bluuebunny/crossref_metadata_2025_split huggingface dataset:
New taxa and nomenclatural combinations in Potentilla L. (Rosaceae) Notes on Potentilla XXII
Authors: Soják J. 
Published: December 2006

AbstractNew taxa of the sections Anserina, Niveae, Pensylvanicae and Rectae from New Guinea, China, Mongolia, Iran, Transcaucasia, Central Asia, India and Greenland are described. Three varieties described from Malesia are elevated to the rank of species and three species occurring in Kashmir (and vicinity) and China (Yunnan and vicinity) are re‐evaluated as varieties. Potentilla arbuscula var. unifoliolata (Bhutan) is treated as a distinct species of Dasiphora.New taxaPotentilla scorpionis Soják, sp. novaPotentilla assimilis Soják, sp. novaPotentilla millefoliolata Soják, sp. novaPotentilla stipitata Soják, sp. novaPotentilla squalida Soják, sp. novaPotentilla assalemica Soják, sp. novaPotentilla lineata Trevir. subsp. exortiva Soják, subsp. novaPotentilla lyngei Jurtzev & Soják subsp. spissa Soják, subsp. novaPotentilla polyphylla Wall. ex Lehm. var. miranda Soják, var. novaPotentilla evestita Th. Wolf var. orthotricha Soják, var. novaNew combinationsPotentilla kinabaluensis (Stapf) Soják, comb. novaPotentilla victorialis (Soják) Soják, comb. novaPotentilla achillea (Soják) Soják, comb. novaPotentilla curviseta Hook. f. var. pteropoda (Royle) Soják, comb. novaPotentilla curviseta Hook. f. var. colletiana (Aitch. & Hemsl.) Soják, comb. novaPotentilla hypargyrea Hand.‐Mazz. var. pellita (Soják) Soják, comb. novaDasiphora unifoliolata (Ludlow) Soják, comb. nova
Large eddy simulation of turbulent flow in a true 3D Francis hydro turbine passage with dynamical fluid–structure interaction
Authors: Zhang Lixiang , Guo Yakun , Wang Wenquan 
Published: December 2006

AbstractResults are described from a combined numerical and laboratory model study of the turbulent flow in a true 3D blade passage of a Francis hydro‐turbine. The large eddy simulation (LES) is applied to investigate the intrinsic features and the spatial and temporal variations of the flow structures in the blade passage with strong wakes in inflow sweeping and the turbulence‐induced blade vibration. The flow passes through the vibrating boundaries. Therefore, the system under consideration is in a dynamic fluid–structure interaction (FSI). In the simulation, one‐coefficient dynamic sub‐grid scale (SGS) model is incorporated in LES with Reynolds number 148 400 to better describe the energy exchange mechanism between large and small scales under the influences of strong geometrical curvature and vibrating boundaries. The governing equation of the blade vibration with FSI has been established by generalized variational principle combining the fluid and the structure. The vibration analysis is carried out by using Wilson‐θ method. Separate iteration schemes are applied to solve the flow and the vibration in turn. The pressures on the wall sides of the blade and its vibrating accelerations are simultaneously measured. The numerical results show that the temporal and spatial distributions of turbulence in the 3D blade passage are significantly influenced by the curvature of blade configuration, the blade vibration, and the distorted wakes generated by flow passing through guide vanes. The influences of the vibration on the near‐wall flow structures are quite remarkable. The simulated results are favourably compared with the measurements. Copyright © 2006 John Wiley & Sons, Ltd.
The relationship between road traffic accidents and real economic activity in spain: common cycles and health issues
Authors: García‐ferrer Antonio , De Juan Aránzazu , Poncela Pilar 
Published: December 2006

