bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of Perfluorinated End Groups on the SFRD of [Pt(cod)Me(CnF2n+1)] onto Porous Al2O3 in CO2 under Reductive Conditions
Authors: Aggarwal Vikas , Reichenbach Linus F. , Enders Mirja , Muller Thierry , Wolff Simone , Crone Marlene , Türk Michael , Bräse Stefan 
Published: August 2013

AbstractThe optimized synthesis of a range of cyclooctadiene‐stabilized Pt complexes that contained different perfluoro‐alkane chains, [Pt(cod)Me(CnF2n+1)], is presented. These metal–organic compounds were employed in the so‐called supercritical fluid reactive deposition (SFRD) in CO2 under reductive conditions to generate metallic nanoparticles on aluminum oxide as a porous support. Thus, Al2O3‐supported Pt nanoparticles with a narrow particle‐size distribution were obtained. At a reduction pressure of 15.5 MPa and a temperature of 353 K, particle diameters of d50=2.3–2.8 nm were generated. Decreasing the pressure during the reduction reaction led to slightly larger particles whilst decreasing the amount of organometallic precursor in CO2 yielded a decrease in the particle size from x50=3.2 nm to 2.6 nm and a particle‐size distribution of 2.2 nm. Furthermore, substitution of the CH3 end group by the CnF2n+1 end groups led to a significant drop in Pt loading of about 50 %. Within the series of perfluorinated end groups that were considered, the Pt complex that contained a branched perfluoro‐isopropyl group showed the most‐interesting results when compared to the control precursor, [Pt(cod)Me2] (1).
Ecohydraulics: linkages between hydraulics, morphodynamics and ecological processes in rivers
Authors: Blanckaert Koen , Garcia Xavier‐François , Steiger Johannes , Uijttewaal Wim 
Published: August 2013

ABSTRACTThe articles in this issue are a selection of the 15 main presentations made at the EUROMECH Colloquium 523 ‘Ecohydraulics: linkages between hydraulics, morphodynamics and ecological processes in rivers’ that was organized in Clermont‐Ferrand, France, from 15 to 17 June 2011. The Colloquium was attended by 51 participants from 15 countries. Copyright © 2013 John Wiley & Sons, Ltd.
Triggering the Sign of Magnetic Exchange Coupling in a Dinuclear Copper(II) Complex by Solvent Molecule Coordination
Authors: Shcherbakov Igor N. , Levchenkov Sergey I. , Tupolova Yulia P. , Popov Leonid D. , Vlasenko Valery G. , Zubavichus Yan V. , Lukov Vladimir V. , Kogan Victor A. 
Published: August 2013

AbstractThe magnetic properties of a dinuclear copper(II) complex of the Schiff base ligand bis(N,N′‐3‐formylsalicylidene)‐1,3‐diaminopropan‐2‐ol (H3L) with an exogenous acetate bridging group, [Cu2L(CH3COO)] (2), and the product of its crystallization from dimethyl sulfoxide (DMSO) solution, [Cu2L(CH3COO)(DMSO)] (3), are studied experimentally and theoretically. The coordination of a DMSO molecule triggers exchange coupling from antiferromagnetic in 2 (2J = –94.8 cm–1) to ferromagnetic in 3 (2J = +121 cm–1). A combination of experimental data [XRD, X‐ray absorption spectroscopy (XAS)] and the results of DFT calculations with a broken‐symmetry approach show that the different magnetic behaviour of 2 and 3 is explained by a different conformation of the dinuclear unit, which is “symmetric” in 2 and roof‐shaped in 3. The role of the DMSO molecule in exchange‐coupling sign inversion is limited to the stabilisation of the roof‐shaped conformation of the complex.
Total Syntheses of Isomeric Spiroacetal Marine Natural Products Attenols A and B
Authors: Kumar Vemula Praveen , Kavitha Nerella , Chandrasekhar Srivari 
Published: August 2013

AbstractThe convergent total synthesis of two marine natural products, attenols A and B is achieved with excellent stereocontrol. The synthetic route is based on an enantio‐ and regioselective Sharpless dihydroxylation, palladium(0)‐catalyzed reduction to form δ‐hydroxy‐1‐enoates, stereoselective mCPBA‐mediated epoxidation, and Julia–Kocienski olefination.
A Chiroptical Probe for Sensing Metal Ions in Water
Authors: Caricato Marco , Leza Nerea Jordana , Roy Kinkini , Dondi Daniele , Gattuso Giuseppe , Shimizu Linda S. , Vander Griend Douglas A. , Pasini Dario 
Published: August 2013

