bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of the number of vortices on the torque scaling in Taylor–Couette flow
Authors: Martínez-Arias B. , Peixinho J. , Crumeyrolle O. , Mutabazi I. 
Published: May 2014

AbstractTorque measurements in Taylor–Couette flow, with large radius ratio and large aspect ratio, over a range of velocities up to a Reynolds number of 24 000 are presented. Following a specific procedure, nine states with distinct numbers of vortices along the axis were found and the aspect ratios of the vortices were measured. The relationship between the speed and the torque for a given number of vortices is reported. In the turbulent Taylor vortex flow regime, at relatively high Reynolds number, a change in behaviour is observed corresponding to intersections of the torque–speed curves for different states. Before each intersection, the torque for a state with a larger number of vortices is higher. After each intersection, the torque for a state with a larger number of vortices is lower. The exponent, from the scaling laws of the torque, always depends on the aspect ratio of the vortices. When the Reynolds number is rescaled using the mean aspect ratio of the vortices, only a partial collapse of the exponent data is found.
Consequences of self-preservation on the axis of a turbulent round jet
Authors: Thiesset F. , Antonia R. A. , Djenidi L. 
Published: May 2014

AbstractOn the basis of a two-point similarity analysis, the well-known power-law variations for the mean kinetic energy dissipation rate $\overline{\epsilon }$ and the longitudinal velocity variance $\overline{u^2}$ on the axis of a round jet are derived. In particular, the prefactor for $\overline{\epsilon } \propto (x-x_0)^{-4}$, where $x_0$ is a virtual origin, follows immediately from the variation of the mean velocity, the constancy of the local turbulent intensity and the ratio between the axial and transverse velocity variance. Second, the limit at small separations of the two-point budget equation yields an exact relation illustrating the equilibrium between the skewness of the longitudinal velocity derivative $S$ and the destruction coefficient $G$ of enstrophy. By comparing the latter relation with that for homogeneous isotropic decaying turbulence, it is shown that the approach towards the asymptotic state at infinite Reynolds number of $S+2G/R_{\lambda }$ in the jet differs from that in purely decaying turbulence, although $S+2G/R_{\lambda } \propto R_{\lambda }^{-1}$ in each case. This suggests that, at finite Reynolds numbers, the transport equation for $\overline{\epsilon }$ imposes a fundamental constraint on the balance between $S$ and $G$ that depends on the type of large-scale forcing and may thus differ from flow to flow. This questions the conjecture that $S$ and $G$ follow a universal evolution with $R_{\lambda }$; instead, $S$ and $G$ must be tested separately in each flow. The implication for the constant $C_{\epsilon 2}$ in the $k-\overline{\epsilon }$ model is also discussed.
Fibre digestibility, abundance of faecal bacteria and plasma acetate concentrations in overweight adult mares
Authors: Shepherd Megan L. , Ponder Monica A. , Burk Amy O. , Milton Stewart C. , Swecker William S. 
Published: May 2014

AbstractThe purpose of the present study was to compare digestibility of grass hay, faecal and plasma volatile fatty acid (VFA) concentrations, and faecal bacterial abundance in overweight and moderate-condition mares. Five overweight adult mixed-breed mares and five adult mixed-breed mares in moderate condition were housed individually and limit-fed orchard grass (Dactylis glomerata) hay at 20 g/kg body weight (as fed) daily for 14 d. Forage DM and fibre digestibility were determined using AOAC methods; digestible energy was measured using bomb calorimetry; plasma and faecal VFA concentrations were determined by use of GC and MS; faecal Firmicutes, Bacteroidetes,Fibrobacter succinogenes,Ruminococcus flavefaciensand total bacteria abundance was determined by quantitative real-time PCR using previously designed phylum-specific 16S ribosomal RNA gene primers. No differences in hay digestibility, faecal VFA concentrations or faecal bacterial abundance were detected between overweight and moderate-condition mares. Mean plasma acetate concentrations were higher (P = 0·03) in overweight (1·55 (range 1·43–1·65) mmol/l)v.moderate-condition (1·39 (range 1·22–1·47) mmol/l) mares. We conclude that the higher plasma acetate in overweight mares should be further investigated as a potential link between gut microbes and obesity in horses.
Brickworks of Ipswich, Queensland
Authors: Richards Jonathan 
Published: May 2014