AbstractThis paper analyses the aggregate relationships between traffic accidents and real economic activity in Spain during the last 30 years. Our general approach is based on two basic assumptions: (1) the number of accidents depends on the use of cars and other exogenous variables, and (2) the level of economic activity affects variation in the stock of cars, as well as degree of utilization. We propose a novel turning point characterization for monthly seasonal data that allows to check whether economic and road accident cycles coincide and, to date the beginning and end of their respective cycles. Empirical results from this section are important in establishing posterior causal models and whether or not economic activity and road accidents have a common component in the long run and a varying lead–lag relationship, depending on the cycles. These models will be the basis to check when Spain will achieve the European Union figures in terms of the fatalities/accidents ratio under different scenarios. Empirical results as well as historical experiences from other European countries proved that reducing fatalities is not only a question of diminishing accidents rates. Copyright © 2006 John Wiley & Sons, Ltd.
Radiotherapy response in oral squamous carcinoma cell lines: Evaluation of apoptotic proteins as prognostic factors
Authors: Roberg Karin , Jonsson Ann‐Charlotte , Grénman Reidar , Norberg‐Spaak Lena 
Published: December 2006

AbstractBackground.In this study, we investigated the importance of apoptosis for cell death after radiotherapy, and whether the expression of pro‐ and anti‐apoptotic proteins has any correlation to the radiosensitivity.Methods.Three oral squamous cell carcinoma cell lines, UT‐SCC‐2, UT‐SCC‐9 and UT‐SCC‐24A, were subjected to radiotherapy. After irradiation, viable and dead cells were counted to determine radiation sensitivity and apoptosis was analyzed by measurement of caspase‐3 activity. The expressions of pro‐ and anti‐apoptotic proteins were assessed using western blot analyses.Results and Conclusion.After irradiation, apoptotic morphology and caspase‐3 activity were only detected in cell lines exhibiting high or moderate radiosensitivity. Western blot analysis indicates that survivin, epidermal growth factor receptor, cyclooxygenase‐2, and Bcl‐xL are critical components in irradiation resistance of the investigated cell lines. Moreover, our results suggest that apoptotic cell death and the balance between pro‐ and anti‐apoptotic proteins are of importance for the outcome of radiotherapy. © 2006 Wiley Periodicals, Inc. Head Neck, 2007.
Noninvasive quantitative assessment of oral tongue cancer by intraoral ultrasonography
Authors: Yamane Masashi , Ishii Junichi , Izumo Toshiyuki , Nagasawa Tohru , Amagasa Teruo 
Published: December 2006

AbstractBackground.To assess tissue characterization of oral tongue cancer and prediction of subclinical cervical lymph node metastasis, we investigated whether intraoral ultrasonography could be used in conjunction with a computer‐aided diagnosis (CAD) system.Methods.The study population comprised 109 patients with presurgical, clinical T1N0 or T2N0 oral tongue squamous cell carcinoma who underwent partial glossectomy. All the patients were examined by preoperative intraoral and postoperative exvivo ultrasonography. To evaluate the ultrasonic imagesquantitatively, ultrasonographic parameters from tumor contour features were computed by using the proposed CAD system. The imaging results were correlated with histopathologic findings.Results.Oral tongue cancer was clearly identified in all patients by intraoral ultrasonography. Ultrasonic images of oral tongue cancer reflected the histopathologic structures. Subclinical cervical lymph node metastasis was predicted by intraoral ultrasonography. In a logistic regression analysis using the proposed CAD system, the diagnostic sensitivity, specificity, and accuracy for prediction of subclinical lymph node metastasis were 87.2%, 84.3%, and 85.3%, respectively.Conclusions.Intraoral ultrasonography in conjunction with the proposed CAD system allows tissue characterization and prediction of subclinical cervical lymph node metastasis. © 2006 Wiley Periodicals, Inc. Head Neck, 2007.
Effects of artemisinin and its derivatives on growth inhibition and apoptosis of oral cancer cells
Authors: Nam Woong , Tak Jungae , Ryu Ju‐Kyoung , Jung Mankil , Yook Jong‐In , Kim Hyung‐Jun , Cha In‐Ho 
Published: December 2006

