bluuebunny/crossref_metadata_2025 huggingface dataset:
Sediments and Water Column Contamination by Heavy Metals in Ekulu River, Nigeria: Ecological and Human Health Risk Assessment
Authors: Ugochukwu Uzochukwu Cornelius , Onuora Onyechi Henry , Agu Chizoba , Leonard Kurumeh , Ewoh John C. , Ezeasor Iyke , Onuorah Amaka Lynda
Published: February 2019

Acid mine drainage from a defunct coal mine, agricultural run-off and indiscriminate waste disposal constitute major threat to the quality of Ekulu river of Enugu State, Nigeria. In this study, Ekulu river sediments and water column pollution by heavy metals and the associated ecological and human health exposure risks were assessed. The heavy metals were measured using atomic absorption spectrometry. The parameters used in assessing the pollution of the sediments were contamination factor, contamination degree, geochemical accumulation index and pollution load index whereas the ecological risk of the heavy metals in the sediments was assessed using potential ecological risk index. The parameters employed in assessing the carcinogenic and non-carcinogenic risks of exposure by humans to the heavy metals were hazard index and risk index. The results obtained indicate that the chromium and lead input into the sediments around the defunct coal mine area during the wet season was significant and most probably due to the discharge of acid coal mine drainage into the river. Elevated values of ecological and human health exposure risks around 4 km distance away (Damija) from the defunct coal-mine area are most likely due to anthropogenic activities.
Genetic variability of charophyte algae in the Baltic Sea area
Authors: Nowak Petra , Schubert Hendrik
Published: February 2019

The Baltic Sea, a young habitat in geological terms, is characterised by strong climatic and salinity gradients that determine species distribution and trigger adaptation processes. The aim here was to test the hypothesis that Baltic Sea charophytes which originate from large freshwater populations exhibit a higher genetic variability than euryhaline charophyte species, restricted to a small number of brackish-marine populations. For this, genetic variability of euryhaline, mesohaline and halotolerant freshwater charophytes with different distribution patterns and population sizes were analysed. Euryhaline Lamprothamnium papulosum, restricted to a few and small populations in the Baltic Sea, showed a complete lack of genetic variability. Also euryhaline Tolypella with large and widely distributed populations displayed only low genetic variability. On the other hand, mesohaline Chara canescens, one of the most common charophytes in the Baltic Sea, exhibited comparatively high genetic variability, in spite of its parthenogenetic mode of reproduction. Halotolerant Chara baltica, originating from freshwater ancestors with a huge number of populations all over Europe, showed a rather restricted genetic variability, indicating a habitat filter acting prior to colonisation of brackish habitats.
Fucus vesiculosus adapted to a life in the Baltic Sea: impacts on recruitment, growth, re-establishment and restoration
Authors: Kautsky Lena , Qvarfordt Susanne , Schagerström Ellen
Published: February 2019

Fucus vesiculosus is common both on the tidal coasts of the North Atlantic and in the Baltic Sea, where it has adapted to low salinity and nontidal conditions over the last 7000 years. During the late 1970s and early 1980s, extensive declines of F. vesiculosus populations were reported in the Baltic Proper, mainly attributed to high nutrient loads. During the past 30–40 years, considerable efforts have been made to reduce nutrient runoff to coastal areas but few successful initiatives to restore F. vesiculosus populations have been performed. In this paper, we present how substratum manipulation, i.e. clean rocky surfaces, brushing rocks, Hildenbrandia rubra cover and different filamentous algae, as well as different algal exudates, affect the recruitment and survival of juvenile F. vesiculosus. Further, we show through a 5-year field experiment that it will take at least 4–5 years to reach reproductive age for F. vesiculosus in the Baltic Sea. We also present transplantation studies from two different areas, showing that epiphytic load, light, grazing and type of substratum are some of the factors that need to be taken into consideration in order to achieve successful restoration of F. vesiculosus.
Passive and active targeting in cancer therapy by liposomes and lipid nanoparticles
Authors: Alavi Mehran , Hamidi Mehrdad
Published: February 2019

Considerable development in the application of injectable drug delivery systems for cancer therapy has occurred in the last few decades. These improvements include liposomes, lipid nanoparticles (LNPs), and other nanoparticles with or without macromolecular conjugates. For example, liposomal doxorubicin modified by poly(ethylene glycol) (Doxil) was the first liposome with anti-cancer effects which was approved by the US Food and Drug Administration, whereas Abraxane (modified albumin nanoparticles loaded by paclitaxel) was recently confirmed for the treatment of breast cancer. Recently, drug delivery systems by LNPs are an emerging technology with numerous advantages over conventional liposomes and chemotherapy using free drug treatment of cancer. These properties are biocompatibility, controlled and sustained release of anti-tumor drugs, and lower toxicity. Valuable experiments on these drug delivery systems offer better treatment of multidrug-resistant cancers and lower cardiotoxicity. LNPs have been presented with high functionality in chemotherapeutic targeting of breast and prostate cancer. The basis for this targeting behavior has been shown to be both passive and active targeting. The main objective of this review was an overview of the current position of the liposome-based drug delivery systems in targeted anticancer chemotherapy.
The crystal structure of bis(N,N-dimethylformamide-κO)-tetrakis(9H-xanthene-9-carboxylic-carboxylate-κ2
O:O′)dicopper(II) - acetonitrile (1/2), C66H56Cu2N4O14
Authors: Ren-Shu Wang , Jing Feng
Published: February 2019

