bluuebunny/crossref_metadata_2025 huggingface dataset:
Analyzing the Strategies for Controlling a Hybrid Energy Complex Based on Renewable Energy Source
Authors:   South Ural State University, Miroshnichenko Aleksey A. , Solomin Evgeniy V. ,   South Ural State University, Gordievsky Evgeniy M. ,   South Ural State University, Kulganatov Askar Z. ,   South Ural State University, Stanchauskas Vitaliy I. ,   South Ural State University
Published: November 2020

One of the priority objectives faced by the Russian electric power industry is supplying power to decentralized areas. These areas include the regions of the Far North and the Far East, which are characterized by remoteness from the unified energy system, low population density in vast territories, weak transport links, and undeveloped industry. In view of these features, it can be concluded that it is economically unprofitable to connect such consumers to the unified energy system. The use of renewable energy sources is the most promising solution to this problem. This, in particular, was noted by the President of Russia V.V. Putin during the “Russian Energy Week”: ‘Wind power, of course holds promise as a method for solving the problem of supplying electricity to the population, but it would be more correct to talk about the integrated use of alternative energy sources....’ Recently, the idea of using hybrid energy generation systems has become a priority issue in considering the electrification of isolated regions. Calculations have shown that such systems are more reliable and economically profitable in comparison with the generation of energy from only one of the sources. The use of combined energy generation systems is dictated by several factors, the main of which is that individual sources of renewable energy are variable in nature, which entails difficulties in ensuring uninterrupted power supply. Such problems do not arise in the case of using hybrid systems. The possibility of using a load distribution control strategy for a hybrid system consisting of photovoltaic panels, a diesel generator, and storage batteries, and operating according to a specified load schedule with the known battery charge/discharge cycles is considered. It is pointed out that the HOMER software package is a suitable tool for carrying out an optimization analysis regarding the technical, economic, and environmental factors of the proposed systems, taking into account the load variation pattern, battery charge/discharge cycles and distributed load. By using this software, it is possible to select the most optimal control strategy for combined power supply systems that allows, along with improving their reliability, better efficiency and longer service life to be obtained.
Inductor and Plasma Characteristics of Ferrite-Free Inductively-сoupled Amalgam Ultraviolet Lamps with Closed-loop Small Diameter Discharge Tubes
Authors:   NRU MPEI, Popov Oleg A. , Starshinov Pavel V. ,   NRU MPEI, Ilikeeva Rimma A. ,   NRU MPEI, Bureeva Darya A. ,   Technical Specialist of BELL Group, Irkhin Igor V. ,   All-Russian electrotechnical Institute — branch of the Russian Federal Nuclear Center — all-Russian Scientific Research Institute of Technical Physics Academician E.I. Zababakhin, Levchenko Vladimir A. ,   Open Company «LIT», Moscow
Published: November 2020

The electrical and radiation characteristics of innovative high-efficient 254-nm wavelength ultraviolet (UV) radiation sources employing ferrite-free inductively-coupled low-pressure discharges excited in closed-loop quartz tubes are experimentally studied. The discharge was excited using a 3-turn induction coil at a frequency of 1.7 MHz and lamp power equal to 90-160 W in a mixture of mercury vapor at a pressure of around 0.01 mmHg and buffer gas (Ar, a mixture of 30%Ne+70%Ar) at pressures of 0.7 and 1.0 mmHg in a closed tube 16.6 mm in diameter and 815 mm long. The coil turns made of multiconductor wire (Litz wire) with a low per unit length resistivity of 0.00014 Ωm/cm and 1.5 mm in diameter were arranged over the discharge tube perimeter. It was found that, as the lamp power was increased, the power loss in the induction coil wire decreased from 7-9 to 3-4 W, and the coil efficiency increased from 92 to 98%. In lamps filled with buffer gas at a pressure of 1.0 mmHg, the maximal plasma UV radiation generation efficiencies equal to 68% and 66%, respectively, were achieved at plasma power levels of 105-155 W. The decrease of buffer gas pressure to 0.7 mmHg entails a drop of lamp UV radiation generation efficiency by 10-20% and a shift of its maximum values to the zone of lower plasma power values.
The mechanism of community led local development in Romanian urban areas
Authors: Pușcaș Andreea , Beleiu Ioana
Published: November 2020

Community led local development (CLLD) is a tool of the European Commission, used for territorial development. Local Action Groups were funded in the rural areas of Romania, since the 2007-2013 programming period through LEADER, demonstrating positive effects in terms of social innovation and disproof of social disparities. In urban areas, CLLD is a recent multi-fund approach, financed by the European Social Fund (ESF) and the European Regional Development Fund (ERDF). Despite the intentions addressed for simplifying the implementation of the mechanism by the Romanian authorities, several challenges and delays however occurred. The present research reveals the similarities and the main differences between the implementation of the mechanism, in urban and rural areasesides, it proposes a set of recommendations to increase the efficiency of the studied mechanism, based on a case study on the implementation of the CLLD mechanism in Gherla, Romania.
Rolling window VaR: an EVT approach
Authors: Rusu Andrei
Published: November 2020

In this study, a method of estimating value-at-risk is proposed. This method combines elements of extreme value theory (EVT), the APARCH model (Ding et al. 1993) and the rolling window method. The research was conducted using 20 stock market indexes worldwide during 2006-2019. Value-at-risk was estimated via 12 competing models which were evaluated using 5 tests. The back testing results indicate that the best model was the one which takes into consideration the asymmetric character of financial data (APARCH with skewed normal distribution), the Generalized Pareto Distribution for modeling the tail of the financial returns distribution and the rolling window approach. The methodologies discussed in this paper could provide a useful tool for both financial entities and regulatory authorities.
Norma y unicidad del sistema técnico en la producción alimentos en Argentina
Authors: Busch Silvia Inés
Published: November 2020

