bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transition to Self-Management after Pediatric Heart Transplant
Authors: Meaux Julie B. , Green Angela , Nelson Mary Kathryn , Huett Amy , Boateng Beatrice , Pye Sherry , Schmid Barbara , Berg Alex , LaPorte Kelci , Riley Linda 
Published: September 2014

Context Little is known about adolescent transition to self-management after heart transplant. This gap in knowledge is critically important because the consequences of poor self-management are costly and life-threatening, often resulting in nonadherence, rejection, repeated hospitalizations, and poor quality of life. Objective To explore how adolescents and parents perceive their roles in self-management, and how adolescents integrate self-management into their daily lives and navigate the transition from parent-dominated to self-management. Design Qualitative descriptive design, using online focus groups. Setting Online focus groups using itracks, an online qualitative software program. Participants A purposive sample of 4 adolescents, 13 to 21 years old, who were at least 6 months posttransplant, and of 6 parents of adolescent heart transplant recipients. Results Several parallel themes emerged from the parent and adolescent online focus groups. Managing medications was the predominant theme for both parents and adolescents. For the remaining themes, parents and adolescents expressed similar ideas that were categorized into parallel themes, which included staying on top of things/becoming independent, letting them be normal/being normal, and worries and stressors. Conclusions The transition to self-management after heart transplant was a clear goal for both parents and adolescents. The transition is a shared responsibility between parents and adolescents with a gradual shift from parent-directed to self-management. The process of transition was not linear or smooth, and in several instances, parents described efforts to transfer responsibility to the adolescent only to take it back when complications arose. Additional research with a larger sample is needed in order to fully understand adolescent heart transplant recipients' transition to self-management.
Development and Testing of a Disease-Specific Health Literacy Measure in Kidney Transplant Patients
Authors: Kazley Abby Swanson , Jordan Jessica , Simpson Kit N. , Chavin Kenneth , Rodrigue Jim , Baliga Prabhakar 
Published: September 2014

Context Health literacy affects a patient's ability to navigate through the system of care for late-stage kidney disease, including evaluation, waiting, and recovering from kidney transplant. Objectives To develop and provide a preliminary evaluation of a knowledge and decision-making capacity tool, which is a component of health literacy. Design Cross-sectional design with purposive sampling. Setting Vascular access, dialysis, and outpatient transplant clinics. Methods A Decision-Making Capacity Assessment Tool (DMCAT) was developed and administered to 127 adults at different stages in the kidney care process. Results The DMCAT tool is positively and significantly correlated to the other 2 previously validated instruments and accounts for more variance than the other 2 tools in the regression models. We found significant differences in patients' health literacy and decision-making capacity related to their stage of care. Decision-making capacity appeared to be an important component of health literacy and should be considered as health care providers tailor care to meet patients' needs.
Living with a Heart Transplant: A Phenomenological Study
Authors: Peyrovi Hamid , Raiesdana Nayyereh , Mehrdad Neda 
Published: September 2014

Background Heart transplantation is a relatively new medical treatment for end-stage heart failure. Many studies have addressed the outcomes and the complications and technical problems associated with heart transplants, but few have explored the whole clinical experience of being a heart transplant recipient. Purpose To understand and gain deeper insight into the lived experience of Iranian heart transplant recipients. Methods Interviews of 11 heart transplant recipients were analyzed according to phenomenological guidelines set forth by Diekelmann. Results Six major themes emerged from 29 subthemes, depicting the meaning of living with a transplanted heart. These themes include having a new life, living with new concerns, living with vigilance, paradoxical emotions, bearing others' behaviors, and the prominent role of God in life. Conclusion Heart transplant recipients in Iran experience a new life in which their faith in God helps them go through hardships and difficulties.
Visible, near‐infrared spectrometry for simultaneous assessment of geophysical sediment properties (water and grain size) using the Spectral Derivative–Modified Gaussian Model
Authors: Verpoorter C. , Carrère V. , Combe J.‐P. 
Published: September 2014

