bluuebunny/crossref_metadata_2025_split huggingface dataset:
Voltammetric behavior of rutin at a boron-doped diamond electrode. Its electroanalytical determination in a pharmaceutical formulation
Authors: Pınar Pınar , Yardım Yavuz , Şentürk Zühre 
Published: July 2013

Abstract
This paper examined for the first time, the possibilities of the usage of a boron-doped diamond electrode for the redox behavior of rutin using cyclic and adsorptive stripping voltammetry. The cyclic voltammograms showed a pair of redox peaks at lower potentials followed by an irreversible oxidation peak at higher positive potential. Using square-wave adsorptive stripping voltammetry, the compound yielded a well-defined voltammetric response in Britton-Robinson buffer, pH 4.0 at +0.48 V (vs. Ag/AgCl) (after 60 s accumulations at a fixed potential of 0.2 V). The calibration curve was linear in the concentration range from 0.01 µg mL−1 to 0.1 µg mL−1 (1.64×10−8 M − 1.64×10−7 M). A detection limit of 0.0017 µg mL−1 (2.78×10−9 M) was observed without any chemical modifications and electrochemical surface pretreatments. As an example, the practical applicability of boron-doped diamond electrode was tested with the measurement of rutin in dietary supplement products.
In vitro biological activity comparison of some hydroxyapatite-based composite materials using simulated body fluid
Authors: Czikó Melinda , Bogya Erzsébet-Sára , Barabás Réka , Bizo Liliana , Stefan Răzvan 
Published: July 2013

Abstract
Hydroxyapatite composites are the main biomaterials used for metal implant coatings. Their in vitro study is very important. That is why their behavior was monitored in simulated body fluid (SBF), which is a solution with ion concentrations and pH value similar to those of human blood plasma. Silica, chitosan and gelatin-doped hydroxyapatite-based biomaterials were studied in SBF; the samples were characterized pre-, during and post-SBF immersion using infra-red, scanning and transmission electron spectroscopy and X-ray diffraction methods. The solubility of materials in SBF was determined, and the variation of Ca2+ and phosphorus concentration was also recorded during SBF experiments. The results were compared and their in vitro biological activity was determined.
Territoire comme espace d'attractivité et de déclinaison de l'intelligence économique en intelligence territoriale
Authors: Torra Mohamed 
Published: July 2013

Au-delà des sciences de l’information et de la communication, l’intelligence territoriale s’enrichit de multiples apports transdisciplinaires. Son enjeu est de rationaliser les rapports entre différents acteurs pour partager et échanger des connaissances et savoirs puis assurer leur gestion et protection. Quant aux défis à relever, ils résultent de la diversité des acteurs et de la complexité de leurs relations. L’objectif de notre étude est de développer, une meilleure compréhension, en vue de concevoir et de mettre en place un dispositif de l’IT. Pour savoir s’il est raisonnable d’assigner à ce concept cette capacité de réponse aux besoins des acteurs en termes de connaissances pour la compréhension de leur territoire et la valorisation de ses ressources matérielles et informationnelles. Classification JEL : R58, R11, O18, M15
Technologies de réseaux et espaces locaux : vers une nouvelle intelligence économique au service des territoires – Les leçons de quelques expériences récentes en France
Authors: Abdelmalki Lahcen 
Published: July 2013

L’efficacité croissante des moyens de communication et du traitement de l’information facilite l’internationalisation des firmes et contribue à une remise en cause certaine de l’identité et de l’origine des produits. Cette contribution entend montrer que les relations entre industrie et géographie est de plusieurs natures : pas seulement « Top down », des décisions de la firme imposées à la sphère sociétale, mais aussi de type « Bottum up ». Les firmes se délocalisent et se relocalisent pour mettre en valeur leurs actifs, mais à ce jeu les territoires ne sont pas inactifs. Une nouvelle intelligence économique au service des territoires est en passe de naître du perfectionnement et de la diversification des usages des nouvelles technologies de l’information et de la communication appliquées aux politiques de développement local. Classification JEL : L86, O33, M21, R11, R58
L'entrée en sexualité à Rabat : les nouveaux « arrangements » entre les sexes
Authors: Bakass Fatima , Ferrand Michèle 
Published: July 2013