El período contemporáneo se caracteriza por la constitución de un medio técnico-científico-informacional sobre territorios cada vez más vastos. Con el alargamiento de las divisiones territoriales del trabajo de las grandes empresas se imponen nuevas formas de cooperación y control. En este trabajo analizamos la creciente mediación de las normas en los circuitos de la economía urbana orientados a los alimentos de rápida preparación con sede en la metrópoli de Buenos Aires. Para hacerlo estudiamos las transformaciones en la regencia en los circuitos y el fenómeno técnico como condición de posibilidad de la normatización del territorio. Por último, indagamos las implicancias de este proceso en las relaciones entre actores hegemónicos y subordinados.
Sobran cuchillos, falta el pescado. Auge del langostino patagónico y reactivación del conflicto social en Mar del Plata
Authors: Solimeno Diego Adrian , Yurkievich Gonzalo Julian
Published: November 2020

En los últimos años, las poblaciones de langostino crecieron inusitadamente promoviendo que una buena parte de la flota fresquera y merlucera que tradicionalmente operaba en Mar del Plata se reorientara hacia esta especie de localización patagónica. El presente trabajo, apunta a demostrar que mientras las exportaciones pesqueras nacionales marcan récords históricos, la conflictividad social en la formación social y espacial pesquera de Mar del Plata se ha revitalizado motivada por la falta de pescado fresco descargado en tierra. En este sentido, analizamos: la evolución de las descargas de merluza y langostino en el país; el comportamiento de las distintas flotas y las características y recurrencia de la conflictividad social en Mar del Plata. A tales fines, trabajamos con bibliografía específica, estadísticas oficiales, prensa periódica, publicaciones especializadas del sector pesquero y entrevistas a informantes calificados.
La Cartografía, ¿en manos de quién está?. Las disputas institucionales por las prácticas de relevamiento en Argentina
Authors: Gómez Pintus Ana , Mazzitelli Mastricchio Malena
Published: November 2020

Introducción
Teorías geográficas, técnicas cartográficas y diplomacia: Hans Steffen, un geógrafo prusiano en los Andes Australes
Authors: Lois Carla
Published: November 2020

Hans Steffen, un destacado geógrafo prusiano (1865-1936) fue contratado por el Gobierno de Chile en 1889 como profesor de geografía para trabajar en el por entonces recientemente formado Instituto Pedagógico. A finales del siglo XIX, cuando Steffen ya había consolidado su posición profesional en Santiago, Chile y Argentina decidieron someter el litigio limítrofe sobre los Andes a un arbitraje internacional. En ese contexto, Steffen se involucró activamente en la preparación del documento que el gobierno chileno llevaría al diferendum. Esta presentación analiza las ideas, las teorías y las prácticas geográficas desarrolladas por Steffen para la conceptualización y la demarcación de la frontera entre Argentina y Chile a partir de los textos que produjo (diarios, libros didácticos, declaraciones diplomáticas, conferencias publicadas), las imágenes (mapas, fotos, bocetos, esquemas y notas de campo).
Música de Narcos
Authors: Ferrari Mariano
Published: November 2020

Las series se han convertido en uno de los formatos audiovisuales más populares de nuestros tiempos y la música —que forma parte de ellas— en un lenguaje que aporta desde lo simbólico como elemento narrativo y comunicacional fundamental. Este artículo propone un análisis en torno a la relación entre los elementos musicales, sonoros y semánticos de la música de la serie estadounidense Narcos y la reproducción de estereotipos socioculturales vinculados al imaginario cultural de lo latinoamericano.
Argentina de pie
Authors: Ercolalo Ricardo J. A.
Published: November 2020

Este trabajo consiste en el análisis iconográfico de uno de los afiches diseñados por el Frente de Todos: Argentina de pie, para la campaña gráfica presidencial argentina que tuvo como candidato al nuevo presidente de la Nación Argentina Alberto Fernández. El análisis considera los elementos compositivos de la pieza gráfica, el mensaje icónico y lingüístico y las posibles relaciones intertextuales.
Adaptación lingüística y psicométrica del Cuestionario de EstilosAtributivos Académicos (EAT-A)
Authors:   Laboratorio de Investigación en Psicopatología Infanto-Juvenil, Facultad de Psicología, Universidad Nacional Autónoma de México, México, Rodríguez Huitrón Alejandro M. , Hernández-Guzmán Laura ,   Laboratorio de Investigación en Psicopatología Infanto-Juvenil, Facultad de Psicología, Universidad Nacional Autónoma de México, México
Published: November 2020

Background: Students’ attributions of their grades mayaffect their academic performance. However, lack ofevidence supporting the validity and reliability of theinstruments measuring attribution is a major concern.Objective: To analyze the factor structure, convergentvalidity and reliability of the Academic Attributional StyleQuestionnaire adapted to Mexican high school students(EAT-A). Method: The sample consisted of 557 MexicoCity students of both sexes aged between 15 and 19. Usinga confirmatory factor analysis for both success and failureattributions, a 7-factor structure and a 4-factor structureof the EAT-A were tested. The instrument’s convergentvalidity, internal consistency and reliability were examined.Results: Only the 7-factor structure showed adequate fitindices: RMSEA = .046; SRMR = .053; CFI = .961; TLI =.952 and χ²/gl = 2.72. In addition, the EAT-A evidencedconvergent validity concerning success and reliabilitymotivation. Conclusion: The EAT-A is a quick- and easy-to-administer instrument for measuring students’attributions of their grades in a reliable and valid manner.
The well-being of residents in an urban environment: the case of a Russian megapolis
Authors: BAGIROVA Anna , NOTMAN Olga
Published: November 2020

