bluuebunny/crossref_metadata_2025 huggingface dataset:
Myrmekite and strain weakening in granitoid mylonites
Authors: Ceccato Alberto , Menegon Luca , Pennacchioni Giorgio , Morales Luiz Fernando Grafulha
Published: December 2018

Abstract. At mid-crustal conditions, deformation of feldspar is mainly accommodated by a combination of fracturing, dissolution–precipitation, and reaction-weakening mechanisms. In particular, K-feldspar is reaction-weakened by the formation of strain-induced myrmekite – a fine-grained symplectite of plagioclase and quartz. Here we use electron backscattered diffraction to (i) investigate the microstructure of a granodiorite mylonite, developed at  ∼ 450 °C during cooling of the Rieserferner pluton (Eastern Alps); and (ii) assess the microstructural processes and the weakening associated with myrmekite development. Our analysis shows that the crystallographic orientation of plagioclase in pristine myrmekite was controlled by that of the replaced K-feldspar. Myrmekite nucleation resulted in both grain-size reduction and anti-clustered phase mixing by heterogeneous nucleation of quartz and plagioclase. The fine grain size of sheared myrmekite promoted grain-size-sensitive creep mechanisms including fluid-assisted grain boundary sliding in plagioclase, coupled with heterogeneous nucleation of quartz within creep cavitation pores. Flow laws, calculated for monomineralic quartz, feldspar, and quartz + plagioclase aggregates (sheared myrmekite) during deformation at 450 °C, show that grain-size-sensitive creep in sheared myrmekite accommodated strain rates several orders of magnitude higher than monomineralic quartz layers deforming by dislocation creep. Therefore, diffusion creep and grain-size-sensitive processes contributed significantly to bulk rock weakening during mylonitization. Our results have implications for modelling the rheology of the felsic middle crust.
Increased Greenland melt triggered by large-scale, year-round precipitation events
Authors: Oltmanns Marilena , Straneo Fiammetta , Tedesco Marco
Published: December 2018

Abstract. Surface melting is a major driver of Greenland's mass loss. Yet, the mechanisms that trigger melt are still insufficiently understood because seasonally-based studies blend processes initiating melt with positive feedbacks. Here, we focus on the triggers of melt by examining the synoptic atmospheric conditions associated with 313 rapid melt increases, detected in a satellite-derived melt extent product, equally distributed throughout the year over the period 1979–2012. By combining reanalysis and weather station data, we show that melt is initiated by a cyclone-driven, southerly flow of warm, moist air, which gives rise to large-scale precipitation. A decomposition of the synoptic atmospheric variability over Greenland suggests that the identified, melt-triggering weather pattern accounts for ~ 40 % of the net precipitation but increases in the frequency, duration and areal extent of the initiated melting have shifted the line between mass gain and mass loss as more melt and rainwater run off or accumulate in the snowpack. Using a regional climate model, we estimate that the initiated melting more than doubled over the investigated period, amounting to ~ 28 % of the overall surface melt and revealing that, despite the involved mass gain, year-round precipitation events are participating in the ice sheet's decline.
A Frightful Leap into Darkness: Auto-Destructive Art and Extinction
Authors: Halberstam Jack
Published: December 2018

In a new book titled Wild Things: Queer Theory After Nature, I develop a new critical vocabulary to access different, transdisciplinary ways of thinking about race, sexuality, alternative political imaginaries and queer futurity and extinction. Wildness in no way signals the untamed frontier, or the absence of modernity, the barbarian, the animalistic or the opposite of civilization. Rather, in a post-colonial and even de-colonizing vein, it has emerged in the last few years as a marker of a desire to return queerness to the disorder of an unsorted field of desires and drives; to the disorienting and disquieting signifying functions it once named and held in place; and to a set of activist and even pedagogical strategies that depend upon chance, randomness, surprise, entropy and that seek to counter the organizing and bureaucratic logics of the state with potential sites of ungovernability and abjection. Wildness signifies in my project in a number of different ways, but here I use the framework of “abjection” to explain some of the appeal of wildness and a few of the ways in which it expresses relations between the unnamable, the excessive, horror and death. Later on, I will turn to a set of performances and art projects that are deliberately auto destructive and that collectively imagine the end of the human.
Reading the Genotext in Harryette Mullen’s Muse & Drudge: “Sapphire’s lyre styles…”
Authors: Scott William
Published: December 2018

In her early work on Modernist poetry and avant-garde poetics, Julia Kristeva proposed a bifurcated view of the poetic text as simultaneously constituted by both a “genotext” and a “phenotext.”  Reading the “genotext” of any given poem might start by “pointing out the transfers of drive energy that can be detected in phonematic devices (such as the accumulation and repetition of phonemes or rhyme) and melodic devices (such as intonation or rhythm)”; and, in her words, it would also need to take into consideration “the way semantic and categorial fields are set out in syntactic and logical features.” This essay seeks to demonstrate how Harryette Mullen’s Muse & Drudge might be analyzed at the level of its genotext, taking (arbitrarily) as its primary example the first of the book’s eighty poems to illustrate how a straightforwardly genotextual analysis might proceed. The essay contends that, by closely observing the genotext of Mullen’s poetry in Muse & Drudge, one may eventually arrive at a more comprehensive understanding of the “polyvocal” and “polymorphous” nature of the language and poetic design of the poems in this enigmatic collection.
Vías de transformación en la enseñanza de lenguas con mediación tecnológica
Authors: Fernández Juncal Carmen , Hernández Muñoz Natividad
Published: December 2018

