bluuebunny/crossref_metadata_2025_split huggingface dataset:
Weakly nonlinear stages of boundary-layer transition initiated by modulated Tollmien–Schlichting waves
Authors: de Paula I. B. , Würz W. , Krämer E. , Borodulin V. I. , Kachanov Y. S. 
Published: September 2013

AbstractWeakly nonlinear interactions involving amplitude-modulated Tollmien–Schlichting waves in an incompressible, two-dimensional aerofoil boundary layer are investigated experimentally. Selected resonant regimes are examined with emphasis on the regimes where more than one fundamental Tollmien–Schlichting (TS) wave is present in the flow. The experiments were performed on an NLF-type aerofoil section for glider applications. Disturbances with controlled frequency-spanwise-wavenumber spectra were excited in the boundary layer and studied by phase-locked hot-wire measurements. The results show that nonlinear mechanisms connected with the steepening of the primary TS wave modulation do not play any significant role in the transition scenarios studied. It is also shown that modulations of the two-dimensional fundamental waves tend to generate additional modes at modulation frequency. These low-frequency disturbances are found to be produced by a non-resonant quadratic combination of spectral components of the primary, modulated TS wave. The investigations show that the efficiency of the process is higher for three-dimensional low-frequency modes in comparison with two-dimensional modes. Thus, the emergence of three-dimensionality for the low-frequency waves does not require any resonant interactions. In a subsequent nonlinear stage, the self-generated detuned subharmonics are found to be strongly amplified due to resonant interactions with the primary TS waves. The sequence of weakly nonlinear mechanisms found and investigated here seems to be the most likely route to the laminar–turbulent transition, at least for two-dimensional boundary layers of aerofoils with a long extent of laminar flow and in a ‘natural’ disturbance environment.
HIV/AIDS KNOWLEDGE, ATTITUDE AND PRACTICE AMONG WOMEN IN THE LEAST AND MOST HIV/AIDS AFFECTED REGIONS OF MAINLAND TANZANIA
Authors: KATAPA R. S. , RWEYEMAMU D. K. 
Published: September 2013

SummaryAmong women in mainland Tanzania, Iringa region in the southern highlands has the highest HIV/AIDS prevalence rate while Arusha region in the north-east has the lowest prevalence rate. In a 2007/8 survey, Iringa's HIV rate for women was 18.6% versus 0.8% in Arusha. Using data from a survey of women aged 15–49 years conducted in 2009 by the Champion project of EngenderHealth, a comparison was made of HIV/AIDS knowledge, attitude and practice between women in Iringa and Arusha regions. It was found that women in Arusha region had more knowledge of HIV/AIDS than women in Iringa region, and that more than three-quarters of the women in each region were married and 12% of the women in Arusha region had never been married compared with 8% of the women in Iringa region. The majority of women in each region had at least primary school education and there was no significant difference between their educational levels. Women in Arusha region were economically less active than women in Iringa region, a statistically significant association. More women in Arusha region than in Iringa region had never had children (24% versus 12%). Similarly, women in Arusha region had significantly fewer children compared with women in Iringa.
Mozarabicprecesin Ars Nova notation: a new fourteenth-century fragment discovered in Spain
Authors: CATALUNYA DAVID , GUTIÉRREZ CARMEN JULIA 
Published: September 2013

ABSTRACTThis article reports the discovery of an early fourteenth-century manuscript fragment (two small snippets from the same folio) of Castilian origin. One side of the original folio contained a monophonic piece in Ars Nova notation whose text has been identified as Mozarabicpreces, a musical repertoire that was suposed to lack written transmission from the twelfth to the early sixteenth centuries. The fragment thus throws new light on the survival of the Mozarabic rite through the late Middle Ages. The backside of the folio contains music written in an old mensural system based on undifferentiatedsemibrevesandpuncta divisionis. In this regard, the manuscript may represent the earliest known Spanish source to employ the Petronian system described in the mensural treatise in Barcelona Cathedral (misc. 23). The study includes a detailed codicological examination of the manuscript (including the digital restoration of a palimpsest), transcriptions and musical analysis.
EVOLUTIONARY DISCOURSE AND THE CREDIT ECONOMY IN ELIZABETH GASKELL'SWIVES AND DAUGHTERS
Authors: Leighton Mary Elizabeth , Surridge Lisa 
Published: September 2013

