bluuebunny/crossref_metadata_2025_split huggingface dataset:
Darstellung und Strukturbeschreibung von NaCa3 Mn(V2O7)(V3O10) / Preparation and Structure of NaCa3Mn(V2O7)(V3O10)
Authors: Rettich R. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of NaCa3 Mn(V2O7)(V3O10) have been prepared by crystallization from flux in argon atmosphere. X-Ray single crystal methods led to triclinic symmetry, space group C1
i - P 1̄, a = 6.8798(9), b = 6.902(1), c = 15.480(2) Å, α = 87.39(1), β = 85.32(1), γ = 86.25(2) °, Z = 2. The compound belongs to the rare trivanadates showing V2O7 and V3O10 groups incorporated into a NaCaMn/O framework. One point position of the cations is occupied by Ca2+, three by Na+ and Ca2+ in a statistical distribution and a fourth one by Mn2+. The surrounding of Mn2+ and the statistically occupied position M(3) are octahedra, the other metal positions are centers of capped trigonal prisms.
Ba4Mn2Ag2O(As04)4 , ein Barium-Mangan-Oxid-Arsenat mit nichtlinearen O-Ag-O-Hanteln / Ba4Mn2Ag2O(AsO4)4, a Barium Manganese Oxide-Arsenate Showing Nonlinear O-Ag-O Dumbbells
Authors: Staack M. , Müller-Buschbaum Hk. 
Published: February 2015

Abstract
Single crystals of Ba4Mn2Ag2O(AsO4)4 have been prepared by solid state reactions using metallic silver as reactant. X-ray techniques led to monoclinic symmetry, space group D2h-P2,/m, a = 8.739(2), b = 5.912(1), c = 9.440(2) Å, β = 115.21(1)°, Z = 1. The crystal structure is characterized by O-Ag-O dumbbells, bond angle = 165,3°, containing one oxygen atom not associated with the arsenate groups. Considering these facts Ba4Mn2Ag2O(AsO4)4 may be seen as an oxide-arsenate or an oxoargentate(I)-arsenate. Assuming the oxidation state +II for manganese, as confirmed by magnetic measurements, the compound has an oxygen deficite which was accounted for by a split position model.
Hydrido(acylphenolato)cobaIt(III)-Verbindungen mit Trimethylphosphan-Liganden / Hydrido(acylphenolato)cobalt(III) Compounds Containing Trimethylphosphane Ligands
Authors: Klein Hans-Friedrich , Haller Stefan , Sun Hongjian , Li Xiaoyan , Jung Thomas , Röhr Caroline , Flörke Ulrich , Haupt Hans-Jürgen 
Published: February 2015

Abstract
Salicylaldehyde derivatives and related β-hydroxo aldehydes CHO-CR=CR′-OH react with CoMe(PMe3)4 via oxidative substitution to form low-spin d6 complexes mer-CoH(CO-CR=CR-O)(PMe3)3. Reductive elimination of acyl and hydride functions from cis positions at the metal is less favourable than in carbonyl cobalt intermediates through a pronounced stabilization by neutral phosphane σ-donor and dianionic acylenolato chelate ligands. Reactions of the hydride complexes with iodomethane or with protic acids HX afford octahedral molecular complexes mer-CoX(CO-CR=CR′-O)(PMe3)3 (X =I, OAc) and mer-CoX(CO-CR=CR′-O)(PMe3)2 (X = OAc, O-CR′=CR-CHO) without opening of the acylenolato chelate ring.
Weitere Verbindungen zum Ba6Nd2Al4O15-Typ: Ba4Nd4Zn3PtO15 und Ba4Eu4Zn3PtO15 / Further Compounds of the Ba6Nd2Al4O15 Type: Ba4Nd4Zn3PtO15 and Ba4Eu4Zn3PtO15
Authors: Sfreddo O. , Muller-Buschbaum Hk. 
Published: February 2015

Abstract
The compounds Ba4Nd4Zn3PtO15; (I) and Ba4Eu4Zn3PtO15 (II) crystallize with hexagonal symmetry, space group C4
6V-P63mc, (I): a = 11.719(1), c = 6.778(1) Å, (II): a = 11.654(1), c = 6.778(1) Å, Z = 2. Both belong to the Ba6Nd2-. AI4O15 type when replacing 2Ba2+ by 2Ln3+ and 4Al3+ by 3Zn2+ + Pt4+. The tetrahedrally coordinated Al3+ is substituted by Zn2+, the octahedrally one by Pt4+. Due to the similarity of X-ray scattering of Ba2+ and Ln3+ the ordered replacement of Ba2+ by Ln3+ has been proven by calculations of the Coulomb terms of lattice energy.
Development of a Program-Loading Spectrum for the Accelerated Durability Test of Lower Control Arm
Authors: Yu Jiawei , Zheng Songlin , Liang Guoqing , Feng Jinzhi 
Published: February 2015