The issue of ensuring the well-being of residents is central to systems of municipal governance. The purpose of our study is to measure the well-being of residents in an urban environment and, based on the obtained results, to identify problem areas that impede the achievement of strategic development goals in the megapolis. We conducted a representative survey of residents in one of the largest industrialized Russian megacities, Ekaterinburg. Based on the survey data, an index of subjective well-being in the urban environment was obtained, which included 4 blocks of assessment indicators: 1) assessment of the current state of the urban environment; 2) assessment of the changes in the urban environment; 3) assessment of personal well-being; and 4) assessment of intentions to live in the city. The study revealed that the most prosperous citizens in the urban environment are: 30-39 years old; married; employed. The problems of low well-being and the absence of youth intent to connect their futures with the city are identified as the main threats to the megapolis’ development. The results of our study are of practical importance for making informed management decisions in urban restructuring planning, urban infrastructure upgrades, and the development of social policy measures aimed at improving the quality of life and well-being of citizens.
Sustainable Bleaching Process of Raw Cotton by TiO2 Light-Activated Nanoparticles
Authors: Barros Maria Amélia , S. Conceição David , G. Silva Cláudia , Sampaio Maria J. , Faria Joaquim L.
Published: November 2020

Nanoparticles (NPs) of titanium dioxide (TiO2) are promising for the photocatalytic degradation of organic compounds, arising as an excellent alternative to conventional bleaching processes. Within this background, aqueous suspensions of TiO2 NPs were impregnated by the pad-dry method in raw cotton. The hydrophilic properties and whiteness index (WI) of Berger were the main parameters examined before and after the TiO2 treatment. In the absence of water, using a UV-Vis lamp, high hydrophilicity was found for raw cotton. Diversely, under UV-LED radiation, the presence of water molecules in the coated cotton was revealed to be a crucial parameter in enhancing its whiteness. A comparable WI of Berger with conventional bleaching methods was obtained using 0.5 g L-1 TiO2 suspension under UV-LED radiation, suggesting that the impregnation of TiO2 NPs can be a promising alternative for the industrial bleaching methods, as it proves to be more sustainable and with low operating costs.
STUDY ON USING ENGLISH SONG IN TEACHING BIOLOGY 10 AND ONE EXAMPLE IN PRACTICE
Authors: Thi Thuy Quynh Nguyen
Published: November 2020

Although the application of English songs in teaching Biology is one of the new teaching methods in Vietnam, it can become an effective method to help the students change both their looks and their ways to approach the natural science curriculum. The combination of smooth melodies and easy-to-remember content of the songs will help students easily remember general knowledge of the lesson. Moreover, the content of English songs will help them understand, memorize special vocabulary effectively, and improve their foreign language skills. A statistical investigation on the status of teaching Biology in English was carried out at some high schools in Hanoi. Several English songs had been used in teaching Biology grade 10. Pedagogical experiments have shown that Biology songs in English will benefit to create interest in learning and especially help them memorize biological terms in English easily.
Organoleptic Analysis Of The Honeycomb Cake (Kue Sarang Semut)
Authors: Faridah Anni , Jannah Raudhatul , Marlis Merisa
Published: November 2020

The Honeycomb Cake or Caramel Cake or widely known in Indonesia as "Kue Sarang Semut" is a type of cake that preferred by many people and has a distinct colour, texture and aroma. Some of its main ingredients are caramel and wheat flour. But the caramel-making is generally sugarcane-based, and the flour is still usually from wheat, which its availability is always depended on import traffic and its import activity is now increasing. Therefore, it is necessary to research the cake's organoleptic test using different types of sugar and the flour substitution of tofu dregs. This research is classified as a pure experiment and conducted in two stages and uses Completely Randomised Design, which is consisted of four treatments. The first stage uses four different types of sugar (granulated sugarcane, aren sugar, palm sugar, and rock sugar) and the second stage is four types of tofu dregs flour amount (0%, 15%, 30%, and 45%) used, with three-time repetition. The obtained data later tabulated into a table and will be examined using Analysis of Variance test. If there is any significant difference, the Duncan test will then applied. This research concludes that the different types of sugar significantly affect the colour and aroma quality. Furthermore, the amount of the wheat flour substitute of tofu dregs flour significantly affect the volume, colour, aroma, chewiness texture, hollow texture, and taste satisfaction. The best treatment of the Honeycomb Cake is obtained from the usage of pam sugar and 15% amount of tofu dregs flour.
Changes in consumption behaviours of Polish seniors - singles in 2007 and 2016
Authors: Słaby Teresa
Published: November 2020

The increase in the share of the number of older people in the Polish population requires constant diagnosis of the degree of satisfying their needs. One of the ways of such assessment is the dynamic analysis of changes in the goods and services consumption. The author's research task was to find an answer to the question whether according to subjective opinions of seniors in 2007, there were consumption restrictions caused primarily by the deterioration of the their material situation and whether this situation deepened over the next 10 years. The aim of the article is to analyze the distribution of responses to this question in 2007 and 2016 based on the results of the GUS household budget surveys in single-person households (singles), where the situation may be particularly difficult. Two age groups were distinguished, differentiating the responses. The choice of years of observation was based on the occurrence of favourable assessments of the economic and social situations in these periods. One- and multi-dimensional tools of statistical analysis were used.
Evaluation of carbon monoxide emissions of electric power generators used in buildings in Ibadan Metropolis, Nigeria
Authors: WAHAB Akeem Bolaji
Published: November 2020

