bluuebunny/crossref_metadata_2025_split huggingface dataset:
Highly Porous Fe2O3/KIT-6 with Mg Substitution for Heterogeneous Fenton Oxidation of Imidacloprid with Enhanced Catalytic Activity
Authors: Zheng Chunming , Cheng Xiangzhi , Chen Peipei , Yang Chuanwu , Bao Shoumin , Xia Jun , Guo Minglin , Sun Xiaohong 
Published: February 2015

Abstract
A highly porous Fe2O3/KIT-6 with Mg substitution (MgO@Fe2O3/KIT-6) has been synthesized through a coincipient wetness impregnation of Fe and Mg into ordered mesoporous KIT-6 silica. The postreaction catalyst showed higher degradation efficiency than as-prepared catalyst for imidacloprid (IMI). Higher BET surface area, broader pore size distribution of postreaction catalyst and Mg leaching during the reaction processes might be responsible for the enhanced catalytic activities of MgO@Fe2O3/KIT-6 for the heterogeneous Fenton oxidation of IMI.
Preparation of Silver Nanoparticles Stabilized by Two Different Thermoresponsive Poly(N-isopropylacrylamide)-g-Poly(ethylene oxide) Copolymers
Authors: Gao Jiangang , Shi Wenhua , Ding Yujie , Zhang Yujuan , Zheng Benpei , Zhou Wenjuan , Chen Hongwei 
Published: February 2015

Abstract
With a similar composition but different monomer sequence distributions in the copolymer backbones, two poly(N-isopropylacrylamide)-g-poly(ethylene oxide) (PNIPAM-g-PEO) copolymers were synthesized at different temperatures of 29 and 45 °C, in the presence of which Ag nanoparticles (NPs) were successfully prepared by in situ reduction at 25 and 41 °C, respectively. The experimental results show that both the copolymers can effectively stabilize Ag NPs, and the copolymer PNIPAM-g-PEO/45 has a better stabilizing and dispersing effect when the preparation temperature of Ag NPs is 25 °C.
Comparison of classifications of vascular plants of China
Authors: Zhang Li-Bing , Gilbert Michael G. 
Published: February 2015

AbstractChina has 31,362 species of vascular plants, more than any country on the planet except Brazil and Colombia, and this number represents 8%–12% of the world diversity of vascular plants. With the two largest completed floristic projects in the world, a full documentation of the vascular plants of China has been published twice over the past 54 years: the Chinese‐language Flora Reipublicae Popularis Sinicae (FRPS), 1959–2004, and the English‐language Flora of China (FOC), 1994–2013. With the advent of molecular phylogenetics the past half century has witnessed dramatical changes of classifications of vascular plants. In this paper, we compare the circumscriptions of all families of vascular plants occurring within China in FRPS, FOC, and the Angiosperm Phylogeny Group (APG) III system when applicable, and summarize familial assignments of all controversial genera in the different classifications. Such comparison to some extent reflects the history of classification of vascular plants and differences between classical morphology‐based classifications and modern DNA (mainly chloroplast) sequence data‐based classifications of vascular plants.
Neotypification of Paecilomyces hepiali (Hypocreales)
Authors: Wang Wen-Jing , Li Yi , Wang Xiao-Liang , Kirk Paul M. , Yao Yi-Jian 
Published: February 2015

AbstractPaecilomyces hepiali is an important fungus for medicinal and healthcare products generating an economic value of one billion CNY annually. It has been the subject of much research attention, especially due to its isolation from field collections of Ophiocordyceps sinensis (the caterpillar fungus or Dōng chóng xià căo) prized for its reputed medicinal properties. However, research on this important fungus is currently hampered by the fact that the holotype and ex‐type strain are unavailable for study on loan and in person due to institutional policies of confidentiality. Thus the holotype is effectively “lost” for the purposes of the Code. To facilitate further research and to enable the unambiguous application of the name, a neotype is designated for P. hepiali, based on a recent collection from the type locality.
El Sentido de lo Común como Experiencia de Construcción Democrática: Estudio de Casos en Escuelas en Contextos de Pobreza en Chile
Authors: Redon Pantoja Silvia , Angulo Rasco José Félix , Vallejos Natalia I. 
Published: February 2015