When Elizabeth Gaskell died inNovember 1865, she left unfinished her final novel,Wives and Daughters(1864–66). TheCornhill Magazine's editor, Frederick Greenwood, published a tribute to Gaskell with the novel's final installment. Her fiction, he wrote, pulls you from “an abominable wicked world, crawling with selfishness and reeking with base passions into one where there is much weakness, many mistakes, sufferings long and bitter, but where it is possible for people to live calm and wholesome lives . . .” (Gaskell 685–86; ch. 60). As Linda K. Hughes and Michael Lund observe, Greenwood shaped Gaskell's reputation for a hundred years “as an author whose work captured . . . the idyllic charm of a lost era” and took “readers away from unpleasant realities” (158). Notably, Greenwood's list of “unpleasant realities” (wickedness, selfishness, and base passions) implicitly refers to capitalism — that is, to the economic world of the 1860s from which Gaskell ostensibly encouraged her readers to retreat.
MIND AND MATTER IN THE PICTURE OF DORIAN GRAY
Authors: Davis Michael 
Published: September 2013

In chapter 8 of Dorian Gray, Dorian reflects on the terrifying discovery, which he has made the previous night, that the painting has been somehow altered to express his own moral state. He speculates thus on a possible explanation for the change in the picture:
Was there some subtle affinity between the chemical atoms, that shaped themselves into form and colour on the canvas, and the soul that was within him? Could it be that what that soul thought, they realized? – that what it dreamed, they made true? (Wilde 93)
At the end of the chapter, he thinks along similar lines:
Might there not be some curious scientific reason for it all? If thought could exercise its influence upon a living organism, might not thought exercise an influence upon dead and inorganic things? Nay, without thought or conscious desire, might not things external to ourselves vibrate in unison with our moods and passions, atom calling to atom in secret love or strange affinity? (103)
Wilde's references to “atoms” encapsulate something of the complexity and paradox which characterise the novel's representations of the mind and its connection with the body. Atoms make up the painting and Dorian's own body, and this reminder of the materiality of both reminds us, in turn, of the possibility that Dorian, and all human selves, may occupy an insignificant yet inescapable place in the wider processes of the physical world. Most pervasively in the novel, and in the fin de siècle more generally, anxieties about one such material process – that of evolution, and especially of degeneration – haunt representations of the self. In Dorian's thoughts about “atoms” lies the still more extreme possibility that the very distinction between organic and inorganic may be blurred, a vertiginous sense that human evolutionary kinship extends beyond even the simplest organisms to matter itself, and that the category of the human is thus under greater threat than ever in the light of scientific theories of the material world. At the same time, the questions that Dorian asks himself envisage not the reduction of the mind to matter but the near-opposite of this: the possibility that “thought” may somehow “influence” the matter of the painting. In a fantastical version of the Hegelian idealism which forms an important part of Wilde's philosophical position, the mind may prove to be the ultimate reality, independent of and dominant over matter, as the state of Dorian's mind is mysteriously given sensuous form in the transformations which the painting undergoes. The atoms of the painting, like the human mind, take on an ambiguous relationship to the material world. The atoms are not fixed but fluid; like the mind itself, they are material and yet seem to act in ways contrary to physical laws of cause and effect, always in process and resistant to external comprehension.
Rapid genotypic change and plasticity in arbuscular mycorrhizal fungi is caused by a host shift and enhanced by segregation
Authors: Angelard Caroline , Tanner Colby J , Fontanillas Pierre , Niculita-Hirzel Hélène , Masclaux Frédéric , Sanders Ian R 
Published: September 2013

