se que a maior participação da sociedade poderia contribuir para a desmistificação do objeto norteador do programa, que se distancia do assistencialismo. PALAVRAS-CHAVE: Programa Nacional de Alimentação Escolar – PNAE. Políticas Públicas. Agricultor Familiar. REFLECTIONS ON THE NATIONAL SCHOOL FEEDING PROGRAMME - PNAE ABSTRACT In order to demystify the welfarism vision projected by the civil society and its participation in the operationalization of public policies, this paper discusses about the National School Feeding Program – PNAE, pointing out strengths and weaknesses in the Pontal do Paranapanema region. Studies of cases and laws were observed, and the Program was analyzed in order to compare their proposal and what the studies point to this direction. It was found that the greater participation of society could contribute to the demystification of the guiding object of program, which moves away from welfarism. KEY-WORDS: National School Feeding Program – PNAE. Public Policies. Family Farmer. PROGRAMA DE ALIMENTACIÓN ESCOLAR NACIONAL – PNAE RESUMEN Con el fin de desmitificar la visión asistencialista proyectada por la sociedad civil y su participación en la operación de las políticas públicas, el trabajo discute sobre el Programa de Alimentación Escolar Nacional – PNAE, destacando los puntos fuertes y débeles en la región del Pontal del Paranapanema. No se observaron casos de estudio, las leyes, y analizaron el Programa para comparar su propuesta y lo que los estudios apuntan en esta dirección. Se encontró que la más intensa participación de la sociedad puede contribuir a la desmitificación de guiar el objeto del programa que se aleja de bienestar. PALABRAS CLAVE: Programa de Alimentación Escolar Nacional – PNAE. Políticas Públicas. Agricultor Familiar.
CIDADE, TRABALHO E HABITAÇÃO: OBSERVAÇÕES INICIAIS SOBRE A QUALIDADE HABITACIONAL
Authors: Dique Fragozo Sônia , Borges Mamede Bruno , Otávio Cocito de Araújo Luis 
Published: February 2015

Este artigo materializa o início da pesquisa de mestrado da autora principal e pretende abordar a relação existente entre a produção das cidades a partir do trabalho e a localização das habitações destinadas à populações com menores níveis de renda. Estas estão segregadas das áreas urbanas com maior quantidade de infraestrutura e, desta maneira, ocupam bairros marginais e cada vez mais distantes destas áreas. Com as políticas recentes de urbanização de áreas com assentamentos precários, a melhoria das habitações comporia uma etapa complementar a busca de melhor qualidade de vida destes locais. Palavras-Chave: Engenharia Urbana, Habitabilidade Urbana, Urbanismo Sustentável. CITY, WORK AND HOUSING: INITIAL OBSERVATIONS ON THE QUALITY HOUSING ABSTRACT This article materializes the begging of the main author’s research for her master’s degree and pretends to analyze the existent relationship between the production of cities from working/labor and the placement of habitations designated to population with lower levels of income. These ones are segregated from the areas with more urban infrastructure and, therefore, occupy marginal and even farther neighborhoods from those. Observing recent politics directed to precarious settlements urbanization, the habitation implement would compose a complementary step for the raising of local life quality. Keywords: Urban Engineering, Urban Habitability, Sustainable Urbanism. CIUDAD DE TRABAJO Y VIVIENDA: OBSERVACIONES INICIALES SOBRE LA CALIDAD DE LA VIVIENDA RESUMÉN Este artículo materializa el inicio de la investigación de maestría de la autora principal y busca abarcar la relación existente entre la producción de ciudades a partir del trabajo y la localización de las habitaciones destinadas a las poblaciones con los menores niveles de renda. Estas están segregadas de las áreas con mayor presencia de infraestructura urbana y, así, ocupan los barios marginales y cada vez más distantes de aquellas. Observando las políticas direccionadas a la urbanización de asentamientos precarios, la implementación de las habitaciones podría componer una etapa al aumento de la calidad de vida local. Palabras-Clave: Ingeniería Urbana, Habitabilidad Urbana, Urbanización Sostenible.