Abstract: Poor supply of electricity to different settlements over the years in Nigeria has forced building occupants to shift to dependence on generators. This study thus determined outdoor and indoor carbon monoxide levels of generators used in both residential and commercial buildings and assessed its impact on the users and the environment. The study was carried out in Ibadan Metropolis, Nigeria, which was divided into core, transition and suburban zone respectively. Five (5) residential and commercial buildings respectively were purposively selected in each of the zones of the study area. The HT- 1000 digital LCD carbon monoxide meter was used to take measurements of the emissions of carbon monoxide with conformity to NESREA AND OSHA standards. The outdoor emission levels of the carbon monoxide before or during the use of generators were taken at 0, 2 and 4 m respectively from the external walls of the buildings sampled and the corresponding indoor measurements were taken internally at 1.2-1.5m above floor area. The data collected were analysed with the use of statistical methods such as t-test, trend analysis and Kolmogorov smirnov test. The results showed that outdoor and indoor measurements of carbon monoxide emissions levels were highest in buildings in the core zone either before or during the use of generating sets. Reduced carbon monoxide levels during use of generators were obtained at distance limits beyond 2 m from external walls of buildings across zones of the study area. In view of the measurements taken, being above limits set by statutory bodies, during use of generators, and its attendant effects on the environment and building occupants, it was recommended that its users should be enforced to position them in enclosures located away from external walls of buildings and government should license only sales of generating sets with emission control mechanisms.
Perfil dos atendimentos de um serviço móvel de urgência e emergência de uma universidade federal
Authors: Cogo Silvana Bastos , Bevilaqua Taís Foletto , Venturini Larissa , Buboltz Fernanda Luisa , Da Silva Laís Mara Caetano , Badke Márcio Rossato , Nietsche Elisabeta Albertina , Ramos Tierle Kosloski , Antunes Andrei Pompeu , Sehnem Graciela Dutra
Published: November 2020

Objetivo: Caracterizar o perfil dos atendimentos de um serviço móvel de urgência e emergência de uma Universidade Federal do interior do Estado do Rio Grande do Sul. Métodos: Estudo quantitativo, descritivo, retrospectivo, que utilizou-se de dados secundários, coletados de fichas de atendimento no período de maio de 2017 a abril de 2018. Os dados foram digitados em planilha no Excel e analisados por meio do software Statistica 13.3. Resultados: A população atendida foi predominantemente de estudantes do sexo feminino (63,09%) com idade entre 21 e 30 anos (37,30%). Os atendimentos tiveram como maior causa as situações clínicas e traumáticas. Parcela considerável dos usuários (91,91%) recebeu atendimento in loco e foi liberado. Conclusão: Nota-se predomínio de estudantes com faixa etária de 21 a 30 anos, devido o estudo ser de um serviço vinculado a uma universidade. O desfecho foi variado e se associa à gravidade de cada caso. Quando a pessoa atendida não apresentou sinais e sintomas graves ou foram manejados in loco, ocorrendo a liberação sem necessidade de encaminhamento para outro serviço de saúde. Assim, a implantação de um serviço de saúde ambulatorial, para além do serviço móvel, acarretaria em melhoria do atendimento para a população universitária.
Fatores associados à mortalidade neonatal em recém-nascidos de baixo peso ao nascer
Authors: Gaíva Maria Aparecida Munhoz , Lopes Fernanda  Sanches Peres , Mufato Leandro Felipe , Ferreira Silvana Margarida Benevides
Published: November 2020

Objetivo: Analisar os fatores associados à mortalidade neonatal de recém-nascidos com baixo peso ao nascer. Métodos: Estudo do tipo coorte retrospectiva, com recém-nascidos de baixo peso que foram a óbito nos primeiros 27 dias de vida, no período de 2011 a 2014. Coletou-se dados no Sistema de Informação sobre Nascidos Vivos e Sistema de Informação sobre Mortalidade. O Linkage determinístico unificou os dados dos dois sistemas. Para a análise no efeito de covariáveis sobre a força da mortalidade neonatal em recém-nascidos de baixo peso aplicou-se a regressão simples. E, posteriormente a regressão logística. As variáveis testadas nos modelos de regressão foram selecionadas quando apresentaram a significância estatística para os valores de p ≤ 0,05, bem como a presença de variáveis de ajuste. Resultados: Mostraram-se como fatores associados à mortalidade neonatal: parto vaginal; realização de 1 a 6 consultas de pré-natal; peso ao nascer entre 500 a 999 gramas; Apgar menor que sete e a presença de anomalia congênita. Conclusão: A ocorrência de óbito neonatal de recém-nascidos com baixo peso se relaciona à qualidade da assistência durante a gestação, ao parto e ao recém-nascido.
Copper, Boron and Vinyl Epoxides: from 1,4-Diols to Cyclopropylboronates
Authors: Nóvoa Luis , Trulli Laura , Parra Alejandro , Tortosa Mariola
Published: November 2020

Herein we describe the reactivity found between vinyl epoxides and catalytically generated copper-boryl complexes. By tuning the substituents of the alkene and/or the reaction conditions, 1,4-diols, allylic alcohols or cyclopropylboronates can be prepared. The stereochemical information
of the vinyl epoxide is transferred to the products with high levels of stereocontrol.
Comparative clinical characterization of the new recessive mucopolysaccharidosis-plus disease in the Yakut and Turkish populations
Authors: Новгородова С.Н. , Максимова Н.Р.
Published: November 2020

МПС - группа наследственных болезней обмена веществ, связанных с нарушением метаболизма гликозаминогликанов (ГАГ), приводящая к мультисистемному поражению органов и тканей. Обусловлены данные заболевания мутациями генов, контролирующих процесс внутрилизосомного гидролиза макромолекул. Недавно выявлено новое наследственное заболевание с аутосомно-рецессивным типом наследования, относящееся к группе лизосомных заболеваний, клинически схожее с МПС, с мутацией в гене VPS33A, названное мукополисахаридоз-плюс (МПС-ПС) (OMIM #617303). Оно встречается у детей якутской национальности и приводит к ранней младенческой смертности. Также оно описано одновременно у 2 сибсов из Турции. Описанная впервые мутация c.1492C>T (p.Arg498Trp) в гене VPS33A является причиной МПС-плюс в обеих популяциях.