AbstractThe main objective of this study is to extract from reflectance spectra the geophysical properties of mudflat sediments such as water content and grain size. As mentioned in the literature, difficulties remain in separating the respective contributions of grain size and water on the reflectance continuum. This paper deals with the evaluation of a new methodological approach, the Spectral Derivative–Modified Gaussian Model (SD‐MGM) for establishing the relationship between the spectral features and the geophysical properties of sediments. The SD‐MGM enables the deconvolution of spectra into two main components: (1) Gaussian curves for the absorption bands and (2) a straight line in the wave number domain for the portion of the spectrum that represents continuum. While the retrieved Gaussian features are known to be reliable indicators of the composition, it is shown that the retrieved continuum can be used as a novel approach for determining grain size and water content. Based on regression analyses between the SD‐MGM spectral output parameters and the geophysical properties, a quantitative relationship between water content and the way in which the shape of the water band depth at 0.97 µm and 2.8 µm changes has been found during dehydration. It is shown that it is possible to separate three water types present in the sediment structure: saturated, free, and adsorbed waters with high coefficients of determination (r2) of 0.97, 0.98, and 0.94, respectively. The continuum is also revealed to be a useful water content indicator because it is less affected by atmospheric effects.
Cloud partitioning of isocyanic acid (HNCO) and evidence of secondary source of HNCO in ambient air
Authors: Zhao R. , Lee A. K. Y. , Wentzell J. J. B. , Mcdonald A. M. , Toom‐Sauntry D. , Leaitch W. R. , Modini R. L. , Corrigan A. L. , Russell L. M. , Noone K. J. , Schroder J. C. , Bertram A. K. , Hawkins L. N. , Abbatt J. P. D. , Liggio J. 
Published: September 2014

AbstractAlthough isocyanic acid (HNCO) may cause a variety of health issues via protein carbamylation and has been proposed as a key compound in smoke‐related health issues, our understanding of the atmospheric sources and fate of this toxic compound is currently incomplete. To address these issues, a field study was conducted at Mount Soledad, La Jolla, CA, to investigate partitioning of HNCO to clouds and fogs using an Acetate Chemical Ionization Mass Spectrometer coupled to a ground‐based counterflow virtual impactor. The first field evidence of cloud partitioning of HNCO is presented, demonstrating that HNCO is dissolved in cloudwater more efficiently than expected based on the effective Henry's law solubility. The measurements also indicate evidence for a secondary, photochemical source of HNCO in ambient air at this site.
Topography of the 410 and 660 km discontinuities beneath the Korean Peninsula and southwestern Japan using teleseismic receiver functions
Authors: Lee Sang‐Hyun , Rhie Junkee , Park Yongcheol , Kim Kwang‐Hee 
Published: September 2014

AbstractTopography of the 410 and 660 km seismic upper mantle discontinuities beneath the Korean Peninsula and southwestern Japan were determined using teleseismic receiver functions. P receiver functions were migrated from delayed times to corresponding piercing (conversion) points of P‐to‐S converted phases, using one‐dimensional (1‐D) and three‐dimensional (3‐D) models. Receiver functions were then stacked using Common Conversion Point (CCP) techniques, to enhance signal‐to‐noise ratios and thereby reduce uncertainty (noise). The 410 and 660 km discontinuities were clearly imaged, as positively valued amplitude peaks of CCP stacked receiver functions in the study area. Topographic variations were roughly consistent with the low temperature of the subducting Pacific Plate. However, the complex structure of the subducting Pacific Plate produced distinct changes of upper mantle discontinuities, which cannot be explained by temperature variations alone. Depression of the 410 km discontinuity, observed in a wide region extending from the Korean Peninsula to Kyushu Island, may be related to trench rollback history. Furthermore, the topography of the 660 km discontinuity varies significantly with latitude. At latitudes higher than 38°N, its depth remains unchanged, despite the presence of the stagnant slab, while significant depression has been observed at latitudes below 36°N. This may have been caused by differences in the angles of subduction of the Japan slab and the Izu‐Bonin slab. However, heterogeneity of the water content of slabs may also have contributed to this topographical difference.
Impact of Medication Withdrawal Method on Flare‐Free Survival in Patients with Juvenile Idiopathic Arthritis on Combination Therapy
Authors: Chang Caroline Y. , Meyer Rika M. L. , Reiff Andreas O. 
Published: September 2014