El trabajo de investigación que se presenta, expone los resultados con relación al sentido de lo común como experiencia democrática en jóvenes de sectores de extrema pobreza en Chile. Las unidades del estudio correspondieron a seis escuelas chilenas, bajo el diseño de Estudios de Caso colectivos e instrumentales. Producto del análisis de los datos (discurso, registros de observación, entrevistas, grupos focales y documentos), emergen líneas discursivas que se aglutinan en torno a cinco categorías matrices. En este artículo, sólo desarrollamos la categoría de pobreza, por ser la más densa y extensa. En ella hemos encontrado que el sentido de lo común se desvanece como experiencia democrática en escuelas que reproducen la profunda segmentación social que presenta Chile en su tejido social. Segmentación que se traduce en percepciones de dos mundos: “los de arriba” y “los de abajo”. En esta lógica tanto la escuela púbica, como el espacio de salud, la vivienda, el barrio, la protección civil y los transportes son servicios de mala calidad para un sector de la población que no puede comprar servicios de mejor calidad. En su escuela, su barrio y en su experiencia de lo social dichos jóvenes transitan por una vida amenazada, rodeada por vertederos, y por la ausencia de derechos a tener derechos. La pérdida de esperanza en la meritocracia (i.e. igualdad de oportunidades) se evidencia en sus relatos, que reflejan las distancias en sus posiciones sociales, lo que les indica que no pueden competir con el capital cultural y social que da la cuna de origen y que la escuela en el contexto chileno de políticas públicas reproduce, impidiendo e imposibilitando el surgimiento de un espacio político y ciudadano de lo común.
Certain identities, connection and explicit formulas for the Bernoulli and Euler numbers and the Riemann zeta-values
Authors: Yakubovich Semyon 
Published: February 2015

Abstract
Various new identities, recurrence relations, integral representations, connection and explicit formulas
are established for the Bernoulli and Euler numbers and the values of
Riemann's zeta function ζ(s). To do this, we explore
properties of some Sheffer's sequences of polynomials related to
the Kontorovich–Lebedev transform.
From regular periodic micro-lens arrays to randomized continuous phase profiles
Authors: Cumme Matthias , Deparnay Arnaud 
Published: February 2015

Abstract
Illumination systems for various industrial applications, e.g., in semiconductor industries and medical treatment techniques, require a specific and well-adapted intensity distribution with maximum efficiency, best achievable accuracy, and highest flexibility in the selection of the target light field. Additionally, for particular applications, all these aspects have to be fulfilled simultaneously for different wavelengths. In most of these situations, the challenging optical specifications are accompanied by the requirement of a cost-efficient fabrication technique, suitable at least for batch or small series production. In the present contribution, we first retrace the development steps and performance progress of micro-optical-based beam shaping setups. Secondly, we discuss the possibilities resulting from a combination of both refractive and diffractive optical characteristics. Especially, we show that a well-adapted combination of refractive and diffractive properties in a single element allows us to create achromatic diffusers with exceptional flexibility and high conversion efficiency.
High-end spectroscopic diffraction gratings: design and manufacturing
Authors: Glaser Tilman 
Published: February 2015

Abstract
Diffraction gratings are key components for spectroscopic systems. For high-end applications, they have to meet advanced requirements as, e.g., maximum efficiency, lowest possible scattered light level, high numerical aperture, and minimal aberrations. Diffraction gratings are demanded to allow spectrometer designs with highest resolution, a maximal étendue, and minimal stray light, built within a minimal volume. This tutorial is intended to provide an overview of different high-end spectroscopic gratings, their theoretical design and manufacturing technologies.
Micro-optics and lithography simulation are key enabling technologies for shadow printing lithography in mask aligners
Authors: Voelkel Reinhard , Vogler Uwe , Bramati Arianna , Noell Wilfried 
Published: February 2015

Abstract
Mask aligners are lithographic tools used to transfer a pattern of microstructures by shadow printing lithography onto a planar wafer. Contact lithography allows us to print large mask fields with sub-micron resolution, but requires frequent mask cleaning. Thus, contact lithography is used for small series of wafer production. Proximity lithography, where the mask is located at a distance of typically 30–100 μm above the wafer, provides a resolution of approximately 3–5 μm, limited by diffraction effects. Proximity lithography in mask aligners is a very cost-efficient method widely used in semiconductor, packaging and MEMS manufacturing industry for high-volume production. Micro-optics plays a key role in improving the performance of shadow printing lithography in mask aligners. Refractive or diffractive micro-optics allows us to efficiently collect the light from the light source and to precisely shape the illumination light (customized illumination). Optical proximity correction and phase shift mask technology allow us to influence the diffraction effects in the aerial image and to enhance resolution and critical dimension. The paper describes the status and future trends of shadow printing lithography in mask aligners and the decisive role of micro-optics as key enabling technology.
The consequences of Petzval correction in lithographic designs
Authors: Shafer David 
Published: February 2015