C66H56Cu2N4O14, triclinic, P1̄ (no. 2), a = 11.0791(5) Å, b = 11.5747(5) Å, c = 12.4037(6) Å, α = 77.782(4)°, β = 86.304(4)°, γ = 69.491(4)°, V = 1455.97(12) Å3, Z = 2, R
gt(F) = 0.0361, wR
ref(F
2) = 0.0830, T = 293(2) K.
Crystal structure of 1-benzyl-3-cyano-6-phenyl-1,2-dihydropyridine, C19H16N2
Authors: Chen Shi-Jun , Zhu Hao , Zhang Meng-Meng , Xu Wen-Wu , Wang Yu-Cai , Zhang Zhi-Fei
Published: February 2019

C19H16N2, orthorhombic, P212121 (no. 19), a = 7.5177(10) Å, b = 12.4761(16) Å, c = 16.118(2) Å, V = 1511.7(3) Å3, Z = 4, R
gt(F) = 0.0424, wR
ref(F
2) = 0.0967, T = 293(2) K.
Perforated Wall in Controlling the Separation Bubble Due to Shock Wave –Boundary Layer Interaction
Authors: Raja sekar K. , Jegadheeswaran S. , Kannan R. , Manigandan P.
Published: February 2019

The shock wave boundary layer interaction (SWBLI) induced separation bubble formation (SB) and its control has been investigated numerically in the mixed compression type of intake in the scramjet engine. The external compression has occurred due to the three successive oblique shocks formed from the three successive ramps of the forebody with the semi-wedge angle of 7.6, 7.0, and 9.4 respectively. The intake is designed in such a way that all three shocks converge and impinge on the leading edge of the cowl lip for the operating Mach number of 5.0. The numerical simulation is carried out by solving steady, compressible 2-D RANS equations using transitional SST k-ω turbulence model to capture the influence of SWBLI in the performance of supersonic intake. The formation of SB and its control by establishing the perforated wall in its proximity are investigated for three different cases based on the perforation with respect to SSB. Findings of the numerical simulation have concluded that the size of the SB decreases to an acceptable level while establishing the perforation in the entire fore-body wall in the isolator region. The feedback loop established between the upstream and downstream of SB could be a possible reason for reducing its size.
High-Pressure Third-Order Elastic Constants of MgO Single Crystal: First-Principles Investigation
Authors: Gu Jianbing , Wang Chenju , Sun Bin , Zhang Weiwei , Liu Dandan
Published: February 2019

High-pressure third-order elastic constants of materials have rarely been investigated experimentally and theoretically to date, so the predictive ability of the method of the volume-conserving, homogeneous deformations based on the first-principles total-energy calculations is tested for the first time in this work. Using this approach, the high-pressure third-order elastic constants

C
111

−

3

C
112

+

2

C
123

${C_{111}}-3{C_{112}}+2{C_{123}}$

,

C
111

/
2

+

3

C
112

+

C
123

${C_{111}}/2+3{C_{112}}+{C_{123}}$

,

C
144

−

C
155

${C_{144}}-{C_{155}}$

, and C
456 of the MgO single crystal are obtained successfully. Meanwhile, the reliability of this method is also verified by comparing the calculated structural properties and high-pressure second-order elastic constants of the MgO single crystal with the available experimental results and other theoretical predications. Results not only indicate the accuracy of our calculations but also reveal the feasibility of the present theoretical method. It is hoped that the present theoretical method and predictions on the high-pressure third-order elastic constants of the MgO single crystal would serve as a valuable guidance or reference for further related investigations.
Synaptic Organization of VGLUT3 Expressing Low-Threshold Mechanosensitive C Fiber Terminals in the Rodent Spinal Cord
Authors: Larsson Max , Broman Jonas
Published: February 2019

Low-threshold mechanosensitive C fibers (C-LTMRs) that express the vesicular glutamate transporter VGLUT3 are thought to signal affective touch, and may also play a role in mechanical allodynia. However, the nature of the central termination of C-LTMRs in the dorsal horn remains largely unexplored. Here, we used light and electron microscopy in combination with VGLUT3 immunolabeling as a marker of C-LTMR terminations to investigate this issue. VGLUT3+C-LTMRs formed central terminals of Type II glomeruli in the inner part of lamina II of the dorsal horn, often establishing multiple asymmetric synapses with postsynaptic dendrites but also participating in synaptic configurations with presynaptic axons and dendrites. Unexpectedly, essentially all VGLUT3+C-LTMR terminals showed substantial VGLUT1 expression in the rat, whereas such terminals in mice lacked VGLUT1. Most VGLUT3+C-LTMR terminals exhibited weak-to-moderate VGLUT2 expression. Further, C-LTMR terminals formed numerous synapses with excitatory protein kinase Cγ (PKCγ) interneurons and inhibitory parvalbumin neurons, whereas synapses with calretinin neurons were scarce. C-LTMR terminals rarely if ever established synapses with neurokinin 1 receptor (NK1R)-possessing dendrites traversing lamina II. Thus, VGLUT3+C-LTMR terminals appear to largely correspond to neurofilament-lacking central terminals of Type II glomeruli in inner lamina II and can thus be identified at the ultrastructural level by morphological criteria. The participation of C-LTMR terminals in Type II glomeruli involving diverse populations of interneuron indicates highly complex modes of integration of C-LTMR mediated signaling in the dorsal horn. Furthermore, differences in VGLUT1 expression indicate distinct species differences in synaptic physiology of C-LTMR terminals.
Some Ways We Might Use Paper
Authors: Davenport Alex
Published: February 2019

