bluuebunny/crossref_metadata_2025_split huggingface dataset:
Spatio-temporal overlap of hatching in Norwegian spring-spawning herring and the spring phytoplankton bloom at available spawning substrata
Authors: Vikebø Frode B. , Korosov Anton , Stenevik Erling Kåre , Husebø Åse , Slotte Aril 
Published: May 2012

Abstract
Vikebø, F. B., Korosov, A., Stenevik, E. K., Husebø, Å., and Slotte, A. 2012. Spatio-temporal overlap of hatching in Norwegian spring-spawning herring and the spring phytoplankton bloom at available spawning substrata. – ICES Journal of Marine Science, 69: . Analyses of bottom substrata demonstrated that a potential spawning area of 13 490 nautical miles2 is available for Norwegian spring-spawning (NSS) herring on the Norwegian shelf between 59 and 71°N. However, the availability of suitable substrata differed significantly on a latitudinal scale; 60% of the available spawning area was north of 67°N. However, the spatial distribution of larvae indicated that the bulk of the adult population wintering off northern Norway in the period 1998–2007 migrated farther south and upstream to spawn. This suggests benefits attributable to extra costs accompanying the spawning migration. To test whether southern spawning is beneficial with regard to overlap between herring larvae and their prey, remotely sensed chlorophyll a data from SeaWiFS were used as a proxy for the onset of phytoplankton bloom (OSB) in discrete bins along the Norwegian coast and linked to interannual variation in the observed average timing of larval hatching during the years 1998–2007. There was a delay in OSB with increasing latitude of 37 d within the spawning habitat of NSS herring. Overlap between larval hatching and OSB was clearly highest in the south, suggesting that match with prey availability may be an important factor in the selection of spawning grounds by NSS herring.
Analysis of Arabidopsisglucose insensitive growthMutants Reveals the Involvement of the Plastidial Copper Transporter PAA1 in Glucose-Induced Intracellular Signaling
Authors: Lee Shin Ae , Yoon Eun Kyung , Heo Jung-Ok , Lee Mi-Hyun , Hwang Indeok , Cheong Hyeonsook , Lee Woo Sung , Hwang Yong-sic , Lim Jun 
Published: May 2012

AbstractSugars play important roles in many aspects of plant growth and development, acting as both energy sources and signaling molecules. With the successful use of genetic approaches, the molecular components involved in sugar signaling have been identified and their regulatory roles in the pathways have been elucidated. Here, we describe novel mutants of Arabidopsis (Arabidopsis thaliana), named glucose insensitive growth (gig), identified by their insensitivity to high-glucose (Glc)-induced growth inhibition. The gig mutant displayed retarded growth under normal growth conditions and also showed alterations in the expression of Glc-responsive genes under high-Glc conditions. Our molecular identification reveals that GIG encodes the plastidial copper (Cu) transporter PAA1 (for P1B-type ATPase 1). Interestingly, double mutant analysis indicated that in high Glc, gig is epistatic to both hexokinase1 (hxk1) and aba insensitive4 (abi4), major regulators in sugar and retrograde signaling. Under high-Glc conditions, the addition of Cu had no effect on the recovery of gig/paa1 to the wild type, whereas exogenous Cu feeding could suppress its phenotype under normal growth conditions. The expression of GIG/PAA1 was also altered by mutations in the nuclear factors HXK1, ABI3, and ABI4 in high Glc. Furthermore, a transient expression assay revealed the interaction between ABI4 and the GIG/PAA1 promoter, suggesting that ABI4 actively regulates the transcription of GIG/PAA1, likely binding to the CCAC/ACGT core element of the GIG/PAA1 promoter. Our findings indicate that the plastidial Cu transporter PAA1, which is essential for plastid function and/or activity, plays an important role in bidirectional communication between the plastid and the nucleus in high Glc.
Gene Silencing in Arabidopsis Spreads from the Root to the Shoot, through a Gating Barrier, by Template-Dependent, Nonvascular, Cell-to-Cell Movement
Authors: Liang Dacheng , White Rosemary G. , Waterhouse Peter M. 
Published: May 2012

