bluuebunny/crossref_metadata_2025_split huggingface dataset:
Les systèmes de traçabilité dans la filière vitivinicole
Authors: Baillette Paméla , Fallery Bernard , Rahali Naoual 
Published: April 2013

Cette recherche se situe dans le domaine vitivinicole où une cave coopérative constitue un réseau de TPE entre les producteurs adhérents.
Sous la pression du marché, des pouvoirs publics et de l’offre technologique, ces coopératives mettent en place des systèmes de traçabilité pour assurer la qualité et la sécurité des produits, mais aussi pour piloter leurs activités internes.
Les systèmes de traçabilité qui sont développés présentent alors une particularité : celle de créer une traçabilité au niveau de la coopérative et une traçabilité au niveau de la filière.
Compte tenu de l’hétérogénéité des acteurs et des technologies, cet article se fonde sur la théorie de l’acteur-réseau en tant que cadre d’analyse de la convergence à construire dans ces processus d’innovation.
Une étude en France auprès de six caves coopératives vitivinicoles montre alors les deux niveaux où s’organisent l’enrôlement des acteurs et la résolution des controverses. Entre les viticulteurs et les caves, la controverse « en amont » a porté sur le pilotage des activités et s’est soldée par une rationalisation au profit des caves. Entre les caves et la distribution, la controverse « en aval » porte sur le contrôle de qualité du produit et continue à se développer.
Nanoceria‐Triggered Synergetic Drug Release Based on CeO2‐Capped Mesoporous Silica Host–Guest Interactions and Switchable Enzymatic Activity and Cellular Effects of CeO2
Authors: Xu Can , Lin Youhui , Wang Jiasi , Wu Li , Wei Weili , Ren Jinsong , Qu Xiaogang 
Published: April 2013

AbstractHerein, a pH stimuli‐responsive vehicle for intracellular drug delivery using CeO2 capped mesoporous silica nanoparticles (MSN) is reported. β‐Cyclodextrin‐modified CeO2 nanoparticles could cap onto ferrocene‐functionalized mesoporous silica through host–guest interactions. After internalization into A549 cells by a lysosomal pathway, the ferrocenyl moieties are oxidized to ferrocenium ions by CeO2 lids, which could trigger the uncapping of the CeO2 and cause the drugs release. Because of the pH‐dependent toxicity, the CeO2 here behaves as a multi‐purpose entity that not only acts as a lid but also exhibits a synergistic antitumor effect on cancer cells. Meanwhile, the cell protective effect of CeO2 nanoparticles alone is demonstrated, which ensures that the dissolved CeO2 nanoparticles can be non‐toxic to normal cells.
Modelling of penetration of horizontal supersonic nozzles in high temperature fluidised beds
Authors: Li Feng , Briens Cedric , Berruti Franco , McMillan Jennifer 
Published: April 2013

AbstractSupersonic nozzles have been applied in various jet‐induced fluidised bed attrition processes such as jet milling and Fluid Coking. In jet‐induced particle attrition, the penetration length into the bed of the jet issuing from the supersonic nozzle is a critical property that affects the attrition mechanisms. A numerical model was developed to predict the penetration length of jets issuing from a horizontal supersonic nozzle in high temperature fluidised beds, based on an Eulerian–Eulerian multiphase model and Granular kinetic theory. The predicted jet penetration lengths are in very good agreement with the experimental data and the predictions of Li's empirical correlation [Li, “Penetration of High Velocity Horizontal Gas Jets Into a Fluidized Bed at High Temperature”, in Fluidization XIII, S. D. Kim, Y. Kang, J. K. Lee, Y. C. Seo, Eds., Gyeong‐ju, Korea 2010; Engineering Conferences International, Gyeong‐ju, Korea 2010, pp. 893–900.]. The simulation results have also demonstrated that the fluidisation velocity and bed temperature have little influence on jet penetration length. © 2013 Canadian Society for Chemical Engineering
Application of the ThinPrep imaging system in urine cytology
Authors: van Hemel Bettien M. , Haarsma Jolanda G. , Ruitenbeek Teus , Groen Henk J. , Suurmeijer Albert J. H. 
Published: April 2013

