bluuebunny/crossref_metadata_2025_split huggingface dataset:
Massively Calcified Intravascular Cast after Removal of a Tunneled Central Vein Catheter for Hemodialysis
Authors: Capitanini Alessandro , Ricci Enrico , Frosini Pierfrancesco , Cupisti Adamasco 
Published: November 2012

Vascular calcifications usually affect the arteries, while central vein calcifications are rare. A 45-year-old hemodialysis patient underwent a chest CT scan before central vein catheterization required for arteriovenous access thrombosis, in July 2011. He was on hemodialysis since 1995 and from 2005 on warfarin treatment because of repeated thrombosis and dysfunction of arteriovenous fistula and central vein catheters (CVC). A previous tunneled CVC placed in the left external jugular vein was removed in December 2010. Eight months later a chest CT scan showed a 79-mm irregular, linear, tubular radiopaque density in the superior vena cava and left brachiocephalic vein. The possibility of a retained catheter fragment was considered, but the final diagnosis was: calcified “cast” adherent to the vessel wall. This is the first report of an intravenous calcified “cast” (originating from peri-catheter calcification) retained after removal of a tunneled dialysis CVC. This finding is significant because it mimics a retained catheter fragment possibly leading to misdiagnosis and exposing patients to additional risk for unnecessary retrieving interventions. Catheter removal or over the wire substitution in the presence of a calcified cast could also be considered a risky procedure. Retained calcified cast should be included among the long-term complications of hemodialysis CVCs. At the time of publication, the patient is alive without any complication related to the pathology reported.
Essential Components of Transition to Adult Transplant Services: The Transplant Coordinators' Perspective
Authors: Lerret Stacee Marie , Menendez Jerome , Weckwerth Jody , Lokar Joan , Mitchell Jeff , Alonso Estella M. 
Published: November 2012

Context Medical and surgical advancements have resulted in improved long-term survival of pediatric liver transplant recipients. As pediatric patients approach school age and adolescence, transplant centers are challenged to facilitate the process of transitioning from pediatric to adult centers. Objective To describe pediatric and adult liver transplant coordinators' perspective regarding practice for transitioning patients to adult-oriented transplant centers. Design Descriptive Setting Pediatric and adult liver transplant coordinators associated with Studies of Pediatric Liver Transplantation. Participants A total of 35 pediatric liver transplant coordinators and 24 adult liver transplant coordinators completed the survey. Method Investigator-developed survey to identify current practice for transition process and actual transfer of a patient from pediatric to adult care. Results Transplant coordinators play an integral role in the transition process, and study results highlight what experienced coordinators believe are important considerations for a successful transition process. Results also highlight the importance of communication and partnership between the pediatric and adult programs.
Body Image and Eating Attitudes and Behaviors among Adolescent Heart and Lung Transplant Recipients: A Brief Report
Authors: Todd Laura , Anthony Samantha , Dipchand Anne I. , Kaufman Miriam , Solomon Melinda , Stein Michael , Pollock-BarZiv Stacey 
Published: November 2012

