bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bony labyrinth shape variation in extant Carnivora: a case study of Musteloidea
Authors: Grohé Camille , Tseng Z. Jack , Lebrun Renaud , Boistel Renaud , Flynn John J. 
Published: November 2015

AbstractThe bony labyrinth provides a proxy for the morphology of the inner ear, a primary cognitive organ involved in hearing, body perception in space, and balance in vertebrates. Bony labyrinth shape variations often are attributed to phylogenetic and ecological factors. Here we use three‐dimensional (3D) geometric morphometrics to examine the phylogenetic and ecological patterns of variation in the bony labyrinth morphology of the most species‐rich and ecologically diversified traditionally recognized superfamily of Carnivora, the Musteloidea (e.g. weasels, otters, badgers, red panda, skunks, raccoons, coatis). We scanned the basicrania of specimens belonging to 31 species using high‐resolution X‐ray computed micro‐tomography (μCT) to virtually reconstruct 3D models of the bony labyrinths. Labyrinth morphology is captured by a set of six fixed landmarks on the vestibular and cochlear systems, and 120 sliding semilandmarks, slid at the center of the semicircular canals and the cochlea. We found that the morphology of this sensory structure is not significantly influenced by bony labyrinth size, in comparisons across all musteloids or in any of the individual traditionally recognized families (Mephitidae, Procyonidae, Mustelidae). PCA (principal components analysis) of shape data revealed that bony labyrinth morphology is clearly distinguishable between musteloid families, and permutation tests of the Kmult statistic confirmed that the bony labyrinth shows a phylogenetic signal in musteloids and in most mustelids. Both the vestibular and cochlear regions display morphological differences among the musteloids sampled, associated with the size and curvature of the semicircular canals, angles between canals, presence or absence of a secondary common crus, degree of lateral compression of the vestibule, orientation of the cochlea relative to the semicircular canals, proportions of the cochlea, and degree of curvature of its turns. We detected a significant ecological signal in the bony labyrinth shape of musteloids, differentiating semi‐aquatic taxa from non‐aquatic ones (the taxa assigned to terrestrial, arboreal, semi‐arboreal, and semi‐fossorial categories), and a significant signal for mustelids, differentiating the bony labyrinths of terrestrial, semi‐arboreal, arboreal, semi‐fossorial and semi‐aquatic species from each other. Otters and minks are distinguished from non‐aquatic musteloids by an oval rather than circular anterior canal, sinuous rather than straight lateral canal, and acute rather than straight angle between the posterior and lateral semicircular canals – each of these morphological characters has been related previously to animal sensitivity for detecting head motion in space.
Rethinking the association between extraversion and job satisfaction: The role of interpersonal job context
Authors: Huang Jason L. , Bramble Reed J. , Liu Mengqiao , Aqwa Justin J. , Ott‐Holland Catherine J. , Ryan Ann Marie , Lounsbury John W. , Elizondo Fabian , Wadlington Patrick L. 
Published: November 2015

The person–job fit literature indicates that job satisfaction is contingent on the congruence between the individual and the job. We propose that interpersonal job context, the extent to which incumbents are exposed to social interaction on the job, magnifies the relationship between extraversion and job satisfaction. Using two large archival data sets (Ns = 5,849; 23,376) with job‐level information from O*NET, we demonstrated (1) a main effect of job‐level extraversion on interpersonal job context, and (2) a cross‐level moderating effect of interpersonal job context on the individual‐level extraversion–satisfaction relationship. These results suggest that extraverts are more likely to hold and be satisfied in jobs rich in social interaction. This research emphasizes the need for researchers and practitioners to consider personality–job context congruence.Practitioner points

We examined the relationship between personality and job satisfaction in two large archival data sets.

At the job level, extraverts were more likely than introverts to occupy jobs requiring spontaneous interpersonal contact.

Interpersonal job context magnified the association between extraversion and job satisfaction.

