bluuebunny/crossref_metadata_2025_split huggingface dataset:
Umsetzungen von Metall-und Metalloidverbindungen mit mehrfunktionellen Molekülen, XXXIV Darstellung von Sulfmamidoboranen / Reactions of Metal and Metalloid Compounds with Polyfunctions! Molecules, XXXIV Synthesis of Sulfinamidoboranes
Authors: Meiler Anton , Maringgele Walter , Armbrecht Michael 
Published: February 2015

Abstract
Sulfinamidoboranes are prepared by cleavage of the Si-N-bond
1. of N-methyl-N-trimethylsilyl-methyl-sulfinamide with haloborane derivatives (1-4), and
2. of N,N-organyl-trimethylsilylaminoboranes with methylsulfinylchloride N-methyl-N-trimethylsilyl-methylsulfinamide (9) is obtained from heptamethyldisilazane with methylsulfinylchloride. The compounds were characterized by analytical and spectrocopic (MS; NMR: 1H, 11B) methods.
The Crystal Structure of Solvated Molybdenum Oxide Tetrachloride
Authors: Mercer Mary , Muir Kenneth W. , Sharp David W. A. 
Published: February 2015

Abstract
MoOCl4 in the solid state has a square pyramidal structure with chlorine-bridging trans to the oxygen linking the molecules into infinite chains. The structure gives holes in the lattice occupied by solvate molecules.
Sulfidhalogenide des Germaniums: Darstellung und Strukturen von Ge4S6Br4 und Ge4S6I4 / Thiohalides of Germanium: Preparation and Structures of Ge4SeBr4 and Ge4S6I4
Authors: Pohl Siegfried , Seyer Ulrich , Krebs Bernt 
Published: February 2015

Abstract
The reaction of GeX4 (X = Br, I) and H2S in CS2 yields Ge4S6Br4 (1) and Ge4S6I4 (2). The crystal structures of 1 and 2 were determined from single crystal X-ray data (1: P1̄, a = 880.6, b = 993.4, c = 1010.6 pm, α = 86.05, β = 64.00, γ = 89.87°, V = 792 · 106 pm 3 , Z = 2; 2 : P3̄, a = 1064.0, c = 946.1 pm, V = 928 · 106 pm3 , Z = 2). They consist of isolated adamantane-like molecules.
Reactions of Some Ammonium Fluorometalates with XeF2
Authors: Slivnik Jože , Družina Branko , Žemva Boris 
Published: February 2015

Abstract
The reactions between (NH4)2TiFe, (NH4)2ZrF6, (NH4)2HfF6, (NH4)3VF6, (NH4)3CrF6, NH4MnF3, (NH4)3FeF6 and excess xenon difluoride were investigated. The listed ammonium fluorometalates react with xenon difluoride to form corresponding xenon(II) fluorometalates, monoammonium fluorometalates with metal in the same oxidation state, and ammonium fluorometalates with metal in higher oxidation state, respectively.
Synthese und Kristallstruktur von Cs3(AuBr4)2Br3 / Synthesis and Crystal Structure of Cs3(AuBr4)2Br3
Authors: Lehnis Birgit , Strähle Joachim 
Published: February 2015

Abstract
Cs3(AuBr4)2Br3 is obtained in the form of red needles by adding the stoichiometric amount of CsBr to a solution of HAuBr4 and Br3- in aqueous HBr. The salt decomposes slowly at room temperature to form a mixed-valent, cubic bromo aurate(I,III), in which the linear AuBr2- ions are partially substituted by Br3- ions. At 140 °C Cs2Au2Br6 and CsBr are formed. Cs3(AuBr4)2Br3 crystallizes monoclinic with four formula units in the space group P21/c. The structure is built up by AuBr4-and Br3- anions and Cs+ cations. An average Au−Br distance of 242.2 pm was found for the square planar AuBr4- ion. The linear Br3-groups are almost symmetrical with Br−Br distances of 254.0 and 256.2 pm. Therefore only two vibrations are observed in the IR spectrum: νas = 172, δ = 56 cm-1
. The absorptions of the AuBr4- groups are: νas=250, σas=113, γ=102cm-1.
Na6Si2Te6 - ein neues Tellurohypodisilikat / Na6Si2Te6 - A New Tellurohypodisilicate
Authors: Eisenmann Brigitte , Schwerer Heike , Schäfer Herbert 
Published: February 2015

