bluuebunny/crossref_metadata_2025_split huggingface dataset:
Entrepreneurial capacities as antecedents of business performance in Brazilian firms
Authors: Jiménez Daniel Jiménez , Cegarra‐Navarro Juan Gabriel , Gattermann Perin Marcelo , Sampaio Claudio Hoffmann , Lengler Jorge Bertinetti 
Published: June 2014

AbstractWe investigate the relationship between entrepreneurial capacities and firm performance. More specifically, we investigate the effects of radical innovation and learning orientation on business performance. We test the effects of entrepreneurial orientation on learning orientation and radical innovation. The results suggest that radical product innovation and companies' orientation to learn have a positive effect on organizational performance. Additionally, we find that entrepreneurial orientation positively influences a firm's capability to learn and innovate. Our findings also show a direct effect of learning orientation on radical innovation, which means that companies with a higher proclivity to learn are more likely to create products and processes, representing a major departure from the state of current knowledge. Copyright © 2014 ASAC. Published by John Wiley & Sons, Ltd.
MNE practice transfer as a process of institutional change
Authors: Edwards Gwyneth , Molz Rick 
Published: June 2014

AbstractWe build upon current theory on strategic organizational practice transfer in multinational firms by incorporating the agency of actors and applying an institutional lens to the transfer process. Our theoretical analysis suggests that practice transfer is a process of institutional change that leads not only to practice adoption, adaptation, or nonadoption, but also to reconstruction. We argue that when contradictions exist within and across institutional environments, misaligned interests motivate actors to engage in praxis. As a parent‐subsidiary coalition, these actors reconstruct the practice by transcending the multitude of institutional environments that comprise the institutional system. Our process theory provides insight into how less powerful subsidiary actors engage in praxis to extend knowledge and build new capabilities within the firm. Copyright © 2014 ASAC. Published by John Wiley & Sons, Ltd.
New Ligands for Copper‐Catalyzed CN Coupling Reactions at Gentle Temperature
Authors: Su Jinyue , Qiu Yatao , Jiang Sheng , Zhang Dayong 
Published: June 2014

AbstractPyridin‐2‐ol‐N‐oxide was designed as an efficient ligand for the coupling reaction of aryl iodides, aryl bromides and aryl chlorides, respectively, with primary amines, cyclic secondary amines or N‐containing heterocycles at room or moderate temperature. The catalytic system showed great functional groups tolerance and excellent selective reactivity.
Boron‐Oxygen Bond Cleavage of Pinacolborane and Catecholborane Mediated by a Scandium Phosphinidene Complex
Authors: Wang Wei , Lv Yingdong , Gou Xiaofeng , Leng Xuebing , Chen Yaofeng 
Published: June 2014

AbstractReactions of bis‐scandium bridged phosphinidene complex, [LSc(μ‐PAr)]2 (L=MeC(NDIPP)CHC(Me)(N‐CH2CH2N(iPr)2), DIPP=2,6‐(iPr)2C6H3; Ar=2,6‐Me2C6H3) (1), with pinacolborane, catecholborane, and 9‐borabicyclo[3.3.1]nonane (9‐BBN) are reported. Complex 1 reacts with pinacolborane and catecholborane to give scandium pinacolate (2) and catecholate (3), showing BO bond cleavage. These two scandium complexes contain an unusual [P(Ar)B(H)P(Ar)]2− dianion, which displays a μ‐η2:η2 coordination model. On the other hand, reaction of complex 1 with 9‐BBN affords the BH bond cleavage product, 1,3‐diphospha‐2,4‐diboracyclobutane (4).
Carboxylatopillarene‐Modified Reduced Graphene Oxides with High Water Dispersibility for Fluorescent Dye Sensing
Authors: Zhou Ting , Yu Hao , Liu Mingqiang , Yang Ying‐Wei 
Published: June 2014

AbstractCarboxylated pillar[5]arene (CP5) macrocycles were modified onto the surface of reduced graphene oxide (RGO) via covalent bonds to form new pillarene‐functionalized RGO nanosheets, i.e., RGO‐CP5. The obtained RGO‐CP5 nanosheets capable of molecular recognition exhibited much better water‐dispersibility and enhanced fluorescence‐quenching property as compared with native RGO. This new sensing platform holds great potentials in the sensing and detection of analytes, such as organic dye molecules and pesticides, in aqueous solutions.
The value of the “suspicious for urothelial carcinoma” cytology category: A correlative study of 4 years including 337 patients
Authors: Ton Nu Tuyet Nhung , Kassouf Wassim , Ahmadi‐Kaliji Babak , Charbonneau Michele , Auger Manon , Brimo Fadi 
Published: June 2014