Abstract
This study aims to develop a program-loading spectrum for the accelerated durability test of automotive components, with the lower control arm of a suspension as an example. Spectrum development is divided into three parts, namely, load spectrum acquisition, spectrum preprocessing, and program-loading spectrum development. Based on the strengthening property of structural low-amplitude loads under constant and random loadings, a program-loading spectrum-development method considering the strengthening effect of low-amplitude loads (SLAL) below the fatigue limit is proposed. Meanwhile, an equivalent strengthening methodology is considered during spectrum development. The number of loading cycles is decreased, and the bench test time is notably reduced by adjusting strengthening loads to the most effective level. The bench test proved that the influence of SLAL during spectrum development can simulate actual load conditions more effectively and precisely. Thus, this method can accurately predict fatigue failure from the durability test and can efficiently reduce durability test time.
Genetic and Epigenetic Changes in Somatic Hybrid Introgression Lines Between Wheat and Tall Wheatgrass
Authors: Liu Shuwei , Li Fei , Kong Lina , Sun Yang , Qin Lumin , Chen Suiyun , Cui Haifeng , Huang Yinghua , Xia Guangmin 
Published: February 2015

Abstract
Broad phenotypic variations were induced in derivatives of an asymmetric somatic hybridization of bread wheat (Triticum aestivum) and tall wheatgrass (Thinopyrum ponticum Podp); however, how these variations occurred was unknown. We explored the nature of these variations by cytogenetic assays and DNA profiling techniques to characterize six genetically stable somatic introgression lines. Karyotyping results show the six lines similar to their wheat parent, but GISH analysis identified the presence of a number of short introgressed tall wheatgrass chromatin segments. DNA profiling revealed many genetic and epigenetic differences, including sequences deletions, altered regulation of gene expression, changed patterns of cytosine methylation, and the reactivation of retrotransposons. Phenotypic variations appear to result from altered repetitive sequences combined with the epigenetic regulation of gene expression and/or retrotransposon transposition. The extent of genetic and epigenetic variation due to the maintenance of parent wheat cells in tissue culture was assessed and shown to be considerably lower than had been induced in the introgression lines. Asymmetric somatic hybridization provides appropriate material to explore the nature of the genetic and epigenetic variations induced by genomic shock.
Distribution of Promops davisoni Thomas, 1921 (Chiroptera: Molossidae) in Peru with a new record and southward range extension
Authors: Flores Marisel Giuliana , Mamani Giüseppy Calizaya , Pacheco Víctor , Alvarado Giovanni Aragón 
Published: February 2015

Promops davisoni is a poorly known insectivorous bat represented by fewer than two dozen specimens in collections. These species are endemic from the Andean western slopes of Ecuador and Peru where it is known from the Mongoya River, province of Manabí, central Ecuador to the Santuario Nacional Lagunas de Mejia, Arequipa department, southwestern Peru. We report a new record of P. davisoni from Pampa Alta, Tacna department, Peru. This new specimen documents a 125 km range extension and the southernmost record of P. davisoni from Peru.
Ion irradiation and radiation effect characterization at the JANNUS-Saclay triple beam facility
Authors: Beck Lucile , Serruys Yves , Miro Sandrine , Trocellier Patrick , Bordas Eric , Leprêtre Frédéric , Brimbal Daniel , Loussouarn Thomas , Martin Hervé , Vaubaillon Sylvain , Pellegrino Stéphanie , Bachiller-Perea Diana 
Published: February 2015

Abstract
2d And 3d Acoustic Metamaterials Using Space Coil Design
Authors: Maurya Santosh K. , Sahay Manu , Shukla Shobha , Saxena Sumit 
Published: February 2015

ABSTRACTVarious promising applications such as acoustic cloaking, sub-wavelength imaging, acoustic wave manipulation, transmission or reflection control etc. are feasible because of the ability of manipulating sounds and vibrations using artificially engineered “Acoustics meta-materials”. Recent works on space-coiling acoustic metamaterials show their extreme constitutive parameters like large refractive index, double negativity and zero mass density. Three dimensional structures have a wide application in sub-wavelength broadband acoustic wave suppression due to huge attenuation. Here we report the study of propagated and transmitted wave through 3D acoustic metamaterials structure using finite element method. Our simulations on 3D structure show a huge absorption/damping over few hundreds kilohertz frequency range.
Plasma Deposition of Biomolecules for Enhanced Biomedical Applications
Authors: O’Neill Liam , Twomey Barry , Dobbyn Peter , O’Donoghue John 
Published: February 2015

