bluuebunny/crossref_metadata_2025_split huggingface dataset:
The PLVC display color characterization model revisited
Authors: Thomas Jean‐Baptiste , Hardeberg Jon Y. , Foucherot Irène , Gouton Pierre 
Published: October 2008

AbstractThis work proposes a study of the Piecewise Linear assuming Variation in Chromaticity (PLVC) display color characterization model. This model has not been widely used as the improved accuracy compared with the more common PLCC (Piecewise Linear assuming Chromaticity Constancy) model is not significant for CRT (Cathode Ray Tube) display technology, and it requires more computing power than this model. With today's computers, computational complexity is less of a problem, and today's display technologies show a different colorimetric behavior than CRTs. The main contribution of this work is to generalize the PLVC model to multiprimary displays and to provide extensive experimental results and analysis for today's display technologies. We confirm and extend the results found in the literature and compare this model with classical PLCC and Gain‐Offset‐Gamma‐Offset models. We show that using this model is highly beneficial for Liquid Crystal Displays, reducing the average error about a third for the two tested LCD projectors compared with a black corrected PLCC model, from 3.93 and 1.78 to respectively 1.41 and 0.54 ΔE units. © 2008 Wiley Periodicals, Inc. Col Res Appl, 33, 449–460, 2008
Experimental object color unique hue data for the mean observer for color appearance modeling
Authors: Kuehni Rolf , Hinks David , Shamey Renzo 
Published: October 2008

AbstractColor appearance models, among other things, predict the hue of a stimulus when compared with defined stimuli that represent the four unique hues. Recent studies have indicated that the stimuli representing with high reliability unique hue (UH) percepts vary widely for different color‐normal observers. The average yellow and blue UH stimuli for 102 observers, as determined in a recent experiment at medium chroma, differ considerably from the CIECAM02 defined unique hues, based on the Swedish NCS. Wide inter‐observer variability precludes color appearance models from accurately predicting, for individual observers, all four unique hue stimuli. However, models should predict accurately those of a well‐defined average observer. © 2008 Wiley Periodicals, Inc. Col Res Appl, 33, 505–506, 2008
Psychometric characteristics of the Penn State Worry Questionnaire and Metacognitions Questionnaire‐30 and metacognitive predictors of worry and obsessive–compulsive symptoms in a Turkish sample
Authors: Yılmaz A. Esin , Gençöz Tülin , Wells Adrian 
Published: October 2008

AbstractThe purpose of the present study was twofold. First, to examine the psychometric properties of the Penn State Worry Questionnaire (PSWQ) and the Metacognitions Questionnaire‐30 (MCQ‐30) in a Turkish sample. Second, to investigate metacognitive predictors of pathological worry and obsessive–compulsive (o–c) symptoms in this group. The sample included 561 non‐clinical participants. Consistent with non‐English versions, the Turkish version of the PSWQ was found to have a two‐factor structure. The MCQ‐30 was shown to be composed of five factors similar to the English version. Reliability analyses indicated that both the PSWQ and MCQ‐30 possessed high internal consistency, split‐half reliability and test–retest coefficients. As expected, both scales positively correlated with measures of o–c symptoms, trait anxiety, and anxiety and depression, as well as with each other. Negative and positive metacognitive beliefs about worry were significant predictors of both pathological worry and o–c symptoms. Cognitive confidence emerged as a specific predictor of worry, while beliefs about the need to control thoughts emerged as a unique predictor of o–c symptoms. Copyright © 2008 John Wiley & Sons, Ltd.
Novel synthetic alkali‐yttrium silicates with a new microporous mixed framework topology: (Rb,Cs)9Y7Si24O63 and isotypic Rb9Y7Si24O63
Authors: Wierzbicka‐Wieczorek M. , Kolitsch U. , Tillmanns E. 
Published: October 2008

AbstractPrismatic colourless crystals of the two novel, isotypic title compounds were obtained by the flux growth technique. The crystal structures have been determined from single‐crystal intensity data in space group R 3 with a = 28.819(4) / 28.799(4), c = 13.916(3) / 13.864(3) Å, V = 10009(3) / 9958(3) Å3, Z = 6, R (F) = 4.99 / 6.44%, respectively. They represent a novel structure type with microporous character. The framework is built from six‐membered silicate rings (approximate UDUDUD orientation) containing isolated YO6 octahedra and compressed “six‐membered rings”, which in fact build a spiral of corner‐sharing SiO4 tetrahedra. Approximately parallel to [111] run two different irregular channels hosting the Rb/Cs and Rb atoms. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Thermal “order‐disorder” behaviour in (Na1‐xKx)4B8O14 solid solutions investigated by X‐ray powder diffraction
Authors: Georgievskaya M. , Albert B. , Bubnova R. , Cordier G. , Bähtz C. , Filatov S. 
Published: October 2008