AbstractWe describe a novel Binol‐containing macrocycle that behaves as a chiroptical probe for the detection of biologically relevant ions (Cu2+, Zn2+) under physiological conditions. The macrocycle synthesis is carried out with Binol‐based synthons suitably derivatized in the 2,2′‐ and 3,3′‐positions, by means of a room temperature esterification reaction as the cyclization procedure, followed by late‐stage unmasking of the four carboxylic acid functionalities embedded within the macrocyclic framework. The recognition events, signaled using both UV and CD spectroscopy, are triggered by macrocyclic rearrangement induced by binding of the cations through coulombic interactions with the carboxylate anions in water at pH 7. The ample CD response ensures high chiroptical sensitivity and demonstrates the feasibility of chiroptical detection of biologically relevant cations by using a non‐nitrogen‐based ligand under aqueous conditions.
Negative attributes are gendered too: Conceptualizing and measuring positive and negative facets of sex‐role identity
Authors: Berger Anja , Krahé Barbara 
Published: August 2013

AbstractMeasures of gender identity have almost exclusively relied on positive aspects of masculinity and femininity, although conceptually the self‐concept is not limited to positive attributes. A theoretical argument is made for considering negative attributes of gender identity, followed by five studies developing the Positive–Negative Sex‐Role Inventory (PN‐SRI) as a new measure of gender identity. Study 1 demonstrated that many of the attributes of a German version of the Bem Sex‐Role Inventory are no longer considered to differ in desirability for men and women. For the PN‐SRI, Study 2 elicited attributes characterizing men and women in today's society, for which ratings of typicality and desirability as well as self‐ratings by men and women were obtained in Study 3. Study 4 examined the reliability and factorial structure of the four subscales of positive and negative masculinity and femininity and demonstrated the construct and discriminant validity of the PN‐SRI by showing that the negative masculinity and femininity scales were unique predictors of select validation constructs. Study 5 showed that the new instrument explained variance in the validation constructs beyond earlier measures of gender identity.Key message: Even in the construction of negative aspects of gender identity, individuals prefer gender‐congruent attributes. Negative masculinity and femininity make a unique contribution to understanding gender‐related differences in psychological outcome variables. Copyright © 2013 John Wiley & Sons, Ltd.
Population Pharmacokinetic Analysis of Linezolid in Low Body Weight Patients with Renal Dysfunction
Authors: Tsuji Yasuhiro , Yukawa Eiji , Hiraki Yoichi , Matsumoto Kana , Mizoguchi Akiko , Morita Kunihiko , Kamimura Hidetoshi , Karube Yoshiharu , To Hideto 
Published: August 2013

AbstractLinezolid has antibacterial activity against aerobic Gram‐positive cocci, including methicillin‐resistant Staphylococcus aureus (MRSA). Adjustment of the dose of linezolid has been proposed to be unnecessary in patients with reduced renal function. However, platelet counts and hemoglobin levels were shown to be significantly lower in such patients than in patients with normal renal function. The population pharmacokinetic (PPK) of linezolid was investigated in MRSA infected patients with renal dysfunction. Linezolid concentrations in serum were measured by high‐performance liquid chromatography. PPK analysis was performed in the nonlinear mixed effects model (NONMEM) computer program. In the final PPK model, total body weight (TBW), estimated glomerular filtration rate (eGFR), hemoglobin (HB), and alanine amino transferase (ALT) were influential covariates on total body clearance (CL), and the volume of distribution (Vd) was affected by TBW, which was expressed as CL (L/h) = 0.00327 × TBW × eGFR0.428 × HB0.502 × 0.283 (ALT ≥ 100 IU/L) and CL (L/h) = 0.00327 × TBW × eGFR0.428 × HB0.502 (ALT < 100 IU/L), Vd (L) = 1.310 × TBW. The PPK parameters of linezolid obtained here are useful for the optimal use of linezolid with similar patient population characteristics.
Economic benefits of publicly accessible land for ruffed grouse hunters
Authors: Knoche Scott , Lupi Frank 
Published: August 2013

