bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mineralogy, micromorphology, geochemistry and genesis of a hydrothermal kaolinite deposit and altered Miocene host volcanites in the Hallaçlar area, Uşak, western Turkey
Authors: Erkoyun H. , Kadіr S. 
Published: September 2011

AbstractThe Hallaçlar kaolinite deposit of the Uşak Province (western Turkey) is hosted by dacite, andesite and siliceous materials of the Miocene Karaboldere volcanites. Mineralogical zonation, such as the prevalence of kaolinite at the centre of the deposit, coexisting with silica polymorphs such as quartz and cristobalite along with feldspar and hornblende, and a relative increase of smectite, illite, chlorite, and Fe-oxide/-hydroxide phases outward and upward, demonstrate that hydrothermal-alteration processes resulted in kaolinization. Micromorphologically, kaolinite occurs as pseudohexagonal blocky kaolinite with coarse-grained quartz in microfractures, and the presence of relatively fine-grained vermiform kaolinite that edges volcanic materials indicates that kaolinite developed in several phases coexisting with goethite, lepidocrocite, hematite, pyrite, jarosite, alunite, and gypsum/anhydrite with smectite in fractures. The highly crystallized Hallaçlar kaolinite is identified by: (1) sharp reflections at 7.23 and 3.57 Å, with triplet and doublet non-basal reflections; (2) sharp infrared spectral bands at 3687, 3651 and 3620 cm-1; (3) well defined, pseudohexagonal and hexagonal kaolinite crystal growth; (4) a chemical index of weathering of 98.6-100; and (5) SiO2/Al2O3ratios between 1.04 and 1.45. Enrichment of Sr and depletion of Rb+Ba, Ti, andHREErelative toLREE, with a distinct negative Eu anomaly, are responses to the fractionation of feldspar and hornblende by the hydrothermal fluid; these results are also supported by the O- and H-isotopic character and formation temperatures of the Hallaçlar kaolinite and smectite; namely, 134.1-183.4°C and 65.6°C, respectively. The negative δ34S (-20.7‰) value of gypsum/anhydrite reflects its formation from geothermal-water-derived sulphur. Under the influence of a tectonically controlled hydrothermal process, feldspar, hornblende and volcanic glass were altered, resulting in the conservation of Al and depletion of Si, Na, Ca, K, Mg and Fe in an open hydrological system such that formation of kaolinite in the central part of the deposit under acidic conditions and development of smectite and illite upward and outward under basic conditions were favoured.
Automation of size fractionation to extract clays and silts
Authors: Deng Youjun , Tenorio Arvide M. G. 
Published: September 2011

AbstractThe objective of this study was to build an automated size fractionator to process up to 16 samples at one time. Most parts used in the apparatus are inexpensive items, available from lawn irrigation, household appliance and aquatic pet supply stores. The device can be used to extract different silt and clay fractions by changing sedimentation time. A bentonite, a kaolin and an ironoxide-rich Oxisol were fractionated by this instrument to sequentially extract particles that have sizes equivalent to <2 µm, <5 µm, <10 µm and <20 µm quartz spheres. A laser diffraction particle size analyser revealed size differences in the different fractions and also showed that the silt fractions contained particles having slightly larger sizes than the assumed diameters of spherical quartz. Scanning electron microscope examination suggested that the greater particle size was mainly due to the non-spherical shapes of the particles and a reduced bulk density of the porous aggregates.
Das bedrohliche Arkadien: Der Feenhügel in der Theologie und Geschichtsschreibung des Mittelalters
Authors: Roling Bernd 
Published: September 2011

Abstract
Medieval literature inherited from the Latin pastoral tradition exemplified by Virgil and others the motif of an ideal landscape, a paradise of shepherds. The Arcadia of classical tradition, inhabited by nymphs, satyrs and the heathen gods, became for the medieval mind a garden of love, where Amor held council (as developed by the French allegorists, for example), or a philosophical paradise, where man was recreated and restored. At the same time, medieval historians and theologians found themselves confronted by a different kind of pagan paradise, namely the famous fairy hill of Romano-Celtic origin, which was inhabited not by fictional, but by real creatures such as elves and fairies. The Church Fathers condemned the fairy hill as a demonic illusion and the fairies as diabolical phantasms. This article will demonstrate that the literary description of the fairy hill in Latin tradition was strongly influenced by the idea of bucolic landscape, although it changed its character significantly: what once had been a literary model, now became a metaphysical reality and a concrete alternative to the contemporary world.
Effect of Resin Cement System and Root Region on the Push-out Bond Strength of a Translucent Fiber Post
Authors: Calixto LR , Bandéca MC , Clavijo V , Andrade MF , Vaz LGeraldo , Campos EA 
Published: September 2011