AbstractIn the potassium‐rich part of the binary system Na4B8O14‐K4B8O14 solid solutions have been found that can be described with the formula (Na1‐xKx)4B8O14 with 0.45 ≤ x < 1.0. The crystal structures of (Na0.25K0.75)4B8O14 and (Na0.45K0.55)4B8O14 were refined at room temperature by the Rietveld method. The solid solutions crystallize like K4B8O14 in the triclinic crystal system, space group P ‐1, with K partially substituted for Na. An ordered distribution of the alkali atoms over the four cation sites at room temperature has been discovered. The structure of (Na0.25K0.75)4B8O14 was also refined for data collected at 300 and 500 °C. The refinements show that sodium and potassium atoms are less ordered at higher temperatures. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Infrared and Raman spectroscopy of mullite‐type Bi2Ga4O9
Authors: Beran A. , Libowitzky E. , Burianek M. , Mühlberg M. , Pecharromán C. , Schneider H. 
Published: October 2008

AbstractMullite‐type Bi2Ga4O9 single‐crystals were grown by the top‐seeded solution growth (TSSG) method and investigated by vibrational spectroscopy. Polarised IR specular reflectance and attenuated total reflectance (ATR) spectra, as well as polarised micro‐Raman spectra were acquired at room temperature. Powder IR spectra of sol‐gel‐derived samples were also recorded. Using model calculations and comparison to other mullite‐type compounds, bands at ∼ 850 – 400 cm‐1 could be assigned to stretching and bending vibrations of the structural GaO4 and GaO6 units. Low‐energetic modes were attributed to motions involving Bi atoms. The IR spectra of Bi2Ga4O9 display close similarities to those of the mullite‐type alkali gallates (9Ga2O3 · Rb2O), while their differences to those of mullite sensu stricto (3Al2O3 · 2SiO2 and 2Al2O3 · SiO2, repectively) are assigned to Si‐O stretching vibrations of the corresponding tetrahedral units. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Recovery of Enlarged Olefin Metathesis Catalysts by Nanofiltration in an Eco‐Friendly Solvent
Authors: Keraani Adel , Renouard Thierry , Fischmeister Cédric , Bruneau Christian , Rabiller‐Baudry Murielle 
Published: October 2008

AbstractThis study was aimed at integrating a green separation process without phase change, namely nanofiltration, with olefin metathesis to recover the homogeneous catalyst. As the commercially available Hoveyda II catalyst was not sufficiently retained by the membrane, a set of homogeneous ruthenium‐based catalysts were prepared to enhance the recovery of the catalyst by solvent‐resistant commercial membranes made of polyimide (Starmem 228). The molecular weights of the catalysts were gradually increased from 627 to 2195 g mol−1, and recovery was found to increase from around 70 % to 90 % both in toluene and dimethyl carbonate. The most retained catalyst was then engaged in a series of model ring‐closing metathesis reactions associated to a final nanofiltration step to recover and recycle the catalyst. Up to five cycles could be performed before a deterioration in the performance of the process was observed.
Chirality in Polyoxometalate Chemistry
Authors: Hasenknopf Bernold , Micoine Kévin , Lacôte Emmanuel , Thorimbert Serge , Malacria Max , Thouvenot René 
Published: October 2008

AbstractThe increasing use of polyoxometalates in the fields of material sciences, catalysis, and biology has raised the interest in chirality of such systems. This review provides a summary of the different strategies followed: i) chirality in solid‐state arrangements, ii) chiral polyoxometalate frameworks, and iii) chiral polyoxometalate–organic hybrids. Through the discussion of selected examples, an outline for future work is drawn. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
Anodic Stripping Voltammetric Detection of Arsenic(III) at Gold Nanoparticle‐Modified Glassy Carbon Electrodes Prepared by Electrodeposition in the Presence of Various Additives
Authors: Hossain Md. Motahar , Islam Md. Mominul , Ferdousi Sara , Okajima Takeyoshi , Ohsaka Takeo 
Published: October 2008