This essay works with and through the process of translation to examine Heavier than Air, a play by Anne Harris and Stacy Holman Jones. As a play based on interviews with queer Australian teachers, but performed in multiple locations, the ways the text moved across cultures and between those involved required negotiations of meaning and expression. Scene 11, “Fucking Faggot,” serves as a potent example for me—a queer man involved in the production—about the ways that those negotiations are a complex process that occurs even after a production has been produced.
Engaging the Verbs of Social Justice as We Trace Our Legacies and Our Relevance
Authors: Johnson Amber L. , Johnson Javon
Published: February 2019

This essay introduces the collected performances and responses presented during the Opening Session of the 2017 National Communication Association annual convention held in Dallas, TX.
Passing, Again
Authors: LeMaster Benny
Published: February 2019

“Passing, Again” performs a generative autobiographic poetic response to Imani Cezanne's poem “#flyingwhileblack.” Bryant Keith Alexander's framing of generative autobiography and Sheila Stewart's articulation of poetic inquiry provide the conceptual frameworks that guide the crafting of this critical and creative response. “Passing, Again” is thus intertextual in that it derives its form from Cezanne's just as it is metatextual as a standalone poem. At the same time, “Passing, Again” is the result of poetic inquiry; it performs a means of poetically analyzing lived experience as a mixed-race Asian/white queer and nonbinary trans person who often passes as white, cisgender, male, and heterosexual relative to their transnational family and relationally with their partner who is administratively designated as their “wife.”
New, Sound, and Tight
Authors: Suchy Patricia A.
Published: February 2019

Originally delivered as a response to Rachel N. Hastings's performance of “Black Human” at the Opening Session of the 2017 National Communication Association annual convention, this essay celebrates the reclaiming of the prominence of the practice of performing poetry in this organization as a vital part of its legacy. Tracing the significance of the term “poet” through the German dichter, the essay urges an understanding of the poet's ability to “push back against oppressive bureaucracy” in the academy as well as in the world, and to perform resistance against contemporary cultural tyrannies that insist our legacies are the exclusive property of those in power. The essay at times breaks into performative writing in the form of poetic diction in order to respond to the call of Hastings's poem.
Ousted by Oedipus
Authors: Murray Fiona Alana
Published: February 2019

This story migrates through the cracks of enclosures that are built in reactive resistance to the movement of what is always already there. Turbulence drops the author in divergent times and spaces as she seeks to find ways of being with others, forming emergent collectivities in the wild, after having been ousted by Oedipus. But as the author tries in vain to enclose meaning in the movement, she learns there is value in dispossession.
The Night Poetry as Usual Was Killed
Authors: McCune Jeffrey Q.
Published: February 2019

This essay represents the Closing Remarks for the Opening Session of the 2017 National Communication Association annual convention. It attempts to make usable the profound thoughts and rhetoric experienced in a session of performative pleasure and protest.
Prickly Pear: A Memoir
Authors: Gandolfo Enza
Published: February 2019

This is an extract from Prickly Pear: A Memoir (a work in progress). It is a creative work, a contemporary memoir, that aims to create an intimate experience of the world inhabited by the migrant family. It places the experience of being a migrant in a dialogue with the experience of being a first-generation Australian and draws out the complexities and the fluid and shifting nature of identity—especially for migrants and their children.
“Crossing It”
Authors: Rendle-Short Francesca
Published: February 2019

Creative writing practice can be a performative act, a process through which a range of subjectivities can be construed and disseminated. This essay responds to Rebecca Solnit's provocation on stories and Sara Ahmed et al.'s assertions on home/belonging. What sort of “inventive, chance-taking” text might appear, that acts up, or “performs”? I investigate questions of definition, prepositional thinking, affect, and the grammar of dying and death as essay, poetic prose, and the “unconvention” of toggle and weave in a kind of “collective transit.”
Charles H. Lankester: Estudioso y conservacionista de orquídeas
Authors: Ossenbach Sauter Carlos
Published: February 2019

Biography of Charles H. Lankester.
Patient Characteristics Associated With Voluntary Safety Event Reporting in the Acute Care Setting
Authors: Thurtle Danielle P. , Daffron Sara B. , Halvorson Elizabeth E.
Published: February 2019

OBJECTIVES:

Adverse events are increasingly important to health care delivery and financial reimbursement. Most hospitals use voluntary event reporting (VER) systems to detect safety events, which may be vulnerable to individual and systemic biases. We tested the hypothesis that patient demographic factors such as weight status and race would be associated with safety event reporting in the acute care setting.

METHODS:

We reviewed all acute care encounters for patients 2 to 17 years of age and corresponding safety events entered in the VER system of a tertiary-care children’s hospital from February 2015 to February 2016. Data collected included patient demographics, clinical characteristics, incident description, and reported harm score. Our primary outcome was any report of a safety event. Using χ2 and multivariable logistical regression methods, we determined patient characteristics associated with safety event reporting.