Au Maroc, l’ordre social et religieux repose encore aujourd’hui sur des valeurs telles que l’honneur et le prestige du groupe familial qui proscrivent la sexualité féminine prénuptiale, et font de la préservation de l’hymen la preuve irréfutable de la réussite de l’éducation familiale. À travers l’enquête qualitative ECAF menée entre 2006 et 2008, l’article montre que l’effet cumulé de la crise (qui réduit pour les jeunes hommes l’accès au marché du travail et la possibilité d’entretenir une famille) et de la généralisation de la scolarisation (plus particulièrement des jeunes filles) a entraîné un retard de l’âge au mariage et favorisé le développement d’une sexualité prémaritale. Les individus non mariés vivent alors dans une tension continue entre leurs aspirations affectivo-sexuelles et le respect des normes sociales et religieuses qui considèrent déviante la sexualité hors union. La sexualité étant de plus en plus vécue comme une expérience individuelle, chacun est amené à opérer une sorte de « bricolage culturel », possible du fait que les actes sexuels ne sont pas directement observables et que le contrôle social fléchit avec les transformations de la société. Le recours à une sexualité non pénétrative apparaît alors comme un « arrangement » nouveau entre les sexes, permettant de transgresser l’interdit sur la sexualité prénuptiale tout en en respectant l’élément essentiel : la virginité féminine.
Attitudes des professionnels de santé à l'égard de la contraception d'urgence au Ghana et au Burkina Faso
Authors: Mayhew Susannah , Osei Ivy , Bajos Nathalie 
Published: July 2013

Les études sur les attitudes et les pratiques des professionnels de santé en Afrique subsaharienne à l’égard de la contraception d’urgence sont rares. De telles données peuvent aider à guider l’élaboration des programmes contraceptifs dans ces pays. Trente et un entretiens semi-directifs ont été réalisés auprès d’un échantillon ad hoc de professionnels de la santé reproductive au Ghana et au Burkina Faso, lors de l’enquête Emergency Contraception in Africa (ECAF) menée en 2006-2007. Une typologie des réponses a été établie, reflétant à la fois leurs attitudes et leurs pratiques vis-à-vis de la contraception d’urgence. Leurs attitudes y sont largement favorables. Si la plupart des professionnels du Burkina Faso craignent qu’un usage régulier remplace le recours au préservatif, accroissant ainsi le risque d’infection par le VIH, ils sont nombreux au Ghana à souligner que la contraception d’urgence pourrait permettre de réduire le nombre de grossesses non souhaitées. Globalement, les répondants souhaitent limiter la distribution de la contraception d’urgence aux centres de soins et aux pharmacies, et leur pratique de prescription apparaît « réactive » plutôt que « proactive ». Leurs attitudes à l’égard des personnes qui demandent la contraception d’urgence sont variées : celles et ceux qui ont subi un échec contraceptif dû à la méthode utilisée sont mieux perçus que celles et ceux qui viennent parce qu’ayant mal utilisé leur contraceptif ou pas utilisé du tout.
IL-17 Receptor A Signaling Is Protective in Infection-Stimulated Periapical Bone Destruction
Authors: AlShwaimi Emad , Berggreen Ellen , Furusho Hisako , Rossall Jonathan Caleb , Dobeck Justine , Yoganathan Subbiah , Stashenko Philip , Sasaki Hajime 
Published: July 2013