Abstract
The new compound Na6Si2Te6 crystallizes in the monoclinic system (space group P 21/c) with
a = 878.6(3) pm, b = 1278.0(4) pm, c = 886.4(3) pm, β = 119.71(5)°.
The compound is isotypic to K6Sn2Te6, essential structure elements are [Si2Te6]6- anions.
Zur Struktur von KFe2As2, KCo2As2, KRh2As / Crystal Structure of KFe2As2, KCo2As2, KRh2As 2 and KRh2P2
Authors: Rózsa Sándor , Schuster Hans-Uwe 
Published: February 2015

Abstract
Four new ternary compounds KB2X2 (B = Fe, Co, Rh; X = P, As) were prepared. They are isotypic and crystallize in a ThCr 2Si2-type structure (I4/mmm) with the following lattice constants:
KFe2As2: a = 384.2 pm c = 1386.1 pm
KCO2AS2: a = 379.4 pm c = 1357.0 pm
KRh2As2 : a = 398.7 pm c = 1326.7 pm
KRh2P2 : a = 388.4 pm c = 1298.6 pm
Partially Oxidised Products of Magnus Green Salt and Similar Conducting Solids
Authors: Papavassiliou G. C. , Layek D. 
Published: February 2015

Abstract
During the partial oxidation of Magnus green salt two kinds of compounds have been obtained. One is copper coloured with d.c. conductivity of the same order as in KCP. The other is red orange coloured with a metal-halide chain. Also compounds similar to the copper coloured com-plex have been prepared.
Diethylamino/methylphosphonium-methylide und ihre Bis(cyclopentadienyI)zirconium(IV)-Komplexe / Diethylamino/methylphosphonium-methylides and their Bis(cyclopentadienyl)zirconium(IV) Complexes
Authors: Schmidbaur H. , Pichl R. 
Published: February 2015

(1a-
The diethylamino/methylphosphines Men(NEt2)3-nP c) with n = 0, 1, or 2 have been synthesized from PCl3 or MePCl2, respectively. Addition of methyliodide gave the phosphonium salts Men(NEt2)4-nP+I-
(2a-c) with n = 1 , 2 , or 3. These salts were converted into the corresponding ylides Men(NEt2)3-nP=CH2
(3a-c) with n = 0, 1, or 2. The products are reactive, colorless, distillable liquids, freely soluble in non-polar solvents. - (C5H5)2ZrCl2 when treated with 3b afforded two isomeric products with chelating or monodentate vlide coordination, respectively: (C5H5)2ZrCl(CH2)2P(NEt2)2
(4) and (C5H5)2ZrClCH=P(NEt2)2Me (5). In an analogous reaction. 3a gave a dinuclear complex [(C5H5)2ZrCP(NEt2)Me2]2
(6) whereas no well-defined material could be obtained with the bulky trisamino ylide 3c. All compounds were characterized by their 1H. 13C, and 31P NMR spectra.
Synthesen, Kristall- und Molekülstruktur ionischer Nickel-Komplexe mit Phosphanen im kationischen und anionischen Komplex-Teil / Syntheses, Crystal and Molecular Structure of Ionic Nickel Complexes with Phosphanes in the Cationic and Anionic Part
Authors: Brenndörfer Maria , Brune Hans Albert , Debaerdemaeker Tony , Hemmer Reinhard 
Published: February 2015

The syntheses of five new nickel-II-complexes of the type [HPR′3][R3PNiCl3] (R,R′ = C6H5, n-C4H9, C6H11 , C5H9 and R = C6H5, R′ = C6H11) are described.
The structure of the compound [HP(C6H11)3][(C6H5)3PNiCl3] was determined by X-ray analysis. The crystals are monoclinic; space group P21/n with the lattice parameters a = 18.180(5), b = 18.842(4), c = 11.173(3) Å and β = 107.12(6)°; Z = 4.
Composición de especies leñosas en comunidades invadidas en montañas del centro de Argentina: su relación con factores ambientales locales
Authors: Zeballos Sebastián R. , Tecco Paula A. , Cabido Marcelo , Gurvich Diego E. 
Published: February 2015