RESULTS:

A total of 22 056 patient encounters were identified, and 341 (1.5%) of those had a reported safety event. In univariate analysis, age, weight category, and race were found to be significantly associated with event reporting, whereas sex and insurance provider were not. In the multivariable logistic regression model, obesity (odds ratio [OR] 0.69; 95% confidence interval [CI] 0.49–0.97) and African American race (OR 0.65; 95% CI 0.46–0.93) were negatively associated with event reporting, whereas length of stay was positively associated (OR 1.51; 95% CI 1.46–1.55).

CONCLUSIONS:

We identified associations between patient demographic factors and voluntary safety event reporting in the acute care setting. In future studies, we will compare VER to event identification by more objective measures, such as a trigger tool.
Pacto Fáustico digital. Instrumentalización de las tecnologías digitales en la escuela
Authors: Montaña Correa Daniela
Published: February 2019

Este artículo presenta el análisis interpretativo de un estudio cualitativo realizado en un colegio oficial del sur de Bogotá. La investigación comprendió desde una perspectiva histórica y social de la educación en Colombia de qué manera se ha reconfigurado la escuela de acuerdo con las relaciones que establecen docentes y estudiantes, la naturaleza del conocimiento y la incorporación de las nuevas tecnologías al espacio escolar. Se identifica una nueva fractura educativa relacionada con la continuación de una tendencia, que pese a valerse de herramientas tecnológicas, sigue manteniendo las ideas de la educación tradicional, centradas en una función distributiva del conocimiento.
El rol de los organismos internacionales en la definición de políticas sociales argentinas a principios del Siglo XXI
Authors: Madrid Liliana Belén
Published: February 2019

El artículo propone identificar el rol de los organismos internacionales de asistencia financiera y técnica sobre las políticas sociales argentinas durante la posconvertibilidad (2003-2015). Con el cambio de siglo y de gestión estatal, ¿cesó la función de los organismos internacionales? A partir del estudio de los Sistemas Únicos de Información de Beneficiarios y, en particular, del Sistema de Integración de Bases de Datos Argentina, se analiza, a través de indagaciones documentales y bibliográficas, la nueva configuración que adquiere el proceso de selección de destinatarios para la determinación del acceso a bienes y servicios de provisión estatal.
Entrevista con Myriam Gutiérrez Correal
Authors: Leal Leal Gloria E. , Ramírez María Himelda
Published: February 2019

Licenciada en Trabajo Social en la Universidad Nacional de Colombia; especialista en Técnicas Avanzadas de Investigación y Evaluación Social aplicadas a la Educación, en el Instituto Latinoamericano y del Caribe de Planificación Económica y Social (Ilpes) (Chile). Trabajó en el Departamento Nacional de Planeación (DNP) (1974 a 1994). Luego, con la Cooperación Técnica Alemana (GTZ) en el programa Proequidad (2001-2006); trabajó en el Instituto Interamericano de Cooperación para la Agricultura (IICA/CA). En 2006, se vinculó al programa Áreas de Desarrollo Alternativo Municipal (ADAM) de Associates in Rural Development (ARD). Ha sido asesora de la Asociación de Mujeres Campesinas, Negras e Indígenas de Colombia (Anmucic), de la Federación Departamental de Mujeres Campesinas de Cundinamarca (Fedemucc) y en ENDA Colombia-Organización en pro del medio ambiente-. Entre sus publicaciones figuran Una mirada de Género al sector rural colombiano (2003), Mujer, Semilla, Alimento, una mirada al sistema agroalimentario colombiano desde la Perspectiva de Género (1995) y el libro autobiográfico y testimonial La Última Mirada (2018). En 2006, obtuvo el Premio Nacional del IICA/OEA por su contribución al desarrollo de las Mujeres Rurales en Colombia; fue docente en los programas de Trabajo Social de la Universidad Católica de Chile (1972-1973), de la Universidad Nacional de Colombia (1999) y en el posgrado de Trabajo Social de la Universidad de la Salle (1999-2000).
Yield, quality, antioxidant, and sensorial properties of diced tomato as affected by genotype and industrial processing in Southern Italy
Authors: De Sio F. , Rapacciuolo M. , De Giorgi A. , Trifirò A. , Giuliano B. , Morano G. , Cuciniello A. , Caruso G.
Published: February 2019

Research was carried out on processing tomato in Southern Italy in order to compare four round-prismatic type hybrids oriented to diced produce (4420, Miceno, Nemabrix, Impact as a control). The hybrid Nemabrix attained the highest marketable yield (180.9 t ha–1), due to both the highest number of fruit per plant and their mean weight (103.7 and 70 g, respectively), and it was not significantly different from the other genotypes in terms of processing efficiency both as a total and along dicing chain (67.8% and 65.6%, respectively). Lycopene attained the highest concentration in Nemabrix (155 mg kg–1), and β–carotene was most concentrated in 4420 and Miceno (2.8 mg kg–1). Significant differences arose between the genotypes with regard to the sensorial variables aspect, colour, taste, firmness, and fresh taste.
Nanofibre encapsulation of limonene and modelling its release mechanisms
Authors: Dede S. , Lokumcu Altay F.
Published: February 2019