BACKGROUNDIn this prospective study, for the first time, the authors compared the accuracy of reading urine specimens using the ThinPrep Imager System (TIS) with the accuracy of conventional screening for the detection of abnormal urine cells.METHODSThinPrep slides were made from 1455 urine specimens and were read with conventional screening and with TIS. Findings were categorized as “unsatisfactory or failure to read the slide,” “benign,” or “abnormal.” The Cohen κ coefficient was calculated to determine inter‐rater agreement between both methods. Urine samples that were followed by biopsies were used to compare the sensitivity, specificity, positive predictive value, and negative predictive value of both methods. From 22 urine specimens, the screening times were measured and compared.RESULTSThere was substantial agreement between both methods (κ score, 0.77). Of 175 urine specimens that were followed by bladder biopsies, for conventional screening, the sensitivity was 51.3%, specificity was 68.4%, the positive predictive value was 77.2%, and the negative predictive value was 40.2%; for TIS screening, the respective values were 54.6%, 68.4%, 78.3%, and 41.9%. The average time was 5.2 minutes for conventional screening and 3.9 minutes for TIS.CONCLUSIONSWith a κ score of 0.77, the current study demonstrated a good correlation between reading urine specimens with conventional screening and with TIS. Using TIS resulted in slightly increased sensitivity, positive predictive value, and negative predictive value compared with conventional screening and had the same specificity. These results indicate that reading urine specimens using TIS is equally reliable as conventional cytology. Cancer (Cancer Cytopathol) 2013;121:410‐4. © 2013 American Cancer Society.
Reynolds stress and sand transport over a foredune
Authors: Chapman Connie , Walker Ian J. , Hesp Patrick A. , Bauer Bernard O. , Davidson‐Arnott Robin G. D. , Ollerhead Jeff 
Published: April 2013

ABSTRACTReynolds shear stress (RS = –u′ w′) and sand transport patterns over a vegetated foredune are explored using three‐dimensional velocity data from ultrasonic anemometers (at 0 · 2 and 1 · 2 m) and sand transport intensity from laser particle counters (at 0 · 014 m). A mid‐latitude cyclone on 3–4 May 2010 generated storm‐force winds (exceeding 20 m s–1) that shifted from offshore to obliquely alongshore. Quadrant analysis was used to characterize the spatial variation of RS quadrant components (Q1 through Q4) and their relative contributions were parameterized using the flow exuberance relation, EXFL = (Q1 + Q3)/(Q2 + Q4).The magnitudes of RS and sand transport varied somewhat independently over the dune as controlled by topographic forcing effects on flow dynamics. A ‘flow exuberance effect’ was evident such that Q2 (ejection‐like) and Q4 (sweep‐like) quadrants (that contribute positively to RS) dominated on the beach, dune toe, and lower stoss, whereas Q1 and Q3 (that contribute negatively to RS) dominated near the crest. This exuberance effect was not expressed, however, in sand transport patterns. Instead, Q1 and Q4, with above‐average streamwise velocity fluctuations (+u′), were most frequently associated with sand transport. Q4 activity corresponded with most sand transport at the beach, toe, and stoss locations (52, 60, 100%). At the crest, 25 to 86% of transport was associated with Q1 while Q4 corresponded with most of the remaining transport (13 to 59%). Thus, the relationship between sand transport and RS is not as straightforward as in traditional equations that relate flux to stress in increasing fashion. Generally, RS was poorly associated with sand transport partly because Q1 and Q4 contributions offset each other in RS calculations. Thus, large amounts of transport can occur with small RS. Turbulent kinetic energy or Reynolds normal stresses (u′2, w′2) may provide stronger associations with sand transport over dunes, although challenges exist on how to normalize and compare these quantities. Copyright © 2013 John Wiley & Sons, Ltd.
Reproductive success of belted kingfishers on the upper Hudson River
Authors: Bridge Eli S. , Kelly Jeffrey F. 
Published: April 2013

Abstract

Belted kingfishers (Megaceryle alcyon) are predators in many North American aquatic ecosystems; as such, they are prone to bioaccumulation of certain environmental contaminants. In 2002 and 2004, kingfisher eggs collected near the upper Hudson River in New York had elevated concentrations of polychlorinated biphenyls (PCBs), and the kingfisher population in this area was reported to be at risk because of PCB exposure. From 2007 to 2009, the authors monitored 69 kingfisher nests on the Hudson River to track both nest success and survival of individual nestlings. The study site consisted of 2 adjacent sections of the Hudson River, 1 upstream and 1 downstream of a historic PCB source. The authors compared models of nest success that differentially incorporated the following 4 variables that they deemed most likely to affect reproductive output: 1) river section (upstream vs downstream of PCB source), 2) year, 3) hatch date, and 4) abandonment by 1 parent. After ranking models according to Akaike's information criterion for small sample sizes, it was clear that parental abandonment was the most important of the factors examined. River section was not an important parameter, and overall nesting success was slightly higher in the PCB-contaminated section than in the upstream area. These findings support the conclusion that kingfisher productivity is not adversely impacted by PCB contamination in the upper Hudson River. Environ Toxicol Chem 2013;32:1855–1863. © 2013 SETAC
Degree‐ and Orbit‐Balanced Γ‐Designs When Γ Has Five Vertices
Authors: Bonvicini Simona 
Published: April 2013