ObjectiveTo determine whether order of medication withdrawal in children with juvenile idiopathic arthritis (JIA) taking methotrexate (MTX) and tumor necrosis factor inhibitor (TNFi) combination therapy (CBT) affects flare‐free survival (FFS).MethodsThis retrospective observational study of 335 patients with polyarticular JIA or enthesitis‐related arthritis analyzed FFS off medications in 4 withdrawal arms: 1) TNFi plus MTX, off MTX first, 2) TNFi plus MTX, off TNFi first, 3) MTX monotherapy, or 4) TNFi monotherapy. Outcomes were evaluated based on order of medication withdrawal, clinical presentation, serologic parameters, and duration of clinically inactive disease (CID) while taking medications.ResultsSixty‐four percent of all patients achieved CID. However, 89% of patients on CBT who withdrew TNFi first flared within 12 months despite continuing MTX, compared to 12% of those who withdrew MTX and continued TNFi (P < 0.0005). Twenty‐seven percent of patients discontinued all medications, but 63% flared within 12 months, and only 49% of these regained CID within 12 months of restarting therapy. Patients on MTX monotherapy had the best FFS after medication withdrawal. FFS was independent of disease subtype, rheumatoid factor status, initial erythrocyte sedimentation rate, initial joint count, corticosteroid exposure, time in CID, and method of medication discontinuation.ConclusionThis study confirms that flare rates in JIA are high, and discontinuing medications is challenging. Withdrawal of TNFi from CBT first carries a significantly higher risk of disease flare than withdrawing MTX first. The high relapse rate after discontinuation of TNFi suggests that these medications may not modify the underlying disease process.
Isolation of the Copper Redox Steps in the Standard Selective Catalytic Reduction on Cu‐SSZ‐13
Authors: Paolucci Christopher , Verma Anuj A. , Bates Shane A. , Kispersky Vincent F. , Miller Jeffrey T. , Gounder Rajamani , Delgass W. Nicholas , Ribeiro Fabio H. , Schneider William F. 
Published: September 2014

AbstractOperando X‐ray absorption experiments and density functional theory (DFT) calculations are reported that elucidate the role of copper redox chemistry in the selective catalytic reduction (SCR) of NO over Cu‐exchanged SSZ‐13. Catalysts prepared to contain only isolated, exchanged CuII ions evidence both CuII and CuI ions under standard SCR conditions at 473 K. Reactant cutoff experiments show that NO and NH3 together are necessary for CuII reduction to CuI. DFT calculations show that NO‐assisted NH3 dissociation is both energetically favorable and accounts for the observed CuII reduction. The calculations predict in situ generation of Brønsted sites proximal to CuI upon reduction, which we quantify in separate titration experiments. Both NO and O2 are necessary for oxidation of CuI to CuII, which DFT suggests to occur by a NO2 intermediate. Reaction of Cu‐bound NO2 with proximal NH4+ completes the catalytic cycle. N2 is produced in both reduction and oxidation half‐cycles.
Chiral Counteranion Strategy for Asymmetric Oxidative C(sp3)H/C(sp3)H Coupling: Enantioselective α‐Allylation of Aldehydes with Terminal Alkenes
Authors: Wang Pu‐Sheng , Lin Hua‐Chen , Zhai Yu‐Jia , Han Zhi‐Yong , Gong Liu‐Zhu 
Published: September 2014

AbstractThe first enantioselective α‐allylation of aldehydes with terminal alkenes has been realized by combining asymmetric counteranion catalysis and palladium‐catalyzed allylic CH activation. This method can tolerate a wide scope of α‐branched aromatic aldehydes and terminal alkenes, thus affording allylation products in high yields and with good to excellent levels of enantioselectivity. Importantly, the findings suggest a new strategy for the future creation of enantioselective CH/CH coupling reactions.
Discovery of Highly Selective Alkyne Semihydrogenation Catalysts Based on First‐Row Transition‐Metallated Porous Organic Polymers
Authors: Tanabe Kristine K. , Ferrandon Magali S. , Siladke Nathan A. , Kraft Steven J. , Zhang Guanghui , Niklas Jens , Poluektov Oleg G. , Lopykinski Susan J. , Bunel Emilio E. , Krause Theodore R. , Miller Jeffrey T. , Hock Adam S. , Nguyen SonBinh T. 
Published: September 2014