Abstract
Several design examples show how correcting Petzval curvature in high NA lithographic designs leads to much of the design complexity. There are two cases in which much simpler designs are possible, neither of them practical with today’s technology. One is that of a curved object and/or image system, where no attempt at all is made to control Petzval curvature. The other case is where a diffractive surface is used in the design, which allows Petzval to be easily corrected in relatively simple designs. A very simple 1.1 NA all-refractive immersion design is shown that uses one diffractive surface.
Structural and morphological properties
of HA-ZnO powders prepared for biomaterials
Authors: Moldovan Marioara , Prodan Doina , Popescu Violeta , Prejmerean Cristina , Saroși Codruta , Saplonţai Monica , Țălu Stefan , Vasile Eugeniu 
Published: February 2015

Abstract
The purpose of this study was to investigate the
structural and morphological properties of hydroxyapatite
– zinc oxide (HA-ZnO) powders prepared to be used
in an endodontic sealer formulation. The HA-ZnO was
synthesized from hydroxyapatite (HA) in the presence
of zinc oxide (ZnO) sol. The starting reagents were CaO,
H3PO4 and a suspention of ZnO (25% in water). Following
precipitation, the obtained sol was subjected to heat
treatment at 110°C, 400°C, 850°C and 1050°C. The study
focused on the influence of the thermal treatment on the
cristallinity of precipitated powders. X-ray diffraction
was used in order to study the structural properties
of the obtained powder. Fourier Transform Infrared
Spectroscopy (FT-IR) was used in order to evaluate the
interactions between HA and ZnO. The morphology of the
samples was studied by Scanning Electron Microscopy
(SEM). Transmission Electron Microscopy and High
Resolution Transmission Electron Microscopy (TEM,
HRTEM) were used for the determination of particle size
and fractal analysis. The fractal analysis of images using
the standard box-counting method is presented and the
results are discussed. It was demonstrated that the fractal
dimension analysis is a useful method to quantitatively
describe the complex microstructures and it can reveal the
relation between fractal parameters.
Nanocrystalline ferrites used as adsorbent in the
treatment process of waste waters resulted from
ink jet cartridges manufacturing
Authors: Voda Raluca , Negrea Adina , Lupa Lavinia , Ciopec Mihaela , Negrea Petru , Davidescu Corneliu Mircea , Butnariu Monica 
Published: February 2015

Abstract
Dye pollution in waste waters causes serious
environmental and health risk, legislation problems
and is a serious challenge to environmental scientists.
In this work the treatment of waste waters resulted
from ink jet cartridges manufacturing, using different
nanocrystalline ferrites MIIFe2O4 (MII = Mg, Cu) as
adsorbent materials, has been investigated. The ferrites
were obtained by thermal decomposition at 500°C of
the magnesium and copper ferrioxalate coordination
compounds. The nanocrystalline ferrites powder was
investigated by various methods such as XRD, IR,
SEM and EDX. The discoloration of the waste waters
has been spectrophotometrically studied. The ferrites
could be removed easily after adsorption by using
a magnetic filtration process. The results indicated that
the maximum adsorption efficiency was obtained after
60 min of treatment, magnesium ferrite showing a higher
efficiency than the copper ferrite in the treatment process
of waters resulted from ink jet cartridges manufacturing.
Corps de Siegel
Authors: Gaudron Éric , Rémond Gaël 
Published: February 2015

Abstract
Nous appelons corps de Siegel une extension algébrique du corps des nombres
rationnels sur laquelle un lemme de Siegel vaut. C’est classiquement le cas pour les
corps de nombres mais aussi pour le corps des nombres algébriques d’après Roy–Thunder et Zhang. Nous donnons de nouveaux exemples. Nous montrons aussi qu’il existe des corps qui ne sont pas de Siegel, à savoir les corps de degré infini
qui satisfont la propriété de Northcott, introduite par Bombieri–Zannier. Notre
démarche repose sur l’étude de plusieurs séries de minima successifs associés à un
espace adélique. Les différentes propriétés du corps se lisent sur des quantités
généralisant la constante d’Hermite. Dans le cas des nombres algébriques, nous
calculons leurs valeurs exactes.
We define a Siegel field to be a subfield K of
the algebraic numbers over which a Siegel lemma holds. Known examples
include number fields (classical geometry of numbers) and the field of
algebraic numbers itself (Roy–Thunder and Zhang). We investigate the
situation for other fields. We provide new examples such as real
algebraic numbers or Hilbert class fields towers, as well as
counterexamples. We also relate the Siegel condition to other
properties of K, for example the Northcott property introduced by
Bombieri–Zannier. For this we define several series of successive
minima for an adelic vector space over K, which give rise to diverse
numerical invariants of K (akin to Hermite’s constant). When K is
the field of algebraic numbers, we determine their exact values.
K-theoretic duality for hyperbolic dynamical systems
Authors: Kaminker Jerome , Putnam Ian F. , Whittaker Michael F. 
Published: February 2015