It is important to consider the fit between personality and the job context, beyond personality's main effects.
Effect of Cultivation Time on Production of Antifungal Metabolite(s) by Streptomyces hygroscopicus in Laboratory‐Scale Bioreactor
Authors: Tadijan Ivana , Grahovac Jovana , Dodić Jelena , Grahovac Mila , Dodić Siniša 
Published: November 2015

AbstractBiological control agents offer one of the best alternatives to reduce the use of pesticides. Fungi from the genera Alternaria, Colletotrichum and Fusarium are listed among the most important storage pathogens of apple fruits. During storage, transport and marketing, pathogenic fungi can cause significant losses of apple fruits. This investigation studied the potential of Streptomyces hygroscopicus as a biocontrol agent against pathogenic fungi obtained from apple fruit samples expressing rot symptoms. Production of antifungal metabolites by S. hygroscopicus was carried out in 3‐l bench‐scale bioreactor (Biostat® Aplus, Sartorius AG, Germany) during 7 days. Fermentation was carried out at 27°C with aeration rate of 0.5 vvm and agitation rate of 200 rpm. The aim was to analyse bioprocess parameters of batch biofungicide production in medium containing glucose as a carbon source and to examine at which stage of bioprocess production of antifungal metabolite(s) against six phytopathogenic fungi occurs. In vitro antifungal activity of the produced metabolites against six fungi of the genera Colletotrichum, Fusarium and Alternaria grown on potato dextrose agar were determined every 24 h using wells technique. Antifungal activity of cell‐free culture filtrate and filtrate treated with high temperature were tested. The filtrate treated with high temperature did not show any antifungal activity suggesting that active components are thermo unstable. Stationary phase of growth occurred between the third and fourth day of cultivation when production of secondary metabolites begins. Obtained results showed that maximal antifungal activity is achieved on fifth and sixth day of S. hygroscopicus cultivation under defined conditions (inhibition zone diameter higher than 30 mm for all test fungi).
A retrospective evaluation of polyurethane, long‐stay, peripheral venous cannulae in dogs undergoing radiotherapy
Authors: Macfarlane M. J. , Morris J. , Burnside S. , Bell A. 
Published: November 2015

OBJECTIVESThe aim of this retrospective study was to review placement duration and associated complications of long‐stay, peripheral venous cannulae in dogs undergoing a radiotherapy protocol. Factors affecting duration of stay of the cannulae were evaluated.METHODSThe records of patients which had a single‐lumen, 16‐gauge, 16‐cm polyurethane cannulae inserted into a peripheral vein between 2010 and 2014 were reviewed.RESULTSForty‐one cannulae were placed in 41 patients. Median duration of cannula stay was 14 days (range 2 to 26). In 14 cases (~34%) the cannula was removed at the end of the radiotherapy course. In 13 (~32%) cases, cannula‐related complications resulted in premature removal. Use of steroids and antibiotics appeared to be associated with a longer median duration of stay.CLINICAL SIGNIFICANCENo life‐threatening complications were encountered. Indwelling, polyurethane, saphenous cannulae were an effective and safe way to maintain venous access in this group of patients. Prednisolone and antibiotics were typically commenced for acute radiation side effects ‐midway through the protocol; therefore their association with length of stay may not be a direct result of their administration.
Hospital‐acquired Anemia in Critically Ill Dogs and Cats: A Multi‐Institutional Study
Authors: Lynch A.M. , Respess M. , Boll A.E. , Bozych M. , McMichael M. , Fletcher D.J. , De Laforcade A.M. , Rozanski E.A. 
Published: November 2015