AbstractFive different first‐row transition metal precursors (VIII, CrIII, MnII, CoII, NiII) were successfully incorporated into a catechol porous organic polymer (POP) and characterized using ATR‐IR and XAS analysis. The resulting metallated POPs were then evaluated for catalytic alkyne hydrogenation using high‐throughput screening techniques. All POPs were unexpectedly found to be active and selective catalysts for alkyne semihydrogenation. Three of the metallated POPs (V, Cr, Mn) are the first of their kind to be active single‐site hydrogenation catalysts. These results highlight the advantages of using a POP platform to develop new catalysts which are otherwise difficult to achieve through traditional heterogeneous and homogeneous routes.
Variable‐Structure Control with Complementarity‐Inputs for a Lean‐Burn IC Engine of a Series Hybrid Vehicle
Authors: Roqueiro N. , Fossas E. , Oliveira A.A. Martins , Puleston P. 
Published: September 2014

AbstractThis paper presents a robust controller for an internal combustion (IC) engine, as the first stage of a project to develop a hybrid light urban vehicle, running on ethanol in lean burn. In particular, this work focuses on the design of a sliding mode control for an IC engine of a series hybrid power train. The controller must allow for optimal speed regulation and high fuel efficiency. To attain the latter, a complementary operation mode is proposed for the system inputs. Simulation results are presented and discussed showing the viability and advantages of the control strategy employed.
Geographic analysis of individual and environmental risk factors for hypospadias births
Authors: Winston Jennifer J. , Meyer Robert E. , Emch Michael E. 
Published: September 2014

BackgroundHypospadias is a relatively common birth defect affecting the male urinary tract. We explored the etiology of hypospadias by examining its spatial distribution in North Carolina and the spatial clustering of residuals from individual and environmental risk factors.MethodsWe used data collected by the North Carolina Birth Defects Monitoring Program from 2003 to 2005 to estimate local Moran's I statistics to identify geographic clustering of overall and severe hypospadias, using 995 overall cases and 16,013 controls. We conducted logistic regression and local Moran's I statistics on standardized residuals to consider the contribution of individual variables (maternal age, maternal race/ethnicity, maternal education, smoking, parity, and diabetes) and environmental variables (block group land cover) to this clustering.ResultsLocal Moran's I statistics indicated significant clustering of overall and severe hypospadias in eastern central North Carolina. Spatial clustering of hypospadias persisted when controlling for individual factors, but diminished somewhat when controlling for environmental factors. In adjusted models, maternal residence in a block group with more than 5% crop cover was associated with overall hypospadias (odds ratio = 1.22; 95% confidence interval = 1.04–1.43); that is living in a block group with greater than 5% crop cover was associated with a 22% increase in the odds of having a baby with hypospadias. Land cover was not associated with severe hypospadias.ConclusionThis study illustrates the potential contribution of mapping in generating hypotheses about disease etiology. Results suggest that environmental factors including proximity to agriculture may play some role in the spatial distribution of hypospadias. Birth Defects Research (Part A) 100:887–894, 2014. © 2014 Wiley Periodicals, Inc.
Credibility in the blogosphere: A study of measurement and influence of wine blogs as an information source
Authors: Cosenza Tracy Rickman , Solomon Michael R. , Kwon Wi‐suk 
Published: September 2014