AbstractAlthough numerous studies have focused on estimating economic benefits associated with big game hunting experiences, economic valuation efforts examining small game hunting have largely been neglected. This is especially surprising with respect to hunting grouse, a family of widely distributed upland game birds targeted by about 800,000 hunters in 2011. Furthermore, despite efforts by federal and state agencies directed at improving and increasing public land for recreational hunting purposes, a dearth of studies exist regarding the economic benefits of public land to hunters. Using the travel cost method and data from a 2008 survey of Michigan ruffed grouse hunters, we examine relationships between hunting site choice and publicly accessible hunting land. We find that federally owned land, state‐owned land, and publicly accessible, privately owned Commercial Forest Act (CFA) land are positive predictors of hunter site selection (P < 0.001). Given this relationship, we then estimated the economic benefits of different types of publicly accessible land to ruffed grouse hunters by examining the willingness of hunters to incur increasing travel costs to hunt in counties with greater amounts of publicly accessible land. We estimated the economic benefits of publicly accessible hunting land for ruffed grouse hunters in Michigan to be over $20 million in 2008, with economic benefits of CFA land comprising about $6.9 million of this annual total. Estimating the economic benefits of publicly accessible hunting land for outdoor recreationists provides a useful metric for policy makers to use in evaluating how changes in the amount and nature of publicly accessible hunting land affects these individuals. © 2013 The Wildlife Society.
Value of electroneurography as a prognostic indicator for recovery in acute severe inflammatory facial paralysis: A prospective study of bell's palsy and ramsay hunt syndrome
Authors: Byun Hayoung , Cho Yang‐Sun , Jang Jeon Yeob , Chung Kyu Whan , Hwang Soojin , Chung Won‐Ho , Hong Sung Hwa 
Published: August 2013

Objectives/HypothesisTo evaluate the prognostic and predictive value of electroneuronography (ENoG) in acute severe inflammatory facial paralysis, including Bell's palsy and Ramsay Hunt syndrome (RHS).Study DesignProspective observational study.MethodsPatients with acute severe facial paralysis of House‐Brackmann (H‐B) grade IV or worse and diagnosed with Bell's palsy or RHS were enrolled from August 2007 to July 2011. After treatment with oral corticosteroid, antiviral agent, and protective eye care, patients were followed up until recovery or 12 months from onset.ResultsSixty‐six patients with Bell's palsy and 22 with RHS were included. Multiple logistic regression analysis showed significant effect of ENoG value on recovery in both Bell's palsy and RHS. Values of ENoG were significantly worse in RHS than Bell's palsy. Chance of early recovery within 6 weeks after correction of ENoG effect was still significantly worse in RHS. Logistic regression analysis showed 90% chance of recovery within 6 months, expected with ENoG values of 69.2% degeneration (Bell's palsy) and 59.3% (RHS). The receiver operating characteristics (ROC) curves showed ENoG values of 82.5% (Bell's palsy) and 78.0% (RHS) as a critical cutoff value of nonrecovery until 1 year, with the best sensitivity and specificity.ConclusionsA higher chance of recovery was expected with better ENoG in Bell's palsy and RHS. Based on our data, nonrecovery is predicted in patients with ENoG value greater than 82.5% in Bell's palsy, and 78% in RHS.Level of Evidence4. Laryngoscope, 123:2526–2532, 2013
Can pillar suturing promote efficacy of adenotonsillectomy for pediatric osas? A prospective randomized controlled trial
Authors: Chiu Po‐Han , Ramar Kannan , Chen Kuang‐Chao , Tsai Yih‐Jeng , Lin Chia‐Mo , Chiang Yuh‐Chyun , Lu Chia‐Ying , Chiang Rayleigh Ping‐Ying 
Published: August 2013