AbstractThe simple, fast and highly sensitive anodic stripping voltammetric detection of As(III) at a gold (Au) nanoparticle‐modified glassy carbon (GC) (nano‐Au/GC) electrode in HCl solution was extensively studied. The Au nanoparticles were electrodeposited onto GC electrode using chronocoulometric technique via a potential step from 1.1 to 0 V vs. Ag|AgCl|NaCl (sat.) in 0.5 M H2SO4 containing Na[AuCl4] in the presence of KI, KBr, Na2S and cysteine additives. Surfaces of the resulting nano‐Au/GC electrodes were characterized with cyclic voltammetry. The performances of the nano‐Au/GC electrodes, which were prepared using different concentrations of Na[AuCl4] (0.05–0.5 mM) and KI additive (0.01–1.0 mM) at various deposition times (10–30 s), for the voltammetric detection of As(III) were examined. After the optimization, a high sensitivity of 0.32 mA cm−2 μM−1 and detection limit of 0.024 μM (1.8 ppb) were obtained using linear sweep voltammetry.
4‐Aminothiophenol Self‐Assembled Monolayer for the Development of a DNA Biosensor Aiming the Detection of Cylindrospermopsin Producing Cyanobacteria
Authors: Valério Elisabete , Abrantes Luisa M. , Viana Ana S. 
Published: October 2008

AbstractThe development of a DNA biosensor for the detection of cylindrospermopsin, based on self‐assembled monolayers (SAMs) of 4‐aminothiophenol, is investigated. SAMs were characterized by electrochemical reductive desorption. Detection of probe immobilization and hybridization has been achieved by cyclic and square‐wave voltammetry (SWV), using methylene blue (MB) as electroactive indicator. The SWV data obtained in phosphate buffer, with and without NaCl, after MB accumulation, revealed an increase of the redox indicator current peaks after the hybridization step. This behavior is consistent with MB intercalation into DNA, for high ionic strength media and attributed to electrostatic interactions in the absence of salt. Evidence for surface modification is also provided by atomic force microscopy and ellipsometry.
Electrochemical Oxidation of Metolazone at a Glassy Carbon Electrode
Authors: Pontinha A. Dora R. , Oliveira S. Carlos B. , Oliveira‐Brett Ana Maria 
Published: October 2008

AbstractMetolazone is a diuretic agent used in patients with edematous states and/or hypertension. The electrochemical behavior of metolazone on a glassy carbon electrode was investigated using cyclic, differential pulse, and square‐wave voltammetry at different pHs. The pH dependent oxidation of metolazone occurs in two consecutive steps in a diffusion‐controlled mechanism and involves the formation of a main oxidation product. The first oxidation process is reversible, and involves two electrons and two protons corresponding to the oxidation of nitrogen in the sulfonamide moiety. The second oxidation process is irreversible, also occurs in the sulfonamide moiety, involves a one electron‐transfer, and is followed by deprotonation to produce a cation radical, which reacts with water and yields a hydroxylated product. The diffusion coefficient of metolazone was calculated to be 3.43×10−6 cm2 s−1 in pH 7.0 0.1 M phosphate buffer.
Generation of directional EOF by interactive oscillatory zeta potential
Authors: Kuo Chih‐Yu , Wang Chang‐Yi , Chang Chien‐Cheng 
Published: October 2008

AbstractA steady directional EOF due to a nonlinear interaction between oscillatory axial electrical fields and oscillatory wall potentials (zeta potentials) is presented. This is a new mechanism to produce such a mean flow. It is found that the flow velocity depends not on the external driving frequency but on the phase angle difference between the electric fields and the zeta potentials. The formulation can also be reduced to the static EOF straightforwardly. For the purpose of theoretical demonstration, we use the Debye–Huckel approximation for the zeta potential. Results of planar and cylindrical capillaries are given.
Multiplex detection and identification of proteins on a PVDF membrane blocked with a synthetic polymer‐based reagent
Authors: Kawasaki Hiroshi , Okayama Akiko , Iwafune Yuko , Yahagi Shota , Arakawa Noriaki , Hirano Hisashi 
Published: October 2008

Abstract2‐DE is one of the most powerful methods for analyzing proteins expressed in cells and tissues. Immunodetection of proteins blotted on a polymer membrane is the method of choice for detecting specific proteins in 2‐D gels. To precisely locate spots of immunoreactive proteins in 2‐D gels, both dye staining and immunodetection were performed on the same PVDF membrane. Prior to immunodetection, nonspecific adsorption of the antibodies to the membrane was blocked with a synthetic polymer‐based reagent (N‐102) after protein transfer. The protein was then stained with colloidal gold or CBB followed by protein spot identification by LC‐MS. Described herein is a method for multiplex analysis of proteins transferred to a PVDF membrane. Proteins that were phosphorylated at tyrosine in the phosphoproteome of rice callus or human ovarian cancer cells were detected by immunoblotting and subsequently identified with high precision.
An evaluation of European air pollution regulations for particulate matter monitored from a heterogeneous network
Authors: Sahu Sujit K. , Nicolis Orietta 
Published: October 2008