In this study, limonene was encapsulated by using gelatine, Na-alginate, polyvinyl alcohol, lactalbumin or xanthan gum with the uniaxial electrospinning process. The highest encapsulation efficiency was obtained for the sample containing polyvinyl alcohol. The release kinetic studies of nanofibre encapsulated limonene were carried out at 5.5, 20, and 38.5 °C. The Peppas equation expressed the release behavior of limonene for all systems very well, indicating quasi-Fickian diffusion. The modelling data suggested that maybe more than one mechanism was involved for the release at 20 °C. The activation energy for releasing limonene from the electrospun polyvinyl alcohol-alginate encapsulation system was found to be 6.2 kJ mol–1 from the Arrhenius equation.
Antibiotic susceptibility and ability to form biofilm of Listeria monocytogenes strains isolated from frozen vegetables
Authors: Skowron K. , Grudlewska K. , Lewandowski D. , Gajewski P. , Reśliński A. , Gospodarek-Komkowska E.
Published: February 2019

L. monocytogenes poses a serious threat to public health, since most cases of listeriosis are connected with eating contaminated food. L. monocytogenes is often detected both in fresh and frozen vegetables.

The aim of this study was to evaluate the antibiotic susceptibility and ability to form biofilm of L. monocytogenes strains isolated from frozen vegetable mixtures in Poland.

Ninetynine genetically different strains were found among 100 isolates of L. monocytogenes. Among the 99 strains, 80 (80.8%) were susceptible to all tested antibiotics. Nineteen (19.2%) strains were resistant to one or more antibiotics. From this group of L. monocytogenes strains, most strains were resistant to erythromycin (16; 16,1%), penicillin (15; 15.1%), meropenem (12; 12.1%), cotrimoxazole (12; 12.1%), and ampicillin (3; 3.1%). According to the obtained results, differences in intensity of biofilm, both between those isolated in successive years and in the particular year, were observed. Performed analysis showed statistically insignificant faint negative correlation (r=–0.088) between the number of antibiotics to which strains were resistant and the intensity of biofilm formation by them.

Food contamination with L. monocytogenes poses a threat to consumers, therefore it is necessary to monitor their antibiotic susceptibility, ability to form biofilm, and genetic similarity, in order to evaluate the strains persistence time in plant.
New record of Marmosa (Stegomarmosa) andersoni Pine, 1972 (Didelphimorphia, Didelphidae), a rare and endemic Peruvian marsupial
Authors: Zeballos Horacio , Cristóbal L. Humberto , Arias Sandra , Pari Alexander , Pino Kateryn , Medina César E.
Published: February 2019

Marmosa (Stegomarmosa) andersoni Pine, 1972 is one of the rarest members of the genus Marmosa. This species is endemic to southeastern Peru and currently known from only 3 close localities in Cusco. Herein we report a new record for the species from Pasco, which extends its geographic distribution by 360 km and represents its northernmost record
New records of Pigrogromitus timsanus Calman, 1927 (Callipallenidae, Pycnogonida) for the South Atlantic
Authors: Lucena Rudá A. , Christoffersen Martin L.
Published: February 2019

Pigrogromitus timsanus Calman, 1927 is a species of pycnogonid that has a broad world distribution and belongs to a monotypic genus. Although this species was recorded for the first time in the Southern Atlantic from the port of Natal, state of Rio Grande do Norte, this record appeared in the grey literature, has gone unnoticed, and to our knowledge, the specimens are not available for study. Based on materials in the Paulo Young Invertebrate Collection at Universidade Federal da Paraíba, we provide further proof of the presence of P. timsanus in the Southern Atlantic. We also provide an updated account on the worldwide distribution of this species.
ORIENTAÇÃO EMPREENDEDORA: CONCEITOS E DIMENSÕES
Authors: Coura Leandro Ferreira , Reis Neto Mario Teixeira , Verwaal Ernst , Oliveira Ronielton Rezende
Published: February 2019

No campo de estudo do empreendedorismo diferentes linhas temáticas têm dividido pesquisadores e contribuído para o desenvolvimento da área. Uma dessas linhas é a orientação empreendedora que trata do empreendedorismo no nível da organização. O artigo é uma revisão da literatura na qual se discorre a respeito da evolução do conceito da orientação empreendedora e suas dimensões, a saber: inovatividade, assumir riscos, agressividade competitiva, autonomia e proatividade. O procedimento metodológico tem por base a hermenêutica e busca identificar aspectos que vinculam a influência destas dimensões no desempenho organizacional. A contribuição da pesquisa está sobre a forma de estruturar e organizar o conhecimento a respeito das dimensões da orientação empreendedora. A sugestão de pesquisa futura é avaliar um modelo conceitual que analise o efeito das dimensões na orientação empreendedora e no desempenho organizacional.
“Ensayo en la noche”: Políticas de la restitución en Diario de una princesa montonera -110% verdad- de Mariana Eva Perez
Authors: Arenillas Maria Guadalupe
Published: February 2019