Abstract
The K-theoretic analog of Spanier–Whitehead duality for noncommutative

C
*

{C^{*}}

-algebras is shown to hold for the Ruelle algebras associated to irreducible Smale spaces. This had previously been proved only for shifts of finite type. Implications of this result as well as relations to the Baum–Connes conjecture and other topics are also considered.
Ultrasound-assisted green synthesis of silver nanoparticles and their incorporation in antibacterial cellulose packaging
Authors: Popov Vladimir , Hinkov Ivaylo , Diankov Svetlomir , Karsheva Maria , Handzhiyski Yordan 
Published: February 2015

AbstractThe antimicrobial activity of nanoparticles (NPs) depends of the surface area in contact with microorganisms. The large surface area of the nanoparticles enhances their interaction with the microbes. In this work, a green, simple, rapid, and efficient ultrasound-assisted reduction method for silver nanoparticles (AgNP) synthesis is presented. For the synthesis, an aqueous solution of silver nitrate, ethanol, and ammonia was used. The adopted method can be easily implemented for any kind of scientific or industrial application due to its cost-effective nature. The effect of sonication time on the nanoparticle formation was investigated. Silver nanoparticles were analyzed through transmission electron microscopy and UV-vis spectroscopy. Antimicrobial additives can be incorporated in mass in different matrixes (polymeric or cellulosic), which is a convenient methodology to achieve antimicrobial activity. In this work, silver nanoparticles were incorporated in cellulose using an ultrasonic bath technique. The most important aspect of cellulose containing silver nanoparticles prepared by this method is its high antimicrobial efficiency. The microbiological study was carried out by a standard agar technique. The analysis showed that cellulose with incorporated silver nanoparticles exhibited strong antimicrobial activity against
Functional quantization-based stratified sampling methods
Authors: Corlay Sylvain , Pagès Gilles 
Published: February 2015

Abstract
In this article, we propose several quantization-based stratified sampling methods to reduce the variance of a Monte Carlo simulation. Theoretical aspects of stratification lead to a strong link between optimal quadratic quantization and the variance reduction that can be achieved with stratified sampling. We first put the emphasis on the consistency of quantization for partitioning the state space in stratified sampling methods in both finite and infinite-dimensional cases. We show that the proposed quantization-based strata design has uniform efficiency among the class of Lipschitz continuous functionals.
Then a stratified sampling algorithm based on product functional quantization is proposed for path-dependent functionals of multi-factor diffusions. The method is also available for other Gaussian processes such as Brownian bridge or Ornstein–Uhlenbeck processes. We derive in detail the case of Ornstein–Uhlenbeck processes.
We also study the balance between the algorithmic complexity of the simulation and the variance reduction factor.
Postprandial decrease in LDL-cholesterol in men
with metabolic syndrome
Authors: Skoczyńska Anna , Turczyn Barbara , Wojakowska Anna , Kreczyńska Bogusława , Skoczyńska Marta , Wojtas Kamila 
Published: February 2015

Abstract
Background: In some epidemiological studies,
blood lipids are determined at non-fasting state, which
may impact cardiovascular risk estimation. The aim of
this study was to evaluate postprandial LDL-C changes in
men with newly diagnosed metabolic syndrome (MetSy).
Methods: 36 male patients were examined: 12 men with
and 24 men without MetSy. The fat tolerance test was
performed before and after a three-month hypolipidemic
treatment. Serum lipids were measured using routine
methods, lipid peroxides (LPO) colorimetrically, apoli-
poproteins A-I, B, and hsCRP immunoturbidimetrically.
Results: The postprandial increase in triglycerides was
associated with a decrease in LDL-C and a small decrease
in apo B. In men with MetSy, the mean change in LDL-C
(-19.5 ± 2.3 mg/dl) was greater than in healthy men (-5.7 ±
3.8 mg/dl). All lipid changes (ΔTG, ΔLDL-C and ΔLPO) were
linearly dependent on the postprandial non-LDL-choles-
terol. After three months of hypolipidemic treatment, in
all men with MetSy, the apoB/apoA-I ratio remained the
same as before the therapy. Conclusion: In men diagnosed
with MetSy, postprandial decreases in LDL-cholesterol
may cause underestimation of cardiovascular risk. After
three months of hypolipidemic treatment, there was only
a partial reduction in this risk, as the apoB/apoA-I ratio
remained the same.
Risk factors involved in orofacial cleft
predisposition – review
Authors: Kawalec Agata , Nelke Kamil , Pawlas Krystyna , Gerber Hanna 
Published: February 2015