AbstractUpward long-distance mobile silencing has been shown to be phloem mediated in several different solanaceous species. We show that the Arabidopsis (Arabidopsis thaliana) seedling grafting system and a counterpart inducible system generate upwardly spreading long-distance silencing that travels not in the phloem but by template-dependent reiterated short-distance cell-to-cell spread through the cells of the central stele. Examining the movement of the silencing front revealed a largely unrecognized zone of tissue, below the apical meristem, that is resistant to the silencing signal and that may provide a gating or protective barrier against small RNA signals. Using a range of auxin and actin transport inhibitors revealed that, in this zone, alteration of vesicular transport together with cytoskeleton dynamics prevented or retarded the spread of the silencing signal. This suggests that small RNAs are transported from cell to cell via plasmodesmata rather than diffusing from their source in the phloem.
Barley Metallothioneins: MT3 and MT4 Are Localized in the Grain Aleurone Layer and Show Differential Zinc Binding
Authors: Hegelund Josefine Nymark , Schiller Michaela , Kichey Thomas , Hansen Thomas Hesselhøj , Pedas Pai , Husted Søren , Schjoerring Jan Kofod 
Published: May 2012

Abstract
Metallothioneins (MTs) are low-molecular-weight, cysteine-rich proteins believed to play a role in cytosolic zinc (Zn) and copper (Cu) homeostasis. However, evidence for the functional properties of MTs has been hampered by methodological problems in the isolation and characterization of the proteins. Here, we document that barley (Hordeum vulgare) MT3 and MT4 proteins exist in planta and that they differ in tissue localization as well as in metal coordination chemistry. Combined transcriptional and histological analyses showed temporal and spatial correlations between transcript levels and protein abundance during grain development. MT3 was present in tissues of both maternal and filial origin throughout grain filling. In contrast, MT4 was confined to the embryo and aleurone layer, where it appeared during tissue specialization and remained until maturity. Using state-of-the-art speciation analysis by size-exclusion chromatography inductively coupled plasma mass spectrometry and electrospray ionization time-of-flight mass spectrometry on recombinant MT3 and MT4, their specificity and capacity for metal ion binding were quantified, showing a strong preferential Zn binding relative to Cu and cadmium (Cd) in MT4, which was not the case for MT3. When complementary DNAs from barley MTs were expressed in Cu- or Cd-sensitive yeast mutants, MT3 provided a much stronger complementation than did MT4. We conclude that MT3 may play a housekeeping role in metal homeostasis, while MT4 may function in Zn storage in developing and mature grains. The localization of MT4 and its discrimination against Cd make it an ideal candidate for future biofortification strategies directed toward increasing food and feed Zn concentrations.
Non‐destructive surface analysis of accelerated corroded copper alloys
Authors: Papandreopoulos Panayiotis , Koui Maria , Yfantis Dimitrios , Theophanides Theophilos 
Published: May 2012

PurposeThe purpose of this paper is to investigate the surface corrosion products of copper alloys by non‐destructive techniques (NDT) and correlate them with their bulk composition.Design/methodology/approachSpecimens of copper alloys, whose compositions were close to those of ancient copper‐based artefacts, were left to be corroded in simulated soil solution containing ammoniacal buffering solution of pH =10 in 1:1 ratio, in order to accelerate the corrosion rate. The elemental compositions of the surface corrosion products were determined versus time using X‐Ray Fluorescence Spectroscopy, and the surface morphology by Scanning Electron Microscopy with Energy Dispersive X‐Ray Micro‐detector methods, and the results were compared to the bulk composition, as measured by Atomic Absorption Spectroscopy and Inductively Coupled Plasma Atomic Emission Spectroscopy.FindingsDuring the corrosion evolution of the copper alloys in the corrosive solution, transitional phenomena were observed such as an initial decrease of the copper concentration with a simultaneous increase of the concentrations of the secondary alloying metals (Sn, Zn and Pb). After 30‐60 immersion days, the alloy concentrations were stabilised.Originality/valueThe results of this research could contribute to the non‐destructive characterisation of copper‐based ancient artefacts (from which the taking of samples is not allowed).
Modeling cathodic prevention for unconventional concrete in salt‐laden environment
Authors: Liu Yajun , Shi Xianming 
Published: May 2012