Los avances en la integración de las competencias digitales en la enseñanza de segundas lenguas en las últimas décadas han formado parte de ámbitos aislados, centrados en una lengua específica o en contextos educativos concretos. Este recorrido, asimismo, ha puesto de manifiesto diferentes barreras o dificultades en el proceso de integración de las tecnologías en el desarrollo de la enseñanza-aprendizaje que, para ser resueltas, deben afrontarse desde un paradigma ideológico y educativo renovado. El objetivo de este volumen es precisamente caminar hacia la construcción de una dimensión de trabajo global con la apertura de nuevas vías de transformación en la concepción de la enseñanza de lenguas con mediación tecnológica en un sentido amplio, desde una necesaria perspectiva multilingüe y multimodal, donde todos los participantes en el proceso puedan favorecerse de los avances realizados de una forma dinámica, constructiva y sinérgica. Todo ello responde sin duda a la necesidad de responder con soluciones adaptativas al contexto en el que se desarrolla la construcción de las sociedades actuales, incluyendo en ellas la dimensión digital multilingüe.
New Trends in Second Language Learning and Teaching through the lens of ICT, Networked Learning, and Artificial Intelligence
Authors: Kannan Jaya , Munday Pilar
Published: December 2018

In the last few decades, Information and Communications Technology (ICT) applications have been shaping the field of Computer Assisted Language Learning (CALL). Mobile Assisted Language Learning (MALL) paved the way for ubiquitous learning. The advent of new technologies in the early 21st century also added a social dimension to ICT that allowed for Networked Learning (NL). Given that language learning is fundamentally a socio-cultural experience, networked learning capabilities have provided the potential for language learning in community settings. This has revitalized the earlier frameworks provided by CALL. NL has empowered language learners today to connect globally, to access Open Educational Resources, and to self-regulate their learning processes beyond the scope of traditional curricula. In parallel, the rising pervasiveness of Artificial Intelligence (AI) applications and their relevance to language learning has led CALL to branch out into Intelligent CALL (ICALL). The first section of this article provides a brief historical overview of CALL, examines it through the lens of ICT, networked learning, and open access. The second section focuses on the implications of AI for creating new trends in second language education, the challenge for providing customization at scale, and raises important issues related to transparency and privacy for future research.
Aprende conmigo: exigencias de la era digital para las buenas prácticas en la enseñanza de segundas lenguas
Authors: Hernández Muñoz Natividad , Román-Mendoza Esperanza
Published: December 2018

Los repositorios de recursos educativos, incluidos los de buenas prácticas, han experimentado un gran desarrollo en los últimos veinte años, hasta el punto de poder ser considerados un elemento de transformación en la educación. Sin embargo, en el caso de los repositorios de buenas prácticas en segundas lenguas con mediación tecnológica, se siguen observando deficiencias en cuanto a su estructuración y organización, así como en su aprovechamiento por parte de la comunidad educativa. Estas deficiencias vienen marcadas, en gran medida, por la naturaleza diversa de los escenarios que hoy en día integran la enseñanza y el aprendizaje de segundas lenguas y los medios tecnológicos. Para afrontar estos retos, el presente artículo parte de un análisis de la evolución de los sistemas de almacenamiento, acceso y recuperación de recursos educativos abiertos. A continuación, se propone una redefinición del concepto de buena práctica basándose en la naturaleza dinámica de los nuevos contextos de enseñanza como parte de los cambios culturales y educativos de la era digital, donde el translingüismo, la multimodalidad, la autonomía y las competencias digitales del aprendiz son elementos clave. Como consecuencia de todo ello, se revisa y amplía lo que tradicionalmente se considera aprendizaje mediación tecnológica a partir del análisis de experiencias concretas. Por último, el artículo proporciona una serie de pautas para que esta reconceptualización del marco teórico se materialice en un aprovechamiento de los recursos más participativo e integrador.
Organoleptic, Physical and Microbiological Characteristics of Eggs Consumed in Dakar (Senegal)
Authors: Doutoum Abdelsalam Adoum , Tidjani Abdelsalam , Doungous Djamalladine Mahamat , Abba Hamadou , Ndiaye Alioune , Faye Coumba , Moukhtar Roumane , Somda Marius K. , Seydi Malang , Toguebaye Bhen Sikina , Traore Alfred S.
Published: December 2018

The evaluation of the commercial quality and freshness of consumer eggs in Dakar, Senegal, involved 1,000 egg samples. The values of the physical parameters showed that the eggs had an average weight of 60.3g and the average age of 7.6 days. The majority of eggs had an oval shape (98.1%), 76.8% of eggs are clean against 23.2% dirty and 93.4% of the shells are intact against 6.6% rugged. On the other hand, 18.3% of the eggs have a spread albumen, 7.2% of the whites have foreign bodies, 5% have stains and no color and odor anomalies with a pH ranging from 8 to 9, 5. 21.4% of egg yolks are flattened, 86.6% of normal color, 10.4% have stains, no embryo development and no odor anomaly with a pH ranging from 5.7 to 6.5.100 eggs were microbiologically tested. The results showed that this food is contaminated internally by Salmonella (1%), E.coli (1%), Proteus (1%), Listeria (2%) and externally by Salmonella (2%). E. coli (4%), Proteus (3%), Staphyloccocus (5%).
A linguagem e a experiência humana em serviço de teleatendimento
Authors: Valerio Patricia Da Silva
Published: December 2018