Abstract
IL-17 is a pleiotropic cytokine produced by Th17 T cells that induces a myriad of proinflammatory mediators. However, different models of inflammation report opposite functional roles of IL-17 signal in terms of its effects on bone destruction. In this study we determined the role of IL-17RA signal in bone resorption stimulated by dentoalveolar infections. Infrabony resorptive lesions were induced by surgical pulp exposure and microbial infection of mouse molar teeth. IL-17 was strongly induced in periapical tissues in wild-type (WT) mice by 7 d after the infection but was not expressed in uninfected mice. Dentoalveolar infections of IL-17RA knockout (KO) mice demonstrated significantly increased bone destruction and more abscess formation in the apical area compared with WT mice. Infected IL-17RA KO mice exhibited significantly increased neutrophils and macrophages compared with the WT littermates at day 21, suggesting a failure of transition from acute to chronic inflammation in the IL-17RA KO mice. The expression of IL-1 (both α and β isoforms) and MIP2 were significantly upregulated in the IL-17RA KO compared with WT mice at day 21 postinfection. The development of periapical lesions in IL-17RA KO mice was significantly attenuated by neutralization of IL-1β and MIP2. Taken together, these results demonstrate that IL-17RA signal seems to be protective against infection-induced periapical inflammation and bone destruction via suppression of neutrophil and mononuclear inflammation.
Coatings, Marine
Authors: Brady Robert F. , Drisko Richard W. ,   Updated by Staff
Published: July 2013

Abstract
The marine environment is highly aggressive. Materials in marine service are constantly exposed to water, corrosive salts, strong sunlight, extremes in temperature, mechanical abuse, and chemical pollution in ports. This climate is very severe on ships, buoys, navigational aids, platforms, etc. Marine coatings are the most important, cost‐effective means to preserve steel and other metals in the marine environment. A corrosion control plan is a major factor in protecting marine equipment and vessels. Local environmental regulations have significantly affected the production, transportation, use, and disposal of coatings. Volatile organic compounds (VOCs), heavy metal pigments, organotins, etc, are some of the concerns. Coatings for marine use fall into the categories of epoxies, urethanes, alkyds, inorganic silicate coatings, vinyls, chlorinated rubber, coal tar, and powder coatings. Selection of coatings for specific use such as hulls, tanks, weather decks etc is discussed
Lanthanides
Authors: Bünzli Jean‐Claude G. 
Published: July 2013

AbstractLanthanide elements (Ln: La‐Lu; 57–71) belong to the rare‐earth series of elements (Sc, Y, and Ln). They present specific chemical, optical, and magnetic properties that are a consequence of their peculiar electronic structure. Although used in small quantities (about 120,000 tons equivalent rare‐earth oxides per year worldwide), they have become essential to almost all aspects of modern life, being the active cores in catalysts for oil cracking, lighting devices, high coercivity magnets used in motorization (electric cars, wind turbines, hard disk drives) or audio applications, lasers and telecommunications, biomedical analyses and imaging, and agriculture. They are classified as strategic materials by the military and several governments. This article describes the resources, mining, processing, commercial aspects, physical and chemical properties, as well as all aspects of applications of these elements and their compounds.
European pliopithecid diets revised in the light of dental microwear inPliopithecus canmatensisandBarberapithecus huerzeleri
Authors: DeMiguel Daniel , Alba David M. , Moyà‐Solà Salvador 
Published: July 2013

ABSTRACTPliopithecinae and Crouzeliinae (Primates: Pliopithecidae) are distinguished dentally by the sharper crests, more compressed cusps, larger foveae, and narrower molars of the latter. Traditionally, such differences were qualitatively related to increased folivory in crouzeliines. This was subsequently disproved by microwear and shearing crest analyses, indicating that all pliopithecids were soft‐fruit eaters, except for the more folivorous crouzeliineBarberapithecus. This seems however at odds with the occlusal morphology of the latter, intermediate between those ofPliopithecusand the more derived crouzeliineAnapithecus. To further assess dietary evolution in this group, we report results of dental microwear for two Iberian pliopithecids:Pliopithecus canmatensis, from several Abocador de Can Mata localities (11.8–11.7 Ma, MN8), andBarberapithecus huerzelerifrom Castell de Barberà (ca. 11.2–10.5 Ma, MN8, or MN9). Contrary to previously published results, our analyses suggest that all pliopithecids, includingBarberapithecus, had a frugivorous diet with a significant sclerocarpic component—apparently more marked in some pliopithecines (such asP. canmatensis) than in the crouzeliineAnapithecus. If our interpretation is correct, it would mean that, within the framework of a frugivorous diet with some hard‐object feeding, crouzeliine dental evolution would have been driven by selection pressures towards increased soft‐fruit consumption instead of folivory. Dental differences between pliopithecids and hominoids with a significant sclerocarpic component (i.e., orangutans) might be related to phylogenetic constraints, different food‐processing methods and/or fracture toughness of hard foods consumed. Although additional research would be required, results suggest that dietary niche partitioning played a significant role in the radiation of European pliopithecids. Am J Phys Anthropol 151:573–582, 2013. © 2013 Wiley Periodicals, Inc.
New craniodental fossils of papionin monkeys from Cooper's D, South Africa
Authors: Folinsbee Kaila E. , Reisz Robert R. 
Published: July 2013