Invasions by exotic woody species are threatening ecosystem functions worldwide. The spread and subsequent replacement of native forest by exotic dominated stands is particularly evident nearby urban centers were exotic propagule pressure is highest. Yet, there is a lack of information on the environmental factors that underlie these replacements. In this study we addressed the following questions: (1) ¿is there a local spatial segregation between the dominant native and exotic woody species? and (2) if this local segregation does exist, is it driven by environmental features?. For this, in 2010 we established 31 plots distributed along 16 sampling site we surveyed the composition and abundance of all woody species with a basal diameter ≥ 5cm. To characterize the environment of each plot, we measured the topographic position (slope, exposure) and different properties such as soil physics (bulk density, soil impedance), structure (soil deep, texture) and chemical characteristics (pH, nutrient and water content). Through a cluster analysis we were able to identify five different woody communities in coexistence: (1) Woodlands dominated by the exotic <em>Ligustrum lucidum</em>; (2) Mixed woodlands dominated by the native <em>Lithraea molleoides</em> and the exotic <em>Celtis australis</em>; (3) Scrublands dominated by the native <em>Condalia buxifolia</em>; (4) Scrublands dominated by the exotic <em>Cotoneaster glaucophyllus</em>, and (5) Scrubby grasslands with the exotic <em>Pyracantha angustifolia</em>. These communities were all associated with different local topographic and edaphic features. The environmental segregation among the identified communities suggests that woody invaders have the potential to colonize almost all the environments of the study site (though varying in the identity of the dominant exotic species). The observed patterns, even being restricted to a single well invaded area of mountain Chaco, may posit the spread of woody invaders towards native communities in the region
Evaluación de competencias del profesional de enfermería que labora en hospitales públicos y privados
Authors: López González Juan Alberto , Barahona Herrejón Norma Angélica , Estrada Preciado Martiliana , Favela Ocaño María Alejandra , Cuen Tanori Francisco Andres 
Published: February 2015

Antecedentes. Un profesional competente de enfermería es aquel que brinda una atención integral respecto del cuidado de enfermería frente a actividades y problemas del contexto, con idoneidad y compromiso ético, el cual integra el saber ser, el saber hacer y el saber conocer. El objetivo fue determinar si existe diferencia en el nivel de competencia del personal de enfermería asistencial según su formación académica.Método. Es un estudio de tipo no experimental, de diseño transversal, cuyo alcance es descriptivo correlacional no causal; la muestra representativa fue de 122 enfermeras (os) que laboran en hospitales públicos y privados de Hermosillo, Sonora. Resultados. Entre los resultados está que la edad predominante de la población es de 33-46 años de edad (= 32,66, DE=7,60), la mayoría del sexo femenino 73%, con grado universitario escolarizado 52,5%, con un tiempo de finalizado menor a los 4 años en un 45,9% y con una antigüedad laboral entre 1 a 5 años. La calificación obtenida en la evaluación total es de medianamente competente Fx 3, 3.4 % , (= 72,49 DE= 3,74), por cada competencia, el resultado fue el siguiente HPAMPE (= 77.49 DE= 4.98), CACCH (= 71,69 DE= 6,38) y CAMS (= 63,01 DE= 9,34); por tanto, se rechazan las hipótesis planteadas. Conclusión. Se concluye que entre el profesional de enfermería evaluado no hay personas competentes, tan solo tres personas recibieron una calificación de medianamente competentes, con un nivel escolarizado de nivelación presencial; la mayor competencia se detectó en la HPAMPE , seguida por la CACCH, mientras que en la competencia CAMS no se halló competencia al respecto.
Acciones educativas dirigidas al personal médico y de enfermería para disminuir las infecciones del tracto sanguíneo relacionadas a catéteres venosos centrales
Authors: Villegas Sánchez Milena , Arias Jiménez Milena , Hernández de Mezerville Marcela 
Published: February 2015

Introducción. La bacteriemia relacionada a Catéter Venoso Central es una de las principales complicaciones en los pacientes a quienes se les instala un catéter intravascular. Las acciones educativas han mostrado disminución en la tasa de estas infecciones en diferentes estudios. El objetivo fue determinar la tasa de Infecciones del tracto sanguíneo relacionadas al catéter venoso central (ITS/CVC), en el Servicio de Cuidado Intensivo Neonatal, implementar las acciones preventivas y cuantificar el impacto.Metodología. Es un estudio descriptivo en donde se compara la tasa de ITS/CVC, antes y después de una intervención educativa, en los pacientes ingresados a SECIN. La tasa de ITS/CVC se obtuvo dividiendo el número de éstas entre el número de días-catéter y se multiplicó por 1 000.Resultado. Un resultado relevante es que en el periodo pre intervención se observa una tasa de 32,84 infecciones por 1 000 días (cuarto trimestre del 2012 y primer trimestre del 2013) y en el periodo post intervención la tasa fue de 8,28 infecciones por 1 000 días. (Tercer trimestre y cuarto trimestre del 2013).Conclusión. Se concluye que las acciones educativas para disminuir la tasa de ITS/CVC fueron efectivas.
Conocimientos previos acerca de métodos anticonceptivos y su relación con conocimientos adquiridos después de una intervención educativa con simulador
Authors: Posada Morales María Neyfeth , Mora Espinoza Bárbara De las Mercedes 
Published: February 2015