Background Adolescents with chronic illnesses are at increased risk for body image and eating disorders; however, this has not been investigated in solid organ transplant recipients. Adolescent transplant recipients are a vulnerable cohort because of the sustained follow-up and immune-suppressing therapies, which often include steroids and may lead to weight gain and cosmetic changes. Consequences of body dissatisfaction such as disordered behaviors have not been well studied in transplant recipients. Purpose To examine body image, eating attitudes, and behaviors among 28 adolescent thoracic transplant recipients. Methods Adolescent (11–18 years old) heart and lung transplant recipients a minimum of 3 months after transplant provided informed written consent and completed a standardized questionnaire package about eating attitudes and behaviors; body image and drive for thinness; actual, perceived, and desired weight; and medical and anthropometric information (eg, body mass index) during regular transplant clinics. Results Of 25 heart and 3 lung transplant recipients (54% female; median age, 14.5 years; median, 1.6 years after transplant), 37% perceived their current weight as too high or low. Moreover, 81% were dissatisfied with their current weight (38% wanted to lose and 44% wanted to gain weight), yet few engaged in disordered behaviors. Conclusions Despite high levels of self-reported body dissatisfaction, low rates of disordered behaviors were observed. Weight dissatisfaction was high (81%) but bidirectional (to lose or to gain weight). Future assessment of disordered eating behaviors should include insidious activities such as medication nonadherence, in addition to traditional weight-control behaviors such as binge eating, strict dieting, or assiduous exercise. Further research will delineate the impact of body dissatisfaction and eating behaviors and outcomes on long-term transplant survivors, older adolescent cohorts, and other recipients of solid organ transplants.
Implementing a Standardized, Evidence-Based Education Program Using the Patient's Electronic File for Lung Transplant Recipients
Authors: Schaevers Veronique , Schoonis Annemie , Frickx Gerrit , Verleden Geert , Jans Christel , Rosseel Chris , Meelberghs Mieke , Reinquin Inge , Dobbels Fabienne ,   for the Interdisciplinary Lung Transplantation Team and the Information Technology Engineers
Published: November 2012

Context Patient education is crucial to guarantee that transplant recipients are capable of adequate self-management. Until recently, our education program to prepare lung transplant patients for discharge lacked a systematic approach, meaning that it was unclear whether all key information had been provided and whether the patient understood the information. A lack of coordination among the multi-disciplinary team members also was apparent. Objectives (1) To map out a structured education program, outlining the content, process, and evaluation of education for patients before discharge after lung transplant; (2) to integrate this program into the patient's electronic file and pilot test this new form of education tracking. Methods We used the conceptual framework of Lorig and colleagues, as well as the educational leaflets of the International Transplant Nurses Society, to generate the content of our education program. The interdisciplinary lung transplant team decided when and by whom each educational component should be provided, as well as the evaluation criteria. Next, information technology engineers integrated this educational program into the patient's electronic file. Nurses subsequently tested the program, and their feedback was integrated in the next version of the program. Results Health care providers experienced a higher level of uniformity and transparency. After using the education program, most patients indicated that they felt confident to go home. Conclusion Our electronic educational platform is promising, yet further testing is necessary to evaluate whether patients indeed have sufficient knowledge and show adequate self-management skills in the long term after transplant.
A square‐torsion modification of Einstein‐Cartan theory
Authors: Vignolo S. , Fabbri L. , Stornaiolo C. 
Published: November 2012

AbstractIn the present paper a theory of gravity is considered in which not only curvature but also torsion is explicitly present in the Lagrangian, both with their own coupling constant. In particular, the couplings to Dirac fields and spin fluids are discussed: in the case of Dirac fields, it is discusses how the Dirac self‐interactions depend on the coupling constant as a parameter that may even make these non‐linearitiesmanifest at subatomic scales, showing different applications according to the value of the parameter assigned; in the case of spin fluids, FLRW cosmological models arising from the proposed theory are discussed.
Adaptive Neural Dynamic Surface Control For Nonlinear Pure‐Feedback Systems With Multiple Time‐Varying Delays: A Lyapunov‐Razumikhin Method
Authors: Yu Zhao‐Xu , Yu Zhao‐Sheng 
Published: November 2012

AbstractThis paper focuses on the problem of adaptive neural control for a class of uncertain nonlinear pure‐feedback systems with multiple unknown time‐varying delays. The considered problem is challenging due to the non‐affine pure‐feedback form and the unknown system functions with multiple unknown time‐varying delays. Based on a novel combination of mean value theorem, Razumikhin functional method, dynamic surface control (DSC) technique and neural network (NN) parameterization, a new adaptive neural controller which contains only one parameter is developed for such systems. Moreover, The DSC technique can overcome the problem of ‘explosion of complexity’ in the traditional backstepping design procedure. All closed‐loop signals are shown to be semi‐globally uniformly ultimately bounded, and the tracking error converges to a small neighborhood of the origin. Two simulation examples are given to verify the effectiveness of the proposed design.
Pollution Prevention and Service Stewardship Strategies in the Third‐Party Logistics Industry: Effects on Firm Differentiation and the Moderating Role of Environmental Communication
Authors: Maas Steffen , Schuster Tassilo , Hartmann Evi 
Published: November 2012