BACKGROUNDThe terminology used in reporting urine cytology lacks uniformity and the significance of the “atypical” and “suspicious” categories is still not well established. This results in variable clinical follow‐up and management of those cases. The authors sought to investigate the prognostic value of a diagnosis of “suspicious for high‐grade urothelial carcinoma” (HGUCA).METHODSAll cases with a “suspicious” or “positive” cytological diagnosis spanning 4 years were included and correlated with the subsequent biopsies obtained within 6 months of urine collection.RESULTSA total of 447 correlative events (57% positive and 43% suspicious) corresponding to 773 cytology specimens and 337 patients were included. The morphology of the “suspicious” cells was similar to what has recently been reported in the literature as “atypical urothelial cells, cannot exclude HGUCA.” A “suspicious” diagnosis was more often rendered than a “positive” one in voided specimens (80% vs 65%, respectively). The mean interval between cytology and biopsy was 31 days. On follow‐up, 92% of “suspicious” diagnoses (176 of 191 diagnoses) and 90% of “positive” diagnoses (230 of 256 diagnoses) were found to have a biopsy with a diagnosis of carcinoma (low grade or high grade). A diagnosis of HGUCA followed a “suspicious” and a “positive” diagnosis in 79% and 86% of cases, respectively.CONCLUSIONSA “suspicious” diagnosis as defined in the current study warrants close investigations and repeat biopsy to rule out HGUCA. In addition, the findings of the current study raise the question of the need for quantitative criteria for diagnosing HGUCA on cytology. Cancer (Cancer Cytopathol) 2014;122:796–803. © 2014 American Cancer Society.
Cis‐Glyco‐Fused Benzopyran Derivatives as Hit Compounds for the Development of Therapeutic and Diagnostic Tools against Neurodegenerative Diseases
Authors: Merlo Silvia , Sironi Erika , Colombo Laura , Cardona Francisco , Martorana Alessandra M. , Salmona Mario , La Ferla Barbara , Airoldi Cristina 
Published: June 2014

AbstractOligomeric and fibrillar aggregates generated by amyloid‐β (Aβ) and prion protein (PrP) peptides are amongst the principal components of amyloid plaques found post mortem in patients suffering from Alzheimer’s disease and mammalian prion diseases. Hence these amyloid peptides represent major molecular targets to develop potential drugs and diagnostic tools for the above‐mentioned neurodegenerative diseases. Recently, a small library of cis‐glyco‐fused benzopyran compounds has been synthesized by us, and their ability to recognize and bind Aβ peptide oligomers and stain Aβ deposits was demonstrated. By exploiting the structural similarity between Aβ and PrP aggregates, herein the interaction of these benzopyran molecules with PrP oligomers and their inhibition of the PrP aggregation process that leads to amyloid fibril formation are investigated. Finally, the in vitro staining of PrP fibrils is achieved with a fluorescently labeled cis‐glyco‐fused benzopyran derivative able to cross a model of the blood–brain barrier.
Porous Cube‐Aggregated Co3O4 Microsphere‐Supported Gold Nanoparticles for Oxidation of Carbon Monoxide and Toluene
Authors: Yang Huanggen , Dai Hongxing , Deng Jiguang , Xie Shaohua , Han Wen , Tan Wei , Jiang Yang , Au Chak Tong 
Published: June 2014