AbstractBackground.Artemisinin is of special biological interest because of its outstanding antimalarial activity. Recently, it was reported that artemisinin has antitumor activity. Its derivatives, artesunate, arteether, and artemeter, also have antitumor activity against melanoma, breast, ovarian, prostate, CNS, and renal cancer cell lines. Recently, monomer, dimer, and trimer derivatives were synthesized from deoxoartemisinin, and the dimers and the trimers were found to have much more potent antitumor activity than the monomers.Methods.We evaluated the antitumor activity of artemisinin and its various derivatives (dihydroartemisinin, dihydroartemisinin 12‐benzoate, 12‐(2′‐hydroxyethyl) deoxoartemisinin, 12‐(2′‐ethylthio) deoxoartemisinin dimer, deoxoartemisinin trimer) in comparison with paclitaxel (Taxol), 5‐fluorouracil (5‐FU), cisplatin in vitro.Results.In this study, the deoxoartemisinin trimer had the most potent antitumor effect (IC50 = 6.0 μM), even better than paclitaxel (IC50 = 13.1 μM), on oral cancer cell line (YD‐10B). In addition, it induced apoptosis through a caspase‐3‐dependent mechanism.Conclusion.The deoxoartemisinin trimer was found to have greater antitumor effect on tumor cells than other commonly used chemotherapeutic drugs, such as 5‐FU, cisplatin, and paclitaxel. Furthermore, the ability of artemisinin and its derivatives to induce apoptosis highlights their potential as chemotherapeutic agents, for many anticancer drugs achieve their antitumor effects by inducing apoptosis in tumor cells. © 2006 Wiley Periodicals, Inc. Head Neck, 2007.
Scapula osteocutaneous free flap reconstruction of the head and neck: Impact of flap choice on surgical and medical complications
Authors: Smith Russell B. , Henstrom Douglas K. , Karnell Lucy H. , Chang Kristi C. , Goldstein David P. , Funk Gerry F. 
Published: December 2006

AbstractBackground.The scapula osteocutaneous free flap is frequently used to reconstruct complex head and neck defects given its tissue versatility. Because of minimal atherosclerotic changes in its vascular pedicle, this flap also may be used as a second choice when other osseous flaps are not available because of vascular disease at a preferred donor site.Methods.We performed a retrospective chart review evaluating flap outcome as well as surgical and medical complications based upon the flap choice.Results.The flap survival rate was 97%. The surgical complication rate was similar for the 21 first‐choice flaps (57.1%) and the 12 second‐choice flaps (41.7%; p = .481). However, patients having second‐choice flaps had a higher rate of medical complications (66.7%) than those with first‐choice flaps (28.6%; p = .066). Age and the presence of comorbidities were associated with increased medical complications. All patients with comorbidities that had a second‐choice flap experienced medical complications, with most being severe.Conclusions.The scapula osteocutaneous free flap has a high success rate in head and neck reconstruction. Surgical complications occur frequently regardless of whether the flap is used as a first or second choice. However, medical complications are more frequent and severe in patients undergoing second‐choice flaps. © 2006 Wiley Periodicals, Inc. Head Neck, 2007.
Nuclear power plant communications in normative and actual practice: A field study of control room operators' communications
Authors: Carvalho Paulo V.R. , Vidal Mario C.R. , de Carvalho Eduardo F. 
Published: December 2006

AbstractThe safety and availability of sociotechnical critical systems still relies on human operators, both through human reliability and human ability to handle adequately unexpected events. In this article, the authors focus on ergonomic field studies of nuclear power plant control room operator activities, and more specifically on the analysis of communications within control room crews. They show how operators use vague and porous verbal exchanges to produce continuous, redundant, and diverse interactions to successfully construct and maintain individual and mutual awareness, which is paramount to achieve system stability and safety. Such continuous interactions enable the operators to prevent, detect, and reverse system errors or flaws by anticipation or regulation. This study helps in providing cues for the design of more workable systems for human cooperation in nuclear power plant operation. © 2007 Wiley Periodicals, Inc. Hum Factors Man 17: 43–78, 2007.
Sustainable development of a suggestion system: Factors influencing improvement activities in a confectionary company
Authors: Rapp Cecilia , Eklund Jörgen 
Published: December 2006