PurposeThe purpose of this paper is to provide a modeling perspective relevant to the use of cathodic prevention (CPre) for unconventional concrete in salt‐laden environment.Design/methodology/approachBased on the experimentally obtained concrete resistivity and chloride diffusion coefficient data, numerical studies with the Nernst‐Planck equations were conducted to investigate the influence of applied voltage (magnitude, direction, and interruption), surface chloride concentration, and concrete mix design on the effectiveness of cathodic prevention and the distribution of ionic species in protected concrete.FindingsThe modeling results revealed that the direction of applied electric voltage has significant effect on the distributions of electrical potential and hydroxyl ions in the reinforced concrete, confirming the benefits of cathodic prevention in significantly increasing hydroxyl concentration near rebar and in slowing down the ingress of chloride ingress into concrete. The performance of intermittent CPre was found to be constrained by the variations in concrete resistance from the anode to the cathode. The model was also useful in illustrating the temporal and spatial evolutions on rebar surface in terms of oxygen, hydroxyl and chloride concentrations and electrical potential of top rebar, as well as such evolutions in concrete domain in terms of concrete resistivity and current density for each mix design.Originality/valueThe results reported herein shed light on the fundamental processes defining the performance of CPre for new unconventional concrete in salt‐laden environment.
Corrosion behaviour of dual‐phase and galvanized steels in concrete
Authors: Ismail Mohammad , Muhammad Bala , Hamzah Esah , Keong TanWui 
Published: May 2012

PurposeThe purpose of this paper is to present results of an evaluation of dual‐phase and galvanized steel reinforcements in corrosive environments.Design/methodology/approachLow carbon steels were intercritically annealed at 740°C followed by water quenching to obtain dual‐phase structures with 37 per cent volume fraction of martensite dispersed in ferrite matrix. Dual‐phase and galvanized steel rebars were embedded in concrete cubes and immersed in 5 per cent NaCl solution for up to 100 days. Corrosion rate, tensile and macro as well as microhardness tests were performed. The dual‐phase and galvanized zinc layers were observed under scanning electron microscopy (SEM).FindingsFrom all of the tests carried out it was found that dual‐phase steels exhibited better corrosion resistant properties and superior strength compared to galvanized steels.Originality/valueThe results reported show that dual‐phase steel can be a good candidate for reinforcement in concrete especially in aggressive and corrosive environments.
High performance protective coatings for non‐ferrous metals
Authors: Emira Hassan S. , Shakour Alia A. , Abd El Rehim Sayed S. , Saleh Inas A. , El‐Hashemy Mohammed A. 
Published: May 2012

PurposeThe purpose of this paper is to report the use of zinc phosphate pigment as a chromate substitute for coatings on non‐ferrous metals (galvanized steel, pure aluminum, α‐brass and pure copper).Design/methodology/approachPaint systems based on zinc chromate and zinc phosphate pigments were prepared. The paints were tested for their physico‐mechanical properties. Testing of the anticorrosive properties of the zinc phosphate pigment in comparison with zinc chromate pigment was carried out by accelerated corrosion exposure, i.e. immersion in 3.5 percent salt solution and exposure for one year at five outdoor stations.FindingsThe possibility of replacing chromate pigment was assessed and the “gap“ observable between the performance of zinc chromate and zinc phosphate pigments was noted.Originality/valueThe non‐toxic inhibitive pigment, zinc phosphate, incorporated into a plasticized‐chlorinated rubber binder, could be applied successfully for the protection of non‐ferrous substrates.
Libraries atwitter: trends in academic library tweeting
Authors: Del Bosque Darcy , Leif Sam A. , Skarl Susie 
Published: May 2012