AbstractPorous cube‐aggregated monodisperse Co3O4 microspheres and their supported gold (xAu/Co3O4 microsphere, x=1.6–7.4 wt %) nanoparticles (NPs) were fabricated using the glycerol‐assisted solvothermal and polyvinyl alcohol‐protected reduction methods. Physicochemical properties of the materials were characterized by means of numerous analytical techniques, and their catalytic activities were evaluated for the oxidation of toluene and CO. It is shown that the cubic Co3O4 microspheres were composed of aggregated cubes with a porous structure. The gold NPs with a size of 3.2–3.9 nm were uniformly deposited on the surface of Co3O4 microspheres. Among the Co3O4 microsphere and xAu/Co3O4 microsphere samples, the 7.4Au/Co3O4 microspheres performed the best, giving T90 % values (the temperature required for achieving a CO or toluene conversion of 90 % at a weight hourly space velocity of 20 000 mL g−1 h−1) of −8 and 250 °C for CO and toluene oxidation, respectively. In the case of 3.0 vol % water vapor introduction, a positive effect on CO oxidation and a small negative effect on toluene oxidation were observed over the 7.4Au/Co3O4 microsphere sample. The apparent activation energies obtained over the xAu/Co3O4 microsphere samples were in the ranges of 40.7–53.6 kJ mol−1 for toluene oxidation and 21.6–34.6 kJ mol−1 for CO oxidation. It is concluded that the higher oxygen adspecies concentration, better low‐temperature reducibility, and stronger interaction between gold NPs and Co3O4 as well as the porous microspherical structure were responsible for the excellent catalytic performance of 7.4Au/Co3O4 microsphere.
Modification and Resonance Tuning of Optical Microcavities by Atomic Layer Deposition
Authors: Wang Jiao , Huang Gaoshan , Mei Yongfeng 
Published: June 2014

AbstractRecently, enormous interest has been focused on the nanofabrication of optical micro‐ and nanocavities for applications in lab‐on‐a‐chip and quantum optics. At the same time, the atomic layer deposition (ALD) process presents several advantages for the fabrication and modification of micro‐ and nanostructures because of its atomic level thickness fine‐tuning and perfect coating conformability in three‐dimensional (3D) structures. Hence, ALD technology has been directed into the field of optical microcavities for the tracking and tuning of their properties. In this short review, we will summarize recent progress in the application of ALD on optical microcavities. Firstly, we will briefly introduce ALD technology and emphasize its distinctive features when applied to optical microcavities. Then, various microcavities such as photonic crystals, opals, and tubular microcavities will be illustrated to demonstrate their development with the assistance of ALD technology. Such an influential manufacturing tool for optical devices could inspire numerous interesting applications, as concluded in the final part.
A possible relation between new neuronal recruitment and migratory behavior in Acrocephalus warblers
Authors: Barkan Shay , Yom‐Tov Yoram , Barnea Anat 
Published: June 2014

ABSTRACTEvidence suggests a possible correlation between learning abilities of adults and new neuronal recruitment into their brains. The hypothesis is that this brain plasticity enables animals to adapt to environmental changes. We examined whether there are differences in neuronal recruitment between resident and migrant birds. We predicted that migrants, which are more exposed to spatial changes than residents, will recruit more new neurons. To test this, we compared neuronal recruitment in two closely related bird species ‐ the migrant reed warbler (Acrocephalus scirpaceus), and the resident Clamorous warbler (A. Stentoreus) ‐ during spring, summer, and autumn. Wild birds were caught, treated with BrdU and sacrificed five weeks later. New neurons were recorded in the Hippocampus and Nidopallium caudolateral. The results support our hypothesis, as more new neurons were found in the migrant species, in both brain regions and all seasons. We suggest that this phenomenon enables enhanced navigational abilities, which are required for the migratory lifestyle. However, in contrast to our hypothesis, in spring we found less new neurons in adults of both species, as compared to other seasons. We suggest that in spring, when birds settle in breeding territories, they require less spatial skills, and this might enable to reduce the cost of neuronal recruitment, as reflected by less new neurons in their brains. We also found age differences, with overall higher neuronal recruitment in juveniles. Finally, we advocate the importance of studying wild populations, for a better understanding of the adaptive significance of neuronal replacement in the vertebrate brain. © 2014 Wiley Periodicals, Inc. Develop Neurobiol 74: 1194–1209, 2014
Vertebrate neurogenic placode development: Historical highlights that have shaped our current understanding
Authors: Stark Michael R. 
Published: June 2014

AbstractWith the flood of published research encountered today, it is important to occasionally reflect upon how we arrived at our current understanding in a particular scientific discipline, thereby positioning new discoveries into proper context with long‐established models. This historical review highlights some of the important scientific contributions in the field of neurogenic placode development. By viewing cumulatively the rich historical data, we can more fully appreciate and apply what has been accomplished. Early descriptive work in fish and experimental approaches in amphibians and chick yielded important conceptual models of placode induction and cellular differentiation. Current efforts to discover genes and their molecular functions continue to expand our understanding of the placodes. Carefully considering the body of work may improve current models and help focus modern experimental design. Developmental Dynamics 243:1167–1175, 2014. © 2014 Wiley Periodicals, Inc.
A comparison of women with child‐adolescent versus adult onset binge eating: Results from the National Women's Study
Authors: Brewerton Timothy D. , Rance Samantha J. , Dansky Bonnie S. , O'Neil Patrick M. , Kilpatrick Dean G. 
Published: June 2014

