bluuebunny/crossref_metadata_2025_split huggingface dataset:
The role of maternal stress during pregnancy, maternal discipline, and child COMT Val158Met genotype in the development of compliance
Authors: Kok Rianne , Bakermans‐Kranenburg Marian J. , van IJzendoorn Marinus H. , Velders Fleur P. , Linting Mariëlle , Jaddoe Vincent W.V. , Hofman Albert , Verhulst Frank C. , Tiemeier Henning 
Published: May 2012

AbstractMaternal discipline is an important predictor of child committed compliance. Maternal stress can affect both parenting and child development. In a large population‐based cohort study (N = 613) we examined whether maternal discipline mediated the association between maternal stress during pregnancy and child compliance, and whether COMT or DRD4 polymorphisms moderated the association between maternal discipline and child compliance. Family‐related and general stress were measured through maternal self‐report and genetic material was collected through cord blood sampling at birth. Mother–child dyads were observed at 36 months in disciplinary tasks in which the child was not allowed to touch attractive toys. Maternal discipline and child compliance were observed in two different tasks and independently coded. The association between family stress during pregnancy and child committed compliance was mediated by maternal positive discipline. Children with more COMT Met alleles seemed more susceptible to maternal positive discipline than children with more COMT Val alleles. © 2012 Wiley Periodicals, Inc. Dev Psychobiol 55: 451–464, 2013
Monitoring Fluoride Binding in DMSO: Why is a Singular Binding Behavior Observed?
Authors: Goursaud Matthieu , De Bernardin Paolo , Dalla Cort Antonella , Bartik Kristin , Bruylants Gilles 
Published: May 2012

AbstractFluoride recognition by molecular receptors is attracting much interest in the scientific community and a variety of approaches are used to achieve recognition with high affinity and selectivity. Most of the synthetic systems reported have been extensively studied in organic solvents by using tetrabutylammonium fluoride (TBAF) as the source of fluoride. In many cases, titration behaviors are observed that cannot be ascribed to a classical 1:1 binding isotherm. By using UV/Vis, 19F NMR, and 1H NMR spectroscopy we have been able to highlight that the equilibrium between the fluoride and the corresponding bihalide ion, HF2–, which is inevitably generated in situ due to trace amounts of water, can be at the origin of this singular behavior. Our results highlight that when undertaking titrations with fluoride in DMSO, the data can be affected by the fluoride–bihalide equilibrium and that the latter species can even be the dominating species at low TBAF concentrations.
Highlights of the Keystone Symposium: sirtuins in metabolism, aging and disease
Authors: Maxwell Michele M. , Zaldivar‐Jolissaint Julien Francisco , Mai Antonello , Outeiro Tiago F. , Kazanstev Aleksey G. 
Published: May 2012

AbstractFrom February 12–16, 2012, leading members of the sirtuin scientific community assembled in Tahoe, CA to attend the Keystone Symposium “Sirtuins in Aging, Metabolism, and Disease.” It was a vibrant and lively meeting, and in the spirit of Keystone Symposia, both established sirtuin researchers and those new to the field enjoyed a unique opportunity to interact and exchange ideas.
Comprehensive expression profiling of microRNAs in laryngeal squamous cell carcinoma
Authors: Cao Pengyu , Zhou Liang , Zhang Jin , Zheng Fengyun , Wang Huijun , Ma Duan , Tian Jie 
Published: May 2012

AbstractBackgroundMicroRNAs (miRNAs) are noncoding RNAs involved in posttranscriptional regulation of gene expression in cancer and provide new perspectives on the development of laryngeal squamous cell carcinoma (SCC).MethodsmiRNA expression of 6 pairs of laryngeal SCC and adjacent normal tissues was screened using miRNA array. Laser capture microdissection was applied to isolate a homogeneous group of cells from laryngeal SCC samples. The results of miRNA array analysis were validated in 48 pairs of laryngeal SCC and adjacent normal tissues using quantitative RT‐PCR.ResultsTwenty‐nine differentially expressed miRNAs were detected in the 6 pairs of laryngeal SCC, of which 6 were confirmed, including upregulation of miR‐21, miR‐93, miR‐205, and miR‐708 and downregulation of miR‐125b and miR‐145. Their putative target genes were predicted using 3 online software programs.ConclusionThese differentially expressed miRNAs may play a role in tumorigenesis and progression in laryngeal SCC and offer new angles for further investigations into the function of miRNAs. © 2012 Wiley Periodicals, Inc. Head Neck, 2013
Occult metastases detected by sentinel node biopsy in patients with early oral and oropharyngeal squamous cell carcinomas: Impact on survival
Authors: Broglie Martina A. , Haerle Stephan K. , Huber Gerhard F. , Haile Sarah R. , Stoeckli Sandro J. 
Published: May 2012