ABSTRACTA growing number of firms are considering the incorporation of environmental thinking into their business strategies, hoping to improve their competitiveness. In this paper, we analyze the effects of pollution prevention and service stewardship capabilities on firm differentiation advantage in the third‐party logistics industry. Since prior research claims that complementary assets play an important role in fully understanding the environmental‐management‐competitiveness link, we furthermore examine the moderating role of environmental communication on the pollution‐prevention‐differentiation and the service‐stewardship‐differentiation linkages. We theoretically base our research in natural‐resource‐based thinking. Drawing on survey data, we apply multivariate regression and moderation analysis. The results highlight that pollution prevention and service stewardship capabilities can help third‐party logistics providers to achieve a differentiation advantage. Also, the results show that environmental communication moderates the effect of pollution prevention on differentiation advantage and can hence be considered a valuable complementary asset. Copyright © 2012 John Wiley & Sons, Ltd and ERP Environment.
Symbol error rate analysis and power allocation for hybrid cooperation in Rayleigh fading environment
Authors: Li Guoyan , Zhang Youguang 
Published: November 2012

SUMMARYIn this paper, we investigate the symbol error rate (SER) performance and power allocation for hybrid cooperation (HC) system in a Rayleigh fading environment. Specifically, we derive closed‐form and approximate SER expressions for the HC system by using the moment generating function (MGF)‐based approach. However, the resultant SER expressions contain an MGF of the harmonic mean of two independent random variables, which is not tractable in SER analysis. Then, we present simple and tight bounds on the SER to show the asymptotic behavior of the HC system. It is shown that the HC system achieves full diversity order. On the basis of the tight SER bound, the power allocation is investigated. It is found that the optimal power allocation (OPA) of the HC system does not depend on the fading parameter of the source‐to‐destination channel and it only depends on the channel links related to the relay. With the increase of the ratio of mean channel power gains (i.e., the ratio of the relay‐to‐destination channel gain to the source‐to‐relay channel gain), more performance gain can be acquired by using the OPA scheme. Finally, the analytical results are validated through computer simulations. Copyright © 2012 John Wiley & Sons, Ltd.
One‐Pot Synthesis of N‐(Imidazo[1,2‐a]pyridin‐3‐yl)‐ and N‐(Imidazo[2,1‐b][1,3]thiazol‐5‐yl)sulfonamides
Authors: Rozentsveig Igor B. , Serykh Valery Y. , Chernysheva Gulnur N. , Chernyshev Kirill A. , Kondrashov Evgeniy V. , Tretyakov Evgeny V. , Romanenko Galina V. 
Published: November 2012

AbstractThe reaction of 2‐aminopyridines or 2‐aminothiazole with N‐(2,2‐dichloro‐2‐phenylethylidene)arensulfonamides affords the corresponding products of nucleophilic addition to the azomethine group, N‐[2,2‐dichloro‐2‐phenyl‐1‐(heterylamino)ethyl]sulfonamides, in good yields. The latter are easily cyclized to (imidazo[1,2‐a]pyridin‐3‐yl)sulfonamides and (imidazo[2,1‐b]thiazol‐5‐yl)sulfonamides in the presence of alkali, whereas the expected isomeric (imidazo[1,2‐a]pyridin‐2‐yl)sulfonamides and (imidazo[2,1‐b]thiazol‐6‐yl)sulfonamides are not formed. A one‐pot two‐stage method for the synthesis of target heterocyclic compounds without the isolation of intermediates has been developed. A tentative mechanism of the formation of annulated heterocyclic derivatives has been proposed.
Electrogenerated N‐Heterocyclic Carbenes in the Room Temperature Parent Ionic Liquid as an Efficient Medium for Transesterification/Acylation Reactions
Authors: Chiarotto Isabella , Feroci Marta , Sotgiu Giovanni , Inesi Achille 
Published: November 2012