Abstract
Arbuscular mycorrhizal fungi (AMF) are among the most abundant symbionts of plants, improving plant productivity and diversity. They are thought to mostly grow vegetatively, a trait assumed to limit adaptability. However, AMF can also harbor genetically different nuclei (nucleotypes). It has been shown that one AMF can produce genotypically novel offspring with proportions of different nucleotypes. We hypothesized that (1) AMF respond rapidly to a change of environment (plant host) through changes in the frequency of nucleotypes; (2) genotypically novel offspring exhibit different genetic responses to environmental change than the parent; and (3) genotypically novel offspring exhibit a wide range of phenotypic plasticity to a change of environment. We subjected AMF parents and offspring to a host shift. We observed rapid and large genotypic changes in all AMF lines that were not random. Genotypic and phenotypic responses were different among offspring and their parents. Even though growing vegetatively, AMF offspring display a broad range of genotypic and phenotypic changes in response to host shift. We conclude that AMF have the ability to rapidly produce variable progeny, increasing their probability to produce offspring with different fitness than their parents and, consequently, their potential adaptability to new environmental conditions. Such genotypic and phenotypic flexibility could be a fast alternative to sexual reproduction and is likely to be a key to the ecological success of AMF.
Kin recognition inDrosophila: the importance of ecology and gut microbiota
Authors: Lizé Anne , McKay Raegan , Lewis Zenobia 
Published: September 2013

AbstractThe animal gut commonly contains a large reservoir of symbiotic microbes. Although these microbes have obvious functions in digestion and immune defence, gut microbes can also affect behaviour. Here, we explore whether gut microbiota has a role in kin recognition. We assessed whether relatedness, familiarity and food eaten during development altered copulation investment in three species of Drosophila with diverse ecologies. We found that a monandrous species exhibited true kin recognition, whereas familiarity determined kin recognition in a species living in dense aggregations. Finally, in a food generalist species, food eaten during development masked kin recognition. The effect of food type on copulation duration, in addition to the removal of this effect via antibiotic treatment, suggests the influence of bacteria associated with the gut. Our results provide the first evidence that varied ecologically determined mechanisms of kin recognition occur in Drosophila, and that gut bacteria are likely to have a key role in these mechanisms.
Size matters: implications of the loss of large individuals for ecosystem function
Authors: Norkko Alf , Villnäs Anna , Norkko Joanna , Valanko Sebastian , Pilditch Conrad 
Published: September 2013

AbstractSize is a fundamental organismal trait and an important driver of ecosystem functions. Although large individuals may dominate some functions and provide important habitat structuring effects, intra-specific body size effects are rarely investigated in the context of BEF relationships. We used an in situ density manipulation experiment to explore the contribution of large, deep-burrowing bivalves to oxygen and nutrient fluxes across the sediment-water interface. By manipulating bivalve size structure through the removal of large individuals, we held species identity constant, but altered the trait characteristics of the community. The number of large bivalves was the best predictor of ecosystem functioning. Our results highlight that (a) accounting for body size provides important insights into the mechanisms underpinning biodiversity effects on ecosystem function and (b) if local disturbances are recurrent, preventing individuals from reaching large sizes, the contribution of large adults may be lost, with largely unknown implications for ecosystem functionality.
When Are Private Standards More Stringent than Public Standards?
Authors: Vandemoortele Thijs , Deconinck Koen 
Published: September 2013

AbstractRetailers' private standards are increasingly important for addressing consumer concerns about safety, quality, and social and environmental issues. Empirical evidence shows that these private standards are frequently more stringent than their public counterparts. This article develops a political economy model that helps explain this stylized fact. We show that if producers exercise their political power to persuade the government to impose a lower public standard, retailers may apply their market power to install a private standard at a higher level than the public one, depending on several factors.
Fishery-induced changes in Norwegian red king crab (Paralithodes camtschaticus) reproductive potential
Authors: Hjelset Ann Merete 
Published: September 2013