Patrick Buckridge was my teacher when I was an undergraduate student at Griffith University. One year, curator Susan Ostling asked him whether any students were interested in local history research. I volunteered, and Patrick agreed to assess the historical report that I produced. My task was to research and compile, as comprehensively as I could in the time available, a history of the ceramics industry in Ipswich.
Auxin production by the plant trypanosomatidPhytomonas serpensand auxin homoeostasis in infected tomato fruits
Authors: IENNE SUSAN , FRESCHI LUCIANO , VIDOTTO VANESSA F. , DE SOUZA TIAGO A. , PURGATTO EDUARDO , ZINGALES BIANCA 
Published: May 2014

SUMMARYPreviously we have characterized the complete gene encoding a pyruvate decarboxylase (PDC)/indolepyruvate decarboxylase (IPDC) ofPhytomonas serpens, a trypanosomatid highly abundant in tomato fruits. Phylogenetic analyses indicated that the clade that contains the trypanosomatid protein behaves as a sister group of IPDCs ofγ-proteobacteria. Since IPDCs are key enzymes in the biosynthesis of the plant hormone indole-3-acetic acid (IAA), the ability for IAA production byP. serpenswas investigated. Similar to many microorganisms, the production of IAA and related indolic compounds, quantified by high performance liquid chromatography, increased inP. serpensmedia in response to amounts of tryptophan. The auxin functionality was confirmed in the hypocotyl elongation assay. In tomato fruits inoculated withP. serpensthe concentration of free IAA had no significant variation, whereas increased levels of IAA-amide and IAA-ester conjugates were observed. The data suggest that the auxin produced by the flagellate is converted to IAA conjugates, keeping unaltered the concentration of free IAA. Ethanol also accumulated inP. serpens-conditioned media, as the result of a PDC activity. In the article we discuss the hypothesis of the bifunctionality ofP. serpensPDC/IPDC and provide a three-dimensional model of the enzyme.
HEALTH TECHNOLOGY ASSESSMENT OF MEDICINES IN GREECE: PHARMACEUTICAL INDUSTRY EXECUTIVES' VIEWS
Authors: Armataki Eleni , Karampli Eleftheria , Kyriopoulos John , Pavi Elpida 
Published: May 2014

Objectives: The aim of this study was to investigate originator pharmaceutical companies’ practices in relation to health technology assessment (HTA) and the views and perceptions of their executives on the importance of HTA in pricing and reimbursement of medicines in Greece.Methods: A qualitative study was performed, using individual semi-structured interviews based on an interview schedule with open-ended questions. The target population was market access departments’ executives of originator pharmaceutical companies. Our target sample consisted of sixteen executives, of whom ten agreed to participate. Saturation point was reached after eight interviews. Data were audio recorded, transcribed verbatim, and analyzed using content analysis.Results: Participants considered HTA as a very important complementary tool for decision making in health policy, particularly in the field of pharmaceuticals and medical devices. They believed that, in Greece, HTA could be institutionalized for the reimbursement mechanism of medicines under certain conditions relating to current health policy-making attitudes and conditions pertaining in the country. They considered that there are many constraints which must be overcome as well as opportunities to be exploited.Conclusions: Decisions in pharmaceutical policy should be scientifically substantiated and HTA should be institutionalized primarily for reimbursement decisions. Development of guidelines for conducting pharmaco-economic evaluation, change in health policy goals, recording of cost and epidemiological data, and broader participation of all stakeholders in HTA decision-making processes are suggested as prerequisites for a successful implementation of HTA in Greece.
The impact of the media on the decision of parents in South Wales to accept measles-mumps-rubella (MMR) immunization
Authors: WALSH S. , THOMAS D. Rh. , MASON B. W. , EVANS M. R. 
Published: May 2014

SUMMARYA large measles outbreak occurred in South Wales in 2012/2013. The outbreak has been attributed to low take-up of measles-mumps-rubella (MMR) immunization in the early 2000s. To understand better the factors that led to this outbreak we present the findings of a case-control study carried out in the outbreak area in 2001 to investigate parents' decision on whether to accept MMR. Parents who decided not to take-up MMR at the time were more likely to be older and better educated, more likely to report being influenced by newspapers [adjusted odds ratio (aOR) 3·07, 95% confidence interval (CI) 1·62–5·80], television (aOR 3·30, 95% CI 1·70–6·43), the internet (aOR 7·23, 3·26–16·06) and vaccine pressure groups (aOR 5·20, 95% CI 2·22–12·16), and less likely to be influenced by a health visitor (aOR 0·30, 95% CI 0·16–0·57). In this area of Wales, daily English-language regional newspapers, UK news programmes and the internet appeared to have a powerful negative influence. We consider the relevance of these findings to the epidemiology of the outbreak and the subsequent public health response.
Shiga toxin-producingE. coli(STEC) in swine: prevalence over the finishing period and characteristics of the STEC isolates
Authors: TSENG M. , FRATAMICO P. M. , BAGI L. , MANZINGER D. , FUNK J. A. 
Published: May 2014