BackgroundHospital‐acquired anemia is commonly described in people but limited information currently is available regarding its prevalence in animals.Hypothesis/objectivesAssess the prevalence of hospital‐acquired anemia in hospitalized critically ill dogs and cats, and examine its relationship with phlebotomy practices, transfusion administration, and survival to discharge.AnimalsEight hundred and fifty‐one client‐owned animals (688 dogs and 163 cats).MethodsA multicenter, observational study was conducted in which packed cell volume (PCV) was recorded at the time of admission and on subsequent hospitalization days. Signalment, number of blood samples obtained, underlying disease, whether or not blood products were administered, duration of hospitalization, and survival to discharge were recorded.ResultsAdmission anemia prevalence was 32%, with overall prevalence during the hospitalization period of 56%. The last recordedPCVwas significantly lower than the admissionPCVfor both dogs (admissionPCV, 42% [range, 6–67%]; last recordedPCV, 34% [range, 4–64%],P < .0001) and cats (admissionPCV, 31% [range, 6–55%]; last recordedPCV, 26% [range, 10–46%],P < .0001). Patients that developed anemia had significantly more blood samples obtained (nonanemic, 5 blood samples [range, 2–54]; anemic, 7 blood samples [range, 2–49],P < .0001). Hospitalized cats were significantly more likely to develop anemia compared to dogs (P < .0001), but anemic dogs were significantly less likely to survive to discharge (P = .0001). Surgical patients were at higher risk of developing hospital‐acquired anemia compared to medical patients (OR, 0.63; 95% CI, 0.4–0.9;P = .01).Conclusions and Clinical RelevanceHospital‐acquired anemia occurred frequently, especially in surgical patients. Additional studies focused on the direct effect of phlebotomy practices on the likelihood of anemia development in hospitalized animals are warranted.
Rapid genetic restoration of a keystone species exhibiting delayed demographic response
Authors: Cosentino Bradley J. , Schooley Robert L. , Bestelmeyer Brandon T. , McCarthy Alison J. , Sierzega Kevin 
Published: November 2015

AbstractGenetic founder effects are often expected when animals colonize restored habitat in fragmented landscapes, but empirical data on genetic responses to restoration are limited. We examined the genetic response of banner‐tailed kangaroo rats (Dipodomys spectabilis) to landscape‐scale grassland restoration in the Chihuahuan Desert of New Mexico, USA. Dipodomys spectabilis is a grassland specialist and keystone species. At sites treated with herbicide to remove shrubs, colonization by D. spectabilis is slow and populations persist at low density for ≥10 years (≥6 generations). Persistence at low density and low gene flow may cause strong founder effects. We compared genetic structure of D. spectabilis populations between treated sites and remnant grasslands, and we examined how the genetic response to restoration depended on treatment age, area, and connectivity to source populations. Allelic richness and heterozygosity were similar between treated sites and remnant grasslands. Allelic richness at treated sites was greatest early in the restoration trajectory, and genetic divergence did not differ between recently colonized and established populations. These results indicated that founder effects during colonization of treated sites were weak or absent. Moreover, our results suggested founder effects were not mitigated by treatment area or connectivity. Dispersal is negatively density‐dependent in D. spectabilis, and we hypothesize that high gene flow may occur early in the restoration trajectory when density is low. Our study shows genetic diversity can be recovered more rapidly than demographic components of populations after habitat restoration and that founder effects are not inevitable for animals colonizing restored habitat in fragmented landscapes.
New evidence for hybrid zones of forest and savanna elephants in Central and West Africa
Authors: Mondol Samrat , Moltke Ida , Hart John , Keigwin Michael , Brown Lisa , Stephens Matthew , Wasser Samuel K. 
Published: November 2015

AbstractThe African elephant consists of forest and savanna subspecies. Both subspecies are highly endangered due to severe poaching and habitat loss, and knowledge of their population structure is vital to their conservation. Previous studies have demonstrated marked genetic and morphological differences between forest and savanna elephants, and despite extensive sampling, genetic evidence of hybridization between them has been restricted largely to a few hybrids in the Garamba region of northeastern Democratic Republic of Congo (DRC). Here, we present new genetic data on hybridization from previously unsampled areas of Africa. Novel statistical methods applied to these data identify 46 hybrid samples – many more than have been previously identified – only two of which are from the Garamba region. The remaining 44 are from three other geographically distinct locations: a major hybrid zone along the border of the DRC and Uganda, a second potential hybrid zone in Central African Republic and a smaller fraction of hybrids in the Pendjari–Arli complex of West Africa. Most of the hybrids show evidence of interbreeding over more than one generation, demonstrating that hybrids are fertile. Mitochondrial and Y chromosome data demonstrate that the hybridization is bidirectional, involving males and females from both subspecies. We hypothesize that the hybrid zones may have been facilitated by poaching and habitat modification. The localized geography and rarity of hybrid zones, their possible facilitation from human pressures, and the high divergence and genetic distinctness of forest and savanna elephants throughout their ranges, are consistent with calls for separate species classification.
Graduates, Dropouts and Slow Finishers: The Effects of Credit Constraints on University Outcomes
Authors: Cardak Buly A. , Vecci Joe 
Published: November 2015