Este texto, apresentado e discutido durante a realização do II Colóquio de leituras em Émile Benveniste, propôs-se a refletir sobre uma experiência, muitas vezes frustrante, de usuários de serviços eletrônicos de teleatendimento. A reflexão toma por base alguns textos do linguista sírio, em especial, o artigo A linguagem e a experiência humana, publicado em Problemas de Linguística Geral II (1989), para analisar a dificuldade de um locutor, que origina uma ligação telefônica a uma central de serviços, encontrar um outro (tu real) com quem possa construir uma relação intersubjetiva, condição do discurso, em razão da substituição de funcionários por gravações automáticas de vozes.
A criança e sua relação com a interdição: a mobilização de arranjos discursivos particulares
Authors: Diedrich Marlete Sandra
Published: December 2018

Neste artigo, reflete-se sobre o caráter de interdição que marca a relação do falante com a língua, o que envolve os conceitos de cultura e sociedade. Faz-se um deslocamento da temática trabalhada por Benveniste em A blasfemia e a eufemia para se discutir como a criança vive essa relação de interdição desde muito cedo e encontra, ao longo de sua experiência, modos de lidar com ela, os quais se expressam por meio de determinados arranjos particulares no discurso.
Factor VII Deficiency in Systemic Primary Amyloidosis: A Rare Case
Authors: Ersoy Dursun Fadime , Akyar Erdal , Uygun Gokhan , Baslar Zafer , Cobanoglu Bengu
Published: December 2018

Introduction: Isolated and combined factor deficiencies are known to occur in systemic primary amyloidosis. The most common factor deficiency known in these cases is isolated factor X deficiency. Other factor deficiencies are relatively less frequent. Isolated factor VII deficiency occurs very rarely in cases of systemic primary amyloidosis.Case report: A 58-year-old male patient previously presenting to another health center with complaints of generalized edema, fatigue, and itching had proteinuria and then he was diagnosed with systemic primary amyloidosis after the renal biopsy for proteinuria etiology. The patient’s laboratory tests showed prolongation of prothrombin time and factor VII deficiency. The patient responded well to the treatment for primary amyloidosis and factor VII deficiency.Discussion: In cases of systemic primary amyloidosis, if the etiology of prolonged prothrombin time involves no liver disease, warfarin use, or malabsorption, physicians should always keep in mind rare factor deficiencies such as factor VII deficiency, along with common factor deficiencies.
An Analysis of Trends in Foreign Direct Investment Inflows to Africa
Authors: Marandu Edward E. , Mburu Paul T. , Amanze Donatus
Published: December 2018

This study examines the trends in Foreign Direct Investment (FDI) inflows to Africa, with the ultimate aim of proposing implications for policy action. The main source of data for this study is the UNCTAD (2018) database which at the time of the study contained FDI data from 1990 to 2016. The findings show that, although Africa is in dire need for FDI due to scarcity of capital, it is not able to attract as much FDI compared to advanced countries and other developing regions. The little FDI that comes to Africa is concentrated sub-regionally and country-wise. Region-wise, most FDI is concentrated on Southern Africa followed by Northern Africa with East Africa and Central Africa at the bottom. Country-wise, the two main recipients of FDI in each sub-region are Angola and South Africa (Southern Africa); Egypt and Morocco (North Africa); Nigeria and Ghana (West Africa); Tanzania and Ethiopia (East Africa) and Congo and the Democratic Republic of Congo (Central Africa). The FDI that comes into the continent is further concentrated in the primary (extractive) sector. As a result the benefits to the region have not been as significant as in East Asia where FDI was mainly into the secondary (manufacturing) sector. It is concluded that, FDI is a growth point that countries can count on as a source of resources for development, however, Africa need to change the approach adopted in promoting FDI, which focuses on providing incentives to creating a domestic environment conducive to entrepreneurship and business in general.
The Relationship between Life Satisfaction and Academic Performance: An Example of Sports Science
Authors: Caz Çağdaş , Tanyeri Levent
Published: December 2018

Everyday stress, happiness, health status and individual characteristics affect life satisfaction, which, in turn, affectsome other factors. Therefore, high life satisfaction in academics affects their academic performance positively. Theaim of this study is to examine the relationship between sports science academics’ life satisfaction and academicperformance. Study sample consisted of 188 male and 151 female sports science academics working in differentregions. Data were collected using the “Contentment with Life Assessment Scale” (CLAS) developed by Lavallee,Hatch, Michalos & McKinley (2007), and adapted to Turkish language by Akın and Yılmaz (2015), and the“Perceived Academic Performance Scale” developed by Gür (2017). Data were analyzed using descriptive statistics,t-test, one-way variance analysis (ANOVA), Tukey multiple comparison test and correlation test. Results show thatmale academics have better academic performance than female academics. Results show no statistically significantrelationship between life satisfaction and academic performance.
Voltammetry of Suspensions of Polyaniline-coated Graphene Composites
Authors: Chen Jingyuan , Zeng Xiangdong , Aoki Koichi , Nishiumi Toyohiko
Published: December 2018