AbstractA Γ‐design of the complete graph is a set of subgraphs isomorphic to Γ (blocks) whose edge‐sets partition the edge‐set of . is balanced if the number of blocks containing x is the same number of blocks containing y for any two vertices x and y. is orbit‐balanced, or strongly balanced, if the number of blocks containing x as a vertex of a vertex‐orbit A of Γ is the same number of blocks containing y as a vertex of A, for any two vertices x and y and for every vertex‐orbit A of Γ. We say that is degree‐balanced if the number of blocks containing x as a vertex of degree d in Γ is the same number of blocks containing y as a vertex of degree d in Γ, for any two vertices x and y and for every degree d in Γ. An orbit‐balanced Γ‐design is also degree‐balanced; a degree‐balanced Γ‐design is also balanced. The converse is not always true. We study the spectrum for orbit‐balanced, degree‐balanced, and balanced Γ‐designs of when Γ is a graph with five vertices, none of which is isolated. We also study the existence of balanced (respectively, degree‐balanced) Γ‐designs of which are not degree‐balanced (respectively, not orbit‐balanced).
Velocity structure of the uppermost mantle beneath East Asia from Pn tomography and its dynamic implications
Authors: Wang Suyun , Niu Fenglin , Zhang Guomin 
Published: April 2013

AbstractEast Asia is one of the most tectonically active regions on Earth's surface due to the collision from the India plate and the suctions induced by the subduction of the Pacific and Philippine plates. To better understand the complicated deformation and active seismicity of the area, we conducted a Pn traveltime tomography to estimate the compressive wave speed of the uppermost mantle beneath East Asia. We collected a total of 296,334 Pn arrivals recorded by 1354 stations from 27,777 earthquakes in a rectangular area from 60°E to 145°E in longitude, 15°N to 60°N in latitude. The data set was carefully integrated from three different catalogs after examining potential systematic biases in the catalogs. The inversion results revealed a large‐scale velocity perturbation in the study area. Pn velocity in the region west to ~108°E is approximately 10% higher than that in the east. In each region, stable blocks tend to have high Pn velocity while the boundary regions, which show a high level of seismicity and surface deformation, appear to have low Pn velocity. We further computed the Benioff strain rate in the two regions and found it correlates negatively with the averaged Pn velocity. Our observations here suggest that Pn velocity, which is predominantly determined by Moho temperature, is a good indicator of lithosphere strength.
High‐altitude dust layers on Mars: Observations with the Thermal Emission Spectrometer
Authors: Guzewich Scott D. , Talaat Elsayed R. , Toigo Anthony D. , Waugh Darryn W. , McConnochie Timothy H. 
Published: April 2013

AbstractLimb‐scanning observations of Martian atmospheric dust with the Thermal Emission Spectrometer (TES) over 3 Mars years indicate two distinct altitude layers with persistent maxima in the dust mixing ratio vertical profile. The first, lower maximum in the dust distribution profile is the “high‐altitude tropical dust maximum” (HATDM) centered at 20–30 km, previously detected by the Mars Climate Sounder (MCS). Through the observation period, the HATDM followed a repeatable seasonal cycle with a brief absence in early northern spring and reached its highest altitudes and largest amplitude during the dust storm season in southern spring and summer. The HATDM is likely maintained during the day by a combination of convective and topographic updrafts and then degraded at night by scavenging from water ice clouds. The second, upper maximum in the dust distribution profile, which we refer, for convenience, to as the upper dust maximum (UDM), is centered at 45–65 km and is only detected in daytime observations. We see additional evidence of its presence in the limited number of MCS aerosol opacity retrievals available at these altitudes. Comparable dust mixing ratios are nearly absent from this altitude range at night. This upper maximum is generally a northern hemisphere phenomenon, peaking in amplitude in northern summer and nearly absent from the TES observational domain during the dust storm season. We suggest topographic updrafts over Martian volcanoes, small particle size, diurnal transport associated with thermal tides, and scavenging by water ice as probable key factors in the creation of the UDM.
Effects of asymmetry on the strength of the chelonian shell: A comparison of three species
Authors: Rivera Gabriel , Stayton C. Tristan 
Published: April 2013