Introducción. El objetivo de este trabajo es relacionar conocimientos previos (pre-saberes) acerca de métodos anticonceptivos con los conocimientos adquiridos (saberes), después una intervención educativa con simulador.Método. Es un estudio realizado con 295 adolescentes escolarizados que cursan noveno, décimo y undécimo en una institución educativa pública. Es de tipo descriptivo. El proceso estuvo compuesto por tres fases; en la primera se midió conocimientos o saberes previos acerca de métodos anticonceptivos, mediante un cuestionario auto-informado; en la segunda se definió los contenidos y actividades de intervención para mejorar los conocimientos previos, y en la tercera fase de post-intervención educativa, se reevaluó los saberes adquiridos con el simulador. Resultados. Se detectó que los pre-saberes en métodos anticonceptivos son deficientes independientemente de la edad y la escolaridad, lo cual requiere planeación, desarrollo y evaluación de la estrategia de aprendizaje colectivo y cooperativo mediante talleres. En cuanto a los post-saberes, se obtuvo una calificación de deficientes a regulares, en el caso del condón masculino, mientras que el reconocimiento de métodos modernos como parche, anillo vaginal, dispositivo intrauterino, entre otros, se dio gracias al contacto directo con el simulador.Conclusiones. Se recalca que a pesar de las diferencias de edad y escolaridad, no hubo hallazgos relevantes que demostraran diferencias de conocimiento. En los pre-saberes, se encontró niveles de conocimiento deficientes sobre métodos anticonceptivos. El uso de simuladores como herramienta de aprendizaje demostró eficacia en los talleres; en cuanto a los simuladores posibilitan la ruptura de la barrera cognitiva, dado que el adolescente, en este caso, puede explorar y adquirir conocimiento al interaccionar con el objeto de aprendizaje.
Fluorescence In Situ Hybridization, Immunohistochemistry, and Next-Generation Sequencing for Detection of EML4-ALK Rearrangement in Lung Cancer
Authors: Pekar-Zlotin Marina , Hirsch Fred R. , Soussan-Gutman Lior , Ilouze Maya , Dvir Addie , Boyle Theresa , Wynes Murry , Miller Vincent A. , Lipson Doron , Palmer Gary A. , Ali Siraj M. , Dekel Shlomi , Brenner Ronen , Bunn Paul A. , Peled Nir 
Published: February 2015

Abstract

Background.
The U.S. Food and Drug Administration-approved method for detecting EML4-ALK rearrangement is fluorescence in situ hybridization (FISH); however, data supporting the use of immunohistochemistry (IHC) for that purpose are accumulating. Previous studies that compared FISH and IHC considered FISH the gold standard, but none compared data with the results of next-generation sequencing (NGS) analysis.

Materials and Methods.
We studied FISH and IHC (D5F3 antibody) systematically for EML4-ALK rearrangement in 51 lung adenocarcinoma patients, followed by NGS in case of discordance.

Results.
Of 51 patients, 4 were positive with FISH (7.8%), and 8 were positive with IHC (15.7%). Three were positive with both. NGS confirmed that four of the five patients who were positive with IHC and negative with FISH were positive for ALK. Two were treated by crizotinib, with progression-free survival of 18 and 6 months. Considering NGS as the most accurate test, the sensitivity and specificity were 42.9% and 97.7%, respectively, for FISH and 100% and 97.7%, respectively, for IHC.

Conclusion.
The FISH-based method of detecting EML4-ALK rearrangement in lung cancer may miss a significant number of patients who could benefit from targeted ALK therapy. Screening for EML4-ALK rearrangement by IHC should be strongly considered, and NGS is recommended in borderline cases. Two patients who were negative with FISH and positive with IHC were treated with crizotinib and responded to therapy.
Analysis of Upscaling Algorithms in Heterogeneous Reservoirs with Different Recovery Processes
Authors: Ampomah W. , Balch R. S. , Grigg R. B. 
Published: February 2015