AbstractThe effect of credit constraints on university outcomes is studied. Credit constraints have a negative relationship with dropout, especially on lower achieving high school graduates. Credit constrained students with strong high school achievement are 13–15% more (less) likely to graduate (be slow finishers) relative to otherwise similar students who are potentially or unlikely constrained. Using competing risk analysis, we find dropout is most likely in the first year of study and falls over time for all students. After 3 years of study, the risk of dropout increases for students who are constrained suggesting constraints may eventually bind on these students.
Enhancing blast disease resistance by overexpression of the calcium‐dependent protein kinase OsCPK4 in rice
Authors: Bundó Mireia , Coca María 
Published: November 2015

SummaryRice is the most important staple food for more than half of the human population, and blast disease is the most serious disease affecting global rice production. In this work, the isoform OsCPK4 of the rice calcium‐dependent protein kinase family is reported as a regulator of rice immunity to blast fungal infection. It shows that overexpression of OsCPK4 gene in rice plants enhances resistance to blast disease by preventing fungal penetration. The constitutive accumulation of OsCPK4 protein prepares rice plants for a rapid and potentiated defence response, including the production of reactive oxygen species, callose deposition and defence gene expression. OsCPK4 overexpression leads also to constitutive increased content of the glycosylated salicylic acid hormone in leaves without compromising rice yield. Given that OsCPK4 overexpression was known to confer also salt and drought tolerance in rice, the results reported in this article demonstrate that OsCPK4 acts as a convergence component that positively modulates both biotic and abiotic signalling pathways. Altogether, our findings indicate that OsCPK4 is a potential molecular target to improve not only abiotic stress tolerance, but also blast disease resistance of rice crops.
Cellulitis‐Like Rash Associated with Kawasaki Disease
Authors: Itamura Shinji , Ishiguchi Yukiko , Kuwabara Kentaro , Yasui Kozo , Kamada Masahiro 
Published: November 2015

AbstractWe present the case of a 5‐year‐old‐boy who developed a fever and cellulitis‐like groin rash 5 days before developing conjunctivitis and 6 to 7 days before other typical signs of Kawasaki disease (KD) appeared. The cellulitis failed to respond to antibiotics and no pathogens were isolated. His fever and clinical signs resolved with intravenous immunoglobulin and high‐dose aspirin after discontinuation of antibiotics. Nonbacterial cellulitis is a rare presenting sign of KD, but in the appropriate clinical setting and population, a diagnosis of KD should be considered when cellulitis and fever fail to respond to an appropriate antibiotic regimen and no pathogen can be isolated.
Migration and Regional Trade Agreements: A (New) Gravity Estimation
Authors: Figueiredo Erik , Lima Luiz Renato , Orefice Gianluca 
Published: November 2015

AbstractThis paper investigates the role of regional trade agreements (RTAs) on bilateral international migration. Building on a gravity model for migration, our econometric strategy controls for the multilateral resistance to migration and solves the zero migration flows problem by using a censored quantile regression approach. Further, the endogeneity problem of RTAs in migration settlement is addressed by using instrumental variable censored quantile regression. Our results suggest that the presence of a RTA stimulates the migration stocks among member countries. The pro‐migration effect of RTAs is magnified if the agreement includes also provisions easing bureaucratic procedures for visa and asylum among member countries. Finally, we find an asymmetric effect of RTAs across the quantiles of the distribution of migration settlements.
Hydroxyproline O‐arabinosyltransferase mutants oppositely alter tip growth in Arabidopsis thaliana and Physcomitrella patens
Authors: MacAlister Cora A. , Ortiz‐Ramírez Carlos , Becker Jörg D. , Feijó José A. , Lippman Zachary B. 
Published: November 2015