MPS is a group of hereditary metabolic diseases associated with impaired glycosaminoglycan (GAG) metabolism, leading to multisystem damage of organs and tissues. Recently, a group of scientists revealed a new hereditary disease with an autosomal recessive inheritance type, belonging to the lysosomal disease group, clinically similar to MPS, with a mutation in the VPS33A gene, called mucopolysaccharidosis plus (MPS-PS) (OMIM # 617303), found in Yakut children, leading to early infant mortality, and also described simultaneously in 2 siblings from Turkey. The newly described c.1492C> T (p.Arg498Trp) mutation in the VPS33A gene is the cause of MPS-plus in both populations.
Simple Acridan-Based Multi-Resonance Structures Enable Highly-Efficient Narrowband Green TADF Electroluminescence
Authors: jiang pengcheng , Zhan Lisi , Cao Xiaosong , Lv Xialei , Gong Shaolong , Zhou Changjiang , Huang Zhongyan , Ni Fan , Zou Yang , Yang Chuluo
Published: November 2020

Multi-resonance thermally activated delayed fluorescence (MR-TADF) offered exceptional solution for narrowband organic light emitting diode (OLED) devices in terms of color purity and luminescence efficiency, while the development of new MR skeleton remained an exigent task, especially for long wavelength region. We hereby demonstrate that a simple modification of the B (boron)-N (nitrogen) framework by sp3 -carbon insertion would significant bathochromic shift the short-range chargetransfer emission and improve the device performances. The bis(acridan)phenylenebased skeleton developed in this contribution presented a non-planar conformation and allowed facile introduction of isolating units to prevent triplet-involved quenching, deriving two luminophores with quantum yields approaching 90% and narrow FWMHs below 30 nm in film state. Corresponding green-emissive devices realized superior performances comparing to the planar carbazolyl-based MR-TADF analogues, with a maximum external quantum efficiency (EQEmax) up to 28.2% and small efficiency rolloff without the involvement of any sensitizing host
Characterization of a Library of Vitamin A-Functionalized Polymethacrylate-Based Nanoparticles for siRNA Delivery
Authors: Klemm Paul , Huschke Sophie , Rodewald Marko , Ehteshamzad Nadia , Behnke Mira , Wang Xinyue , Cinar Gizem , Nischang Ivo , Hoeppener Stephanie , Weber Christine , Press Adrian , Höppener Christiane , Meyer Tobias , Deckert Volker , Schmitt Michael , Popp Jürgen , Bauer Michael , Schubert Stephanie
Published: November 2020

A 60-membered library of vitamin A-functionalized P(MMA-stat-DMAEMA)-b-PPEGMA block copolymers was synthesized by RAFT polymerization. Subsequently, retinoic acid was coupled to hydroxyl groups present in the hydrophilic PPEGMA block. The polymers were investigated for their ability to encapsulate ribonucleic acids through nanoparticle (NP) formulation using the emulsion/solvent evaporation method. The localization of vitamin A in surface-near regions of the NPs was indicated by surface enhanced Raman spectroscopy, and the interaction of the NPs with a retinol binding protein was investigated by analytical ultracentrifugation. The systematic analysis of the NP library in terms of the encapsulation efficiency of the ribonucleic acids, the toxicity of the NPs, and the cellular uptake helped identifying suitable candidates for cellular internalization studies. The cell uptake was investigated by flow cytometry and fluorescence microscopy and reveals structure dependent uptake behavior of the examined particles.
Dois países, muitas infâncias: encontros para criar com os filmes Carreto e Una niña una escuela
Authors: Omelczuk Fernanda , Perera Pérez Maricela
Published: November 2020

Stephanie e Laura são duas meninas que se encontram na singularidade de um modo de existência que nem sempre tem espaço no cotidiano da vida e das escolas. Tinho é sensível em perceber as necessidades de Stephanie como intrínsecas à de qualquer criança. Assim, nasce entre eles uma silenciosa e cúmplice amizade. Laura tem em sua família e no coração das políticas do país onde nasceu o reconhecimento de que todas as vidas importam. Todo esforço é válido, portanto, para fazer funcionar uma escola que atenda a uma única criança. A partir da metodologia de análise da criação das imagens dos curtas brasileiro, Carreto, e cubano, Una niña una escuela, o artigo destaca o modo respeitoso com que os diretores constroem a relação das crianças com necessidades educacionais especiais e seu entorno. O resultado dessa análise permitiu compartilhar, no contexto da Lei 13.006/2014, exercícios de criação, a partir desses dois filmes. Os exercícios que o artigo propõe, inspirados na metodologia da pedagogia da criação, podem ser desenvolvidos com crianças, e tem o objetivo de destacar as infâncias brasileiras e latino-americanas e potencializar a relação inventiva com o audiovisual.
中医治疗胃炎胃溃疡的临床疗效观察
Authors: 赵 崇辉
Published: November 2020