En Diario de una princesa montonera -110% verdad- (2012) Mariana Eva Perez, hija de desaparecidos, dramaturga, licenciada en ciencia política, y nieta de dos figuras prominentes de Abuelas de Plaza de Mayo crea un lenguaje propio para narrar las contradicciones que producen algunos de los tabús, silencios y eslóganes de la memoria. El nudo de conflicto que analizo en este ensayo se centra en la incómoda relación de la protagonista con su hermano, apropiado luego de nacer en la Escuela de Mecánica de la Armada y restituido cuando ella tenía veinte años. Lejos de las metáforas tranquilizadoras de la reparación, la restitución y la reconstrucción, que para la autora producen otra clase de olvidos, Diario construye una poética lúdica y sagaz que critica el uso de estos términos y el silencio de historias como la suya, opuestas al final feliz de la reunificación familiar. En este sentido, Diario abre una reflexión necesaria y nuevos interrogantes sobre uno de los temas más difíciles en las políticas de memoria de la Argentina actual.
Rethinking the Americas, Rethinking African American Studies
Authors: Outlaw Lucius
Published: February 2019

N/A
What is Happening in the Doing: hunched over a consideration
Authors: Grube Vicky
Published: February 2019

What is the importance of matter in the art making of children? This article introduces the notion that inorganic matter is much more diverse and creative than previously thought. By taking time to putter, pause, and to perceive objects, humans may seize a material vitality with these
nonhumans. Perhaps any one thing whether a pencil, a tube of glue, a piece of paper, or a young artist are neither subject nor object but Nature. Spinoza finds entanglements, the assemblage of things, as Nature enriching the human. In the theories of new materialisms, matter is a vital entanglement
in the creation of knowledge. It follows that the teacher must value the unorthodox in the learning of the child. What does the art making of children look like when they intra-act with matter to conceive phenomena? This article engages in these questions and challenges the priority of a preconceived
product as a goal in art making. Rather a teacher might ask ,'what is happening in the doing'?
Rethinking 'Fixed-Ability Thinking' and Grouping Practices: questions, disruptions and barriers to change in primary and early years education
Authors: Bradbury Alice
Published: February 2019

This article uses data from a research project exploring grouping practices based on 'ability' in classrooms for children aged 3-7 years in England to consider the relationship between teachers' views of ability and their ways of organising children. The widespread use of grouping with
young children and the concomitant 'fixed-ability thinking' by teachers are discussed, alongside an exploration of how and why teachers object to grouping on this basis. Examples of teachers who were able to disrupt grouping practices based on 'ability' are described, allowing for a further
discussion of the barriers to change for the majority of teachers. The article concludes that the relationship between teachers' beliefs about ability and their grouping practice is complex, as there can be both grouping without fixed-ability thinking and vice versa.
The Zombie Theory of Genetic Intelligence
Authors: Wrigley Terry
Published: February 2019

The notion that 'intelligence' or 'ability' is genetically inherited refuses to die. This article reviews the way such a notion has long been used to justify inequality in society, and considers the methodological failings and deceptions, and the interpretative blind spots, of those
who advance the heritability of 'intelligence' as a basis for understanding people's learning.
Numerical simulation of karst environments to study subsidence
Authors: Conrado-Palafox Alain L. , Equihua-Anguiano Luisa N. , Orozco-Calderón Marcos , Arreygue-Rocha Eleazar
Published: February 2019

Karstic zones, due to dissolution of limestone rocks, are a problem in several areas of the world, being associated with damage sustained by facilities, among other issues. A numerical study is presented using Plaxis 2D to analyse terrain subsidence on the surface, considering a transversal section to apply a road load, while cavities in the ground increase due to karsticity. Results allow perception of the surface subsidence, associated with the number of cavities, before and up to collapse of the first voids created. Stress paths developed in the cavities’ opening process are built from the interpretation of results provided by the numerical analyses. These stress paths make it possible to obtain the way in which stress values change between initial and final states, defining an in situ stress variation for the void's presence. Furthermore, it is concluded that there is a tendency towards stability for the superficial displacement and a maximal affected horizontal length associated with a specific number of cavities, despite the fact that more of these are developed in the zone. The rocks and the soil were simulated by Hoek–Brown and Mohr–Coulomb constitutive models, considering the specific characteristics of rocks and soil endemic to Yucatan, Mexico.
Effect of nanoparticles on the properties of geopolymer materials
Authors: Rashad Alaa M.
Published: February 2019

Geopolymer is an innovative material and a real alternative to traditional Portland cement for use in the construction industry. Incorporation of the use of geopolymers in civil engineering is one of the most-promising options for reducing environmental impact and the huge energy consumption of Portland cement manufacture. Since geopolymers were discovered, further development has produced more modified, strong, durable and sustainable binders. One option to develop and modify some properties of this system is to add other prospective materials such as nanoparticles. In general, the applications and advances of nanotechnology in geopolymer materials remain limited in comparison with those of traditional cementitious materials. However, in the last few years, the effect of nanoparticles on the properties of geopolymers has been given increased attention. This article presents an overview of earlier studies focused on adding different types of nanoparticles, such as nano-silicone dioxide (SiO2), nano-titanium dioxide (TiO2), nano-aluminium oxide (Al2O3), nano-clay and geothermal nanosilica waste, into different geopolymer matrices. Fresh and hardened properties have been reviewed and briefed. The current review can be used as a guide to know what has already been covered in the research and what should be covered in future studies.
Investigation of recycled powder as supplementary cementitious material
Authors: Zhu Peng , Mao XinQi , Qu Wenjun
Published: February 2019