AbstractUncovering what drives the consumer to action is of interest to academia and industry alike, and the advent of social media has added a confounding layer to the consumer decision process. In some ways, it has changed nothing, and in other ways, it has changed everything. Information is at the heart of decision making, and blogs offer a plethora. A positive evaluation of credibility (believability) will ultimately determine its usability for decision making. Using centered resonance analysis of wine blog writers and readers focus group data, this study attempts to address the full range of blog characteristics (subsequent scale items) that can be evaluated for credibility, anchoring them to the relevant research streams of media, website, and word of mouth. Structural equation modeling of viral blog and Twitter survey data is used to test the hypothesized scale with three dimensions—site, message, and source—for validity and also evaluate the credibility influence on behavioral intentions as mediated by trust. Evidence suggests that the author (source) is central to credibility evaluation. The data also support the influence of wine blog credibility perceptions on trust, which leads to following wine blog recommendations and continuing to participate with the wine blog. Copyright © 2014 John Wiley & Sons, Ltd.
Spatially Confined Functionalization of Transparent NiO Thin Films with a Luminescent (1,10‐Phenanthroline)tris(2‐thenoyltrifluoroacetonato)europium Monolayer
Authors: Smecca Emanuele , Tudisco Cristina , Giuffrida Antonino E. , Catalano Maria R. , Speghini Adolfo , Malandrino Graziella , Condorelli Guglielmo G. 
Published: September 2014

AbstractTransparent MOCVD‐grown NiO films have been functionalized with the luminescent (1,10‐phenanthroline)tris(2‐thenoyltrifluoroacetonato)europium(III) complex [Eu(TTA)3phen] by combining sputter activation with a solution synthetic route. To introduce the Eu complex only on selected regions, some areas of the NiO surface were activated by Ar+ion sputtering and then functionalized with 3‐phosphonopropionic acid (CPPA) followed by the anchoring of Eu(TTA)3phen through a ligand‐exchange reaction between β‐diketonato ligands and the carboxylic groups of CPPA. The functionalized material was characterized by X‐ray photoelectron, UV/Vis and luminescence spectroscopy. XPS measurements indicated that CPPA prefunctionalization and, in turn, the Eu(TTA)3phen anchoring occurs only on the sputter‐activated region, while no anchoring takes place on the unactivated surface. The optical properties of the Eu(TTA)3phen–NiO system were evaluated by UV/Vis and luminescence spectroscopy.
Efficient Transfer of Chelating Amides into Different Types of Esters and Lactones
Authors: Jakob Uwe , Mundinger Stephan , Bannwarth Willi 
Published: September 2014

AbstractWe describe a general and versatile approach for the conversion of carboxylic acid amides into their corresponding esters despite the fact that the former are thermodynamically more stable. The transformations are mediated by the coordination of CuI by a chelating entity. The resulting weakening of the amide bond allows for nucleophilic attack by alcoholic hydroxyl functions. The principle is demonstrated for a wide variety of transformations, leading to different kinds of esters and lactones.
Sorghum‐based alcoholic beverage,Burukutu,perturbs the redox status of the liver of male rats
Authors: Ajiboye Taofeek O. , Iliasu Ganiyat A. , Ojewuyi Oluwayemisi B. , Abdulazeez Azeemat T. , Muhammed Aisha O. , Kolawole Fausat L. 
Published: September 2014

AbstractThe redox status of male rat liver following 28 days consumption ofBurukutuwas investigated. Twenty rats were randomized into four groups with five rats each.Burukutuconsumption at 0.78 g/kg alcohol produced no significant change in the activities of alkaline phosphatase (ALP), alanine aminotransferase (ALT), and aspartate aminotransferase (AST). However, 3.71 and 7.43 g/kg dosages resulted in significant decrease in the activities ofALP,ALTandASTwith corresponding increase in serum. The activity of cytochrome P450(CYP 2E1) increased significantly in the liver of rats following consumption ofBurukutuat all doses investigated. The activities of superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and glucose 6‐phosphate dehydrogenase decreased significantly (P < 0.05) in rats treat with 0.78 g/kg, 3.41 and 7.43 g/kgBurukutu. There was a significant increase in the level of glutathione disulfide (GSSG) with reduction in the levels of glutathione reduced (GSH) andGSH:GSSG. The levels of oxidative stress biomarkers, malondialdehyde, conjugated dienes, lipid hydroperoxides, protein carbonyl and percentageDNAfragmentation, increased significantly (P < 0.05). It is evident from the alterations in the activities of the hepatocellular enzymes, antioxidant enzymes and oxidative stress biomarkers thatBurukutumediated its toxicity through the depletion of the antioxidant enzymes.