Clinical Relevance
The use of self-adhesive resin cements is an option for bonding fiber-reinforced composite posts to root canal dentin. Traditional resin cements apparently provide higher bond strengths than self-etch resin cements. Because of this, the bond strength of self-adhesive resin cements to root dentin should be evaluated.
Randomized Clinical Trial of Four Adhesion Strategies: 18-Month Results
Authors: Perdigão J , Dutra-Corrêa M , Saraceni CHC , Ciaramicoli MT , Kiyan VH , Queiroz CS 
Published: September 2011

Clinical Relevance

The 18-month retention rate of the two self-etch adhesives used in the present study was similar to that of two etch-and-rinse adhesives from the same manufacturer. However, the quality of enamel margins was significantly better for the two etch-and-rinse adhesives.

SUMMARY

Statement of the Problem
With Institutional Review Board approval, 39 patients who needed restoration of noncarious cervical lesions (NCCLs) were enrolled in this study. A total of 125 NCCLs were selected and randomly assigned to four groups: 1) a three-step etch-and-rinse adhesive, Adper Scotchbond Multi-Purpose (MP, 3M ESPE, St Paul, MN, USA); 2) a two-step etch-and-rinse adhesive, Adper Single Bond Plus (SB, 3M ESPE); 3) a two-step self-etch adhesive, Adper Scotchbond SE (SE, 3M ESPE); and 4) a one-step self-etch adhesive, Adper Easy Bond (EB, 3M ESPE). A nanofilled composite resin was used for all restorations. Restorations were evaluated at six months and 18 months using modified U.S. Public Health Service (USPHS) parameters.

Results
At six months after initial placement, 107 restorations (85.6% recall rate) were evaluated. At 18 months, 94 restorations (75.2% recall rate) were available for evaluation. The 6 mo/18 mo overall retention rates (%) were 100/90.9 for MP; 100/91.7 for SB; 100/90.9 for SE; and 96.4/92.3 for EB with no statistical difference between any pair of groups at each recall. Sensitivity to air decreased significantly for all adhesives from the preoperative to the postoperative stage and was stable thereafter. Interfacial staining did not change statistically from baseline to six months; however, interfacial staining at the enamel margins was statistically worse at 18 months than at baseline for the two self-etch adhesives EB and SE. Marginal adaptation was statistically worse at 18 months compared with baseline only for EB. This tendency was already significant at the six-month recall.

Conclusion
Although 18-month retention was similar for the different adhesion strategies, enamel marginal deficiencies were more prevalent for the self-etch adhesives.
Simple determination of nonionic surfactants in highly-polluted aqueous samples
Authors: Šváb Marek , Švábová Martina , Mečířová Petra 
Published: September 2011

AbstractThis study examined the direct spectrometric method for determining non-ionic surfactants in highly-polluted samples (i.e., soil leachates) containing high concentrations of humic acids. Meso-tetra-(3,5-dibromo-4-hydrooxyphenyl)-porphyrin served as a coloration agent. The method was tested by use of two polyethoxylate/polypropoxylate — based non-ionic surfactants: Triton CF-21 containing aromatic groups in the structure and Novanik 1047A containing only linear hydrocarbon chains. The main goal was to quantify the influence of interfering species to the results. A test for coincidence of regression lines was employed for objective evaluation of the humic acid influence on the determination. It was observed that for linear surfactant Novanik 1047 A the method provides reliable result and thus, can serve for routine analyses. Regarding Triton CF-21, an interfering effect of humic acids was observed; however, after sufficient dilution of the samples, the method can be used as well. Finally, the method can be used for simple analyses of problematic samples without complicated sample-pretreatment.
Amphiphilic azopolymers capable to generate photo-sensitive micelles
Authors: Moleavin Ioana , Ibanescu Constanta , Hodorog-Rusu Anca , Peptu Ecaterina , Doroftei Florica , Hurduc Nicolae 
Published: September 2011