AbstractN‐Heterocyclic carbenes (NHCs), generated by electrochemical reduction under galvanostatic control of 1,3‐dialkylimidazolium‐based ionic liquids, were employed as catalysts in transesterification reactions in the parent, room temperature ionic liquids (RTILs) as solvents, without the utilisation of any volatile organic solvent or base. The reaction between isopropenyl or ethyl acetate and an alcohol (not efficient in the absence of catalyst) was induced by the presence of an electrogenerated NHC, which seems to assist the proton transfer from the alcohol to the ester, yielding the corresponding acetate. The reaction also proceeds with methyl nicotinate as starting ester and 2‐(diethylamino)ethanol or benzyl alcohol as alcohols and leads to the corresponding biologically active compounds, nicametate and benzyl nicotinate, in good yields. All products were isolated in good to excellent yields and complete recyclability of the ionic liquid as solvent has been demonstrated.
Direct Access to Fully Substituted 3‐Formyl‐4‐iodofurans through Iodocyclization of α‐Alkynyl β‐Alkoxy Enones
Authors: Raffa Guillaume , Balme Geneviève , Monteiro Nuno 
Published: November 2012

AbstractA facile access to 3‐formyl‐4‐iodofurans is presented. This protocol consists of a Sonogashira cross‐coupling of an α‐iodo β‐alkoxy enone with a terminal alkyne and the subsequent iodonium‐promoted heteroannulation–dealkoxylation of the resulting α‐alkynyl β‐alkoxy enone by treatment with N‐iodosuccinimide in aqueous medium.
The Anthropocene: is there a geomorphological case?
Authors: Brown Antony G. , Tooth Stephen , Chiverrell Richard C. , Rose James , Thomas David S. G. , Wainwright John , Bullard Joanna E. , Thorndycraft Varyl R. , Aalto Rolf , Downs Peter 
Published: November 2012

ABSTRACTThe ‘Anthropocene’, as used to describe the interval of recent Earth history during which humans have had an ‘overwhelming’ effect on the Earth system, is now being formally considered as a possible new geological Epoch. Such a new geological time interval (possibly equivalent to the Pleistocene Epoch) requires both theoretical justification as well as empirical evidence preserved within the geological record. Since the geological record is driven by geomorphological processes that produce terrestrial and near‐shore stratigraphy, geomorphology has to be an integral part of this consideration. For this reason, the British Society for Geomorphology (BSG) has inaugurated a Fixed Term Working Group to consider this issue and advise the Society on how geomorphologists can engage with debates over the Anthropocene. This ESEX Commentary sets out the initial case for the formalisation of the Anthropocene and a priori considerations in the hope that it will stimulate debate amongst, and involvement by, the geomorphological community in what is a crucial issue for the discipline. The Working Group is now considering the practical aspects of such a formalization including the relative magnitude problem, the boundary problem and the spatial diachrony of ‘anthropogenic geomorphology’. Copyright © 2013 John Wiley & Sons, Ltd.
A systematic review and meta‐analysis of group psychotherapy for sub‐clinical depression in older adults
Authors: Krishna Murali , Honagodu Abhijit , Rajendra Rajgopal , Sundarachar Rajesh , Lane Steven , Lepping Peter 
Published: November 2012

ObjectivesStudies investigating the effectiveness of group psychotherapy intervention in sub‐threshold depression have shown varying results with differing effect sizes. A systematic review of randomised controlled trials of group psychotherapy in older adults with sub‐threshold depression was conducted to present the best available evidence in relation to its effect on depressive symptomatology and the prevention of major depression.MethodsSystematic search of electronic databases and random effects model for meta‐analysis.ResultsFour clinical trials met the full inclusion criteria. Group cognitive behavioural therapy (CBT) is an effective intervention for reducing depressive symptoms in older adults with sub‐threshold depression in comparison to waiting list. Computerised CBT is at least as effective as group CBT in reducing depressive symptoms. The benefit of group CBT at follow‐up is not maintained. Group psychotherapy does not appear to reduce the risk of depressive disorder during follow‐up. There are fewer drop outs from group psychotherapy when compared with control conditions. The methodological quality of the studies and their reporting are sub‐optimal.ConclusionsGroup psychological interventions in older adults with sub‐threshold depression have a significant effect on depressive symptomatology, which is not maintained at follow‐up. Group psychotherapy does not appear to reduce the incidence of major depressive disorders. Copyright © 2012 John Wiley & Sons, Ltd.
Embodied Product Perception: Effects of Verticality Cues in Advertising and Packaging Design on Consumer Impressions and Price Expectations
Authors: van Rompay Thomas J. L. , de Vries Peter W. , Bontekoe Fenna , Tanja‐Dijkstra Karin 
Published: November 2012