AbstractBackgroundAnalysis of the lymphatic drainage pattern, the reliability of a negative sentinel lymph node biopsy (SLNB), as well as the impact of sentinel lymph node (SLN) metastases on regional control and survival in patients with early stage oral and oropharyngeal squamous cell carcinoma (SCC).MethodsA prospective consecutive cohort analysis was conducted which included 111 patients diagnosed between 2003 and 2010. Endpoints of the study were neck control rate, overall survival (OS), disease‐specific survival (DSS), and disease‐free survival (DFS), depending on the size of occult metastases.ResultsForty‐nine of 111 patients (38%) had positive SLNs, 10 had isolated tumor cells (ITCs), 19 had micrometastases, and 13 had macrometastases. OS, DSS, and DFS at 3 years for SLN‐negative and SLN‐positive patients was 98% and 71%, 95% and 76%, and 98% and 73%, respectively. Furthermore, there was a statistically significant difference between the SLN‐negative group and ITCs in DSS as well as between the SLN‐negative group and patients with micrometastases in OS and DSS and between the SLN‐negative group and patients with macrometastases in all 3 survival estimates.ConclusionOur study is the first to demonstrate that even small tumor deposits only detectable by the extensive histopathologic workup of the SLNB protocol have a significant impact on tumor control and survival in early Oropharyngeal SCC. Whether these findings will translate into different treatment strategies based on the upstaged neck has to be further investigated. © 2012 Wiley Periodicals, Inc. Head Neck, 2013
Topographic analysis for the prairie pothole region of Western Canada
Authors: Shaw Dean A. , Pietroniro Al , Martz L.W. 
Published: May 2012

AbstractThe unique topography of the pothole region of the North American prairies creates challenges for properly determining basin contributing area. Numerous depressions or potholes within the landscape impound runoff. However, potholes can ‘fill‐spill’ resulting in surface water connections between the potholes. Surface water connectivity between potholes ultimately influences basin contributing area. Currently, automated methods, such as landscape analysis tools, treat depressions in the landscape as artifacts and simply fill the depressions to delineate a drainage basin. Using this method to calculate contributing area assumes that all surface storage has been satisfied (threshold) and the drainage basin will contribute 100% of its area for all runoff events. However, most runoff events in the prairie pothole region are pre‐threshold events that contribute only a portion of surface runoff to the outlet. These pre‐threshold events have surface storage that varies because of antecedent water levels and have a variable or dynamic potential to store further runoff in the basin. Government agencies have developed methodologies for determining pre‐threshold contributing areas, but these methodologies do not incorporate current technologies and, as a result, have limitations.We propose an automated method for determining contributing area that incorporates the fill‐spill of prairie potholes. The algorithm, which uses the D‐8 drainage direction method, automates a methodology for identifying and quantifying runoff contributing area. Any algorithm that determines pre‐threshold contributing area, must allow the DEM to be filled in an incremental manner. This will simulate increasing pond levels, and the resulting decrease in available storage in the basin, in response to runoff events. The SPILL algorithm is an iterative solution that increases the magnitude of input runoff events and records the decreasing change in available surface storage and the increase in contributing area until the storage threshold is reached and the contributing area reaches 100%. Through application of the algorithm on prairie pothole region basins, we test proposed conceptual curves that describe a hypothesized non‐linear relationship between decreasing potential storage in the landscape and contributing area. Results indicate that the proposed conceptual curves represent the relationship between potential surface storage and contributing area in the test basins very well. Copyright © 2012 John Wiley & Sons, Ltd.
Inverse modelling for freshwater lens in small islands: Kish Island, Persian Gulf
Authors: Ataie‐Ashtiani Behzad , Rajabi Mohammad Mahdi , Ketabchi Hamed 
Published: May 2012