Flaky particles of polyaniline (PANI)-graphene (GN) with rectangular size of 1.0-1.5 mm are dispersed in aqueous solution so that their suspension is stable for one day without aggregation. The weight fraction of PANI in the particle is 75 %, which is independent of the loaded fraction of PANI in the synthesis. The PANI-GN film made of the suspension forms a self-standing, elastic, conductive film. The PANI-GN suspension exhibits both the reduction and the oxidation waves at potentials similar to those of PANI adsorbed on an electrode, whereas the PANI-GO suspension shows only the voltammetric reduction wave. The redox peak currents are controlled by diffusion of PANI-GN flakes. The PANI-GN film cast on the electrode shows voltammetric peaks for PANI, of which redox charge is larger than that of the electrochemically polymerized PANI film with the common weight of PANI. This fact can be explained in terms of the electrochemically exhaustive oxidation of PANI through the electric conduction of GN.
Seroprevalence of Hydatidosis in Kaboodarahang, Hamadan Province, Iran, in 2016 - 2017
Authors: Barati Rostam , Sharifi-Sarasiabi Khojasteh , Hamedi Yaghoob , Matini Mohammad , Shamseddin Jebreil
Published: December 2018

Background: Cystic echinococcosis (CE) or hydatid cyst as a significant zoonotic disease caused by Echinococcus spp. is endemic in Iran. The present study was carried out to clarify the status of hydatidosis in Kaboodarahang, Hamadan province. Objectives: This descriptive cross-sectional study aimed to investigate the prevalence of the hydatid cyst seroepidemiology in Hamadan province, Iran. Hamadan province was chosen due to its wide range of livestock breeding and human exposure to stray dogs. We studied the seroprevalence of the parasite and infection risks. Methods: In this cross-sectional study, overall 1232 serum samples (524 frommales and 708 from females) were collected by randomized cluster sampling in 2016 - 2017. The sera were analyzed by the enzyme-linked immunosorbent assay (ELISA) using IgG ELISA kits. Before taking the specimens, a questionnaire was filled out for each enrolled patient. The data were analyzed using the Chi-square test and multivariate logistic regression for risk factors analysis. Results: The seropositivity was 1% (12 cases including four males and eight females). No significant difference was seen according to gender (P = 0.51). There was no significant association between CE seropositivity and age group, occupation, and region, but the association between keeping a dog (in the house or workplace) and a positive IgG test was statistically significant (P = 0.02). Conclusions: Although the seroprevalence of CE was relatively low in Hamadan province, yet, due to the importance of the disease and zoonotic feature of the organism, all preventive measures should be taken into consideration.
Coronary Artery Involvement Kawasaki Disease Versus Non-Kawasaki Febrile Diseases in Children Attending a Pediatric Hospital in Bandar Abbas
Authors: Rajaei Shahrokh , Adibi Pantea , Rahmati Mohammad Bagher , Ahmadi Mehran , Rastegar Maziar
Published: December 2018

Background: Kawasaki disease (KD) is one of the main causes of acquired heart disease. Due to the fact that there is no prospective study regarding the involvement of coronary arteries in patients with non-KD febrile diseases. Objectives: The aim of this study was to compare coronary artery changes between non-KD febrile children and patients with (complete) KD who were hospitalized. Methods: This study was performed on 56 patients aged one month to eight years (26 KD cases and 30 non-KD febrile cases) admitted to the Bandar Abbas Pediatric Hospital. After obtaining parental or guardian consent, demographic data, coronary artery involvement, and lab tests were recorded. Chi-square and Student’s t-test were used to compare the recorded data. Results: We found that coronary artery involvement was significantly higher in KD cases (50% vs. 6.7%), especially left coronary artery (LCA) dilatation (30.8 % vs. 3.3%) and right coronary artery (RCA) brightness (11.5% vs. 0%) were significantly higher in KD cases compared to non-KD febrile cases (P = 0.05). Meanwhile, we found that in both non-KD febrile cases and KD cases with WBC ≥ 15 109 /L the risk of abnormal findings increased. Conclusions: These findings suggests that non-KD febrile children, especially those with WBC ≥ 15 (109 /L), as well as all KD cases should undergo echocardiography five to six days after the onset of the illness.
Causality in the Polish Housing Market: Evidence from Biggest Cities
Authors: Drachal Krysztof
Published: December 2018

The aim of the paper is to examine the causal relationship between the real property prices in biggest Polish cities within VAR model framework. Both offer and transactional prices are used. Existing stock market, as well as primary market are analysed. The data are quarterly and taken from 17 biggest Polish cities. The analysed period is 2006-2015. Both VAR and VECM approaches were applied. Their limitations and possible predictions were discussed. A significant interaction between various regional real estate markets in Poland has been observed. However, the leading role of the capital city could not be confirmed by the methodology used.
In Vivo and Ex Vivo Microscopy: Moving Toward the Integration of Optical Imaging Technologies Into Pathology Practice
Authors: Wells Wendy A. , Thrall Michael , Sorokina Anastasia , Fine Jeffrey , Krishnamurthy Savitri , Haroon Attiya , Rao Babar , Shevchuk Maria M. , Wolfsen Herbert C. , Tearney Guillermo J. , Hariri Lida P.
Published: December 2018