It is important to manage the disposal of construction and demolition wastes in an economical and environmentally friendly way. Reuse of recycled materials generated from construction and demolition wastes to produce ‘green’ construction materials is a promising area. Recycled powder can be produced from abandoned clay bricks or concrete. The chemical compositions and physical properties of the recycled powder are first studied by a series of tests, including scanning electron microscopy and X-ray diffraction analysis. An experimental programme is designed to investigate the mechanisms by which the recycled powder contributes to the strength of cementitious composites. It is found that the strength contribution of recycled powder is by means of a micro-aggregate effect, hydration and pozzolanic activity. The hydration activity of recycled powder contributes mainly to the early strength, and pozzolanic activity to the strength at a later stage. To promote the pozzolanic activity of recycled powder, different chemical activators are investigated. Two chemical activators are selected and their effect on the pozzolanic activity of recycled powder is verified.
Bioelectrochemistry protocol For CHI Potentiostat v1
Authors: M Jones Rose , N Orcutt Beth
Published: February 2019

The following protocol describes how to prepare microbial fuel cells (MFCs) with Indium Tin Oxide (ITO) electrodes for use as a poised potential enrichment tool, specifically an oxic system to enrich for the cathode-oxidizing community. The protocol describes setting up four “online” MFCs that are connected to a potentiostat at a particular set voltage plus one “offline” unconnected control (to account for non-electrode related changes). One of the online MFCs is a “negative” killed substrate control (to account for abiotic medium-source current fluctuations) and the remaining three MFCs being replicate live samples. This protocol is based on advice primarily from Frauke Kracke and Annette Rowe.
Publicly-Researchable Accessibility Information: Problems, Prospects and Recommendations for Inclusion
Authors: Kaufman-Scarborough Carol
Published: February 2019

Despite worldwide attempts to improve accessibility for consumers with disabilities, barriers still exist that exclude persons from consumer participation in daily life. Although legislation and lawsuits have addressed this issue, marketplaces designed for able-bodied persons are commonplace with minimal accessibility standards tied to costs rather than the needs of this overlooked group. The present article examines a seemingly obvious, but understudied aspect of inclusion: the provision of publicly-researchable accessibility information. Ironically, businesses and public venues may create accessible spaces, yet fail to provide the level of detail needed by consumers with disabilities when planning a shopping excursion, dinner and entertainment, or travel and overnight stays. That is, the provision of factual accessibility content has lagged and is not required by law. This article reports on an exploratory study in the United States that examined the accuracy and completeness of publicly-researchable accessibility information for restaurant and entertainment venues in a large metropolitan area in the Northeastern United States. Observations were gathered from websites and social media of specific venues, as well as travel rating services like TripAdvisor. Findings were mixed. While some venues provided full and factual accessibility information, others revealed just the opposite both in online and follow-up telephone interviews. Implications are discussed along with recommendations for future study.
THE QUEBEC NATIONAL QUESTION DURING THE WORLD WAR II AND IN THE POSTWAR PERIOD
Authors: Mashevskyi O. , Baraboi M.
Published: February 2019

The paper deals with the Quebec national question during the Second World War and the postwar period in the context of the causes and preconditions of "Quiet Revolution" in 1960s in Quebec. Based on articles, memoirs, non-fiction literature, statements we analyze the views of the French-Canadian and the English-Canadian public and political figures on the crisis of conscription, as well as the impact of the crisis on the social and political situation in post-war Quebec. Particular attention is paid to an under-researched aspect in the historiography – to attempts of a reform in Quebec, in times of Adelard Godbout (1939 – 1944) as a prime-minister of Quebec. He was considered to be a precursor of the "quiet revolution" in 1960s. During his tenure in the Quebec government he adopted important laws on women suffrage, compulsory schooling of children from six years. It weakened the influence of foreign companies on the Quebec's economy. The Adelard Godbout's defeat in provincial elections in 1944 resulted in rise of a nationalist-conservative Maurice Duplessis. We thoroughly analyzed the post-war period in the history of Quebec, which is known as the "period of darkness" (1944 – 1959), when prime minister of Quebec Maurice Duplessis was elected on second term. The paper also focuses on the policy of the M. Duplessis's regime in Quebec, on how it contributed to further backlog in socio-economic development, which accelerated discontent of opposition which demanded major reforms. This discontent had become the catalyst of the "Quiet Revolution." The postwar period has transformed French-Canadian national question in Quebec. Basic issues during the government of M. Duplessis were not linguistic, religious or cultural ones. The main question was that of equality of the provinces in the federation and concerned expansion the autonomous rights of Quebec.
"I'D PREFERRED TO BE KILLED AT THE FRONT THAN TO LIVE THIS WAY…": "SILENCING" LETTERS IN THE SOVIET UKRAINE (based on reports of the USSR'S committee for state security concerning perlustration of the private correspondence in december 1945 – february 1947)
Authors: Patrylak I.
Published: February 2019

In this paper we summarized documents concerning the perlustration of private correspondence received and sent by servicemen from December, 1945 to February, 1947. These documents are to be found in analytical reports of People's Commissariat/Ministry of State Security of USSR. The military censorship stations were working up about 5 millions letters a month. Their reports on the perlustrated civilian and military correspondence reveal the most feared and annoying topics for Soviet authorities, as well as topical problems of population in the home front, of servicemen and students of fabric schools, of ex-servicemen and disabled soldiers. From these reports we also get know about the monthly quantity of confiscated and edited by censors letters. Numerous quotes from confiscated and "edited" letters that we found in reports of the Ministry of State Security let us to have a look at the inner world of average Soviet citizens. It is usually impossible to immerse in the everyday life of that period in absence of memoirs, diaries and authorized interviews. So we can conclude that these reports enrich substantively our knowledge about "fear of authorities" and other feelings and moods of the Ukrainian society of the first postwar months.
Development of mathematical methods for calculation of the pubic arch angle
Authors: Mudrov Viktor A. , Mochalova Marina N. , Mudrov Andrey A.
Published: February 2019