ABSTRACTPapionin monkey fossils are common in the Plio‐Pleistocene aged karst cave deposits northwest of Johannesburg in South Africa. These deposits have yielded important primate and other vertebrate fauna since their discovery in the early part of the 20th century. In this article, we describe new primate cranial and dental specimens from excavations at the site of Cooper's D in the Sterkfontein Valley that date to around 1.5 million years ago. Unlike other localities in southern Africa, most of the new fossils are referred to Theropithecus oswaldi oswaldi, an extinct gramnivorous monkey related to the living gelada. Diagnostic features of T. o. oswaldi crania and teeth include large, thickly enameled molars with tall, columnar cusps, and high molar relief, an upright mandibular ramus, postorbital constriction, and anterior fusion of temporal lines. Also present in the new sample are teeth referred to Papio sp., which show low crowned bunodont molars, and a number of indeterminate papionin teeth and skull fragments. The presence of T. o. oswaldi at Cooper's D extends the list of known localities where the taxon is found, and may indicate the presence of an open, grassland environment in the area during the early Pleistocene. The abundance of theropith fossils at Cooper's suggests that Papio was not consistently the most common papionin in southern Africa over the past three million years. Am J Phys Anthropol 151:613–629, 2013. © 2013 Wiley Periodicals, Inc.
Purification and characterization of enzymes from yeast: An extended undergraduate laboratory sequence for large classes
Authors: Johanson Kelly E. , Watt Terry J. , McIntyre Neil R. , Thompson Marleesa 
Published: July 2013

AbstractProviding a project‐based experience in an undergraduate biochemistry laboratory class can be complex with large class sizes and limited resources. We have designed a 6‐week curriculum during which students purify and characterize the enzymes invertase and phosphatase from bakers yeast. Purification is performed in two stages via ethanol precipitation and anion exchange chromatography, and students perform both direct and coupled enzyme assays. By completion of the experimental series, students are able to identify which enzymes they have purified and have obtained kinetic parameters for one. This experimental series requires minimal instructor preparation time, is cost effective, and works with multiple sections of large groups of students. Students participating in this sequence showed increases in conceptual understanding of biochemical concepts as measured through in‐class assessments and anonymous surveys. © 2013 by The International Union of Biochemistry and Molecular Biology, 41(4):251–261, 2013
Using PCR‐RFLP technology to teach single nucleotide polymorphism for undergraduates
Authors: Zhang Bo , Wang Yan , Xu Xiaofeng , Guan Xingying , Bai Yun 
Published: July 2013

AbstractRecent studies indicated that the aberrant gene expression of peroxiredoxin‐6 (prdx6) was found in various kinds of cancers. Because of its biochemical function and gene expression pattern in cancer cells, the association between genetic polymorphism of Prdx6 and cancer onset is interesting. In this report, we have developed and implemented a serial experiment in molecular biology laboratory course to teach single nucleotide polymorphism (SNP) to undergraduate students majoring in molecular biology or genetics. The flanking sequence of rs4382766 was located in Prdx6 gene, which contained a restriction site of SspI, and was used as a target in this lab course. The students could mimic real research by integrating different techniques, such as database retrieving, genomic DNA isolation, PCR, and restriction enzyme assay. This serial experiment of PCR‐RFLP helps students set up intact idea of molecular biology and understand the relation among individual experiments. Students were found to be more enthusiastic during the laboratory classes than those in the former curriculum. © 2013 by The International Union of Biochemistry and Molecular Biology, 41(4):262–266, 2013
ChemInform Abstract: Novel Intermetallic Yb≈3Pt≈4 Si6‐x (x = 0.3) — A Disordered Variant of the Y3Pt4Ge6‐Type.
Authors: Gribanov Alexander , Rogl Peter , Grytsiv Andriy , Seropegin Yurii , Giester Gerald 
Published: July 2013