目的：讨论中医治疗胃炎胃溃疡的临床疗效观察。方法：选择80例胃炎胃溃疡的患者，分为两组，使用中医治疗的为实验组，使用常规西医治疗的为对照组。结果：两组的治疗效果，不良反应发生率以及生活质量评分相比，差异较大（P＜0.05）。结论：在胃炎胃溃疡的患者中使用中医治疗，有利于提高治疗效果，改善生活质量，减少不良反应发生率。
A Novel Approach for Forensic Differentiation of Grass Stains Using ATR FT-IR Spectroscopy and Chemometrics
Authors: K. Jossan Jaskirandeep , Sharma Sweety , Jindal Priyanka , Singh Rajinder
Published: November 2020

Grass evidence often encountered at the crime scene, helps in establishing the primary as well as secondary crime scenes. Due to the limited quantity and intricate nature of samples, there is a need for fast, sensitive and reliable techniques for the effective analysis of this vital evidence. In the current study, an attempt is made to study the feasibility of ATR FT-IR in combination with chemometric tools for chemical characterization and species differentiation of grass stains. Ten different grass species belonging to three subfamilies, Panicoideae, Chlorodoidae, and Bambusoideae, were collected and analyzed by using the ATR FT-IR spectroscopy combined with the PLSR chemometric tool. Results showed a clear difference between samples of Panicoideae, Chlorodoidae, and Bambusoideae subfamilies, and between species of each subfamily. To analyse the performance of the classification model, a set of 10 unknown/blind samples (unknown to the analyst) were randomly selected from the training dataset and all unknown/blind samples were accurately assigned in their corresponding group. ATR FT-IR spectroscopy requires minimal sample preparation and can be successfully used as an eco-friendly, non-destructive, and reliable alternative to other existing methods.
Anachronism in Fonts and Relative Dating of Computer Printed Documents: A Case Report
Authors: Lingan Loganathan
Published: November 2020

In the field of forensic document examination, identification of fonts and their dates of release may provide a lead as to the relative age of computer printouts. Hence, fonts in a printout can be used as a means of evaluation of an anachronism or chronological inconsistency. Therefore, an anachronism betrays the fabricated nature of the questioned documents. In the present case study, the traditional methodology of typescript matching coupled with an off-line digital tool were used in identifying pre-dated documents and disproving the genuineness of the documents in question. The procedure adopted for differentiation, identification and confirmation of font(s) and years of release of fonts for commercial use is discussed.Hence, in this case report it was safely concluded that the disputed agreement for sale could have been prepared on a later date than the purported date of execution i.e.1993 for the reason that the use of the “Comic Sans MS” font is an anachronism.
International Trafficking of Small Arms and Light Weapons: Consequences and Confrontation
Authors: Abdulghani Al Ahmar Fadi
Published: November 2020

تشارك العديد من الدول بنشاط في عمليات نقل الأسلحة الصغيرة والأسلحة الخفيفة والذخائر، بوصفها دولًا مستوردة، أو مصدرة، أو دول عبور. وفي بعض الأحيان، يمكن أن تُفقد تلك الأسلحة أو تُسرق نتيجة الفساد الحكومي والسعي وراء الربح من قبل سماسرة الأسلحة، في حين تساعد السيطرة الفعالة على تدفق الأسلحة الدولية على منع وقوعها في أيدي مستخدمين نهائيين غير مرغوب فيهم.وقد تم استخدام المنهج الوصفي التحليلي بهدف وصف وتحليل ظاهرة الاتجار بالأسلحة الصغيرة والخفيفة على الصعيد الدولي، والنظر في تداعياتها السلبية، إلى جانب توضيح أهم ملامحها وأسبابها، وأبرز التدابير الخاصة بمواجهتها، مع الإشارة إلى أهم الاتفاقيات الدولية الناظمة لها.بفضل سهولة استخدامها وحجمها الصغير واحتمال نقلها عبر الحدود، ليس هناك شك في أن الأسلحة الصغيرة والخفيفة ستزيد من العنف والجريمة المنظمة وعدم الاستقرار الدولي؛ إذ لا تزال الضوابط الوطنية والدولية التي تحكم تجارة الأسلحة الصغيرة والخفيفة تواجه تحديات كبيرة بسبب افتقارها إلى الدعم من كبار منتجي ومورّدي ومصدري الأسلحة، بالنظر إلى مصالحهم السياسية والاقتصادية. ولذلك، يجب على الدول اتخاذ تدابير أكثر صرامة لمراقبة صادرات الأسلحة وضمان خضوع العقود أو شهادات المستخدم النهائي للائحة تحظر تحويل وجهة الأسلحة أو إعادة تصدير الأسلحة دون إذن سابق من المُصدّر الأصلي، مع رفض منح تراخيص التصدير حيثما كان هناك خطر واضح من استخدام هذه الأسلحة لترهيب المدنيين أو انتهاك الالتزامات الدولية، بما في ذلك: قرارات العقوبات الصادرة عن مجلس الأمن الدولي
Fruits de mer et invertébrés de rivière sur les tables du sud-ouest de la France (XVIe-XXIe s.)
Authors: Duhart Frédéric
Published: November 2020