AbstractAmphiphilic macromolecular micelles are advantageous for drug delivery applications due to the decrease of side-effects, ease of screening drugs against degradation, long-term stability, targeted delivery and control of the amount of the released drug. A series of amphiphilic azo-polymers having a flexible or rigid main-chain were synthesized and characterized. The presence of chlorobenzyl side-groups allowed both the easy bonding of photo-sensitive or hydrophilic groups and good control of the degree of substitution. The chemical structure was confirmed by 1H-NMR. The critical concentration of aggregation (CCA) was calculated using the fluorescence emission spectrum of pyrene. The interest was focused on a preliminary study concerning the disaggregation capacity of micelles under UV irradiation. The presence of micellar aggregates was confirmed by DLS and SEM and different organization of the amphiphilic polymers was evidenced depending on polymers concentration and polymers structure. In low polymer concentrations in water predominantly globular aggregates were formed. The increase in concentration increased the polydispersity index due to the fusion of micelles and formation of associates of globular aggregates, inter-micellar associates (clusters) and vesicles.
Influence of amino acid sequence on the interaction of short peptides containing 3-[2-(9-anthryl)benzoxazol-5-yl]-alanine with β-cyclodextrin
Authors: Mrozek Justyna , Guzow Katarzyna , Sikorska Emilia , Wiczk Wiesław 
Published: September 2011

AbstractThe influence of peptide sequence and Leu chirality in linear and cyclic peptides containing 3-[2-(9-anthryl)benzoxazol-5-yl]alanine on interaction with β-cyclodextrin were studied using fluorescence and NMR spectroscopy. The analysis of enthalpy-entropy compensation effect (α=1.05±0.02 and TΔS00=15.1±0.5 kJ mol−1) indicates that the entropic contribution connected with the solvent reorganization is the major factor governing the peptides-β-cyclodextrin complexation. Moreover, spatial orientation of guest-host molecule depends more than association constant on Leu residue configuration. However, the cyclization of the peptide chain substantially decrease the association constant with β-CD. An analysis of 2D NMR spectra reveals that inclusion complex is formed by penetration of cyclodextrin cavity from wider and narrow rims by anthryl group in the case of Box(Ant)-SPKL or anthryl and Leu residues for Box(Ant)-SPK(D)L analogue.
Assessment of Palatability of two Sublingual Diluents in Allergic Patients: A Prospective Pilot Study
Authors: Nguyen Shaun A. , Schlosser Rodney J. 
Published: September 2011

Background Taste of diluents could have an effect on the ultimate patient compliance and acceptability of allergenic extract formulations used in sublingual allergy immunotherapy. This study assessed the palatability and compared the flavor and taste preferences of two sublingual diluents in allergic adult patients. Methods This was a prospective, randomized, double-blinded pilot study. Diluents A (50% glycerin and water) and B (0.4% phenol and water) were tested. Three drops were placed in the sublingual area beneath the tongue for 2 minutes before swallowing. A 5-point analog scale was used to allow ranking of the degree of taste acceptance. Patients were then given a 10-minute break where unsalted crackers and bottled water were provided to cleanse the palate between tasting periods. After tasting both samples, patients were asked to answer a final question regarding taste preference. Results Of the 30 patients, there were 15 men and 15 women with a mean age of 38 years (range, 18 to 61 years). For diluent A, 18 (60.0%) patients graded the diluent as having a “pleasant” taste, 8 (26.7%) patients gave a grade of “very pleasant,” and 4 (13.3%) patients said that they were “not sure.” For diluent B, 16 (53.3%) patients gave a grade of “unpleasant” and only 6 (20.0%) patients gave a grade of “pleasant.” Finally, 28 (93.3%) of the 30 patients chose diluent A over diluent B as the preferred diluent of choice (p < 0.0001). Conclusion Fifty percent glycerin had better taste attributes and phenolated saline induced unpleasant oral sensation on sublingual dosing.
Epidemiological Analysis of Chronic Rhinitis in Pediatric Patients
Authors: Erwin Elizabeth A. , Faust Russell A. , Platts-Mills Thomas A.E. , Borish Larry 
Published: September 2011