The traditional surgical pathology assessment requires tissue to be removed from the patient, then processed, sectioned, stained, and interpreted by a pathologist using a light microscope. Today, an array of alternate optical imaging technologies allow tissue to be viewed at high resolution, in real time, without the need for processing, fixation, freezing, or staining. Optical imaging can be done in living patients without tissue removal, termed in vivo microscopy, or also in freshly excised tissue, termed ex vivo microscopy. Both in vivo and ex vivo microscopy have tremendous potential for clinical impact in a wide variety of applications. However, in order for these technologies to enter mainstream clinical care, an expert will be required to assess and interpret the imaging data. The optical images generated from these imaging techniques are often similar to the light microscopic images that pathologists already have expertise in interpreting. Other clinical specialists do not have this same expertise in microscopy, therefore, pathologists are a logical choice to step into the developing role of microscopic imaging expert. Here, we review the emerging technologies of in vivo and ex vivo microscopy in terms of the technical aspects and potential clinical applications. We also discuss why pathologists are essential to the successful clinical adoption of such technologies and the educational resources available to help them step into this emerging role.
In Vivo and Ex Vivo Microscopy: A Business Plan to Justify the Introduction of Similar Emerging Technologies Into Pathology Practice
Authors: Wells Wendy A. , Harhen Michael T. , Thrall Michael J. , Shevchuk Maria M. , Tearney Guillermo J. , Hariri Lida P.
Published: December 2018

Context.—

Our patients are now demanding value for their medical diagnoses and treatment in terms of optimal costs, quality, and outcomes. The financial justification for the introduction of new emerging technologies that may better meet these needs will depend on many factors, even if there is an established reimbursement code. In vivo and ex vivo microscopic technologies (IVM and EVM, respectively) will be used as examples of potentially transforming technologies.

Objective.—

To describe the components of a business plan that ensures all of the ramifications of introducing a new technology into pathology practice have been considered. As well as the financial justification, such a plan should include strategic vision and congruence, the advantages and drawbacks of introducing such technology, and how plans for marketing, implementation, and verification can be operationalized.

Data Sources.—

Unlike many pathologists, administrative directors in clinical laboratories already know the components of a financially sound business plan. In addition to the financial justifications, other considerations of such a plan include expense reductions, multiyear buildups in revenue generation, the replacement of other technologies, improved productivity and workflows, additional space, new capital, retrained personnel, and the impact on other departments.

Conclusions.—

Pathologists will learn a business plan format to improve their confidence in making the sound financial justifications needed to consider the introduction of an emerging technology into pathology practice, even when there is initially no obvious revenue stream because formal reimbursement codes have not been established.
Salmos 32:11-36:7 y 78:25-81:2: nuevos fragmentos de la Biblia castellana romanceada del monasterio de Santa María de la Sisla
Authors: Avenoza Vera Gemma
Published: December 2018

The study of archival collections from medieval religious orders has made it possible to locate a second fragment of amedieval Spanish Bible, from the Hieronymian monastery of Santa María de la Sisla (Toledo). It is a bifolia from the bookof Psalms that belonged to the same codex as the recently identified Ezekiel fragment (=S1). In this article the finding isreported, the liber tradens is described, specifying its meaning and value to ensure monastery rents, the fragments that ittransmits are given: part of a bifolia in parchment of the s. XIII and biblical bifolia that serves as cover, focusing especiallyon the description of this second fragment (= S2). Next, the relationships between S2 and Esc. I-I-3 are examined, afiliation hypothesis and, finally, a palaeographic transcription of the text are offered.
Joan Roís de Corella, La Istòria de Leànder y Hero: edizione critica con studio introduttivo
Authors: Annicchiarico Annamaria
Published: December 2018

This contribution is a further partial anticipation of the critical edition of the mythological faules by Joan Roís de Corella(15th century) for Editorial Barcino, following a previous one also appeared in Magnificat CLM (3, 2016). It focuses onone of Corella's most mature and significant faules, as well as one of the most prestigious testimonies both of the presence of the myth of Hero and Leander in the Iberian 15th century, and of the peninsular reception of the Heroides. The paper has two parts. The first part, Introduction, summarizes the current situation of the studies related to the Istòria. Next, an analysis of the literary memory that supports the faula’s discursive construction is provided, aiming to demonstrate how it actualizes a game of mirroring, projections, refractions, intertextual references, and symbolic-allusive evocations that make res and characters the revival of a plurality of classical and medieval models. Such a revival becomes loaded of a new pathetic energy. Our analysis is based on certain thematic words and specific topical-rhetorical matrixes, reused either a lo profano or a lo divino, always within the idea of “dying together" and of love beyond death. It focuses on the communication strategies through which this ficció sentimental’s text (a point of convergence for thematic, metaphorical and figural weaving, anchored to the Tristanian, lyrical-amorous, ausiasmarquiana, cancioneril and Passionist imagery of planctus virginis) transforms memory and reuses it into an invention. The second part of the paper is the critical edition of the text. Anticipated by the Criteria of Edition, it contains the Text, with footnotes concerning the constitutio textus, and the Critical Apparatus.
Differential expression of the glucose transporter gene glcH in response to glucose and light in marine picocyanobacteria
Authors: Moreno-Cabezuelo José Ángel , López-Lozano Antonio , Díez Jesús , García-Fernández José Manuel
Published: December 2018

Background

Our team discovered that Prochlorococcus can take up glucose, in a process that changes the transcriptional pattern of several genes involved in glucose metabolization. We have also shown that glcH encodes a very high affinity glucose transporter, and that glucose is taken up by natural Prochlorococcus populations. We demonstrated that the kinetic parameters of glucose uptake show significant diversity in different Prochlorococcus and Synechococcus strains. Here we tested whether the transcriptional response of glcH to several glucose concentrations and light conditions was also different depending on the studied strain.