Resumen: Este texto es un estudio sobre el consumo de invertebrados marinos y de agua dulce en el sudoeste de Francia desde los principios del siglo XVI hasta el día de hoy. Toma en cuenta alrededor de 100 especies: bivalvos, incluso mejillones de agua dulce; gasterópodas; cefalópodas; crustáceas, incluso cangrejos de río; erizos y anémonas de mar. El artículo propone una historia tan detallada como sea posible de cada especie o grupo de especies cercanas; evoca las evoluciones de sus representaciones sociales, de sus valorizaciones comerciales, de sus preparaciones culinarias, etc. Con su importante litoral sobre el Golfo de Vizcaya y sus ciudades ubicadas tierra adentro, el sudoeste de Francia constituye un área de estudio interesante para pensar la complejidad de los hábitos de consumo de mariscos durante el periodo anterior al desarrollo de los transportes rápidos y a la invención del frio artificial.
Abstract: This text is a study on the consumption of marine and freshwater invertebrates in Southwest France from the early 16thcentury to the present day. Around 100 species are taken into account: bivalves including river mussels; gastropods; cephalopods; crustaceans including crayfishes; urchins and sea anemones. The article proposes a history as detailed as possible of each species or group of closely related species, including the evolution of their social representations, commercial valuations, culinary preparations, etc. With its important coastline on the Gulf of Gascony and its inland cities, Southwest France forms an interesting study area to think about the complexity of seafood consumption patterns in the era before the development of rapid transports and the invention of artificial refrigeration.
Características diferenciales del LCR en meningitis víricas y bacterianas
Authors: Crespo Zamora María Verónica , Romoleroux Uquillas Genesis Carolina , Vásquez Bajaña Viviana Beatriz , Garcés Menéndez Nicasio Antonio
Published: November 2020

La meningitis es una enfermedad con gran incidencia que requiere atención por parte de la Salud Pública debido a las tasas de mortalidad y a las secuelas que deja en los pacientes que la padecen. Es característico en niños menores de 10 años en un porcentaje elevado, sin embargo, el empleo de vacunas y antibióticos de alto espectro han logrado disminuir la incidencia y han logrado mejorar las manifestaciones de la infección. El objetivo de ésta investigación es evaluar el rendimiento del lactato en el líquido cefalorraquídeo (LCR) como biomarcador para diferenciar la meningitis bacteriana de la meningitis viral en niños, y definir una concentración óptima de lactato en el LCR que pueda considerarse significativa para la diferenciación. El análisis del LCR es una importante herramienta de diagnóstico para diferenciar la meningitis aguda bacteriana de la viral. Cuando la tinción de Gram y el cultivo son negativos, el lactato de LCR puede proporcionar información de diagnóstico pertinente, rápido y confiable para distinguir el tipo de meningitis. En tal sentido, el lactato de LCR tiene una alta sensibilidad y especificidad para diferenciar la meningitis bacteriana de la viral. Sin embargo, hoy en día, sigue siendo un desafío para la medicina, minimizar las secuelas y la mortalidad en pacientes que han padecido cualquier tipo de meningitis. La meningitis es una enfermedad con gran incidencia que requiere atención por parte de la Salud Pública debido a las tasas de mortalidad y a las secuelas que deja en los pacientes que la padecen. Es característico en niños menores de 10 años en un porcentaje elevado, sin embargo, el empleo de vacunas y antibióticos de alto espectro han logrado disminuir la incidencia y han logrado mejorar las manifestaciones de la infección. El objetivo de ésta investigación es evaluar el rendimiento del lactato en el líquido cefalorraquídeo (LCR) como biomarcador para diferenciar la meningitis bacteriana de la meningitis viral en niños, y definir una concentración óptima de lactato en el LCR que pueda considerarse significativa para la diferenciación. El análisis del LCR es una importante herramienta de diagnóstico para diferenciar la meningitis aguda bacteriana de la viral. Cuando la tinción de Gram y el cultivo son negativos, el lactato de LCR puede proporcionar información de diagnóstico pertinente, rápido y confiable para distinguir el tipo de meningitis. En tal sentido, el lactato de LCR tiene una alta sensibilidad y especificidad para diferenciar la meningitis bacteriana de la viral. Sin embargo, hoy en día, sigue siendo un desafío para la medicina, minimizar las secuelas y la mortalidad en pacientes que han padecido cualquier tipo de meningitis.
La importancia ultrasonográfica del Doppler de arteria uterina en la enfermedad hipertensiva del embarazo
Authors: Ortiz Dueñas Silvio Eleuterio , Ochoa Bustamante Jessenia Paola , Hidalgo Castelo Mariana Elizabeth , Valenzuela Valencia Arcadio
Published: November 2020

Las enfermedades hipertensivas del embarazo representan un grave problema de salud mundial. Estas enfermedades, en especial la preeclampsia, son las principales causas de morbilidad y mortalidad perinatal y materna. La ultrasonografía Doppler es una valoración rápidamente reproducible y confiable aún durante estadios tempranos del embarazo. El objetivo de la presente investigación consiste en plasmar, la importancia de la ecografía Doppler de arteria uterina en la enfermedad hipertensiva del embarazo, especialmente de la preeclampsia. El modelo de investigación es una revisión de tipo documental bibliográfico. La identificación de embarazadas vulnerables a desarrollar enfermedades hipertensivas, debe ser un propósito fundamental en su atención, para realizar prevención primaria. Entre los métodos de tamizaje más destacados para cumplir dicho propósito se encuentra el Doppler de arterias uterinas durante el primer y segundo trimestre. La arteria uterina es el vaso más estudiado en la evaluación Doppler en Preeclampsia, puesto que representa la condición vascular materna, a través del índice de pulsatilidad, índice de resistencia y la presencia de muesca diastólica temprana. En conclusión, este estudio ha revolucionado el concepto tradicional de la Perinatología, por cuanto ha permitido una mejor comprensión del proceso fisiopatológico tanto del del feto como de las estructuras que lo alojan. Esta comprensión resulta vital para establecer una vigilancia durante el embarazo que permita tomar las medidas necesarias para evitar complicaciones y llegar a un feliz término. En la actualidad, la ecografía Doppler de arteria uterina es una de las mejores herramientas en la predicción de enfermedades hipertensivas durante el embarazo, especialmente la preeclampsia, así como de otras complicaciones tales como: retardo en el crecimiento intrauterino (RCIU), desprendimiento placentario y muerte fetal intraútero.
Estrategias comunicacionales en declaratoria de estado de excepción en el Ecuador 2019-2020
Authors: Mendoza Solórzano Myriam Rossana , Morán Cárdenas Gina Arsenia , Mendoza Solórzano Adriana Lidia , Zavala Palacios Oswaldo Francisco
Published: November 2020