ABSTRACTAs consumers increasingly turn to luxury brands and associated benefits, brand managers face the question how to convey luxury perceptions via marketing communications such as packaging and advertising design. Inspired by theories addressing embodied cognition and symbolic meaning portrayal, this paper argues that visual cues inspiring verticality perceptions (i.e., camera angle and advertising background orientation) affect luxury perceptions and, consequently, consumer evaluations and price expectations. Across three experiments, verticality cues fostered perceptions of product luxury but differentially affected price expectations and purchase considerations depending on product type. Moreover, findings show that effects of vertical orientation are more pronounced for participants high on sociable dominance. Implications of these findings for visual brand management are discussed.
Brand‐Situation Congruity: The Roles of Self‐Construal and Brand Commitment
Authors: Sung Yongjun , Choi Sejung Marina , Tinkham Spencer F. 
Published: November 2012

ABSTRACTThe present research examines the moderating roles of self‐construal and brand commitment in brand‐situation congruity effects in persuasion. Self‐construal refers to how individuals perceive themselves in the context of relationships with others (Singelis, 1994). Individuals with independent self‐construal, who emphasize autonomy and assertiveness, value consistency regardless of social contexts, whereas people with interdependent self‐construal value their relationships with others and adapt with flexibility to social situations. Commitment is a psychological state that globally represents the experience of dependence on a relationship and denotes a long‐term orientation, including a feeling of attachment to a relational partner and a desire to maintain a relationship (Rusbult, 1983). In the same vein, brand commitment refers to emotional or psychological attachment to and dependence on a brand (Beatty & Kahle, 1988x). Experiment 1 demonstrated that brand‐situation congruity, for which brand preference increases when the brand personality is congruent (vs. incongruent) with social situational cues, was stronger for interdependent (vs. independent) self‐construal individuals. Experiment 2 provided further support for the moderating role of self‐construal, when primed, in situation congruity effects as well as evidence for another moderator, brand commitment. That is, the moderating effect of self‐construal on brand‐situation congruity was stronger when consumers held weak (vs. strong) commitment to the target brand.
The Role of Ad‐Evoked Consumption Visions in Predicting Brand Attitudes: A Relevancy Principle Model
Authors: Chang Chingching 
Published: November 2012

ABSTRACTThis study examined ad‐evoked consumption visions to argue that when people are concerned about consumption experiences, they consider consumption visions relevant in formulating brand attitudes. To the degree that consumers perceive consumption visions as relevant, they should significantly influence brand attitudes. This research proposed a relevancy principle model to show that three possible factors likely enhance the relevancy of consumption visions and thus increase their influences on brand attitudes: product characteristics (i.e., hedonic nature), ad characteristics (i.e., consumption ad copy), and consumer characteristics (i.e., processing styles).
Gay Consumers and Brand Usage: The Gender‐Flexing Role of Gay Identity
Authors: Oakenfull Gillian 
Published: November 2012

ABSTRACTPrior research suggests that gender identity congruity between an individual and product brand will yield positive responses in terms of consumer behavior, However, gender atypicality has been observed among gay males and lesbians, which may confound previous research conducted under a heteronormative gaze. Drawing on research in psychology that considers gay identity as a cognitive construct and a component of self‐concept, the findings of this study indicate that an individual's strength of gay identity and involvement in the gay community appear to invert effects of “typical” gender schema congruity on brand usage for both gay males and lesbians.