AbstractA number of challenges including instability, nonconvergence, nonuniqueness, nonoptimality, and lack of a general guideline for inverse modelling have limited the application of automatic calibration by generic inversion codes in solving the saltwater intrusion problem in real‐world cases. A systematic parameter selection procedure for the selection of a small number of independent parameters is applied to a real case of saltwater intrusion in a small island aquifer system in the semiarid region of the Persian Gulf. The methodology aims at reducing parameter nonuniqueness and uncertainty and the time spent on inverse modelling computations. Subsequent to the automatic calibration of the numerical model, uncertainty is analysed by constrained nonlinear optimization of the inverse model. The results define the percentage of uncertainty in the parameter estimation that will maintain the model inside a user‐defined neighbourhood of the best possible calibrated model. Sensitivity maps of both pressure and concentration for the small island aquifer system are also developed. These sensitivity maps indicate higher sensitivity of pressure to model parameters compared with concentration. These sensitivity maps serve as a benchmark for correlation analysis and also assist in the selection of observations points of pressure and concentration in the calibration process. Copyright © 2012 John Wiley & Sons, Ltd.
Greater effect of canopy conductance in regulating the energy partition above the maize field in arid northwest China
Authors: Li Sien , Kang Shaozhong , Zhang Lu , Li Fusheng , Du Taisheng , Tong Ling , Wang Shufen , Lu Hongna 
Published: May 2012

AbstractThe partition of available energy into evapotranspiration affected by environmental and physiological factors is critical in understanding the water cycle and optimizing the water management in the field. Our study attempted to accurately quantify the environmental and physiological control on variability in evaporative fraction (EF) based on the Penman–Monteith model. The eddy covariance method was used to measure water flux over a canopy and then calculate the EF above a maize field in northwest China in 2007. Results indicate that the EF was lower in other growth stages than in the heading stage, so the EF value in the heading stage was taken as the standard value. The decreases in EF caused by canopy conductance and environmental factors were 0.176 and −0.026, accounting for 117% and −17% of the total difference in EF, respectively. Such results were mainly due to the following: (1) the variation of maize canopy conductance was greater than that of the environmental factors, such as air temperature, air humidity, wind speed and radiation; (2) the EF of the maize was more sensitive to variation in canopy conductance than the environmental factor. Our study revealed that crop physiological factor played an important role in determining the energy partition processes and reducing the sensible heat flux in the maize field. Copyright © 2012 John Wiley & Sons, Ltd.
Sequential chemoradiotherapy with gemcitabine and cisplatin for locoregionally advanced nasopharyngeal carcinoma
Authors: Gu Mo‐Fa , Liu Li‐Zhi , He Long‐Jun , Yuan Wen‐Xin , Zhang Rong , Luo Guang‐Yu , Xu Guo‐Liang , Zhang Hua‐Man , Yan Chao‐Xian , Li Jian‐Jun 
Published: May 2012

AbstractWe investigated a new chemoradiotherapy (CRT) regimen for locoregionally advanced nasopharyngeal carcinoma (NPC). A total of 240 patients were randomly assigned to three different CRT regimens: sequential CRT [1 cycle chemotherapy + Phase I radiotherapy (RT) + 1 cycle chemotherapy + Phase II RT + 2 cycles chemotherapy] with a cisplatin–gemcitabine (GC) regimen (800 mg/m2 gemcitabine on Days 1 and 8 and 20 mg/m2 cisplatin on Days 1–5, every 4 weeks) (sGC‐RT); sequential chemoradiotherapy with a cisplatin–fluorouracil (PF) regimen (20 mg/m2 DDP and 500 mg/m2 5‐FU on Days 1–5, every 4 weeks) (sPF‐RT) and cisplatin‐based concurrent chemoradiotherapy plus adjuvant PF chemotherapy (Con‐RT + PF). The complete response rate was higher in the sGC + RT group than in the other two groups (98.75% vs. 92.50%, p < 0.01). The 3‐year overall survival (OS), disease‐free survival (DFS) and distant metastasis‐free survival (DMFS) rates in the sGC‐RT group were significantly higher than those observed in the Con‐RT group (OS, 95.0% vs. 76.3%, p < 0.001; DFS, 89.9% vs. 67.5%, p < 0.001; DMFS, 92.5% vs. 76.0%, p = 0.004) and in the sPF + RT group (OS, 95.0% vs. 73.6%, p < 0.001; DFS, 89.9% vs. 63.3%, p < 0.001; DMFS, 92.5% vs. 74.7%, p = 0.002). There were no significant differences in 3‐year OS, DFS and MFS rates between the Con‐RT and the sPF‐RT groups. The GC‐RT group experienced more hematologic toxicity, constipation and rash; however, there were no differences in late RT toxicity between the groups. These results demonstrate that a sGC‐RT regimen is effective and well tolerated in patients with locoregionally advanced NPC.
Ribonucleases P/MRP and the Expanding Ribonucleoprotein World
Authors: Hernandez‐Cid Aaron , Aguirre‐Sampieri Sergio , Diaz‐Vilchis Adelaida , Torres‐Larios Alfredo 
Published: May 2012