Methods

Cultures were grown in the light, supplemented with five different glucose concentrations or subjected to darkness, and cells harvested after 24 h of treatment. qRT-PCR was used to determine glcH expression in four Prochlorococcus and two Synechococcus strains.

Results

In all studied strains glcH was expressed in the absence of glucose, and it increased upon glucose addition to cultures. The changes differed depending on the strain, both in the magnitude and in the way cells responded to the tested glucose concentrations. Unlike the other strains, Synechococcus BL107 showed the maximum glucose uptake at 5 nM glucose. Darkness induced a strong decrease in glcH expression, especially remarkable in Prochlorococcus MIT9313.

Discussion

Our results suggest that marine picocyanobacteria are actively monitoring the availability of glucose, to upregulate glcH expression in order to exploit the presence of sugars in the environment. The diverse responses observed in different strains suggest that the transcriptional regulation of glucose uptake has been adjusted by evolutive selection. Darkness promotes a strong decrease in glcH expression in all studied strains, which fits with previous results on glucose uptake in Prochlorococcus. Overall, this work reinforces the importance of mixotrophy for marine picocyanobacteria.
The roles of vision and antennal mechanoreception in hawkmoth flight control
Authors: Dahake Ajinkya , Stöckl Anna L , Foster James J , Sane Sanjay P , Kelber Almut
Published: December 2018

Flying animals need continual sensory feedback about their body position and orientation for flight control. The visual system provides essential but slow feedback. In contrast, mechanosensory channels can provide feedback at much shorter timescales. How the contributions from these two senses are integrated remains an open question in most insect groups. In Diptera, fast mechanosensory feedback is provided by organs called halteres and is crucial for the control of rapid flight manoeuvres, while vision controls manoeuvres in lower temporal frequency bands. Here, we have investigated the visual-mechanosensory integration in the hawkmoth Macroglossum stellatarum. They represent a large group of insects that use Johnston’s organs in their antennae to provide mechanosensory feedback on perturbations in body position. Our experiments show that antennal mechanosensory feedback specifically mediates fast flight manoeuvres, but not slow ones. Moreover, we did not observe compensatory interactions between antennal and visual feedback.
A repressor-decay timer for robust temporal patterning in embryonic Drosophila neuroblast lineages
Authors: Averbukh Inna , Lai Sen-Lin , Doe Chris Q , Barkai Naama
Published: December 2018

Biological timers synchronize patterning processes during embryonic development. In the Drosophila embryo, neural progenitors (neuroblasts; NBs) produce a sequence of unique neurons whose identities depend on the sequential expression of temporal transcription factors (TTFs). The stereotypy and precision of NB lineages indicate reproducible TTF timer progression. We combine theory and experiments to define the timer mechanism. The TTF timer is commonly described as a relay of activators, but its regulatory circuit is also consistent with a repressor-decay timer, where TTF expression begins when its repressor decays. Theory shows that repressor-decay timers are more robust to parameter variations than activator-relay timers. This motivated us to experimentally compare the relative importance of the relay and decay interactions in vivo. Comparing WT and mutant NBs at high temporal resolution, we show that the TTF sequence progresses primarily by repressor-decay. We suggest that need for robust performance shapes the evolutionary-selected designs of biological circuits.
Molecular basis of signaling specificity between GIRK channels and GPCRs
Authors: Touhara Kouki K , MacKinnon Roderick
Published: December 2018

Stimulated muscarinic acetylcholine receptors (M2Rs) release Gβγ subunits, which slow heart rate by activating a G protein-gated K+ channel (GIRK). Stimulated β2 adrenergic receptors (β2ARs) also release Gβγ subunits, but GIRK is not activated. This study addresses the mechanism underlying this specificity of GIRK activation by M2Rs. K+ currents and bioluminescence resonance energy transfer between labelled G proteins and GIRK show that M2Rs catalyze Gβγ subunit release at higher rates than β2ARs, generating higher Gβγ concentrations that activate GIRK and regulate other targets of Gβγ. The higher rate of Gβγ release is attributable to a faster G protein coupled receptor – G protein trimer association rate in M2R compared to β2AR. Thus, a rate difference in a single kinetic step accounts for specificity.
Creating Structured Linked Data to Generate Scholarly Profiles: A Pilot Project using Wikidata and Scholia
Authors: Lemus-Rojas Mairelys , Odell Jere D.
Published: December 2018