SUMMARYThis descriptive longitudinal study was conducted to investigate the faecal shedding of Shiga toxin-producingE. coli(STEC) in finishing swine and to characterize the swine STEC isolates that were recovered. Three cohorts of finishing swine (n = 50/cohort; total 150 pigs) were included in the longitudinal study. Individual faecal samples were collected every 2 weeks (8 collections/pig) from the beginning (pig age 10 weeks) to the end (pig age 24 weeks) of the finishing period. STEC isolates were recovered in at least one sample from 65·3% (98/150) of the pigs, and the frequency distribution of first-time STEC detection during the finishing period resembled a point-source outbreak curve. Nineteen O:H serotypes were identified among the STEC isolates. Most STEC isolates (n = 148) belonged to serotype O59:H21 and carried thestx2egene. One O49:H21 STEC isolate carried thestx2eandeaegenes. High prevalence rates of STEC during the finishing period were observed, and STEC isolates in various non-O157 serogroups were recovered. These data enhance understanding of swine STEC epidemiology, and future research is needed to confirm whether or not swine STEC are of public health concern.
Differences in breast-feeding initiation and continuation by maternal diabetes status
Authors: Oza-Frank Reena , Chertok Ilana , Bartley Adam 
Published: May 2014

AbstractObjectiveTo examine (i) the prevalence of and associations between breast-feeding initiation and continuation by maternal diabetes status and (ii) the reasons for not initiating and/or continuing breast-feeding by maternal diabetes status.DesignSecondary data analyses of a population-based cross-sectional study were conducting using data from the US Centers for Disease Control and Prevention’s Pregnancy Risk Assessment Monitoring System (PRAMS), 2009–2011. Multivariable logistic regression was used to investigate the associations between breast-feeding initiation and continuation by diabetes status.SettingThirty states and New York City, USA.SubjectsMothers of recently live-born infants, selected by birth certificate sampling.ResultsAmong 72755 women, 8·8 % had gestational diabetes mellitus (GDM) and 1·7 % had pregestational diabetes mellitus (PDM). Breast-feeding initiation was similar among GDM and no diabetes mellitus (NDM) women (80·8 % v. 82·2 %, respectively, P=0·2), but continuation was lower among GDM (65·7 % v. 68·8 %, respectively, P=0·01). PDM women had lower initiation and continuation compared with NDM (78·2 %, P=0·03 and 60·4 %, P<0·01, respectively). In adjusted analyses, current smoking status was a significant effect modifier for initiation, but not for continuation.ConclusionsDifferences in breast-feeding initiation and continuation prevalence by maternal diabetes status may reflect differences in prenatal education, indicating the need for increased efforts among PDM women. Additionally, non-smoking women with PDM or GDM would benefit from additional breast-feeding education.
Product formula forp-adic epsilon factors
Authors: Abe Tomoyuki , Marmora Adriano 
Published: May 2014

AbstractLet$X$be a smooth proper curve over a finite field of characteristic$p$. We prove a product formula for$p$-adic epsilon factors of arithmetic$\mathscr{D}$-modules on$X$. In particular we deduce the analogous formula for overconvergent$F$-isocrystals, which was conjectured previously. The$p$-adic product formula is a counterpart in rigid cohomology of the Deligne–Laumon formula for epsilon factors in$\ell$-adic étale cohomology (for$\ell \neq p$). One of the main tools in the proof of this$p$-adic formula is a theorem of regular stationary phase for arithmetic$\mathscr{D}$-modules that we prove by microlocal techniques.
A yield-macro model for actuarial use in the United Kingdom
Authors: Şahin Şule , Cairns Andrew J.G. , Kleinow Torsten , Wilkie A. David 
Published: May 2014