PurposeThis paper aims to present an overview of how libraries are using Twitter in an academic setting.Design/methodology/approachThis study analyzed the current state of 296 Twitter accounts from a random sample of academic libraries. A total of 19 different criteria were explored, with an emphasis on the following three categories: layout and design, content and number of tweets, and account followers.FindingsOnly 34 per cent of libraries in the study had a Twitter account and characteristics varied widely among libraries, however it is evident that it is possible to successfully communicate with patrons via Twitter.Research limitations/implicationsA primary limitation for this study is the frequency with which Twitter can change.Practical implicationsThis paper provides a snapshot of how libraries are currently using Twitter, which can be of assistance to libraries seeking to implement a Twitter presence.Originality/valueThe paper presents an overview of trends in academic library Twitter accounts, which could be useful to librarians who are considering launching a Twitter account for their library.
To tweet, or not to tweet?
Authors: Jennings Susan 
Published: May 2012

PurposeThe purpose of this article is to address the question “To Tweet or Not to Tweet” – using the social networking application “Twitter” as a communication channel for academic libraries.Design/methodology/approachAs lead librarian for Desk Services at Appalachian State University's (ASU's) Belk Library and Information Commons, this article shares the author's experiences and lessons learned as the library's “Tweeter.”FindingsThe article finds that Belk Library and Information Commons says “Yes, by all means, tweet” due to the positive response that received from both Twitter as well as Facebook.Practical implicationsProvided in this article are ten helpful tips learned as the program developed at ASU. The tips are a good place to begin thinking about the implications for those libraries contemplating or beginning a social networking program.Originality/valueThe article focuses on lessons learned as social networking policies evolve over time.
Just the right tweet at just the right time
Authors: Doshi Ameet 
Published: May 2012

PurposeThis article looks at the function and the value of this Twitter as a form of communication within an academic library.Design/methodology/approachThe article is anecdotal and based on the author's experience at Georgia Tech library.FindingsIn the author's opinion, there are two recipes for mediocre tweets: first, everyone in the library gets to tweet (i.e. tweet by committee), and, second, the “I only do social media because I have to” librarian tweeting on behalf of the library. Not to be overly prescriptive, but the author feels strongly that social media, and especially Twitter, just does not work well by committee.Research limitations/implicationsThis is an essay based on experiential and anecdotal evidence, and not based on a thorough research study.Practical implicationsIt would be practical to increase library presence on Twitter in a meaningful way.Social implicationsThere should be increased engagement with library users.Originality/valueHow libraries should be organizing their social media efforts is an important and valuable question.
Beyond broadcasting
Authors: Gunton Lyndelle , Davis Kate 
Published: May 2012

PurposeThe purpose of this paper is to contribute to discourse around use of Twitter in libraries, and in particular to highlight the value of using Twitter beyond broadcast of marketing messages.Design/methodology/approachThis paper is an opinion piece designed to initiate conversations about the applications of Twitter for customer service and community building, as well as its role as a ground for information experience.FindingsThe authors suggest that libraries should look to other industries for examples of Twitter as a channel for customer service delivery. Further, they suggest that social media can aid in community building, which is a fundamental role for libraries of all types. Finally, they suggest that social media spaces are sites for information experience, and that libraries must seek to understand the nature of those information experiences if they are to harness the full potential of social media.Originality/valueThe paper highlights the value of libraries using Twitter beyond the broadcasting of marketing messages.
User perceptions of ebooks versus print books for class reserves in an academic library
Authors: Rojeski Mara 
Published: May 2012

PurposeThe purpose of this paper is to present the results of a pilot program at Dickinson College where select reserve books for a class were purchased as ebooks and linked through the course management system. The paper aims to shares the results of survey data, a focus group session, and usage statistics to evaluate the pilot.Design/methodology/approachThe study uses mixed methods with survey, focus group, and usage analysis.FindingsThe study found a much higher use of ebooks over print reserves. The survey and focus group responses also found a relatively high student satisfaction with the use of ebooks, despite some reported use problems.Practical implicationsThe results of this study offer academic libraries a new idea to consider for ebook purchases. The paper also highlights important issues to consider if purchasing ebooks to replace print reserve books.Originality/valueThis is the first study to evaluate student attitudes and use of ebook “reserve” materials.
Information literacy on Facebook: an analysis
Authors: Witek Donna , Grettano Teresa 
Published: May 2012