ABSTRACTBiomolecules have been traditionally immobilised onto surfaces using wet chemical techniques for various medical applications. Recent decades have seen plasma methods being used to prepare these surfaces through various forms of surface modification, but the direct exposure of biomolecules to plasma has been avoided due to fears that the molecules would be denatured by the energetic plasma species. Recent results are now demonstrating that direct plasma deposition of biomolecule coatings can be achieved. This creates the possibility to directly modify the surface of implants without any form of surface pre-treatment and this opens up the possibility to alter the healing processes. Materials such as collagen, chitosan, catalase and heparin can be effectively deposited onto surfaces with minimal impact on biological performance and without any chemical binders, linkers or impurities. The performance of these materials has been characterised using both in vitro and in vivo methodologies. In a further step, the results of a preclinical trial are presented which reveal that direct deposition of biomolecules onto open wounds can also be achieved and the impact of this on wound healing is measured in an immunocompromised animal model. A non-thermal plasma device was used to deliver collagen on to chronic wounds and the treatment was shown to promote wound closure in a rabbit wound healing model.
X-ray Topography Studies of Relaxation during the Homo-Epitaxy of 4H-SiC
Authors: Wang H. , Dudley M. , Zhang J. , Thomas B. , Chung G. , Sanchez E. K. , Hansen D. , Mueller S. G. 
Published: February 2015

ABSTRACTA review is presented of Synchrotron X-ray Topography and KOH etching studies carried out on n type 4H-SiC offcut substrates before and after homo-epitaxial growth to study defect replication and strain relaxation processes and identify the nucleation sources of both interfacial dislocations (IDs) and half-loop arrays (HLAs) which are known to have a deleterious effect on device performance. We show that these types of defects can nucleate during epilayer growth from: (1) short segments of edge oriented basal plane dislocations (BPDs) in the substrate which are drawn by glide into the epilayer; and (2) segments of half loops of BPD that are attached to the substrate surface prior to growth which also glide into the epilayer. It is shown that the initial motion of the short edge oriented BPD segments that are drawn from the substrate into the epilayer is caused by thermal stress resulting from radial temperature gradients experienced by the wafer whilst in the epi-chamber. This same stress also causes the initial glide of the surface half-loop into the epilayer and through the advancing epilayer surface. These mobile BPD segments provide screw oriented segments that pierce the advancing epilayer surface that initially replicate as the crystal grows. Once critical thickness is reached, according to the Mathews-Blakeslee model [1], these screw segments glide sideways under the action of the mismatch stress leaving IDs and HLAs in their wake. The origin of the mismatch stress is shown to be associated with lattice parameter differences at the growth temperature, arising from the differences in doping concentration between substrate and epilayer.
Area-Selective Electroless Deposition of Gold Nanostructures on SiC Using Focused-Ion-Beam Preprocessing
Authors: Itasaka Hiroki , Nishi Masayuki , Shimizu Masahiro , Hirao Kazuyuki 
Published: February 2015

ABSTRACTArea-selective electroless deposition of gold nanostructures on a 6H-SiC substrate is demonstrated. Gold nanostructures selectively grow on a focused ion beam (FIB)-irradiated area on the 6H-SiC substrate when the substrate is exposed to a pure HAuCl4 aqueous solution. The nucleation of gold was more favorable on the Si face than on the C face. Quantitative evaluation of the amount of gold grown both on SiC and silicon is conducted to discuss the growth of gold, where silicon is a substrate we used in our previous study on this method. We reveal the mechanism of the growth of gold nanostructures as follows: Dangling bond defects formed in the FIB-irradiated area initiate the nucleation of gold by reducing Au ions in the solution at the surface. Once the SiC-gold or the silicon-gold boundary, which meets the Schottky contact condition, has formed, electrons in the non-FIB-irradiated region under/around the FIB-irradiated one also reduce Au ions on the gold surface through the boundary.
Green synthesis of CdSe/ZnS core-shell quantum dot nanophosphors and its Poly methyl methacrylate composite thin film in the visible spectral range
Authors: Mohan Sneha , Soman Theertha , Oluwafemi Samuel. O. , George Soney. C. , Miska Patrice , Rouxel Didier , Kalarikkal Nandakumar , Thomas Sabu 
Published: February 2015