AbstractWe construct yield curve models for the UK nominal, real and implied inflation spot rates considering the linkage between their term structures and some macroeconomic variables, in particular, realised inflation and real GDP growth. The paper extends the benchmark “yield-only” model proposed by Şahin et al. (2014) by exploring the bidirectional relations between the yield curve factors and the macroeconomic variables and proposes a “yield-macro” model. Although a simple autoregressive order one process fits the yield curve factors quite well the insertion of some macroeconomic variables such as realised inflation and real GDP growth improves the models significantly. We also model macroeconomic variables that take the term structures into account and compare the yield-macro model with Wilkie’s model both philosophically and empirically.
Do Thoughts Have Sound? Differences between Thoughts and Auditory Hallucinations in Schizophrenia
Authors: Cuevas-Yust Carlos 
Published: May 2014

AbstractCognitive theories about auditory hallucinations maintain that inner speech is erroneously interpreted as coming from an external source. Few first-hand accounts of patients’ experiences have been made, so there is limited knowledge of the process through which patients distinguish their auditory verbal hallucinations (AVHs) from ordinary thoughts. 89 individuals diagnosed with schizophrenia, some experiencing acute hallucinatory symptomatology (Sz-AVHs) and some who were not (Sz-noAVHs), were assessed along with 48 individuals from the general population using the Auditory Hallucinations Assessment Questionnaire (AHAQ; Cuevas-Yust, Rodríguez Martín, Ductor Recuerda, Salas Azcona, & León Gómez, 2006). TheSchz-AVHsgroup reported hearing ordinary thoughts at the same volume as their auditory hallucinations (p =.53) and spoken words (p =.89). In contrast, theSz-noAVHsand general population samples reported hearing spoken words louder than their own thoughts (p =.002;p =.04). In comparison to these last two groups, theSz-AVHsgroup described the sound of their thoughts as louder. These findings are consistent with the cognitive hypothesis of auditory verbal hallucinations. Confusion identifying the source of auditory hallucinations could be due, in part, to “hearing” one’s thoughts at the same volume as auditory hallucinations and spoken words.
Rhythmic oscillations of the microRNA miR-96-5p play a neuroprotective role by indirectly regulating glutathione levels
Authors: Kinoshita Chisato , Aoyama Koji , Matsumura Nobuko , Kikuchi-Utsumi Kazue , Watabe Masahiko , Nakaki Toshio 
Published: May 2014

AbstractGlutathione (GSH) is a key antioxidant that plays an important neuroprotective role in the brain. Decreased GSH levels are associated with neurodegenerative diseases such as Parkinson’s disease and Alzheimer’s disease. Here we show that a diurnal fluctuation of GSH levels is correlated with neuroprotective activity against oxidative stress in dopaminergic cells. In addition, we found that the cysteine transporter excitatory amino acid carrier 1 (EAAC1), which is involved in neuronal GSH synthesis, is negatively regulated by the microRNA miR-96-5p, which exhibits a diurnal rhythm. Blocking miR-96-5p by intracerebroventricular administration of an inhibitor increased the level of EAAC1 as well as that of GSH and had a neuroprotective effect against oxidative stress in the mouse substantia nigra. Our results suggest that the diurnal rhythm of miR-96-5p may play a role in neuroprotection by regulating neuronal GSH levels via EAAC1.
Quantitatively estimating defects in graphene devices using discharge current analysis method
Authors: Jung Ukjin , Lee Young Gon , Kang Chang Goo , Lee Sangchul , Kim Jin Ju , Hwang Hyeon June , Lim Sung Kwan , Ham Moon-Ho , Lee Byoung Hun 
Published: May 2014

AbstractDefects of graphene are the most important concern for the successful applications of graphene since they affect device performance significantly. However, once the graphene is integrated in the device structures, the quality of graphene and surrounding environment could only be assessed using indirect information such as hysteresis, mobility and drive current. Here we develop a discharge current analysis method to measure the quality of graphene integrated in a field effect transistor structure by analyzing the discharge current and examine its validity using various device structures. The density of charging sites affecting the performance of graphene field effect transistor obtained using the discharge current analysis method was on the order of 1014/cm2, which closely correlates with the intensity ratio of the D to G bands in Raman spectroscopy. The graphene FETs fabricated on poly(ethylene naphthalate) (PEN) are found to have a lower density of charging sites than those on SiO2/Si substrate, mainly due to reduced interfacial interaction between the graphene and the PEN. This method can be an indispensable means to improve the stability of devices using a graphene as it provides an accurate and quantitative way to define the quality of graphene after the device fabrication.
Conceptual Scoring of Receptive and Expressive Vocabulary Measures in Simultaneous and Sequential Bilingual Children
Authors: Gross Megan , Buac Milijana , Kaushanskaya Margarita 
Published: May 2014