ABSTRACTObjectiveStudies of age of first binge have been conducted in clinical samples of patients with bulimia nervosa (BN) and binge eating disorder (BED), but few studies have examined age of first binge using nationally representative samples.MethodWe examined age of first binge and its clinical correlates using data generated from the National Women's Study (n = 3,006). Participants who endorsed ever binge eating (n = 707) were divided into two groups: (1) child‐adolescent onset (CO)—age of first binge <18 years, and (2) adult onset (AO)—age of first binge ≥18 years. We hypothesized that CO binge eating would be associated with greater (1) likelihood of developing BN/BED, (2) severity of BN/BED, (3) history of trauma and PTSD, and (4) history of psychiatric comorbidity, such as major depression and substance use.ResultsOf those who ever endorsed binge eating, 212 reported CO (30%) and 495 (70%) reported AO. Although AO binge eating was more common, CO binge eating was associated with higher rates of lifetime BN, greater severity of bulimic symptoms, earlier age of first dieting; earlier age at highest weight, greater likelihood of ED treatment, and higher rates of molestation, physical assault, any direct victimization, lifetime PTSD, and substance abuse.ConclusionsAO binge eating is more than twice as common as CO binge eating in women, but CO binge eating is associated with higher rates of lifetime BN, greater severity of BN, and higher rates of victimization, PTSD, and substance abuse. © 2014 Wiley Periodicals, Inc. (Int J Eat Disord 2014; 47:836–843)
Species‐level view of population structure and gene flow for a critically endangered primate (Varecia variegata)
Authors: Baden Andrea L. , Holmes Sheila M. , Johnson Steig E. , Engberg Shannon E. , Louis Edward E. , Bradley Brenda J. 
Published: June 2014

AbstractLemurs are among the world's most threatened mammals. The critically endangered black‐and‐white ruffed lemur (Varecia variegata), in particular, has recently experienced rapid population declines due to habitat loss, ecological sensitivities to habitat degradation, and extensive human hunting pressure. Despite this, a recent study indicates that ruffed lemurs retain among the highest levels of genetic diversity for primates. Identifying how this diversity is apportioned and whether gene flow is maintained among remnant populations will help to diagnose and target conservation priorities. We sampled 209 individuals from 19 sites throughout the remaining V. variegata range. We used 10 polymorphic microsatellite loci and ~550 bp of mtDNA sequence data to evaluate genetic structure and population dynamics, including dispersal patterns and recent population declines. Bayesian cluster analyses identified two distinct genetic clusters, which optimally partitioned data into populations occurring on either side of the Mangoro River. Localities north of the Mangoro were characterized by greater genetic diversity, greater gene flow (lower genetic differentiation) and higher mtDNA haplotype and nucleotide diversity than those in the south. Despite this, genetic differentiation across all sites was high, as indicated by high average FST (0.247) and ΦST (0.544), and followed a pattern of isolation‐by‐distance. We use these results to suggest future conservation strategies that include an effort to maintain genetic diversity in the north and restore connectivity in the south. We also note the discordance between patterns of genetic differentiation and current subspecies taxonomy, and encourage a re‐evaluation of conservation management units moving forward.
Zn2+‐Responsive Bimodal Magnetic Resonance Imaging and Fluorescence Imaging Agents and Their Interaction with Human Serum Albumin
Authors: Xu Ying‐Qi , Luo Jian , Chen Zhong‐Ning 
Published: June 2014