AbstractHjelset, A. M. 2014. Fishery-induced changes in Norwegian red king crab (Paralithodes camtschaticus) reproductive potential. – ICES Journal of Marine Science, 71: 365–373. The introduced red king crab (Paralithodes camtschaticus) in the Barents Sea supports a valuable fishery in northern Norway. In this paper, I examine the effect of the increased harvest rate and the recently added female quota on the potential egg production of the stock. The size ranges of males and females in the period 1995–2011 were recorded, and estimated stock abundance of ovigerous females and established individual fecundity parameters from 2000–2007 were used to assess the reproductive potential of the stock from 1995–2011. The upper size ranges of males and females decreased throughout the period studied, presumably mainly due to fishing. The change in size composition among ovigerous females and functional mature males, and the reduced mean individual fecundity in the stock seem to have had a negative effect on the potential egg production of the stock.
Corroboration and refinement of a method for differentiating landings from two stocks of Pacific sardine (Sardinops sagax) in the California Current
Authors: Demer David A. , Zwolinski Juan P. 
Published: September 2013

Abstract
Demer, D. A., and Zwolinski, J. P. 2014. Corroboration and refinement of a method for differentiating landings from two stocks of Pacific sardine (Sardinops sagax) in the California Current. – ICES Journal of Marine Science, 71: 328–335. Efforts to survey, assess and manage Pacific sardine (Sardinops sagax) in the California Current may depend on accurate differentiation of the purported two migrating stocks. The southern stock spans seasonally from southern Baja California, México to Point Conception, California; the northern stock spans seasonally from Punta Eugenia, México northwards to southern Alaska. Their seasonal north–south migrations are approximately synchronous within their respective domains, resulting in segregated spawning and different identities. A decade ago, a practical method was proposed for differentiating landings from the two stocks using concomitant measurements of sea-surface temperature (SST). Here, we corroborate and refine the method using regional indices of optimal and good potential habitat for the northern stock, and SST-based indices associated with the 99.9 and 100% confidence intervals of the potential habitat. For months when the index is <0.5, (i.e. when the minority of a fishing region probably includes potential northern stock habitat), the landings are attributed to the southern stock, and vice versa. We applied this method to regional monthly landings data from 2006–2011 and the results indicated that an average of 63–72 and 32–36% of the summertime landings at Ensenada, México and San Pedro, southern California were probably from the southern stock, respectively, depending on the index used. Allocation error could be reduced if the landings were evaluated on finer spatio-temporal scales, particularly during habitat-transition periods. Our method may be used to improve estimates of northern stock biomass, spatial and length distributions, recruitment, and mortality.
Shoreline configurations affect dispersal patterns of fish larvae in a large river
Authors: Lechner Aaron , Keckeis Hubert , Schludermann Elisabeth , Loisl Franz , Humphries Paul , Glas Martin , Tritthart Michael , Habersack Helmut 
Published: September 2013

AbstractThe dispersal patterns of marked larvae of the nase carp (Chondrostoma nasus L.) were observed alongside dissimilar shoreline configurations in the main channel of the free-flowing Austrian Danube and compared with those of floating particles to investigate the mode of dispersal (active–passive). Individuals of different larval stages and floats at similar densities were released at an artificial rip-rap with groynes and a rehabilitated gravel bar. In both habitats, marked individuals were recaptured during the sampling period of 4 d after release. Relevant shoreline attributes for larval dispersal, such as the accessibility of nursery habitats, connectivity between adjacent habitats, and retention potential, were more pronounced at the gravel bar than at the rip-rap. At the gravel bar, larvae moved upstream and downstream within the connected bankside nurseries and displayed longer residence times. Larvae settled in groyne fields along the rip-rap as well; however, longitudinal dispersal was disrupted by groynes, forcing larvae to enter the main channel. Rather than settling in subsequent groyne fields, we assume that these larvae are displaced downstream and potentially lost from the local population.
Lessons learned from developing integrated ecosystem assessments to inform marine ecosystem-based management in the USA
Authors: Samhouri Jameal F. , Haupt Alison J. , Levin Phillip S. , Link Jason S. , Shuford Rebecca 
Published: September 2013