PurposeThe authors examined the effects of conceptual scoring on the performance of simultaneous and sequential bilinguals on standardized receptive and expressive vocabulary measures in English and Spanish.MethodParticipants included 40 English-speaking monolingual children, 39 simultaneous Spanish–English bilingual children, and 19 sequential bilingual children, ages 5–7. The children completed standardized receptive and expressive vocabulary measures in English and also in Spanish for those who were bilingual. After the standardized administration, bilingual children were given the opportunity to respond to missed items in their other language to obtain a conceptual score.ResultsControlling for group differences in socioeconomic status (SES), both simultaneous and sequential bilingual children scored significantly below monolingual children on single-language measures of English receptive and expressive vocabulary. Conceptual scoring removed the significant difference between monolingual and simultaneous bilingual children in the receptive modality but not in the expressive modality; differences remained between monolingual and sequential bilingual children in both modalities. However, in both bilingual groups, conceptual scoring increased the proportion of children with vocabulary scores within the average range.ConclusionConceptual scoring does not fully ameliorate the bias inherent in single-language standardized vocabulary measures for bilingual children, but the procedures employed here may assist in ruling out vocabulary deficits, particularly in typically developing simultaneous bilingual children.
Thermoelectric performance of various benzo-difuran wires
Authors: Péterfalvi Csaba G. , Grace Iain , Manrique Dávid Zs. , Lambert Colin J. 
Published: May 2014

Using a first principles approach to electron transport, we calculate the electrical and thermoelectrical transport properties of a series of molecular wires containing benzo-difuran subunits. We demonstrate that the side groups introduce Fano resonances, the energy of which is changing with the electronegativity of selected atoms in it. We also study the relative effect of single, double, or triple bonds along the molecular backbone and find that single bonds yield the highest thermopower, approximately 22 μV/K at room temperature, which is comparable with the highest measured values for single-molecule thermopower reported to date.
Simultaneous assessment of the macrobiome and microbiome in a bulk sample of tropical arthropods through DNA metasystematics
Authors: Gibson Joel , Shokralla Shadi , Porter Teresita M. , King Ian , van Konynenburg Steven , Janzen Daniel H. , Hallwachs Winnie , Hajibabaei Mehrdad 
Published: May 2014

Significance
Ecological and evolutionary investigations require accurate and high-resolution biodiversity information. Conventional morphological approaches to identifying species in species-rich tropical ecosystems are often unavailable or incapable of timely, cost-effective identification. We show that next-generation sequencing (NGS) of cytochrome c oxidase subunit I (COI) DNA barcodes can accurately detect 83.5% of individually sequenced species (corresponding to 91% of individuals) in a bulk sample of terrestrial arthropods from a Costa Rican species-rich site. Additionally, the 16S and 18S ribosomal DNA gene regions obtained also provide an assessment of the bacteria and protozoa in the bulk sample. This metasystematic approach provides the initial infrastructure for a next generation of biodiversity assessment and environmental monitoring. It can lead to more effective understanding, appreciation, and management of complex ecosystems.
A Comparison of Environmental Contamination by Patients Infected or Colonized with Methicillin-Resistant Staphylococcus aureus or Vancomycin-Resistant Enterococci: A Multicenter Study
Authors: Knelson Lauren P. , Williams David A. , Gergen Maria F. , Rutala William A. , Weber David J. , Sexton Daniel J. , Anderson Deverick J. ,   on behalf of the Centers for Disease Control and Prevention Epicenters Program
Published: May 2014

A total of 1,023 environmental surfaces were sampled from 45 rooms with patients infected or colonized with methicillin-resistant Staphylococcus aureus (MRSA) or vancomycin-resistant enterococci (VRE) before terminal room cleaning. Colonized patients had higher median total target colony-forming units (CFU) of MRSA or VRE than did infected patients (median, 25 CFU [interquartile range, 0–106 CFU] vs 0 CFU [interquartile range, 0–29 CFU]; P = .033).Infect Control Hosp Epidemiol 2014;35(7):872–875