AbstractThe gadolinium(III) complexes GdL1 and GdL2 were designed as Zn2+‐responsive bimodal magnetic resonance imaging (MRI) and fluorescence imaging probes. Upon binding to Zn2+ ions, GdL1 exhibits a bidentate or tridentate mode to form heterodinuclear GdL1Zn or heterotrinuclear (GdL1)2Zn, whereas GdL2 binds to the Zn2+ ion only in a bidentate mode to form (GdL2)2Zn. The gadolinium(III) complexes derived from both H3L1 and H3L2 exhibit remarkable interactions with human serum albumin (HSA) at both site I and site II, which result in significant enhancements of the relaxivity and remarkable improvements of T1‐weighted imaging contrast. In the presence of HSA, both the relaxivity (r1) and fluorescence exhibit 300 % enhancement with a clear blueshift of the fluorescence for GdL1Zn, which is ascribed to direct binding to HSA through the formation of a Zn–HSA coordination bond. In contrast, the presence of HSA induces smaller relaxivity increases for GdL1 (155 %), (GdL1)2Zn (183 %), GdL2 (192 %), and (GdL2)2Zn (181 %); these increases are ascribed to weaker hydrophobic interactions or stereospecificity with HSA. The contrast of T1‐weighted phantom MR images of these gadolinium(III) complexes in human serum (HS) is much improved relative to that in 4‐(2‐hydroxyethyl)‐1‐piperazineethanesulfonic acid (HEPES) buffer solutions.
Copper(II)‐Mediated Homocoupling of Thioamides for the Synthesis of 1,2,4‐Thiadiazoles
Authors: Sun Yadong , Wu Wanqing , Jiang Huanfeng 
Published: June 2014

AbstractA copper(II)‐mediated highly selective oxidative cyclization reaction of thioamides to provide 3,5‐disubstituted 1,2,4‐thiadiazoles was developed. The copper species plays a key role in this transformation and different functional groups are tolerated under the optimal reaction conditions.
Conjugate Addition of Organomagnesium Cuprates to Guvacine Derivatives
Authors: Hellenbrand Tim , Wanner Klaus T. 
Published: June 2014

AbstractThe synthesis of 4‐substituted piperidine‐3‐carboxylates was achieved by conjugate addition of organomagnesium cuprates to N‐methyl and N‐tert‐butoxycarbonyl guvacine derivatives. Good to excellent yields were obtained with primary Grignard reagents containing alkyl, alkenyl, alkynyl, or masked aldehyde groups in a copper(I)‐trimethylsilylacetylide‐catalysed and chlorotrimethylsilane (TMSCl) mediated procedure.
Palladium‐Catalyzed Decarboxylative C–H Bond Arylation of Furans
Authors: Pei Kai , Jie Xiaoming , Zhao Huaiqing , Su Weiping 
Published: June 2014

AbstractA Pd/PCy3/Ag2CO3 (Cy = cyclohexyl) catalytic system was found to promote decarboxylative arylation through the combination of decarboxylation and C–H bond functionalization. This protocol features a good substrate scope of aromatic carboxylic acids as well as a broad range of functional groups and provides the products in high yields.
Distribution, characterization, and exposure of MC252 oil in the supratidal beach environment
Authors: Lemelle Kendall R. , Elango Vijaikrishnah , Pardue John H. 
Published: June 2014

Abstract

The distribution and characteristics of MC252 oil:sand aggregates, termed surface residue balls (SRBs), were measured on the supratidal beach environment of oil-impacted Fourchon Beach in Louisiana (USA). Probability distributions of 4 variables, surface coverage (%), size of SRBs (mm2 of projected area), mass of SRBs per m2 (g/m2), and concentrations of polycyclic aromatic hydrocarbons (PAHs) and n-alkanes in the SRBs (mg of crude oil component per kg of SRB) were determined using parametric and nonparametric statistical techniques. Surface coverage of SRBs, an operational remedial standard for the beach surface, was a gamma-distributed variable ranging from 0.01% to 8.1%. The SRB sizes had a mean of 90.7 mm2 but fit no probability distribution, and a nonparametric ranking was used to describe the size distributions. Concentrations of total PAHs ranged from 2.5 mg/kg to 126 mg/kg of SRB. Individual PAH concentration distributions, consisting primarily of alkylated phenanthrenes, dibenzothiophenes, and chrysenes, did not consistently fit a parametric distribution. Surface coverage was correlated with an oil mass per unit area but with a substantial error at lower coverage (i.e., &lt;2%). These data provide probabilistic risk assessors with the ability to specify uncertainty in PAH concentration, exposure frequency, and ingestion rate, based on SRB characteristics for the dominant oil form on beaches along the US Gulf Coast. Environ Toxicol Chem 2014;33:1544–1551. © 2014 SETAC