Abstract
Even though computer power has increased dramatically over the years it is still essential to upscale detailed geological models before reservoir simulation, to decrease simulation time and cost. This paper presents the upscaling of a high resolution geological model constructed for a reservoir in the Anadarko basin. The Dykstra-Parsons coefficient computed indicates a highly heterogeneous and complex reservoir.
This work compares different upscaling algorithms for both primary and secondary reservoir depletion processes. Also, the effects of different boundary conditions were tested. Numerous upscaling ratios were studied to ascertain ideal upscaled grid sizes. Prior to property upscaling, quality check techniques which include cell volume, cell angles and cell inside out computations were applied. This ensured consistency with the fine-scale model and reduced simulation errors. Additional quality check techniques were applied to the coarse models after the property scale-up. Simulation results and volume computations from the fine model were used as a benchmark for the study. Several coarse simulation models were developed and compared to the fine-scale model to study the effect of upscaling techniques on the quality of simulation results. The deviation of coarse simulation results from the benchmark were statistically quantified and ranked according to the respective upscaling algorithm. The closest coarse model to the fine scale was used to construct a history match.
The results showed clearly that different depletion processes had significant effects on the upscaling techniques employed. Nearly all of the algorithms worked well for primary depletion processes, for example, with less favorable outcomes for the waterflood utilizing the same models. Simulation results were very sensitive to both the type of boundary condition employed and the upscaling ratio. The quality checks ensured good orthogonal grid geometry, which eventually reduced overall simulation errors and saved simulation time. The methodology presented in this paper establishes a road map to follow when upscaling geological models to ensure accuracy in reservoir modeling.
Integrated Carbonate Matrix Acidizing Model for Optimal Treatment Design and Distribution in Long Horizontal Wells
Authors: Li Xiaohe , Gomaa Ahmed , Nino-Penaloza Andrea , Chaudhary Saleem 
Published: February 2015

Abstract
Optimal design of matrix acidizing treatments in long horizontal wells represents a technical challenge for stimulation engineers. Acid coverage and distribution are particularly challenging because differences in formation permeability can be a predominant feature in horizontal wells. If acid is not effectively diverted in formations with high permeability anisotropy, some treated zones may become acid sinks while other zones are left with inadequate acid stimulation. Acid coverage and distribution depend on chemical and physical processes at different length scales. In the microscopic or pore scale in carbonate formations, acid creates flow paths of high permeability or wormholes which can affect the further penetration of the acid treatment downhole. In the macroscopic scale, fluid hydraulics in both wellbore and reservoir affect acid distribution as well.
In this paper, we present an integrated model in both the microscopic and macroscopic scale to simulate multistage acidizing treatments in limited-entry and open-hole long horizontal wells. We propose a modified semi-analytical model to describe the wormholing phenomena and chemical diversion by using core flow test data. The reservoir heterogeneity in both vertical and horizontal directions is taken into consideration in this model. In addition, we establish a dynamic wellbore hydraulics model to characterize the fluid mechanics inside the wellbore with considerations for acid distribution, pressure drop due to friction loss, fluid rheology and fluid flow behavior.
The integration of the elements mentioned above makes of this model a powerful tool to optimize critical parameters for matrix treatment design and distribution such as treatment interval length, diverter and acid volume, number of stages, and optimal rates. We present a case study to investigate the effects of chemical diversion, acid injection rate and volume on the performance of the treatment. The results of acid distribution, wormhole length and skin factor for each treatment interval as functions of time are analyzed. The evolution profiles of wellbore hydraulics during the acidizing treatment are also discussed.
How Big Data Will Change Accounting
Authors: Warren J. Donald , Moffitt Kevin C. , Byrnes Paul 
Published: February 2015

SYNOPSIS
Big Data will have increasingly important implications for accounting, even as new types of data become accessible. The video, audio, and textual information made available via Big Data can provide for improved managerial accounting, financial accounting, and financial reporting practices. In managerial accounting, Big Data will contribute to the development and evolution of effective management control systems and budgeting processes. In financial accounting, Big Data will improve the quality and relevance of accounting information, thereby enhancing transparency and stakeholder decision making. In reporting, Big Data can assist with the creation and refinement of accounting standards, helping to ensure that the accounting profession will continue to provide useful information as the dynamic, real-time, global economy evolves.
Big Data in Accounting: An Overview
Authors: Vasarhelyi Miklos A. , Kogan Alexander , Tuttle Brad M. 
Published: February 2015

SYNOPSIS
This paper discusses an overall framework of Big Data in accounting, setting the stage for the ensuing collection of essays that presents the ongoing evolution of corporate data into Big Data, ranging from the structured data contained in modern ERPs to loosely connected unstructured and semi-structured information from the environment. These essays focus on the sources, uses, and challenges of Big Data in accounting (measurement) and auditing (assurance). They consider the changing nature of accounting records and the incorporation of nontraditional sources of data into the accounting and auditing domains, as well as the need for changes in the accounting and auditing standards, and the new opportunities for audit analytics enabled by Big Data. Additionally, the papers discuss the interaction of Big Data and traditional sources of data, as well as Big Data's impact on audit judgment and behavioral research. Both accounting academics and accounting practitioners will benefit from learning about the significant potential benefits of Big Data and the inevitable challenges and obstacles in the way of its utilization. Advanced accounting students would also benefit from exposure to these emerging issues to enhance their future career development.