Abstract
Clefts that occur in children are a special topic.
Avoiding risk factors, and also an early diagnosis of cleft
possibility can result in minimizing or avoiding them.
If on the other hand when clefts occur they require a
long-term, multistage specialized treatment. Etiology of
clefts seems to be related to many factors. Factors such
as genetic, environmental, geographic and even race
factors are important. Identification of risk factors can
lead to prevention and prophylactic behaviors in order
to minimize its occurrence. Exposure to environmental
factors at home and work that lead to cleft predisposition
should not be disregarded. It seems that before planning
a family it would be wise to consult with doctors of different
specializations, especially in high-risk families with
cleft history in order to analyze previous lifestyle. Clefts
are very common in hereditary facial malformations and
are causing a lot of other irregularities in the head and
neck region. In this paper after a brief papers review
authors present socio-geographic, environmental and
also work place related factors that are influencing pregnant
women condition and should be taken under serious
consideration.
Crystal structure of bis(μ2-S-(Z)-3-(hydroxido(phenyl)methylene)-1,1- diphenyl thioureaa-κO,S,S)hexacarbonyl dirhenium(I), C60H52N4O8Re2S2
Authors: Mukiza Janvier , Gerber Thomas I. A. , Hosten Eric C. , Betz Richard 
Published: February 2015

Abstract C60H52N4O8Re2S2, monoclinic, P21/c (no. 14), a = 24.2146(6) Å, b = 8.9277(2) Å, c = 31.2847(7) Å, β = 118.864(2)°, V = 5923.1 Å3, Z = 4, Rgt(F) = 0.0360, wRref(F2) = 0.0786, T = 200 K.
Viscosity of Se–Te glass-forming system
Authors: Koštál Petr , Málek Jiří 
Published: February 2015

Abstract
This work is focused on viscosity of chalcogenide system Se–Te. Viscosity values of four glass-forming compositions in this system (containing 5, 10, 20 and 30 at.% of tellurium) were measured by penetration and parallel-plate method in the region of undercooled melt and glass. These results are combined with literature data for melt region. The kinetic fragility and viscosity glass transition temperature values obtained by different methods are calculated from measured data.
Technetium sulfide – formation kinetics, structure and particle speciation
Authors: German Konstantin E. , Shiryaev Andrey A. , Safonov Alexey V. , Obruchnikova Yana A. , Ilin Viktor A. , Tregubova Varvara E. 
Published: February 2015

Abstract
Technetium sulfide formation kinetics was studied in the pH range 8 − 12 in presence of Na2S and phosphate buffer
solution. The conditions for separation of Tc sulfide micro and nanoparticles were found with ultramicrocentifugation and the
values of Tc sulfide solubility were demonstrated to be dependent on the Na2S concentration as
C(Tc3S10+x
) =− 9E − 5 ln [Na2S] − 2 · 10
–5 M. The composition of Tc sulfide precipitate was
elucidated with EXAFS, RBS and chemical analyses as Tc3S10+x
or [Tc3(μ3 − S)(S2)3(S2)3/3]
n
in
agreement with recent Lukens data.
Funktionalisierung und Vernetzung von Poly(silylenmethylenen) Functionalization and Cross-Linking of Poly(silylenemethylenes)
Authors: Uhlig Wolfram 
Published: February 2015

Abstract
Functionalized 1,3-disilacyclobutanes (RSiX-CH2)2 have been prepared by protodesilylation of aminosubstituted 1,3-disilacyclobutanes with triflic acid and by conversions with nucleo­ philes. The ring-opening polymerisations of these compounds lead to novel high molecular weight poly(silylenemethylenes), which are characterized by a linear structure and alternating silicon and carbon atoms in the main chain. The hydrosilylation reaction between the poly(silylenemethylenes) (RSiH-CH2)n and (RSiVi-CH2)n results in a polymer network which may serve as an interesting preceramic material. The structures of the polymers were proven by NMR spectroscopy (29Si, 13C, 1H).