ABSTRACTA major focus of the field of organismal biology is to understand how morphology impacts performance. Although the functional implications of certain aspects of shape have been widely examined, the functional implications of a related parameter, symmetry, remain mostly unknown. We used finite‐element models to examine the effects of turtle shell asymmetry on shell strength across three morphologically distinct emydid species. The goals of this study were to: 1) test the hypothesis that increased asymmetry (independent of differences in shape) is associated with increased stress levels for a given load, and thus with weaker shells, 2) ascertain how asymmetry and the position of load application interact to influence shell strength, and 3) determine how interspecific differences in shape influence the effect of asymmetry. We found that increased asymmetry does produce higher stresses for both midline and non‐midline loads. Non‐midline loads produce slightly larger and more variable stresses. Species‐specific shell shape can mitigate the effects of asymmetry; stronger shapes are potentially more resistant to the negative effects of asymmetry. Our findings indicate that changes in asymmetry associated with relatively small changes in shape can have as much of an effect on stress incurred by the shell as the changes in shape themselves. J. Morphol. 274:901–908, 2013. © 2013 Wiley Periodicals, Inc.
CXC Chemokine Receptor 4 is Essential for Maintenance of Renal cell Carcinoma-Initiating Cells and Predicts Metastasis
Authors: Gassenmaier Maximilian , Chen Dong , Buchner Alexander , Henkel Lynette , Schiemann Matthias , Mack Brigitte , Schendel Dolores J. , Zimmermann Wolfgang , Pohla Heike 
Published: April 2013

Abstract
In many solid tumors, cancer stem cells (CSC) represent a population with tumor-initiating, self-renewal, and differentiation potential, which can be identified by surface protein markers. No generally applicable markers are yet known for renal cell carcinoma (RCC). Two RCC cell lines (RCC-26, RCC-53) were found to differ widely in their capacity to form spheres in vitro and to establish tumors in mice, potentially reflecting differences in CSC content. A subpopulation expressing the CXC chemokine receptor 4 (CXCR4) was present only in the more tumorigenic cell line RCC-53. When grown as spheres, most of the RCC-53 cells were CXCR4-positive, expressed stem cell-associated transcription factor genes at elevated levels, and were more resistant toward the tyrosine kinase inhibitors sunitinib, sorafenib, and pazopanib. Sorted CXCR4-positive cells exhibited greater capacity for sphere formation and tumor growth-inducing potential in vivo than CXCR4-negative cells. Significantly, higher CXCR4 mRNA levels in primary RCC tumors from patients with localized but not disseminated disease predicted shorter survival. Downregulation of CXCR4 expression by small interfering RNA (siRNA) or pharmacological inhibition by AMD3100 compromised tumor sphere formation, viability of CXCR4-positive cells, and increased their responsiveness toward tyrosine kinase inhibitors. In conclusion, CXCR4 identifies a subpopulation of tumor-initiating cells in RCC cell lines and plays a role in their maintenance. The relative insensitivity of such cells to tyrosine kinase inhibitors might contribute to the development of therapy resistance in RCC patients. Future therapies therefore could combine blockade of the CXCR4 signaling pathway with standard therapies for more effective treatments of metastatic RCC.
Using shape and size to quantify variation in footprints for individual identification: Case study with white rhinoceros (Ceratotherium simum)
Authors: Law Peter R. , Jewell Zoe , Alibhai Sky 
Published: April 2013

AbstractFor those vertebrate species that create sufficiently complex footprints, identifying individuals from their footprints promises to be a noninvasive technique of great potential for wildlife studies and conservation, but with statistical challenges. Various approaches to employing footprints for identification appear in the literature, but doubt often remains as to the information contained in the footprints and therefore of the reliability of the procedures. For footprints represented by landmarks, we propose using pre‐assigned measures of shape and size of configurations of landmarks to quantify the variation in footprints amongst individuals relative to the variation in each individual's footprints. Our method provides a relatively simple means of assessing when footprints (represented by landmarks) from individuals of a population will be useful for identifying individuals, independent of any particular identification algorithm, and is also a tool for exploring footprint landmark data to aid development of discrimination routines. We illustrate the method using footprints collected from a population of white rhinoceros (Ceratotherium simum) at Otjiwa Game Ranch, Namibia, during late 1999. © 2013 The Wildlife Society.
Testing automated howling devices in a wintertime wolf survey
Authors: Brennan Angela , Cross Paul C. , Ausband David E. , Barbknecht Andrea , Creel Scott 
Published: April 2013