INTRODUCTION Wikidata, a knowledge base for structured linked data, provides an open platform for curating scholarly communication data. Because all elements in a Wikidata entry are linked to defining elements and metadata, other web systems can harvest and display the data in meaningful ways. Thus, Wikidata has the capacity to serve as the data source for faculty profiles. Scholia is an example of how third-party tools can leverage the power of Wikidata to provide faculty profiles and bibliographic, data-driven visualizations. DESCRIPTION OF PROGRAM In this article, we share our methods for contributing to Wikidata and displaying the data with Scholia. We deployed these methods as part of a pilot project in which we contributed data about a small but unique school on the Indiana University-Purdue University Indianapolis (IUPUI) campus, the IU Lilly Family School of Philanthropy. NEXT STEPS Following the completion of our pilot project, we aim to find additional methods for contributing large data collections to Wikidata. Specifically, we seek to contribute scholarly communication data that the library already maintains in other systems. We are also facilitating Wikidata edit-a-thons to increase the library’s familiarity with the knowledge base and our capacity to contribute to the site.
Characterization and comparative genomic analysis of virulent and temperateBacillus megateriumbacteriophages
Authors: Sharaf Abdoallah , Oborník Miroslav , Hammad Adel , El-Afifi Sohair , Marei Eman
Published: December 2018

Next-Generation Sequencing (NGS) technologies provide unique possibilities for the comprehensive assessment of the environmental diversity of bacteriophages. SeveralBacillusbacteriophages have been isolated, but very fewBacillus megateriumbacteriophages have been characterized. In this study, we describe the biological characteristics, whole genome sequences, and annotations for two new isolates of theB. megateriumbacteriophages (BM5 and BM10), which were isolated from Egyptian soil samples. Growth analyses indicated that the phages BM5 and BM10 have a shorter latent period (25 and 30 min, respectively) and a smaller burst size (103 and 117 PFU, respectively), in comparison to what is typical forBacillusphages. The genome sizes of the phages BM5 and BM10 were 165,031 bp and 165,213 bp, respectively, with modular organization. Bioinformatic analyses of these genomes enabled the assignment of putative functions to 97 and 65 putative ORFs, respectively. Comparative analysis of the BM5 and BM10 genome structures, in conjunction with otherB. megateriumbacteriophages, revealed relatively high levels of sequence and organizational identity. Both genomic comparisons and phylogenetic analyses support the conclusion that the sequenced phages (BM5 and BM10) belong to different sub-clusters (L5 and L7, respectively), within the L-cluster, and display different lifestyles (lysogenic and lytic, respectively). Moreover, sequenced phages encode proteins associated withBacilluspathogenesis. In addition, BM5 does not contain any tRNA sequences, whereas BM10 genome codes for 17 tRNAs.
Posture similarity index: a method to compare hand postures in synergy space
Authors: Bhatt Nayan , SKM Varadhan
Published: December 2018

Background

The human hand can perform a range of manipulation tasks, from holding a pen to holding a hammer. The central nervous system (CNS) uses different strategies in different manipulation tasks based on task requirements. Attempts to compare postures of the hand have been made for use in robotics and animation industries. In this study, we developed an index called the posture similarity index to quantify the similarity between two human hand postures.

Methods

Twelve right-handed volunteers performed 70 postures, and lifted and held 30 objects (total of 100 different postures, each performed five times). A 16-sensor electromagnetic tracking system captured the kinematics of individual finger phalanges (segments). We modeled the hand as a 21-DoF system and computed the corresponding joint angles. We used principal component analysis to extract kinematic synergies from this 21-DoF data. We developed a posture similarity index (PSI), that represents the similarity between posture in the synergy (Principal component) space. First, we tested the performance of this index using a synthetic dataset. After confirming that it performs well with the synthetic dataset, we used it to analyze the experimental data. Further, we used PSI to identify postures that are “representative” in the sense that they have a greater overlap (in synergy space) with a large number of postures.

Results

Our results confirmed that PSI is a relatively accurate index of similarity in synergy space both with synthetic data and real experimental data. Also, more special postures than common postures were found among “representative” postures.

Conclusion

We developed an index for comparing posture similarity in synergy space and demonstrated its utility by using synthetic dataset and experimental dataset. Besides, we found that “special” postures are actually “special” in the sense that there are more of them in the “representative” postures as identified by our posture similarity index.
Interacción discursiva y fórmulas de tratamiento en las respuestas de los hoteles a las opiniones de viajeros
Authors:   Universitat de València (España), Sanmartín Sáez Julia
Published: December 2018

Este artículo analiza la diversidad de fórmulas de tratamiento autorreferenciales y vocativas, empleadas por los responsables de 40 hoteles al responder en el buscador de alojamientos TripAdvisor a las opiniones de sus clientes. Se pretende determinar cómo la singularidad de este cibergénero del turismo 2.0, opinión-respuesta, con su tenor funcional y papeles discursivos, incide en la selección de estas fórmulas, categorizadas como estrategias pragmalingüísticas que acentúan la distancia o proximidad entre los interlocutores. Como segundo objetivo, se comprueba si la categoría del hotel y su ubicación en España o en Argentina repercuten también en el empleo de estas fórmulas. Se concluye que el tipo de género discursivo y la categoría del hotel se convierten en parámetros importantes que condicionan su uso.
El rol de las fórmulas de tratamiento en blogs y foros religiosos: hacia una horizontalidad dialógica digital
Authors:   Pontificia Universidad Católica de Valparaíso (Chile), Varas Magaly , Vásquez-Rocca Liliana ,   Pontificia Universidad Católica de Valparaíso (Chile)
Published: December 2018