AbstractAlthough the use of continuous improvement (CI) is widespread today, many organizations face problems maintaining high and sustained employee involvement in such programs. The purpose of this study was to identify factors influencing employee involvement in submitting suggestions within a suggestion system in a Swedish production company. The company had maintained a successful suggestion system for about 10 years. The study builds on a database containing all the suggestions submitted (2343 in number) within the suggestion system. The following factors were identified to influence employee involvement in submitting suggestions and hence the sustainability of the suggestion system as well: (a) Situations when the employees had a personal benefit from submitting suggestions, e.g., concerning their own work environment, contributed to long‐term sustainability of the system; (b) campaigns emphasizing different themes encouraged employees to become more active within the suggestion system; (c) employees having some of their suggestions rejected were more active in submitting suggestions than employees having most suggestions rejected or accepted; (d) a high monetary reward (80 euros and above) was not found favorable for submitting new suggestions, compared to lower rewards; (e) increased support of group suggestions contributed to a sustained and high level of activity of the suggestion system. © 2007 Wiley Periodicals, Inc. Hum Factors Man 17: 79–94, 2007.
CFD analysis of a high‐speed unsteady jet
Authors: Kawanabe Hiroshi , Naito Yusuke , Kosaka Hidemasa , Shioji Masahiro 
Published: December 2006

AbstractThe flow of a high‐speed unsteady jet is analyzed using computational fluid dynamics for an incompressible flow with the k–ε turbulence model. The pseudo‐nozzle concept is applied to the inlet condition with a large pressure gradient. The results show that the time history of the jet development agrees with the experimental data for methane and hydrogen fuels. In addition, the effect of the injection condition on the development of the jet tip is well described with this model. Furthermore, the effects of inlet conditions of the turbulence intensity and scale on the flow are investigated. © 2006 Wiley Periodicals, Inc. Heat Trans Asian Res, 36(1): 1– 12, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.20141
A validated fast algorithm for simulation of flooding events in plains
Authors: Dalponte D. , Rinaldi P. , Cazenave G. , Usunoff E. , Vives L. , Varni M. , Vénere M. , Clausse A. 
Published: December 2006

AbstractHydrological modelling in large plains is not a straightforward task owing to the crucial influence of several elements, namely, accumulation of water on local depressions, absence of an integrated drainage network, generalized meagre surface slopes, strong sensitivity of the soil water content before rainfall events, and variation of the soil infiltration capacity with numerous transient and local factors. It would then appear that distributed hydrological models (DHM) are prone to produce better results than lumped‐parameter models. The trade‐off in setting up a DHM, however, is how realistic its results are as compared to its simplicity.This paper presents a physically based DHM, named AQUA, which can handle large domains discretized in squared cells of typically 80 m a side. In order to address properly the flow resistance, it relies on a relaxation parameter (α) with different values for the watercourses and the terrain. Likewise, an infiltration function (I) regulates the downward movement of water. Moreover, the model is supported by an adequate description of the gentle topographical features, which was achieved by a digital elevation model (DEM) from radar interferometry.The testing phase took into account the Santa Catalina Creek Basin (158 km2, centre Buenos Aires Province in Argentina). The results were quite encouraging, as the model was able to reproduce the effect of various rainfall scenarios. Sensitivity analyses of the model parameters were consistent with the actual simulation results. AQUA was tested against the well‐known HEC‐1 model, with a fairly good match of their results. Copyright © 2006 John Wiley & Sons, Ltd.
A new baseflow separation method based on analytical solutions of the Horton infiltration capacity curve
Authors: Lin Kairong , Guo Shenglian , Zhang Wenhua , Liu Pan 
Published: December 2006

AbstractThe separation of baseflow is an important issue in hydrology. The objective of this paper is to develop a new baseflow separation method based on the Horton infiltration capacity curve. For this purpose, the mathematical expressions of three parameters for the Horton infiltration capacity curve were derived in terms of rainfall and runoff data, and the lag time of the effective rainfall in the unsaturated zone and the groundwater flow routing equation are also presented. With these equations, the baseflow hydrographs at the outlet of the basin can be separated. The flow chart of the proposed method for baseflow hydrograph separation is given. Three recent baseflow separation methods, i.e. digital filter, non‐linear reservoir and the Boussinesq equation, were chosen as parallel schemes to compare with the proposed method. Rainfall‐runoff data from four watersheds located in different climatic regions in China were selected and used as case studies. Test and application results indicate that the proposed baseflow hydrograph separation method is in accordance with the hydrological physical process. The proposed method is comparable with current available methods and reduces some of the subjective aspects for the rising limb of the baseflow hydrograph, and it is useful for unit hydrograph analysis and for the study of the rainfall‐runoff relationship. Copyright © 2006 John Wiley & Sons, Ltd.
Parenting and self‐regulation in preschoolers: a meta‐analysis
Authors: Karreman Annemiek , van Tuijl Cathy , van Aken Marcel A. G. , Deković Maja 
Published: December 2006