AbstractPrevious tests of the automated acoustic device, referred to as a howlbox, effectively identified the presence of wolves (Canis lupus) during the summer, near rendezvous sites. Howlboxes are self‐contained devices that broadcast simulated wolf howls and record howls made in response, and are of interest in remote locations to document the presence of dispersing wolves and new wolf packs. It is unclear whether the howlbox can also detect wolves during the winter when wolves are more mobile. We tested the howlbox's ability to detect wolves in an area with approximately 3 wolves/100 km2 and overlapping pack territories in western Wyoming, USA, during January–May 2011. Howlboxes detected wolves in only 1.1% (n = 185, 95% CI = 0.1–3.8%) of the surveys, but we recorded wolf tracks within 50 m of howlboxes 14.8% (n = 54, 95% CI = 6.6–27.1%) of the time. Though howlboxes seldom recorded wolf howls, our findings suggest the possibility that howlboxes may attract wolves in areas with overlapping pack territories during the winter. © 2013 The Wildlife Society.
Using DNA to test the utility of pellet‐group counts as an index of deer counts
Authors: Brinkman Todd J. , Person David K. , Smith Winston , Chapin F. Stuart , McCoy Karin , Leonawicz Matthew , Hundertmark Kris J. 
Published: April 2013

AbstractDespite widespread use of fecal pellet‐group counts as an index of ungulate density, techniques used to convert pellet‐group numbers to ungulate numbers rarely are based on counts of known individuals, seldom evaluated across spatial and temporal scales, and precision is infrequently quantified. Using DNA from fecal pellets to identify individual deer, we evaluated the relationship between pellet‐group count and count of Sitka black‐tailed deer (Odocoileus hemionus sitkensis) during a 3‐year study (2006–2008) in 3 watersheds in southeast Alaska, USA. We surveyed 141,054 m2 of transect, counted 10,569 pellet groups, and identified 737 unique deer. We used a multilevel mixed‐effects generalized linear model to analyze expected deer count as a function of pellet‐group count. Pellet‐group count was a significant predictor of DNA‐based index of deer count, but that relationship varied by transect, watershed, and year, indicating that extrapolation of a single linear relationship across space and time was not possible. More importantly, most of the variation in our models was residual and unexplained. Assuming that our DNA‐based results were a more accurate and precise metric of true deer count, we do not support the use of pellet‐group count to index deer count in southeast Alaska unless confounding factors are accounted for at fine spatial (e.g., habitat patch) scales. Because of the difficulty in routinely evaluating the influence of confounding variables in remote and unmanaged landscapes, we suggest that wildlife programs in these environments consider alternatives, such as DNA‐based methods, for monitoring trends in ungulate populations. © 2013 The Wildlife Society.
Harvest and crippling rates of mourning doves in Missouri
Authors: Schulz John H. , Bonnot Thomas W. , Millspaugh Joshua J. , Mong Tony W. 
Published: April 2013

AbstractMourning dove (Zenaida macroura) harvest management requires an assessment of birds shot and not recovered (hereafter, “crippled doves”) to fully determine harvest mortality. However, estimating crippling rates is challenging. We estimated mourning dove harvest mortality, which included crippling rates, on a public hunting area in Missouri, USA, by monitoring radiomarked doves. We also compared crippling rates of radiomarked doves with hunter‐reported estimates of crippling. During 2005–2008, we estimated annual harvest mortality between 23% and 30% on the area. Crippling rates ranged from 18% to 50% of harvest mortality in radiomarked doves. In comparison, hunter‐reported crippling rates during 2005–2011 (14–18%) were, on average, 30% lower but more consistent than estimates from radiomarked doves. During 2005–2008, harvest mortality of radiomarked doves was 27%, with one‐quarter of this mortality coming from crippled doves. Our empirical results confirm previous reports that crippling is a sizeable component of dove harvest. The potential bias in hunter‐reported crippling rates could result in overharvest if not considered. Therefore, future harvest management decisions should not overlook the potential impacts of crippling on populations, especially on locally managed public hunting areas. © 2013 The Wildlife Society.