Abstract
Borne out of a collective movement towards ecosystem-based management (EBM), multispecies and multi-sector scientific assessments of the ocean are emerging around the world. In the USA, integrated ecosystem assessments (IEAs) were formally defined 5 years ago to serve as a scientific foundation for marine EBM. As outlined by the US National Oceanic Atmospheric Administration in 2008, an IEA is a cyclical process consisting of setting goals and targets, defining indicators, analysing status, trends, and risk, and evaluating alternative potential future management and environmental scenarios to enhance information needed for effective EBM. These steps should be hierarchical, iterative, non-prescriptive about technical implementation, and adaptable to existing information for any ecosystem. Despite these strengths and some initial successes, IEAs and EBM have yet to be fully realized in the USA. We propose eight tenets that can be adopted by scientists, policy-makers, and managers to enhance the use of IEAs in implementing EBM. These tenets include (i) engage with stakeholders, managers, and policy-makers early, often, and continually; (ii) conduct rigorous human dimensions research; (iii) recognize the importance of transparently selecting indicators; (iv) set ecosystem targets to create a system of EBM accountability; (v) establish a formal mechanism(s) for the review of IEA science; (vi) serve current management needs, but not at the expense of more integrative ocean management; (vii) provide a venue for EBM decision-making that takes full advantage of IEA products; and (viii) embrace realistic expectations about IEA science and its implementation. These tenets are framed in a way that builds on domestic and international experiences with ocean management. With patience, persistence, political will, funding, and augmented capacity, IEAs will provide a general approach for allowing progressive science to lead conventional ocean management to new waters.
First Report of the Root-Knot Nematode Meloidogyne enterolobii Parasitizing Watermelon from Veracruz, Mexico
Authors: Ramírez-Suárez A. , Rosas-Hernández L. , Alcasio-Rangel S. , Powers T. O. 
Published: September 2013

In early April 2012, a sampling of watermelon crop Citrullus lanatus (Thunb.) Matsum & Nakai, 1916 cv. Sunsugar took place as part of the National System of Epidemiological Phytosanitary Surveillance (SINAVEF-MEX). This sampling was conducted at Riachuelos locality, Tecolutla, Veracruz, located at the geographic coordinates: 20.42008° N and 96.9627° W, within 50 meters of the Gulf of Mexico. Plants showed yellowing, stunting, and high levels of infection expressed by extensive galling on the roots. These symptoms were reproduced in the greenhouse on watermelon cv. Sunsugar. Egg masses were extracted to obtain juveniles (J2). Female necks and perineal patterns were mounted as well as males and J2 to take measurements of selected morphometric characters. To determine the nematode identity based on a morphological species concept, the following characters were considered. Females: stylet length, DGO and perineal pattern; males: stylet length; J2: body, stylet, tail, and hyaline tail terminus length. The morphometric analysis showed that those values corresponded to the original description of the root-knot nematode Meloidogyne enterolobii Yang & Eisenback, 1983 (=M. mayaguensis Rammah & Hirschmann, 1988) (1,2,3,4). For confirmation of this finding, a molecular diagnosis was performed using markers located in rDNA and mtDNA by PCR amplification and DNA sequencing. The rDNA region analyzed was the expansion segments D2-D3 of the 28S gene (primers D2A and D3B). This produced an amplified product of 780 bp. With regard to mtDNA, an amplification of the marker located between the genes COII/16S (primers C2F3 and 1108) resulted in a fragment of 705 bp that is specific for M. enterolobii (1). Sequences of the amplified products were compared with sequences from GenBank (NCBI). The sequences of both markers exhibited 99 and 100% identity with sequences corresponding to M. enterolobii isolates from Florida, Puerto Rico, and China. Maximum likelihood phylogenetic trees of rDNA and mtDNA sequences demonstrated that the Mexican isolate of M. enterolobii grouped among other isolates exclusive of other Meloidogyne species. The detection of this nematode in Veracruz, Mexico, expands the previously known worldwide distribution. It represents a serious threat due to the high level of aggressiveness shown in watermelon, which was so severe that growers had to change to a different crop. To our knowledge, this is the first report of the root-knot nematode M. enterolobii infecting watermelon cv. Sunsugar in Veracruz, Mexico. References: (1) J. Brito et al. J. Nematol. 36:232, 2004. (2) G. Karssen et al. ZooKeys 181:67, 2012. (3) A. Rammah and H. Hirshmann. J. Nematol. 20:58, 1988. (4) B. Yang and J. Eisenback. J. Nematol. 15:381, 1983.