ABSTRACTWe herein report the synthesis of highly-fluorescent CdSe/ZnS core-shell quantum dots (QDs) nanophosphors via a simple, non-phosphine and one pot synthetic method in the absence of an inert atmosphere. The as-prepared nanocrystallites were characterized by Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible (UV-vis) and photoluminescence spectroscopy, transmission electron microscopy (TEM) and high resolution TEM (HRTEM). The obtained CdSe/ZnS QDs were of high quality with sharp absorption peaks, bright luminescence, narrow emission width and high PL quantum yield (up to 74 %) without any size sorting. The structural analysis showed that the as-synthesised QDs are small and spherical in shape with narrow size distributions while the presence of the lattice fringe in the HRTEM image confirmed the crystallinity of the material. The dispersion of the obtained core-shell QDs in PMMA matrix resulted in the fabrication of highly fluorescent PMMA- CdSe/ZnS core shell QDs polymer nanocomposite film.
Determining the Efficiency of Fast Ultrahigh-density Writing of Low-Conductivity Patterns on Semiconducting Polymers
Authors: Keivanidis Panagiotis E. , di Donato Andrea , Mencarelli Davide , Esposito Alessandro , Ye Tengling , Lanzani Guglielmo , Venanzoni Giuseppe , Pietrangelo Tiziana , Morini Antonio , Farina Marco 
Published: February 2015

ABSTRACTWe present a nano-patterning process for semiconducting polymeric composites that could potentially be utilized for the development of polymer-based data storage devices. Nano-patterning (writing) operates on the basis of the mechanical interaction between the electrically unbiased tip of an atomic force microscope and the surface of polymeric composite films. Via friction forces, the tip/sample interaction produces a local increase of molecular disorder in the polymer matrix, inducing a localized lowering in the conductivity of the organic semiconductor. Herein we suggest a figure of merit for quantifying the efficiency of pattern formation and we address the dependence of the writing process on the thermal annealing temperature of the composite film. Control experiments on composite films deposited on substrates with different roughness suggest that the writing effect is invariant to the roughness of the substrate. The potential storage density of the writing process depends on the tip curvature.
Editorial
Authors: De Gloria Alessandro 
Published: February 2015

I am pleased to introduce the first issue of the second year of the IJSG presenting the special issue dedicated to the Games and Learning Alliance Conference (GaLA Conf), that was held in Bucharest in July 2014. The best conference papers were selected and invited for an extended version – with at least one third unpublished content - to be submitted in the regular IJSG evaluation process. In the end of the flow, I am proud to present four papers dealing with learning analytics, user studies for assessing effectiveness of SGs and of their components, and integration of game-based learning in curricula. The issue includes as well one regular paper and a communication for a special issue on mathematics learning games.
Forestación de isletas de dragado utilizando dos especies de mangles, en una laguna costera del Golfo de California, México
Authors: Benitez-Pardo Daniel , Flores-Verdugo Francisco Javier , Casas-Valdez Margarita , Hernández-Carmona Gustavo , Valdez-Hernández Juan Ignacio , Gómez-Muñoz Víctor 
Published: February 2015

El propósito del presente estudio fue generar información en torno a la posibilidad de estabilizar isletas de dragado mediante la plantación de halófitas, particularmente con la creación de nuevas áreas de manglar. Para esto, fue construido un vivero para producir plantas de Avicennia germinans y Rhizophora mangle , a la vez que se obtuvieron individuos del medio natural para ambas especies. Para su plantación se consideró el intervalo de mareas, áreas de baja energía, salinidad, zonación de cada especie y un diseño experimental de bloques completos al azar. Los resultados indicaron una mayor supervivencia y crecimiento de las plantas de vivero que las extraídas del medio natural. La supervivencia de plantas de A. germinans (78% con contenedor, 72% sin contenedor, 34% medio natural) fue mayor que la de R. mangle (43% con contenedor, 34% sin contenedor, 2% medio natural). De igual manera, el crecimiento en altura de las plantas de A. germinans , tanto de las producidas en vivero (3.2 cm mes-1), como las extraídas del medio natural (1.5 cm mes-1), fue mayor que las de R. mangle (producidas en vivero: 1.4 cm mes-1; extraídas del medio natural: 0.8 cm mes-1). No se presentó colonización natural durante el periodo de estudio, por lo que son recomendables las plantas de vivero para iniciar la forestación de isletas artificiales, considerando las mareas, la zonación natural local, áreas de baja energía y sobre todo, el hidroperiodo.
Effects of Hardness and Cosurfactant on Phase Behavior of Alcohol-Free Alkyl Propoxylated Sulfate Systems
Authors: Puerto Maura C. , Hirasaki George J. , Miller Clarence A. , Reznik Carmen , Dubey Sheila , Barnes Julian R. , van Kuijk Sjoerd 
Published: February 2015