AbstractThe title compound is unintentionally obtained by arc melting of the elements in a ratio pertaining to YbPtSi2 with 3 wt.% excess of Yb due to its high volatility.The crystal structure of the novel intermetallic is determined by single crystal XRD (space group P21/m, Z = 2) and found to be a disordered variant of the Y3Pt4Ge6 type characterized by the intergrowth of slabs cut from the ThCr2Si2 and YIrGe2 types of structures.
ChemInform Abstract: Synthesis of a White‐Light‐Emitting ZnSe:Mn Nanocrystal via Thermal Decomposition Reaction of Organometallic Precursors.
Authors: Lee Sang‐Min , Hwang Cheong‐Soo 
Published: July 2013

AbstractThe title nanocrystals are prepared from mixtures of Et2Zn, manganese(II) cyclohexabutylate, and elemental Se dispersed in tri‐n‐octylphosphine (Ar, 300 °C).
ChemInform Abstract: Enhanced Oxide Ion Conductivity in Stabilized Cubic BaInO2.5 by Mn5+ Doping.
Authors: Sun Yuzeng , Yang Chengxu , Shu Ting , Li Guobao , Liao Fuhui , Lin Jianhua 
Published: July 2013

AbstractMn‐doped, room temperature stabilized cubic BaInO2.5 is prepared by solid state reaction of BaCO3, In2O3, and MnCO3 with molar ratios of Ba:In:Mn = 1:(1‐x):x (0.13 ≤ x ≤ 0.33) in Al2O3 crucibles at 1200 °C for 12 h and at 1350 °C for 24 h.
ChemInform Abstract: Synthesis, Crystal Structure and Electrical Properties of A‐Site Cation Ordered BaErMn2O5 and BaErMn2O6.
Authors: Swierczek Konrad , Klimkowicz Alicja , Zheng Kun , Dabrowski Bogdan 
Published: July 2013

AbstractBaErMn2O5 is synthesized from the respective nitrates dissolved in a minimal amount of water using the ammonia salt of EDTA as a complexing agent (Ar flow, 1200 °C, 8 h, <95 wt.% yield).
ChemInform Abstract: Novel Synthesis of Low Carbon‐Coated Li3V2(PO4)3 Cathode Material for Lithium‐Ion Batteries.
Authors: Zhang Lu‐Lu , Duan Song , Peng Gang , Liang Gan , Zou Feng , Huang Yun‐Hui 
Published: July 2013

AbstractLi3V2(PO4)3/C composite is prepared by a novel refluxing‐assisted solid‐state reaction and compared with hydrothermal synthesis.
ChemInform Abstract: Re‐synthesis and Electrochemical Characteristics of LiFePO4 Cathode Materials Recycled from Scrap Electrodes.
Authors: Kim Hyung Sun , Shin Eun Jung 
Published: July 2013

AbstractLiFePO4 active cathode material is recovered from scrap electrodes of lithium secondary batteries by an environmentally friendly thermal treatment method at 500 °C for 30 min under flowing nitrogen.
ChemInform Abstract: A Novel Ag3AsO4 Visible‐Light‐Responsive Photocatalyst: Facile Synthesis and Exceptional Photocatalytic Performance.
Authors: Tang Jianting , Liu Yonghong , Li Haizhu , Tan Zhen , Li Datang 
Published: July 2013

AbstractThe title compound is precipitated at room temperature by slowly combining an aqueous AgNO3 solution with an aqueous solution containing Na2HAsO3, H2O2, and NH4OH.
ChemInform Abstract: Synthesis and Single‐Crystal Structure Determination of the Zinc Nitride Halides Zn2NX (X: Cl, Br, I).
Authors: Liu Xiaohui , Wessel Claudia , Pan Fangfang , Dronskowski Richard 
Published: July 2013