Background Nonallergic rhinitis is a poorly understood entity, especially among pediatric patients. Objective The objective of this study was to identify clinical features that may distinguish phenotypes of allergic and nonallergic patients and to evaluate the usefulness of current diagnostic modalities. Methods We reviewed medical records for 151 pediatric patients with perennial rhinitis, evaluated in a multidisciplinary allergy and otolaryngology clinic. Results obtained by standard history, validated sinus and Nasal Quality of Life Survey (SN-5), epicutaneous allergy testing, acoustic rhinometry, and sinus CT were compared. Results Nasal congestion was the most frequent primary presenting complaint (62%). Among subjects having a positive allergy test, associated eye symptoms were more frequent (p = 0.01) and responses to the SN-5 allergic domain were higher (p = 0.02). Sinus CT scores were similar among allergic and nonallergic subjects (median 7 and 8, respectively) and did not correlate with symptom scores (p = 0.6). Among nonallergic subjects, quality of life ratings weakly correlated with sinus CT scores (r = 0.4; p = 0.05). By rhinometry, absolute mean cross-sectional area was similar among allergic (0.32 cm2 ) and nonallergic (0.36 cm2 ) subjects and did not correlate with symptom scores (p = 0.8 for allergic and p = 0.6 for nonallergic subjects). Distinct groups of nonallergic patients including those with prominent conjunctival pruritus (n = 24), frequent cold symptoms (n = 3), and chronic sinus disease (n = 2) were observed. Conclusion It is difficult to distinguish allergic and nonallergic rhinitis in patients with perennial disease, but associated eye symptoms and questionnaire responses are predictive of allergy. Acoustic rhinometry and sinus CT suggest that physical obstruction and sinus disease are not related to nasal symptoms including, surprisingly, the sensation of congestion.
The Impact of Assistive Equipment on Intimacy and Sexual Expression
Authors: Taylor Bridget 
Published: September 2011

Introduction: Sexuality is a holistic concept that involves more than the sexual act. Despite being a quality of life domain that promotes meaningful existence, it is an aspect of life that is often avoided by health care practitioners. Method: In this Heideggerian phenomenological study, conversational interviews were conducted with 13 people with motor neurone disease, and 10 of their partners, in order to understand their experiences of sexuality and intimacy. Findings: The findings provide evidence for the value of touch in people's lives and shed light upon the impact that assistive equipment has on intimacy, sexual expression and maintaining emotional and physical connection between couples. None of the people interviewed had previously been given the opportunity to discuss these issues with their occupational therapist. Conclusion: There is a place in occupational therapy practice for discussing the value of emotional and physical connection for individuals in the context of any equipment provided.
Preparation and characterization of β‐cyclodextrin‐linked chitosan microparticles
Authors: Luzardo‐Álvarez Asteria , Antelo‐Queijo Álvaro , Soto Victor H. , Blanco‐Méndez José 
Published: September 2011

AbstractHydrophobically modified chitosan containing β‐cyclodextrin (CD) units was synthesized by using tosylated β‐CD. The final product was characterized by Fourier transform infrared (FTIR) spectroscopy, elemental analysis and TGA, and rheometry. The polymer bearing β‐CD moieties was used to obtain crosslinked microparticles by spray‐drying which could then be used in a controlled release system for drugs. FTIR confirmed the formation of an amide linkage between cyclodextrin and chitosan. As fluorescence spectroscopy demonstrated, hydrophobic microenvironments were formed by chitosan bearing cyclodextrin in solution at lower concentrations than for chitosan. Rheometry and FTIR showed the crosslinking of the new polymer using genipin, a molecule of natural origin. Microspheres (MS) obtained by spray‐drying showed narrow size distribution when β‐CD was grafted onto chitosan and ξ‐potential of MS was slightly lower although it remained positive. In conclusion, β‐CD linked chitosan polymer can be considered as a very promising controlled drug delivery system for drugs. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
High expression of Lifeact in Arabidopsis thaliana reduces dynamic reorganization of actin filaments but does not affect plant development
Authors: van der Honing Hannie S. , van Bezouwen Laura S. , Emons Anne Mie C. , Ketelaar Tijs 
Published: September 2011