AbstractStatistical methods are needed for evaluating many aspects of air pollution regulations increasingly adopted by many different governments in the European Union. The atmospheric particulate matter (PM) is an important air pollutant for which regulations have been issued recently. A challenging task here is to evaluate the regulations based on data monitored on a heterogeneous network where PM has been observed at a number of sites and a surrogate has been observed at some other sites. This paper develops a hierarchical Bayesian joint space–time model for the PM measurements and its surrogate between which the exact relationship is unknown, and applies the methods to analyse spatio‐temporal data obtained from a number of sites in Northern Italy. The model is implemented using MCMC techniques and methods are developed to meet the regulatory demands. These enablefull inference with regard to process unknowns, calibration, validation, predictions in time and space and evaluation of regulatory standards. Copyright © 2008 John Wiley & Sons, Ltd.
Cross‐cultural differences in the macronutrient intakes of women with anorexia nervosa in Australia and Singapore
Authors: Soh Nerissa Li‐Wey , Touyz Stephen , Dobbins Timothy , Surgenor Lois , Clarke Simon , Kohn Michael , Lee Ee Lian , Leow Vincent , Rieger Elizabeth , Ung Ken Eng Khean , Walter Garry 
Published: October 2008

AbstractAimTo compare the macronutrient intakes of women with and without anorexia nervosa (AN) across cultures.MethodParticipants were women with AN (n = 39) and without AN (n = 89) of North European and East Asian backgrounds recruited in Australia and Singapore. Energy and the percentage energy contributed by protein (%protein), fat (%fat) and carbohydrate (%CHO) were assessed from participant's diet histories and analysed in terms of cultural group, acculturation, socio‐economic status (SES) and education level.ResultsAN status was associated with lower energy and higher %CHO. Greater %protein was associated with greater acculturation to Western culture and lower SES, but not AN. Greater %fat was associated with lower SES and lower acculturation in women with AN, but with higher acculturation in controls. Greater %CHO was also associated with higher SES.ConclusionThe findings may represent Western diets' higher protein and fat contents, ‘Western’ knowledge of weight‐loss diets, and affordability of low fat foods. Copyright © 2008 John Wiley & Sons, Ltd and Eating Disorders Association.
Analysis of the volatile constituents of cooked petai beans (Parkia speciosa) using high‐resolution GC/ToF–MS
Authors: Frérot Eric , Velluz Alain , Bagnoud Alain , Delort Estelle 
Published: October 2008

AbstractThe volatile compounds from cooked petai beans (Parkia speciosa) were isolated by hydrodistillation under reduced pressure followed by solvent extraction. The organic extract was analyzed by classical single quadrupole GC/MS and by high resolution GC/ToF‐MS. Cyclic polysulphides were the major components of petai. New sulphur minor compounds were also identified and some of them were synthesised. 1,3‐Dithiabutane was found for the first time in a natural product whereas 2,4‐dithiapentane, 2,3,5‐trithiahexane and 2,4,6‐trithiaheptane for the first time in Parkia speciosa. GC/O analyses showed that these linear polysulphides have an important contribution to the flavour of cooked petai beans. Copyright © 2008 John Wiley & Sons, Ltd.
White‐coat effect among older patients with suspected cognitive impairment: prevalence and clinical implications
Authors: Mario Bo , Massimiliano Massaia , Chiara Merlo , Alessandro Sona , Antonella Canadè , Gianfranco Fonte 
Published: October 2008

AbstractObjectivesTo evaluate the prevalence of white‐coat effect (WCE), and its association with individual anxiety and insight of disease, among older patients evaluated for suspected cognitive impairment.MethodsThis prospective cohort study, conducted in an Alzheimer Evaluation Unit, involved patients aged 55 years or older with suspected cognitive impairment. WCE was defined as a difference of at least 20 mmHg in systolic or 10 mmHg in diastolic blood pressure (BP) measured either by a physician during the visit or by a nurse (before and after the visit), compared with home self‐blood pressure measurement (SBPM). Severity of cognitive impairment was evaluated through the Mini‐Mental State Examination (MMSE); the Clinical Insight Rating Scale (CIR) and the Guidelines for the Rating for Awareness Deficits (GRAD) were used to evaluate the subject's insight; anxiety disorder was evaluated using the seven‐question Generalized Anxiety Disorder scale (GAD‐7).ResultsAmong 273 subjects, prevalence of WCE was 52%, 32.6% and 30.4%, according to physician and nurse BP measurements, respectively (p = 0.000). Prevalence of WCE did not differ between patients diagnosed with and without dementia, but was higher among patients with than in those without anxiety disorder (70.7% vs 38.2%, p = 0.000). Positive relations were observed between severity of anxiety and insight of disease, which were both inversely related with severity of coginitive impairment.ConclusionsWCE is extremely common and is correlated to individual anxiety and insight of disease among older outpatients with suspected cognitive impairment; overestimation of hypertension severity might lead to unnecessary drug treatment and greater health costs in this setting. Copyright © 2008 John Wiley & Sons, Ltd.
Contagious yawning and the frontal lobe: An fMRI study
Authors: Nahab Fatta B. , Hattori Noriaki , Saad Ziad S. , Hallett Mark 
Published: October 2008