SummaryHydroxyproline O‐arabinosyltransferases (HPATs) are members of a small, deeply conserved family of plant‐specific glycosyltransferases that add arabinose sugars to diverse proteins including cell wall‐associated extensins and small signaling peptides. Recent genetic studies in flowering plants suggest that different HPAT homologs have been co‐opted to function in diverse species‐specific developmental contexts. However, nothing is known about the roles of HPATs in basal plants. We show that complete loss of HPAT function in Arabidopsis thaliana and the moss Physcomitrella patens results in a shared defect in gametophytic tip cell growth. Arabidopsis hpat1/2/3 triple knockout mutants suffer from a strong male sterility defect as a consequence of pollen tubes that fail to fully elongate following pollination. Knocking out the two HPAT genes of Physcomitrella results in larger multicellular filamentous networks due to increased elongation of protonemal tip cells. Physcomitrella hpat mutants lack cell‐wall associated hydroxyproline arabinosides and can be rescued with exogenous cellulose, while global expression profiling shows that cell wall‐associated genes are severely misexpressed, implicating a defect in cell wall formation during tip growth. Our findings point to a major role for HPATs in influencing cell elongation during tip growth in plants.
Numerical Investigation of Heat Transfer in Rough Microchannels Using a Kinetic Continuum Solver
Authors: Rovenskaya Olga , Croce Giulio 
Published: November 2015

A numerical analysis of flow and heat transfer fields in a rough microchannel is carried out using a hybrid solver dynamically coupling kinetic and Navier–Stokes solutions computed in local rarefied and continuum areas of the flow, respectively. The roughness geometry is modeled as a series of triangular obstructions and a relative roughness up to 5% of the channel height is considered. Keeping Mach number low (incompressible flow) while varying Knudsen number allow us to investigate different rarefaction levels of the flow.
The competition between roughness, rarefaction and heat transfer effects is discussed in terms of averaged Nusselt and Poiseuille numbers and mass flow rate. Discrepancy between the full Navier–Stokes and hybrid solutions is investigated, assessing the range of applicability of the first order slip boundary condition for rough geometries with and without heat transfer presence.
Approaches Towards the Ultimate Luminous Output Power of Light-Emitting Diodes: Bottlenecks and Remedies
Authors: Zhang Xiaokun , Xiang Xiao-Dong , Xiang Yong 
Published: November 2015

Although light-emitting diodes (LEDs) hold great promises for high-efficiency lighting applications, the cost per lumen still poses a challenge for LEDs to fast penetrate into the markets. Increasing the output power per LED chip reduces the number of chips required for a specific luminous flux, thus reducing the cost of LED luminaires. However, it is well known that the luminous output power of LEDs (Pout) cannot be enhanced simply by increasing the injection current density (Jinj) due to efficiency droop. Extensive efforts have been made towards avoiding efficiency droop at high injection current densities (e.g., Jinj > 50 A/cm2). Gardner et al. reported a double-heterostructure LED with an external quantum efficiency (EQE) of 40% at 200 A/cm2. Xie et al. introduced an electron-blocking layer into the LED devices and the EQE peak occurred at 900 A/cm2 approximately. Nevertheless, the EQE is always lower than 100%, excessive heat will accumulate in LEDs at high current densities and increase the junction temperatures, which will damage the device and limit its luminous output power and lifetime.
In this paper, the recombination mechanism in the LED active area is analyzed and an analytic relationship between Pout and Jinj is proposed. The calculated results show that the best Pout currently achieved is far lower than its potential value. The temperature dependence of the Pout-Jinj relationship is also calculated and the thermal state of LEDs at high injection current densities predicted. The results demonstrate that LED luminaires with thermal management based on conventional fin-shaped heat sinks suffer from thermal runaway due to excessive heat accumulation before reaching their ultimate output power. The gap between the existing and predicted Pout is mainly due to thermal runaway of LED devices at high injection current densities, instead of efficiency droop. Therefore, the short-term solution of LED luminous output power enhancement should be better cooling of LED modules, such as jet/spray cooling, heat pipe cooling, or 3D embedded two-phase cooling. Long-term solutions continue to focus on reducing the efficiency droop with improved LED device structures and advanced materials.