PurposeThis analysis, being part one of a two‐part study, aims to illustrate the attitudes and patterns users are being habituated to through the functionality of Facebook, relate them to information literate practices and behaviors, and speculate their application to information literacy instruction within an academic context. It also aims to lay the groundwork for part two, which is to be reported on in a later issue of this journal.Design/methodology/approachFor this first part of the study, the Association of College & Research Libraries (ACRL) Information Literacy Competency Standards for Higher Education have been aligned with common behaviors on Facebook, examining each standard, performance indicator, and outcome for possible parallels in common Facebook tools and behaviors. These behaviors have then been connected to the process of conducting research in an academic context.FindingsThree Facebook functions – Feeds, Share, and Comment – emerged as the primary means by which information literate practices and behaviors are developed and exhibited on Facebook. In addition, information literacy in the age of social media requires a “meta‐literacy”: a critical awareness of why we do what we do with information.Research limitations/implicationsThis analysis (part one) presents the conceptual framework on which the data collection portion of the study (part two) is based. In doing so, it lays the groundwork for a reexamination of what it means to be information literate in light of social media practices and behaviors.Originality/valueThis paper is valuable to information literacy instructors and researchers because it offers the first extended analysis that deliberately reads Facebook through the lens of the ACRL Standards.
Engaging undergraduates in discipline‐based research
Authors: Gauder Heidi , Jenkins Fred 
Published: May 2012

PurposeThis article aims to describe the standards‐based approach used to build the International Studies Research Methods (INS250) course, a discipline‐specific, credit‐based class taught by librarians. This writing‐intensive course emphasizes information literacy and critical thinking skills, which were developed using written assignments, class presentations, multiple assessment methods, and web‐based applications.Design/methodology/approachThis paper will review the literature about discipline‐specific, credit‐based information literacy (IL) courses and outcomes. It will also analyze the INS250 course structure and map ACRL Information Literacy Competency Standards for Higher Education to learning outcomes for the course.FindingsThe paper finds that, in the absence of discipline‐specific information literacy standards, the ACRL Information Literacy Competency Standards for Higher Education can serve as a starting point for International Studies course outcomes and assessment. Other assessment approaches, specifically student workshops and concept maps, promote student engagement and provide ample evidence of student learning.Originality/valueThis article will identify research skills needed by International Studies majors and students in similar multidisciplinary programs. It will serve as a model of how to build a credit‐based course with application to other fields such as political science, sustainability, human rights and international business. The course is student‐focused and responsive to new disciplines and areas, with an emphasis on disciplinary databases, search skills, and citation skills.
Fore‐cite: tactics for evaluating citation management tools
Authors: Marino William 
Published: May 2012

PurposeThe purpose of this paper is to explore a general set of criteria that can be used by librarians and information professionals for the evaluation of citation management tools.Design/methodology/approachCollection development practices found in the library world are combined with software selection criteria from the corporate sector and applied to the citation management environment. A discussion of these practices identifies general criteria, or best practices, that can be used in the evaluation of various types of citation management tools.FindingsEight criteria are discussed. Key questions are raised that can assist librarians and information professionals in the evaluation process. Additional resources that may assist with evaluation efforts are highlighted, where applicable.Originality/valueExisting attempts to evaluate citation management tools have employed an approach centering on the features and functionality of a limited set of tools. While effective, these studies neglect new developments in the citation management environment, run the risk of missing other criteria that may be important to both users and libraries, and have short life‐cycles due to the mutable nature of software updates. This study explores the larger environment in which these tools operate, and develops a macro‐assessment of the field, not tied to update schedules or specific software options.