Hypothesis/aims of study. The frequency of adverse intranatal outcomes is significantly increased when the pubic arch angle (PAA) is less than 90°. The accuracy of the manual method for determining PAA depends on a large number of parameters, such as obesity of a woman, as well as stereometric sensation and the experience of a doctor. Determination of PAA using ultrasound and X-ray pelviometry is generally available and reliable; however, it requires special training. The aim of this study was to develop mathematical methods for calculation of PAA.

Study design, materials and methods. The study included a retrospective and prospective analysis of 120 birth histories based on the Regional Clinical Hospital Perinatal Center (the Chita city, the years 2017/2018), which were divided into three equal groups. Group 1 consisted of patients with body weight deficit, group 2 included patients with normal body mass index, and group 3 comprised patients with alimentary constitutional obesity. On the eve of the birth, external pelviometry, the manual method for determining PAA, and ultrasound pelviometry by translabial access were performed.

Results. PAA determined by the manual method was 99.6 ± 11.3° in group 1, 100.1 ± 14.2° in group 2, and 98.2 ± 10.7° in group 3. When ultrasound pelviometry was performed, the value of PAA was 97.4 ± 10.7° in group 1, 104.8 ± 13.8° in group 2, and 104.1 ± 12.3° in group 3. The error of the manual method was 2.2% in group 1, 4.5% in group 2, and 7.6% in group 3. On the basis of mathematical modeling of external pelviometry data, a pattern is defined, which is expressed by the formula: PAA = 180° – arccos (0,5 ∙ S1S2/S1P) – arccos (0,5 ∙ B1B2/(B2S1 – S1P), where PAA is the pubic arch angle (°); S1S2, Distantia spinarum; S1P, the distance between the anterior superior spine of the ilium to the lower edge of the symphysis; B2S1, the distance between the anterior superior spine of the ilium to the tuberosity of the opposite ischium; B1B2, the transverse size of the output plane. The coefficient of determination (R-squared) is 0.82. Thus, mathematical modeling allows determining PAA with a high degree of reliability.
Correction of immune disorders and changes in the protein/lipid spectrum of circulating erythrocyte membranes in adenomiosis
Authors: Ivanova Oksana Yu. , Telegina Olga V. , Konoplya Alexey A. , Rybnikov Vladimir N.
Published: February 2019

Hypothesis/aims of study. Disorders of immune homeostasis, morphofunctional and ultrastructural changes of erythrocytes in endometriosis lead to hypoxia, impaired micro-rheological and hemostatic statuses, dysmetabolism, organ and system dysfunction, which may contribute to the systemic consequences of this disease. The aim of this study was to evaluate the immune status and protein/lipid spectrum of erythrocyte membranes, as well as to develop methods for the pharmacological correction of impaired parameters in patients with internal endometriosis.

Study design, materials, and methods. Fifty-seven patients with verified grade I–II adenomyosis were examined, assessing some immune status parameters and determining protein and lipid fractions of circulating erythrocyte membranes before and after pharmacotherapy.

Results. The changes in the immune status parameters and protein and lipid composition of erythrocyte membranes revealed in adenomiosis disrupt the functional activity of immunocompetent cells and erythrocytes.

Conclusion. The proposed methods of pharmacotherapy are pathogenetically substantiated and contribute to the correction of both the chosen immune status parameters and structural and functional properties of red blood cells, while improving the quality of treatment of patients with adenomyosis.
Surgical treatment satisfaction in women with pelvic organ prolapse. Quantification and analysis
Authors: Korshunov Mikhail Yu. , Sergeyeva Irina V.
Published: February 2019

Hypothesis/aims of study. An integrated evaluation of the effectiveness of pelvic organ prolapse (POP) treatment in women requires a consistent interpretation of the criteria of treatment satisfaction. The aim of this study was to specify surgical treatment satisfaction in patients with POP.

Study design, materials, and methods. Surgical treatment was performed in 486 patients with POP stages II–IV. In 12 months, a patient survey (using a 1-5-point scale) evaluated the level of treatment satisfaction, reasons for lowered self-reported satisfaction, and respondents’ ambivalence regarding treatment results.

Results. One-year post-surgical treatment of POP stages 0–I are observed in 80.9% of patients. Full satisfaction (5 points) was self-reported by 61.1% of patients, 28.6% of patients indicated partial satisfaction (3–4 points), and 10.3% of patients indicated treatment dissatisfaction (1–2 points). Post-surgery stage of POP is weakly correlated with self-reported treatment satisfaction (r = –0.39; p < 0.0001). Most common reasons for lower self-reported satisfaction were the emergence of new issues, fear of pathology recurrence, urinary incontinence, and pain. Five patients (1.0%) indicated that their condition “became much worse” after the surgical treatment.

Conclusion. The treatment satisfaction range is variable. It is necessary to consider a variety of clinical, deontological, and psychological factors in the analysis of surgical POP treatment satisfaction spectrum.