AbstractOne of the hallmarks of life is the widespread use of certain essential ribozymes. The ubiquitous ribonuclease P (RNase P) and eukaryotic RNase MRP are essential complexes where a structured, noncoding RNA acts in catalysis. Recent discoveries have elucidated the three‐dimensional structure of the ancestral ribonucleoprotein complex, suggested the possibility of a protein‐only composition in organelles, and even noted the absence of RNase P in a non‐free‐living organism. With respect to these last two findings, import mechanisms for RNases P/MRP into mitochondria have been demonstrated, and RNase P is present in organisms with some of the smallest known genomes. Together, these results have led to an ongoing debate regarding the precise definition of how “essential” these ribozymes truly are. © IUBMB IUBMB Life, 2012.
Acceptance as a process variable in relation to catastrophizing in multidisciplinary pain treatment
Authors: Baranoff J. , Hanrahan S.J. , Kapur D. , Connor J.P. 
Published: May 2012

AbstractBackgroundThe underlying processes of change that contribute to the effectiveness of multidisciplinary pain treatment require clarification. Previous research has found support for pain acceptance as a process variable in acceptance‐based treatment. Preliminary findings indicate that pain acceptance may also be a process variable in traditional cognitive behavioural therapy (CBT). The aim of this study was to investigate the role of pain acceptance as a process variable in CBT relative to two empirically supported process variables, namely catastrophizing and pain intensity.MethodsPatients with chronic pain (n = 186) attended a 3‐week, multidisciplinary pain programme, which was CBT based. Patients completed a measure of pain intensity; the Chronic Pain Acceptance Questionnaire; the catastrophizing subscale of the Pain Response Self‐Statements Scale; the Roland Morris Disability Questionnaire; the Depression Anxiety and Stress Scale; and two measures of physical functioning at pretreatment, post‐treatment and 3‐month follow‐up.ResultsBoth acceptance and catastrophizing showed statistically significant and clinically relevant changes from pre‐ to post‐treatment. Changes in both acceptance and catastrophizing showed a significant correlation with changes in almost all of the outcome variables. Regression analyses demonstrated that change in acceptance was a significant predictor of changes in depression, disability, timed walk and sit‐to‐stand performance, after controlling for changes in catastrophizing and pain intensity.ConclusionsAlthough not specifically targeted in CBT treatment, acceptance of pain was an important process variable that contributed to CBT treatment outcomes after controlling for changes in pain intensity and catastrophizing. Implications for future research and clinical practice are discussed.
Built to Bite: Feeding Kinematics, Bite Forces, and Head Shape of a SpecializedDurophagous Lizard,Dracaena Guianensis(Teiidae)
Authors: SCHAERLAEKEN VICKY , HOLANOVA VERONIKA , BOISTEL R. , AERTS PETER , VELENSKY PETR , REHAK IVAN , ANDRADE DENIS V. , HERREL ANTHONY 
Published: May 2012

ABSTRACTMost lizards feed on a variety of food items that may differ dramatically in their physical and behavioral characteristics. Several lizard families are known to feed upon hard‐shelled prey (durophagy). Yet, specializations toward true molluscivory have been documented for only a few species. As snails are hard and brittle food items, it has been suggested that a specialized cranial morphology, high bite forces, and an adapted feeding strategy are important for such lizards. Here we compare head and skull morphology, bite forces, and feeding kinematics of a snail‐crushing teiid lizard (Dracaena guianensis) with those in a closely related omnivorous species (Tupinambis merianae). Our data show that juvenileD. guianensisdiffer fromT. merianaein having bigger heads and greater bite forces. Adults, however, do not differ in bite force. A comparison of feeding kinematics in adultDracaenaandTupinambisrevealed thatDracaenatypically use more transport cycles, yet are more agile in manipulating snails. During transport, the tongue plays an important role in manipulating and expelling shell fragments before swallowing. AlthoughDracaenais slow, these animals are very effective in crushing and processing hard‐shelled prey.J. Exp. Zool. 317A:371–381, 2012. © 2012 Wiley Periodicals, Inc.
Acyclic List Edge Coloring of Graphs
Authors: Lai Hsin-Hao , Lih Ko-Wei 
Published: May 2012