AbstractLifeact is a novel probe that labels actin filaments in a wide range of organisms. We compared the localization and reorganization of Lifeact:Venus‐labeled actin filaments in Arabidopsis root hairs and root epidermal cells of lines that express different levels of Lifeact: Venus with that of actin filaments labeled with GFP:FABD2, a commonly used probe in plants. Unlike GFP:FABD2, Lifeact:Venus labeled the highly dynamic fine F‐actin in the subapical region of tip‐growing root hairs. Lifeact:Venus expression at varying levels was not observed to affect plant development. However, at expression levels comparable to those of GFP:FABD2 in a well‐characterized marker line, Lifeact:Venus reduced reorganization rates of bundles of actin filaments in root epidermal cells. Reorganization rates of cytoplasmic strands, which reflect the reorganization of the actin cytoskeleton, were also reduced in these lines. Moreover, in the same line, Lifeact:Venus‐decorated actin filaments were more resistant to depolymerization by latrunculin B than those in an equivalent GFP:FABD2‐expressing line. In lines where Lifeact: Venus is expressed at lower levels, these effects are less prominent or even absent. We conclude that Lifeact: Venus reduces remodeling of the actin cytoskeleton in Arabidopsis in a concentration‐dependent manner. Since this reduction occurs at expression levels that do not cause defects in plant development, selection of normally growing plants is not sufficient to determine optimal Lifeact expression levels. When correct expression levels of Lifeact have been determined, it is a valuable probe that labels dynamic populations of actin filaments such as fine F‐actin, better than FABD2 does. © 2011 Wiley Periodicals, Inc.
Changing the System by Changing the Workforce: Employing Consumers to Increase Access, Cultural Diversity, and Engagement
Authors: Wenz-Gross Melodie , Irsfeld Toni DuBrino , Twomey Tammy , Perez Ana , Thompson Judith , Wally Martha , Colleton Barbara , Kroell Christine , McKeown Steven K. , Metz Peter 
Published: September 2011

AbstractServices to families have traditionally been delivered in a medical model. This presents challenges including workforce shortages, lack of cultural diversity, lack of training in strength‐based work, and difficulty in successfully engaging and retaining families in the therapy process. The system of care (SOC) effort has worked to establish formal roles for caregivers in SOC to improve services. This paper provides an example of one community's efforts to change the SOC by expanding the roles available to caregivers in creating systems change. It describes the model developed by Communities of Care (CoC), a SOC in Central Massachusetts, and its evolution over a 10 year period. First person accounts by system partners, caregivers hired into professional roles as well as a family receiving services, demonstrate how hiring caregivers at all levels can change systems and change lives, not only for those being served but for the caregiver/professionals doing the work. It also demonstrates, however, that change at the system level is incremental, takes time, and can be fleeting unless an ongoing effort is made to support and sustain those changes.
Complexity separating classes for edge-colouring and total-colouring
Authors: Machado Raphael , de Figueiredo Celina 
Published: September 2011

Abstract
The class of unichord-free graphs was recently investigated in a series of papers (Machado et al. in Theor. Comput. Sci. 411:1221–1234, 2010; Machado, de Figueiredo in Discrete Appl. Math. 159:1851–1864, 2011; Trotignon, Vušković in J. Graph Theory 63:31–67, 2010) and proved to be useful with respect to the study of the complexity of colouring problems. In particular, several surprising complexity dichotomies could be found in subclasses of unichord-free graphs. We discuss such results based on the concept of “separating class” and we describe the class of bipartite unichord-free as a final missing separating class with respect to edge-colouring and total-colouring problems, by proving that total-colouring bipartite unichord-free graphs is NP-complete.
Explaining the Female Black-White Obesity Gap: A Decomposition Analysis of Proximal Causes
Authors: Johnston David W. , Lee Wang-Sheng 
Published: September 2011

Abstract
There exist remarkably large differences in body weights and obesity prevalence between black and white women in the United States; and crucially, these differences are a significant contributor to black-white inequalities in health. In this article, we investigate the most proximal explanations for the weight gap: namely, differences in diet and exercise. More specifically, we decompose black-white differences in body mass index and waist-to-height ratio into components reflecting black-white differences in energy intake and energy expenditure. The analysis indicates that overconsumption is much more important than a lack of exercise in explaining the weight gap, which suggests that diet interventions will have to play a fundamental role if the weight gap between black and white women is to decline.