Las nuevas prácticas discursivas digitales, eminentemente dialógicas, presentan un desafío para los discursos verticales, los que se definen por tener una voz poseedora de un saber privilegiado que envía información a un grupo receptor pasivo. Uno de los más prototípicos de estos es el discurso religioso, que tradicionalmente se ha caracterizado por que el locutor es una voz autorizada y autoritaria, quien se apropia de la voz de Dios, restringiendo el intercambio comunicativo, lo que pone de manifiesto la forma en que se ejerce el poder entre los participantes, es decir, determina una relación asimétrica de cercanía. El nuevo espacio público virtual permite la configuración de mecanismos discursivos interactivos en el discurso religioso posiblemente diferentes a los medios tradicionales, por lo que buscamos describir las relaciones de poder y solidaridad, y el uso de la palabra autoritaria que denotan las fórmulas de tratamiento (mecanismos apelativos) que se utilizan en el discurso religioso digital de dos credos (protestante y católico) a través de una metodología mixta que integra elementos cuantitativos con la visión cualitativa. Tras el análisis, los hallazgos indican una tendencia hacia una comunicación más horizontal que podría estar dada por dos razones: la primera está anclada en la participación más activa de los fieles en la construcción y mantención de creencias, interacción que tiende a velar la voz autorizada, y la segunda es que podría ser una consecuencia del tipo de plataforma, aunque el foro posibilitaría una comunicación más horizontal que el blog.
Variación sociolingüística del voseo verbal chileno en interacciones escritas en la Biografía Facebook
Authors:   Pontificia Universidad Católica de Valparaíso (Chile), Cautín-Epifani Violeta , Rivadeneira Valenzuela Marcela ,   Universidad Católica de Temuco (Chile)
Published: December 2018

El análisis del uso del voseo verbal se lleva a cabo a partir de Biografías Facebook en función de las variables sociolingüísticas edad y sexo. Concretamente, se analizó un corpus compuesto por mensajes escritos en la Biografía Facebook de 90 sujetos, provenientes de la provincia de Iquique (Chile), en un periodo de 30 días. Los resultados muestran que el empleo de voseo chileno en este medio se correlaciona con la variable edad, siendo los grupos más jóvenes los que más usan voseo verbal en sus intervenciones. En relación con la variable sexo, nuestros análisis no muestran diferencias significativas entre los grupos de hombres y mujeres.
Análise Prospectiva da Patente “Processo para a Aplicação da Biomineralização na Melhoria de Solos” – PI 1001279-6: estudo de viabilidade de patente brasileira por meio de informetria
Authors: Santos Líbia Cristina Xavier , Andreato Neiane da Silva Azevedo , Anjos Sérgio Saraiva Nazareno dos , Ferreira Eduardo Antonio , Gris Eliana Fortes , Martin Adriana Regina
Published: December 2018

Desenvolvimento sustentável é um tema estratégico e consiste em ações de crescimento econômico preservando o meio ambiente. O mercado de construção civil é um dos que tendem a crescer sob essa ótica e, neste sentido, a patente “Processo para a aplicação da biomineralização na melhoria de solos”, cuja titular é a Universidade de Brasília (UnB), é uma tecnologia que se apresenta como alternativa ambiental para melhorias na mecânica de solos de forma sustentável. Assim o objetivo deste estudo foi apresentar uma análise prospectiva da patente por meio de informetria para indicação do grau de maturidade tecnológica e de competitividade da patente no mercado pretendido, a fim de proceder à avaliação da viabilidade patentária. A análise demonstrou que as tecnologias neste mercado estão maduras, que a patente da UnB tem grau baixo de maturidade e, portanto, baixo caráter estratégico, embora possua um caráter inovador e um alto grau de sustentabilidade ambiental.
Tuning the Potential of Electron Extraction from Microbes with Ferrocene‐Containing Conjugated Oligoelectrolytes
Authors: McCuskey Samantha R. , Rengert Zachary D. , Zhang Mengwen , Helgeson Matthew E. , Nguyen Thuc‐Quyen , Bazan Guillermo C.
Published: December 2018

Synthetic systems that facilitate electron transport across cellular membranes are of interest in bio‐electrochemical technologies such as bio‐electrosynthesis, waste water remediation, and microbial fuel cells. The design of second generation redox‐active conjugated oligoelectrolytes (COEs) bearing terminal cationic groups and a π‐delocalized core capped by two ferrocene units is reported. The two COEs, DVFBO and F4‐DVFBO, have similar membrane affinity, but fluorination of the core results in a higher oxidation potential (422 ± 5 mV compared to 365 ± 4 mV vs Ag/AgCl for the neutral precursors in chloroform). Concentration‐dependent aggregation is suggested by zeta potential measurements and confirmed by cryogenic transmission electron microscopy. When the working electrode potential (ECA) is poised below the oxidation potential of the COEs (ECA = 200 mV) in three‐electrode electrochemical cells containing Shewanella oneidensis MR‐1, addition of DVFBO and F4‐DVFBO produces negligible biocurrent enhancement over controls. At ECA = 365 mV, DVFBO increases steady‐state biocurrent by 67 ± 12% relative to controls, while the increase with F4‐DVFBO is 30 ± 5%. Cyclic voltammetry supports that DVFBO increases catalytic biocurrent and that F4‐DVFBO has less impact, consistent with their oxidation potentials. Overall, electron transfer from microbial species is modulated via tailoring of the COE redox properties.