AbstractThe title compounds are synthesized from mixtures of Zn3N2 and ZnX2 (X: Cl, Br, I; argon or vacuum, 550—600 °C, 20 h—3 d).
ChemInform Abstract: Unprecedented Gallium—Nitrogen Anions: Synthesis and Characterization of [(Cl3Ga)3N]3‐ and [(Cl3Ga)2NSnMe3]2‐.
Authors: Wilson Robert J. , Jones Jason R. , Bennett Miriam V. 
Published: July 2013

AbstractCompounds (III) and (V) are characterized by single crystal XRD, diffuse reflectance, and 1H NMR spectroscopy.
ChemInform Abstract: Needle‐Like NaNbO3 Synthesis via Nb6O198‐ Cluster Using Na3NbO4 Precursor by Dissolution—Precipitation Method.
Authors: Yamazoe Seiji , Shibata Kengo , Kato Kazuo , Wada Takahiro 
Published: July 2013

AbstractPolycrystalline needle‐like NaNbO3 is prepared by low temperature dissolution/precipitation of aqueous Na3NbO4 at pH < 13 leading to needle‐like Na7 (H3O)Nb6O19·14H2O precipitates which are further calcined at 500 °C.
ChemInform Abstract: Nona‐Copper(II)‐Containing 18‐Tungsto‐8‐arsenate(III) Exhibits Antitumor Activity.
Authors: Zhou Zhen , Zhang Dongdi , Yang Lu , Ma Pengtao , Si Yanan , Kortz Ulrich , Niu Jingyang , Wang Jingping 
Published: July 2013

AbstractDark‐brown, block‐shaped crystals of Na8 [H4{Cu9As6O15 (H2O)6} (α‐AsW9O33)2]·41H2O are obtained from aqueous mixtures of NaAsO2, Na2WO4, CuCl2, and AcOH (room temperature, 14 d, 11% yield).
ChemInform Abstract: Catalytic Asymmetric Carbon—Carbon Bond Forming Reactions Catalyzed by Tetrahydroisoquinoline (TIQ) N,N′‐Dioxide Ligands.
Authors: Cele Zamani E. D. , Sosibo Sphelele C. , Andersson Pher G. , Kruger Hendrik G. , Maguire Glenn E. M. , Govender Thavendran 
Published: July 2013

AbstractTetrahydroisoquinoline N,N′‐dioxide is successfully applied as a chiral ligand for the Michael addition of unsaturated ketoesters (I) to dione (II) and malonates (IV).
ChemInform Abstract: Highly Efficient Cu(I)‐Catalyzed Oxidation of Alcohols to Ketones and Aldehydes with Diaziridinone.
Authors: Zhu Yingguang , Zhao Baoguo , Shi Yian 
Published: July 2013

Abstract44 examples for oxidation of primary and secondary alcohols to the corresponding aldehydes and ketones are presented.
ChemInform Abstract: Facile Reduction of Nitroarenes into Anilines and Nitroalkanes into Hydroxylamines via the Rapid Activation of Ammonia·Borane Complex by Supported Gold Nanoparticles.
Authors: Vasilikogiannaki Eleni , Gryparis Charis , Kotzabasaki Vasiliki , Lykakis Ioannis N. , Stratakis Manolis 
Published: July 2013

AbstractThe new and facile title reaction tolerates a wide range of different functionalities and affords the corresponding reduction products by using low catalyst loadings.
ChemInform Abstract: Redox‐Neutral Copper(II) Carboxylate Catalyzed α‐Alkynylation of Amines.
Authors: Das Deepankar , Sun Aaron X. , Seidel Daniel 
Published: July 2013

AbstractThe selectivity concerning the three‐component reaction of mainly cyclic secondary amines, aldehydes, and terminal alkynes is optimized with respect to formation of ring‐substituted propargylic amines, where CEH is found to be an optimal catalyst.