AbstractWe conducted a slow event‐related fMRI experiment with naïve subjects' passively viewing yawn and various other control videos along with correlative behavioral testing. Specifically associated with the viewing of the contagious yawn was an area of activation in the ventromedial prefrontal cortex. These findings suggest a role for the prefrontal cortex in the processing of contagious yawning, while demonstrating a unique automaticity in the processing of contagious motor programs which take place independently of mirror neuron networks. Hum Brain Mapp 2009. © 2008 Wiley‐Liss, Inc.
Superoxide produced by Kupffer cells is an essential effector in concanavalin A–induced hepatitis in mice
Authors: Nakashima Hiroyuki , Kinoshita Manabu , Nakashima Masahiro , Habu Yoshiko , Shono Satoshi , Uchida Takefumi , Shinomiya Nariyoshi , Seki Shuhji 
Published: October 2008

AbstractAlthough concanavalin A (Con-A)-induced experimental hepatitis is thought to be induced by activated T cells, natural killer T (NKT) cells, and cytokines, precise mechanisms are still unknown. In the current study, we investigated the roles of Kupffer cells, NKT cells, FasL, tumor necrosis factor (TNF), and superoxide in Con-A hepatitis in C57BL/6 mice. Removal of Kupffer cells using gadolinium chloride (GdCl3) from the liver completely inhibited Con-A hepatitis, whereas increased serum TNF and IFN-γ levels were not inhibited at all. Unexpectedly, anti-FasL antibody pretreatment did not inhibit Con-A hepatitis, whereas it inhibited hepatic injury induced by a synthetic ligand of NKT cells, α-galactosylceramide. Furthermore, GdCl3 pretreatment changed neither the activation-induced down-regulation of NK1.1 antigens as well as T cell receptors of NKT cells nor the increased expression of the CD69 activation antigen of hepatic T cells. CD68+ Kupffer cells greatly increased in proportion in the early phase after Con-A injection; this increase was abrogated by GdCl3 pretreatment. Anti-TNF antibody (Ab) pretreatment did not inhibit the increase of Kupffer cells, but it effectively suppressed superoxide/reactive oxygen production from Kupffer cells and the resulting hepatic injury. Conversely, depletion of NKT cells in mice by NK1.1 Ab pretreatment did suppress both the increase of CD68+ Kupffer cells and Con-A hepatitis. Consistently, the diminution of oxygen radicals produced by Kupffer cells by use of free radical scavengers greatly inhibited Con-A hepatitis without suppressing cytokine production. However, adoptive transfer experiments also indicate that a close interaction/cooperation of Kupffer cells with NKT cells is essential for Con-A hepatitis.Conclusion:Superoxide produced by Kupffer cells may be the essential effector in Con-A hepatitis, and TNF and NKT cells support their activation and superoxide production. (Hepatology 2008;48:1979-1988.)
Heat transfer enhancement of round impinging jet by orifice nozzle (Effects of contraction area ratio)
Authors: Kito Mizuki , Shakouchi Toshihiko , Sakamoto Tatsuji , Tsujimoto Koichi , Ando Toshitake 
Published: October 2008

AbstractThe effects of the nozzle contraction ratio on the flow and heat transfer characteristics of an orifice impinging jet were investigated in this experiment. The nozzle diameter was do=10.0 mm=const., and the contraction area ratio CR=(do/di)2, where di is the inner pipe diameter was varied from CR=1.00 to 0.11 and the nozzle‐plate distance was varied from H/do=2.0 to 5.0. The nozzle Reynolds number was Re=1.5×104=const. The flow characteristics were clarified by measuring the pressure and velocity distributions on the plate and flow visualization. The Nusselt number obtained from measuring the temperature distribution on the plate of an orifice impinging jet with a CR of 0.11 and 0.69 were respectively larger by 19% and 9% than those of a pipe impinging jet (CR=1.00), because the centerline velocity of the orifice jet was larger than that of the pipe jet. Under the same operation power, an orifice impinging jet has improved heat transfer characteristics. © 2008 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.20225