AbstractA meta‐analysis of 41 studies was conducted to examine the strength of the relation between parenting (positive control, negative control and responsiveness) and self‐regulation in preschoolers. Results revealed significant associations between both types of parental control and self‐regulation, with effect sizes being small in magnitude. There was no significant association between self‐regulation and responsiveness. The strength of the association between parenting and self‐regulation varied with different conceptualizations of self‐regulation; positive and negative control were associated with child compliance, but not with inhibition and emotion regulation. Copyright © 2006 John Wiley & Sons, Ltd.
Emotions and self‐esteem as indicators of somatic complaints in children
Authors: Terwogt Mark Meerum , Rieffe Carolien , Miers Anne C. , Jellesma Francine C. , Tolland Abigail 
Published: December 2006

AbstractThe literature on somatic complaints in children without a clear physical medical cause often demonstrates connections with various psychological factors, such as negative emotions and problems handling them, poor self‐image, and coping potential. We entered these elements into a structural model to elucidate the relationships among them and tested it on 330 children (mean age 10 years and 9 months). The results showed that mood balance contributed most to the prediction of self‐reported somatic complaints. Moreover, mood (in combination with anxiety and depression problems) had an indirect impact on children's somatic complaints by influencing self‐esteem. The influence and position of coping was less clear. The results are discussed in terms of the ‘symptom perception theory’. Copyright © 2006 John Wiley & Sons, Ltd.
Growth mixture modelling in developmental psychology: overview and demonstration of heterogeneity in developmental trajectories of adolescent antisocial behaviour
Authors: Connell Arin M. , Frye Alice A. 
Published: December 2006

AbstractRecent advances in statistical techniques for longitudinal data analysis have provided increased capabilities for elucidating individual differences in trajectories of change in child behaviours and abilities. However, most techniques still assume that there is a single underlying distribution with respect to changes over time, about which children are normally distributed. If there are multiple subgroups of youth following distinct developmental trajectories with unique predictors, however, the results of these statistical techniques may provide an incomplete analysis of the data. A newer class of statistical techniques, latent growth mixture modelling, provides a robust framework for examining heterogeneity in patterns of development. This paper illustrates the use of latent growth mixture modelling for examining heterogeneity in developmental trajectories of adolescent antisocial behaviour. Copyright © 2006 John Wiley & Sons, Ltd.
Sensitivity of magnetic resonance imaging of dendritic cells for in vivo tracking of cellular cancer vaccines
Authors: Verdijk Pauline , Scheenen Tom W.J. , Lesterhuis W. Joost , Gambarota Giulio , Veltien Andor A. , Walczak Piotr , Scharenborg Nicole M. , Bulte Jeff W.M. , Punt Cornelis J.A. , Heerschap Arend , Figdor Carl G. , M. de Vries I. Jolanda 
Published: December 2006

AbstractSuccess of immunotherapy with dendritic cells (DC) to treat cancer is highly dependent on their interaction with and activation of antigen specific T cells. To maximize DC–T cell contact accurate delivery of the therapeutic cells into the lymph node, or efficient trafficking of DC to the lymph nodes of the patient is essential. Since responses are seen in some patients but not in others, monitoring of the injected cells may be of major importance. Tracking of cells with magnetic resonance (MR) imaging is a non‐invasive method that provides detailed anatomical information and is therefore more informative for the evaluation of the localization of therapeutic cells after injection than e.g. scintigraphic imaging. To challenge the sensitivity of this novel technique, we investigated the minimum amount of label and the number of cells required for MR imaging and the effect of labeling on DC function. DC were labeled with different concentrations of a clinically approved MR contrast agent consisting of superparamagnetic iron oxide particles and were imaged at both 3 and 7 T. Our results demonstrate the following: (i) When loaded with 30 (±4) pg Fe/cell, cell numbers as low as 1,000 cells/mm3 at 3 T and 500 cells/mm3 at 7 T could be readily imaged; (ii) Labeling does not affect cell viability and function; (iii) Because of its high spatial resolution and sensitivity, MRI is ideally suited to track therapeutic cells in vivo. © 2006 Wiley‐Liss, Inc.