IMAGENS DIGITAIS APLICADAS NO ESTUDO DA ANÁLISE MULTITEMPORAL DO USO E OCUPAÇÃO DO SOLO NUMA MICROBACIA
Authors: Campos Sérgio , Teixeira Gobbi Talita , Minarelli Reche Aline 
Published: February 2015

O conhecimento da ocupação do solo quanto à sua natureza, localização, forma de ocorrência, mudanças ocorridas em determinados períodos, são de grande valia para a programação de atividades que visam ao desenvolvimento agrícola, econômico e social da região. Este trabalho objetivou identificar e quantificar a ocupação de solo da Microbacia do Córrego Petiço – Botucatu (SP), através do Sistema de Informações Geográficas IDRISI e dados do sensor Landsat 5 TM de 09/06/97 e 23/08/2013. Os resultados constataram-se que a cultura de eucalipto, devido a existência de grandes empresas reflorestadoras na microbacia, juntamente com as florestas são predominantes na área de estudo, o restante da área é ocupada por pastagens e solo preparado para o plantio de culturas agrícolas. Palavras-Chave: ocupação,solo, culturas,reflorestamento. DIGITAL IMAGES APPLIED IN THE STUDY OF MULTITEMPORAL ANALYSIS USE AND OCCUPATION OF SOIL IN A WATERSHED ABSTRACT: The knowledge of the soil occupation as for his nature, location, occurrence form, changes happened in certain periods, they are valuable for the programming of activities that you seek to the development agricultural, economical and social of the area. This work aimed at to identify and to quantify the soil occupation of Stream Petiço Watershed - Botucatu (SP), through the Geographical Information System IDRISI and data of sensor Landsat 5 TM of 09/06/97 and 23/08/2013. For the analysis of the results it was verified that the eucalyptus culture, due to existence of great reforestation companies in the watershed, together with the native forests they are predominant in the study area, the remaining of the area is occupied by pastures and soil prepared for the planting of agricultural cultures. Keywords: occupation ,soil, cultures, reforestation IMÁGENES DIGITALES APLICADAS EN EL ESTUDIO DE USO ANÁLISIS MULTITEMPORAL Y OCUPACIÓN DEL SUELO EN UNA CUENCA RESUMEN: El conocimiento del uso de la tierra en la naturaleza, ubicación, forma deocurrencia, los cambios en ciertos períodos, son muy útiles para la programación de actividades orientadas al desarrollo agrícola, económico y social de la región. Este estudio tuvo como objetivo identificar y cuantificar la Cuenca de la ocupación del suelode Petiço Stream - Botucatu (SP) a través del Sistema de Información GeográficaIDRISI y datos del sensor Landsat 5 TM 06/09/97 y 08/23/2013. Los resultadosencontraron que el cultivo de eucalipto, debido a la existencia de grandes empresas de reforestación en la cuenca, junto con los bosques son predominantes en el área de estudio, el resto de la superficie está ocupada por pastos y tierra preparada para la siembra de cultivos. Palabras-clave: ocupación, el suelo, las plantas, la reforestación.
ESTUDO DA QUALIDADE DA ÁGUA DO CÓRREGO DOS MACACOS, MUNICÍPIO DE ÁLVARES MACHADO/SP
Authors: De Souza Silva Bruna , Ribeiro de Araujo Renata 
Published: February 2015

A interferência humana na natureza vem provocando significativas alterações na qualidade da água dos córregos. Neste sentido, a presente pesquisa teve por objetivo realizar o monitoramento limnológico em seções do córrego dos Macacos, localizadas no município de Álvares Machado/SP, a fim de compreender o comportamento de variáveis físicas, químicas e biológicas. Para isto, foram feitas amostragens em cinco seções do córrego. As variáveis avaliadas foram temperatura da água (T), condutividade elétrica (CE), turbidez (Turb), pH, oxigênio dissolvido (OD) e nitrato através de uma multisonda paramétrica de marca Hanna modelo HI9829. Os resultados do monitoramento apontaram para uma má qualidade da água do córrego, atribuída à interferência humana, ou seja, uso e cobertura da bacia hidrográfica. PALAVRAS-CHAVE: Monitoramento limnológico. Córrego dos Macacos. Álvares Machado. STUDY OF THE WATER QUALITY OF MACACOS STREAM, MUNICIPALITY OF ALVARES MACHADO/SP ABSTRACT The human interference in nature has led to significant changes in the water