Objectives/HypothesisPediatric obstructive sleep apnea syndrome (OSAS) is a common disorder with serious clinical implications if left untreated. The recommended initial treatment for pediatric patients with obstructive sleep apnea syndrome (OSAS) is adenotonsillectomy. However, recent reports have shown variable surgical results with adenotonsillectomy in the treatment of pediatric OSAS.Study DesignProspective, controlled study.MethodsFrom April 2007 to August 2010, 24 participants were assigned alternatively to either adenotonsillectomy with pillar suturing (intervention group) or adenotonsillectomy alone (control group).ResultThe average improvement in apnea hypopnea index (AHI) was 42.6% in the control group and 79.9% in the intervention group (P=0.037). The success rate was 50% in the control group and 91.6% in the intervention group (P=0.034). Six patients (50%) in the intervention group achieved complete resolution of pediatric OSAS, as defined by an AHI <1/hour, compared to 2 patients (16.7%) in the control group (P=0.097).ConclusionAdenotonsillectomy with pillar suturing showed significant improvement in treating pediatric patients with OSAS compared to adenotonsillectomy alone. The procedure is simple and safe.Level of Evidence4. Laryngoscope, 123:2574–2578, 2013
Evaluation of intraoperative cone beam computed tomography and optical drill tracking in temporal bone surgery
Authors: Erovic Boban M. , Daly Michael J. , Chan Harley H. L. , James Adrian L. , Papsin Blake C. , Pothier David D. , Dixon Ben , Irish Jonathan C. 
Published: August 2013

Objectives/HypothesisA prototype system for intraoperative cone beam computed tomography (CBCT) imaging has been developed and augmented with real time optical tracking of a surgical drill. We hypothesize that this system provides sufficient accuracy for guidance of temporal bone surgery.Study DesignBasic research.MethodsMeasurements of drill localization accuracy using CBCT imaging were obtained with a custom three‐dimensional calibration object. Integrated CBCT imaging and drill tracking were prospectively evaluated on 12 cadaver temporal bones. Six inexperienced and six experienced surgeons conducted four surgical tasks: cortical mastoidectomy, posterior tympanotomy, cochleostomy, and a translabyrinthine approach to the internal auditory canal. Questionnaires provided expert feedback on tracking accuracy and system usability.ResultsTarget registration error measurements of drill tracking accuracy and precision yielded a mean of 0.76 mm, a maximum of 1.30 mm, and a standard deviation of 0.21 mm. Anatomical landmark identification tasks (e.g., facial nerve, incus, semicircular canals, cochlea) provided additional validation of system accuracy. The usability and utility of the guidance system were positively rated by both groups of surgeons, with further modifications underway to improve tracking line of sight and registration workflow. Experienced but in particular inexperienced surgeons indicated significant benefits in cases involving extensive disease, abnormal anatomy, and loss of anatomical landmarks.ConclusionsThe integration of intraoperative CBCT imaging with optical tracking provides sufficient accuracy to localize anatomical structures within the temporal bone using an otological drill. Future studies will explore the role of this technology in complex oncological resections, in surgery for congenital anomalies, and as a tool for teaching.Level of Evidence4. Laryngoscope, 123:2823–2828, 2013
Does desloratadine alter the serum levels of montelukast when administered in a fixed‐dose combination?
Authors: Cingi Cemal , Toros Sema Zer , Ince Iskender , Ertugay Cigdem Kalaycik , Gurbuz M. Kezban , Cakli Hamdi , Erdogmus Nagehan , Karasulu Ercument , Kaya Ercan 
Published: August 2013

Objectives/HypothesisThe aim of this study was to investigate the serum levels of montelukast when administered alone or in combination with desloratadine.Study DesignA prospective crossover study.MethodsTwenty‐three healthy volunteers were investigated in two sessions. Volunteers were given 10 mg of montelukast orally with 250 mL water in the first session. The same subjects were given 10 mg of montelukast in fixed combination with 5 mg desloratadine 10 days after first session. Blood samples were collected 2, 3, and 4 hours after drug administration, and kept at −80°C after both applications. Plasma samples were analyzed for montelukast concentration.ResultsMean concentration values of both groups were not statistically different (P > .05), but the differences were statistically significant according to time (P < .05). Statistically significant difference was not found between the groups according to the area under curve on the basis of both marginal and cumulative values for all different time intervals (P > .05).ConclusionsThe absorption rate of montelukast was not altered when administered with desloratadine. This study suggested that desloratadine does not influence the bioavailability of montelukast, and their combination therapy can be used safely.Level of Evidence2b Laryngoscope, 123:2610–2614, 2013
Influence of Chemical Structure on the Refractive Index of Imide‐Type Polymers
Authors: Butnaru Irina , Bruma Maria , Kopnick Thomas , Stumpe Joachim 
Published: August 2013