AbstractA proper edge coloring of a graph is said to be acyclic if any cycle is colored with at least three colors. An edge-list L of a graph G is a mapping that assigns a finite set of positive integers to each edge of G. An acyclic edge coloring ϕ of G such that for any is called an acyclic L-edge coloring of G. A graph G is said to be acyclically k-edge choosable if it has an acyclic L‐edge coloring for any edge‐list L that satisfies for each edge e. The acyclic list chromatic index is the least integer k such that G is acyclically k‐edge choosable. We develop techniques to obtain bounds for the acyclic list chromatic indices of outerplanar graphs, subcubic graphs, and subdivisions of Halin graphs.
On Forbidden Pairs Implying Hamilton‐Connectedness
Authors: Faudree Jill R. , Faudree Ralph J. , Ryjáček Zdeněk , Vrána Petr 
Published: May 2012

AbstractLet X, Y be connected graphs. A graph G is ‐free if G contains a copy of neither X nor Y as an induced subgraph. Pairs of connected graphs such that every 3‐connected ‐free graph is Hamilton connected have been investigated most recently in (Guantao Chen and Ronald J. Gould, Bull. Inst. Combin. Appl., 29 (2000), 25–32.) [8] and (H. Broersma, R. J. Faudree, A. Huck, H. Trommel, and H. J. Veldman, J. Graph Theory, 40(2) (2002), 104–119.) [5]. This paper improves those results. Specifically, it is shown that every 3‐connected ‐free graph is Hamilton connected for and or N1, 2, 2 and the proof of this result uses a new closure technique developed by the third and fourth authors. A discussion of restrictions on the nature of the graph Y is also included.
FINANCIAL SECTOR DEVELOPMENT AND INEQUALITY: IS THERE A FINANCIAL KUZNETS CURVE?
Authors: Nikoloski Zlatko 
Published: May 2012

AbstractThe existing empirical knowledge in the area of financial sector development and income inequality finds evidence for the theoretical work which posits a simple, linear relationship between the two variables. In this article, we subject the extant empirical knowledge to close scrutiny and point out to a potential dynamic and endogenous relationship between financial sector development and inequality. By using dynamic multivariate panel data analysis on a carefully selected data set of income inequality data for developed and developing countries spanning the period 1962–2006, we find robust empirical evidence for the existence of an inverted U‐curve relationship between financial sector development and income inequality. In that token, we confirm the theoretical stipulations of Greenwood and Jovanovic (1990) for an inverted U‐curve relationship between the financial sector and income inequality. Copyright © 2012 John Wiley & Sons, Ltd.
An empirical analysis of surface acting in intra‐organizational relationships
Authors: Ozcelik Hakan 
Published: May 2012

SummaryPrior research analyzing surface acting—employees' regulation of emotional expressions—has mostly focused on the interactions between front‐line employees and their customers in service industries and paid very little attention to intra‐organizational relationships. With an aim to shed light on this important yet relatively unexplored area, I developed a theoretical model analyzing the antecedents and outcomes of surface acting within organizations, by drawing on the sociometer theory and self‐presentation theory frameworks.To test the model, I conducted a cross‐level field study in a sample of 65 work groups and 478 employees in two organizations, located in a large city in Northern California. I have collected the data from two sources, including employees and their supervisors who rated their performance. Results indicated that employees were more likely to engage in surface acting when their affective traits and personal goals were less congruent with work environment. Surface acting was also positively related to perceived organizational politics and self‐monitoring. As for outcomes, surface acting was positively related to emotional exhaustion and negatively to performance. I discuss limitations, implications, and future research direction. Copyright © 2012 John Wiley & Sons, Ltd.
High‐performer turnover and firm performance: The moderating role of human capital investment and firm reputation
Authors: Kwon Kiwook , Rupp Deborah E. 
Published: May 2012

SummaryResearch has shown a complex relationship between turnover and firm performance. Not only does it matter who leaves (e.g., high‐performing versus low‐performing employees), but the context also stands to influence this effect in complex ways. We apply human capital theory, social capital theory, and the cost–benefit perspective to propose two boundary conditions to the high‐performer turnover and firm performance relationship. Specifically, we predict that the negative impact of high‐performer turnover on firm performance will be the strongest for reputable firms and for firms who invest less in human capital (e.g., selection, training, and incentive‐based pay). We present data from 155 South Korean firms that support the hypothesized model. We discuss findings in terms of current and future theory, practical implications, and subsequent research needs. Copyright © 2012 John Wiley & Sons, Ltd.