quality of streams. In this sense, the present study aimed to realize the limnological monitoring in sections of Macacos stream, located in the municipality of Alvares Machado/SP, in order to understand the behavior of physical, chemical and biological variables. For this, samples were taken in five sections of the stream. The variables evaluated were water temperature (T), electrical conductivity (EC), turbidity (Turb), pH, dissolved oxygen (DO) and nitrate through a parametric Multiprobe brand Hanna model HI9829. Monitoring results pointed to a poor quality of stream water, which was attributed to human interference in the use and coverage of the watershed. KEY-WORDS: Limnological monitoring. Macacos Stream. Alvares Machado. ESTUDIO DE LA CALIDAD DE LA AGUA DEL ARROYO DE LOS MACACOS, MUNICIPIO DE ALVARES MACHADO/SP RESUMEN La intervención humana en la naturaleza ha dado lugar a cambios significativos en la calidad del agua de los arroyos. En este sentido, el presente estudio tuvo como objetivo realizar el monitoreo limnológico en las secciones del arroyo de los Macacos, que se encuentra en el municipio de Alvares Machado/SP, con el fin de comprender el comportamiento de las variables físicas, químicas y biológicas. Para ello, se tomaron muestras en cinco secciones del arroyo. Las variables evaluadas fueron la temperatura del agua (T), conductividad eléctrica (CE), la turbidez (Turb), pH, oxígeno disuelto (OD) y nitrato a través de una multisonda paramétrica de marca Hanna modelo HI9829. Los resultados del monitoreo apuntaron a la mala calidad de la agua del arroyo, lo cual se atribuye a la interferencia humana en el uso y cobertura de la cuenca. PALABRAS-CLAVE: Monitoreo limnológico. Arroyo de los Macacos. Alvares Machado
CONCEITO DE SISTEMAS HIDROLÓGICOS LÊNTICOS NATURAIS E SUAS ESCASSAZ DIFERENCIAÇÕES NA LITERATURA BRASILEIRA
Authors: Ferreira de Souza Denivaldo 
Published: February 2015

O presente trabalho busca em sua introdução apresentar um breve enfoque sobre os sistemas hídricos presentes nos continentes e dar destaque a relação que de InPut, InTake e OutPut que Christofoletti (1979) aborda. No decorrer, são expostos embasamentos teóricos e empíricos sobre sistema hidrológicos lênticos naturais relacionados a suas definições que ainda são pobres na literatura brasileira. Assim sendo, conclui-se de maneira pessoal a necessidade de trabalhos aprofundados sobre a limnologia em caráter de definições e classificações de ambientes lacustres para que o meio acadêmico utilizam-se de referencia em seus estudos. PALAVRAS-CHAVE: Sistemas lênticos; Lagos; Lagoas. CONCEPT OF SYSTEMS NATURAL HYDROLOGIC LENTIC AND YOUR ESCASSAZ DIFFERENTIOTIONS IN BRAZILIAN LITERATURE ABSTRACT This study aims to present a brief introduction its focus on water systems present in the continents and highlight the relationship of input, intake and OutPut that Christofoletti (1979) addresses. Throughout, theoretical and empirical studies of natural lentic hydrological system related to their definitions that are still poor in Brazilian literature soffits are exposed. Therefore, it is concluded in a personal way the need for extensive work on the limnology in character definitions and classifications for water bodies that are used academic reference in their studies. KEY-WORDS: Lentic systems; Lakes; ponds. CONCEPTO DE SISTEMAS NATURAL HIDROLÓGICOS LENTICAS Y SU ESCASSAZ DIFERENCIACIONES EN LITERATURA BRASILEÑA RESUMEN Este estudio tiene como objetivo presentar una breve introducción de su enfoque en los sistemas de agua presentes en los continentes y poner de relieve la relación de entrada, admisión y de salida que Christofoletti (1979) direcciones. En todo momento, se exponen los estudios teóricos y empíricos del sistema hidrológico lénticos naturales relacionados con sus definiciones que siguen siendo pobres en plafones literatura brasileña. Por lo tanto, se concluye de un modo personal la necesidad de una amplia labor en la limnología en las definiciones y clasificaciones de caracteres para los cuerpos de agua que se utilizan de referencia académica en sus estudios. PALABRAS-CLAVE: Sistema Lenticas; Lagunas; Estanques.