Summary
The effect of hardness was investigated on equilibrium phase behavior in the absence of alcohol for blends of three alcohol propoxy sulfates (APSs) with an internal olefin sulfonate (IOS) with a C15–18 chain length. Hard brines investigated were synthetic seawater (SW), 2*SW, and 3*SW, the last two with double and triple the total ionic content of SW with all ions present in the same relative proportions as in SW, respectively. Optimal blends of the APS/IOS systems formed microemulsions with n-octane that had high solubilization suitable for enhanced oil recovery at both ≈25°C and 50°C. However, oil-free aqueous solutions of the optimal blends in 2*SW and 3*SW, as well as in 8 and 12% NaCl solutions with similar ionic strengths, exhibited cloudiness and/or precipitation and were unsuitable for injection. In SW at 25°C, the aqueous solution of the optimal blend of C16–17 7 propylene oxide sulfate, made from a branched alcohol, and IOS15–18, was clear and suitable for injection. A salinity map prepared for blends of these surfactants illustrates how such maps facilitate the selection of injection compositions in which injection and reservoir salinities differ. The same APS was blended with other APSs and alcohol ethoxy sulfates (AESs) in SW at ≈25°C, yielding microemulsions with high n-octane solubilization and clear aqueous solutions at optimal conditions. Three APS/AES blends were found to form suitable microemulsions in SW with a crude oil at its reservoir temperature near 50°C. Optimal conditions were nearly the same for hard brines and NaCl solutions with similar ionic strengths between SW and 3*SW. Although the aqueous solutions for the optimal blends with crude oil were slightly cloudy, small changes in blend ratio led to formation of lower phase microemulsions with clear aqueous solutions. When injection and reservoir brines differ, it may be preferable to inject at such slightly underoptimum conditions to avoid generating upper phase, Winsor II, conditions produced by inevitable mixing of injected and formation brines.
Capillary Injection Tubing Anchor Technologies
Authors: Matthews Randy , Frazier Shad 
Published: February 2015

Abstract
There are many oil and gas fields across the United States which have been producing for over 100 years or more. The barriers that exist to prevent such extended field life are many. Those issues include: rod and rod pump failures, damage to the tubing, paraffin/scale deposition salting and corrosion. All of these can present challenges of how to deal with the problem and correct it, while maintaining economic visibility of a field.
Tackling these issues has mostly been done using batch treatments with various preventative chemicals which over the years have proved to be expensive and not very effective as it cannot pinpoint the problem directly. More recently the use of capillary injection strings attached to the outside of the production tubing has helped to improve this situation by providing a means of injecting smaller volumes of chemicals and fresh water closer to the source of the problem. However, on rod pump wells the point of injection can only be made above the tubing anchor; thus failing to protect the pump and internals of the tubing string. A new design of tubing anchor is now becoming available which incorporates a pass through capability for a capillary injection string thus enabling chemical and fresh water treatment capabilities for the pump as well as the rods and tubing.
In this paper the author will review the history of chemical treatment methods and describe the use of a new tubing anchor design that addresses the shortcomings of current chemical injection techniques.
HEALS Hypertension Control Program: Training Church Members as Program Leaders
Authors: Dodani Sunita , Beayler Irmatine , Lewis Jennifer , Sowders Lindsey A 
Published: February 2015

Introduction:
Health disparities related to cardiovascular diseases (CVDs) including stroke have remained higher in the African-Americans (AAs) than in other populations. HEALS is a faith-based hypertension (HTN) control program modified according to AA community needs, and delivered by the church-lay members called church health advisors (CHAs). This study examined the feasibility and acceptability of training CHAs as HEALS program leaders.

Design:
Four CHAs completed a 10-hour HEALS program training workshop at the Church, conducted by the nutrition experts. Workshop was evaluated by CHAs on their level of satisfaction, clarity of contents covered and comfort in delivery the program to the church congregation.

Results:
The overall six main HEALS curriculum components were completed. Workshop was highly evaluated by CHAs on length of training, balance between content and skills development, and level of satisfaction with program delivery.

Conclusion:
Church-based culturally modified health promotion interventions conducted by the community lay members may be a way to reduce health disparities in ethnic minorities.