La declaratoria de Estados de Excepción, refiere a un “corpus jurídico” delineado en las Constituciones, destinado a normar situaciones fácticas de emergencias, la competencia para apreciar la configuración de la situación y para declararla, los requisitos formales que deben preceder a esa declaratoria, la enumeración de las medidas que se van a dictar y eventualmente, las garantías previstas frente a la hipótesis de una crisis. Su concepción evolucionó desde lo que se conocía como el derecho de excepción, hasta luego de la segunda guerra mundial, que se constituye como un precepto constitucional. En América latina ha sido usado en estados de emergencia, tal como Ecuador lo aplicara en el periodo 2019 y 2020, ante dos eventos de crisis suscitado, en octubre 2019 seguido por la pandemia mundial. De allí que el presente estudio enfoque su atención, a estos eventos como objeto de estudio, y desde la perspectiva de las estrategias comunicacionales en la declaratoria de dichos estados, se desarrolle un análisis sobre sus bondades y debilidades. Estudio que no pretende ser concluyente, arrojando pro y contras, mostrando la vulnerabilidad de la sociedad, pero también evidenciando la participación y medidas que debe tomar un Estado nación ante situaciones como la pandemia actual; se pretende con esta investigación documental, fomentar investigaciones futuras que profundicen la tan polémica temática
Cardiopatía de takotsubo en pacientes de la Clínica San Francisco
Authors: De La Rosa Cajilema Johanna Priscilla , Villacis Rodriguez Carlos Antonio , Intriago Cevallos Verónica Deniss , Barrazueta Bucaram María José
Published: November 2020

Las enfermedades cardiovasculares (ECV) representan la primera causa de mortalidad en todo el mundo. Entre las ECV se encuentran las Cardiomiopatías. En este grupo se destaca la Cardiomiopatía de Takotsubo (CTT). Aunque poco frecuente no deja de ser relevante. También conocida como síndrome del corazón roto, es una afección cardíaca temporal causada, con frecuencia, por situaciones estresantes y emociones extremas. Asimismo, puede originarla una enfermedad física grave o una cirugía. El propósito fundamental del presente estudio es compendiar material actualizado y presentar un esbozo de todo lo relacionado con el conocimiento de la Cardiopatía de Takotsubo. El diseño de investigación es bibliográfico, y la metodología es de revisión. Se encontró que la CTT, entre el grupo de cardiomiopatías existentes, es la única reversible. Presenta similitud en su manifestación clínica con el síndrome coronario agudo, en razón de lo cual, es importante hacer el diagnóstico diferencial. La precisión en el diagnóstico permitirá ajustar el tratamiento y conseguir mejores resultados. Sin embargo, hasta tanto no se realice el diagnóstico diferencial el tratamiento de emergencia será el del síndrome coronario agudo. Por último, el conocimiento de su pronóstico refiere, en su mayoría, que este tipo de patología es benigna. Con una mortalidad hospitalaria de menos de 5%. Es importante continuar los estudios acerca de esta cardiomiopatía con la finalidad de precisar con mayor rapidez su diagnóstico y prevenir sus complicaciones.
A importância de Emmy Noether para a inclusão das mulheres no Ensino Superior e no desenvolvimento dos estudos matemáticos
Authors: Jesus Samara de , Gomes Leonardo
Published: November 2020

O presente trabalho aborda a vida e a obra de Amalie “Emmy” Noether. Discute, brevemente, algumas de suas contribuições científicas, com fins educativos nas áreas da matemática e de gênero. A partir de uma revisão de literatura, este trabalho traz um pouco da biografia de Emmy Noether e seleciona algumas de suas principais contribuições ao longo de sua vida. Os resultados obtidos e discutidos são a respeito de suas inovações e da relevância da isonomia de gênero na educação que contribuem para o desenvolvimento científico e para a democracia da educação. Para atingir esses resultados foi feita uma pesquisa bibliográfica indireta.
Identificação de concepções de estudantes universitários sobre Ciências da Natureza a partir de bacias semânticas
Authors: Sousa Jennifer Caroline de , Costa Otávio Crozoletti , Infante-Malachias María Elena
Published: November 2020

A natureza como ponto de confluência entre a Biologia, a Química e a Física é admitida como um pressuposto que escapa à problematização sobre como essas ciências têm especificado concepções de “ciência” e de “natureza” na educação científica. Considerando que tais concepções sejam fundamentais aos propósitos da alfabetização e letramento científicos, neste estudo identificamos e analisamos as concepções sobre as Ciências da Natureza de estudantes matriculados na disciplina “Ciências da Natureza” pertencente ao Ciclo Básico da Escola de Artes, Ciências e Humanidades da Universidade de São Paulo. Através da aplicação de um questionário ao início e ao final da disciplina, analisamos isoladamente as concepções de “ciência” e de “natureza” presentes nas respostas e, a partir delas, retratamos o imaginário dos discentes sobre as “Ciências da Natureza” através de bacias semânticas. A predominância de uma visão empirista da ciência e da natureza como o conjunto de todos os elementos naturais, em que o ser humano não está necessariamente presente, interagindo e modificando-a por meio da ciência e da tecnologia, sinaliza que a compreensão das complexas relações entre Ciência, Tecnologia, Sociedade e Ambiente no ensino de ciências ainda se constitui como um objetivo a ser alcançado.