The influence of different substituents on the optical properties of poly(amide imide)s and polyimides is systematically investigated. All of the polymers exhibit good solubility and film‐forming ability, high thermal stability, and glass transition temperatures of 162–209 °C for poly(amide imide)s and of 209–274 °C for polyimides. The optical transmittance of the films at 450 nm is above 80% for all the studied polyimides and poly(amide imide)s containing benzonitrile units linked in the 2,6‐position. The values of refractive index for poly(amide imide)s are in the range of 1.623–1.748 and for polyimides in the domain of 1.672–1.768.
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Isotopic Ecology and Human Diets in the Forest–Steppe Ecotone, Aisén Region, Central‐Western Patagonia, Chile
Authors: MÉndez C. , Barberena R. , Reyes O. , Nuevo Delaunay A. 
Published: August 2013

ABSTRACTThis work aims to build a comprehensive isotopic ecology with the ultimate purpose of assessing long‐term human diet decision‐making by means of stable isotope analysis. We present a set of δ13Ccollagenand δ15Ncollagenisotopic values on the main faunal resources from the forest and steppe areas of the Aisén region (Central‐Western Patagonia, Chile), in order to characterise their isotopic ranges and assess their consumption by past hunter–gatherer populations. Two sets of bioarchaeological remains are used for this comparison; a 10 200–9700 cal yearbpassemblage from Baño Nuevo cave and a 1600–300 cal yearbpassemblage gathered at different locations throughout Aisén. Isotopic signals from both assemblages indicate diets based on the consumption of protein provided by terrestrial mammals from steppe environments and no long‐term signature of forest‐resource consumption. On the other hand, the earlier group shows values that may indicate a wider dietary breadth, although this observation is preliminary. These results further suggest that the use of forests and the resources they provided, although visible through the zooarchaeological record (i.e. taxa represented at sites), must have been discontinuous and, perhaps, marginal in comparison with steppe regions. Copyright © 2013 John Wiley & Sons, Ltd.
A meta‐analysis of lesser prairie‐chicken nesting and brood‐rearing habitats: Implications for habitat management
Authors: Hagen Christian A. , Grisham Blake A. , Boal Clint W. , Haukos David A. 
Published: August 2013

ABSTRACTThe distribution and range of lesser prairie‐chicken (Tympanuchus pallidicinctus) has been reduced by >90% since European settlement of the Great Plains of North America. Currently, lesser prairie‐chickens occupy 3 general vegetation communities: sand sagebrush (Artemisia filifolia), sand shinnery oak (Quercus havardii), and mixed‐grass prairies juxtaposed with Conservation Reserve Program grasslands. As a candidate for protection under the Endangered Species Act, there is a need for a synthesis that characterizes habitat structure rangewide. Thus, we conducted a meta‐analysis of vegetation characteristics at nest sites and brood habitats to determine whether there was an overall effect (Hedges' d) of habitat selection and to estimate average (95% CI) habitat characteristics at use sites. We estimated effect sizes (di) from the difference between use (nests and brood sites) and random sampling sites for each study (n = 14), and derived an overall effect size (d++). There was a general effect for habitat selection as evidenced by low levels of variation in effect sizes across studies and regions. There was a small to medium effect (d++ = 0.20–0.82) of selection for greater vertical structure (visual obstruction) by nesting females in both vegetation communities, and selection against bare ground (d++ = 0.20–0.58). Females with broods exhibited less selectivity for habitat components except for vertical structure. The variation of d++ was greater during nesting than brooding periods, signifying a seasonal shift in habitat use, and perhaps a greater range of tolerance for brood‐rearing habitat. The overall estimates of vegetation cover were consistent with those provided in management guidelines for the species. Published 2013. This article is a U.S. Government work and is in the public domain in the USA.
Spatial localization of linear elastic waves in composite materials with defects
Authors: Andrianov I.V. , Danishevs'kyy V.V. , Kushnierov I.A. 
Published: August 2013

AbstractWe study the phenomenon of a spatial localization of elastic waves in periodic composite materials with local defects. The wave spectrum in heterogeneous composite solids includes pass and stop frequency bands. If the frequency of the signal falls within a stop band, the group velocity vanishes and the wave attenuates exponentially. In such a case, a local perturbation of the microstructure may lead to the localization of the wave energy in the vicinity of the defect. Longitudinal tension‐compression waves in a layered composite and transverse antiplane shear waves in a unidirectional fibrous composite are considered. Local perturbations of the density and of the volume fractions of the components are taken into account. The analysis is based on the transfer‐matrix method and on the plane‐wave expansions method. As the result, the frequencies of the wave localization and the corresponding attenuation factors are determined.