bluuebunny/crossref_metadata_2025 huggingface dataset:
Genetic structure of ural populations of Larix sibirica Ledeb. on the base of analysis of nucleotide polymorphism
Authors: Vasilyeva Yu. S. , Zhulanov A. A. , Boronnikova S. V. , Yanbaev Yu. A.
Published: May 2020

Research on the state and dynamics of the gene pool (an important natural resource that determines the potential fitness of living organisms and, ultimately, their long-term survival) becomes an important problem in the context of increased anthropogenic environmental impact. They are especially important for key species of ecosystems of a global scale importance. Larix sibirica Ledeb., which spreads from the Western Siberia to the Russian North-West, is one of such forest tree species. We identified patterns of genetic structure of populations on the example of the species’ Western race on the Middle and Northern Urals. The analysis of nucleotide polymorphism of genes of ABA-inducible protein, MADS-box-transcription factor and of 4-kumarat: CoA ligase (a part of the gene) was used as a method. Evidences were obtained that a part of the populations previously formed a single large population. At the same time, populations with different gene pools were found. As a result, differences between populations within the region were more pronounced (fixation index FST = -0.021 – 0.260, total haplotype diversity Hd = 0.636 – 0.911; nucleotide diversity π = 0.005 – 0.009; number of mutations θW = 0.005 – 0.012) than in other parts of the race. Causes of this phenomenon are discussed. It was concluded that the larch forests with a unique gene pool and/or high genetic diversity should be objects of population-oriented forestry and conservation.
Gene-Targeted markers to assess genetic diversity and population structure within Tunisian Phoenix dactylifera L. cultivars
Authors: Soumaya Rhouma-Chatti , Sarra Choulak , Maha Moussa , Khaled Chatti , Noureddine Chatti
Published: May 2020

Genetic variability in date palm genotypes collected from different regions of southern Tunisia was analyzed using a Start Codon Targeted (SCoT) marker system. Thirty-one accessions collected from three locations were investigated. One hundred and nine amplicons were produced among which 84 % were polymorphic. The PIC value and the Rp values testified of the efficiency of used primers. The percentage of polymorphic loci (Pp) varied from 44.57 to 83.70 %, Nei‘s gene diversity (H) from 0.175 to 0.273 with a mean of 0.228, and Shannon‘s information index (I) values ranging from 0.257 to 0.409 with an average value of 0.338 were illustrated. The Tunisian date palm populations exhibited high genetic differentiation (GST = 0.319) and gene flow (Nm = 1.063). The AMOVA analysis presented 70 % of the variation within the population and 30 % of the variation between them. Phylogenetic analysis and the Bayesian clustering approach also revealed high genetic variation among genetic variants with a net divergence of the wild insular population of Kerkennah from other cultivars. The present investigation suggests the effectiveness of the SCoT marker system to estimate the genetic diversity of Phoenix dactylifera genotypes.
Using the potential of peripheral green areas of cities for educational and recreational purposes on the example of Stary Sącz, Nowy Targ and Kraków
Authors: Kulig Mateusz , Przeniczny Anna , Ogórek Piotr
Published: May 2020

Green areas located on the peripheries of cities have the potential to become green public spaces not only of recreational but also educational character, promoting at the same time the knowledge about environmental protection. The cities included in the research belong to the małopolskie voivodeship (Lesser Poland voivodeship). With the use of geospatial data of land cover, as well as territorial forms of environmental protection, it was pointed that 48.4% of forest, wooded and shrub green areas located within city borders are covered by a form of environmental protection, thus being a valuable resource of significant nature potential. Making such spaces available in a conscious and attractive way is presented on the example of projects implemented in the cities of: Stary Sącz, Nowy Targ and Kraków. The presented projects were used to make recommendations for city authorities to create green public spaces.
Lukisan Gua Sebagai Tanda Keberadaan dan Mata Pencaharian Penghuni Gua Prasejarah di Kabupaten Maros-Pangkep
Authors: Eriawati Yusmaini
Published: May 2020

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Serum immunoglobulin E reactivity to cross-reacting panallergen components in north-eastern Poland patients pollen sensitized
Authors: Kowal Krzysztof , Pampuch Agnieszka , Sacharzewska Ewa , Swiebocka Ewa , Siergiejko Zenon , Siergiejko Grzegorz , Chruszcz Maksymilian , DuBuske Lawrence
Published: May 2020

Background: The presence of immunoglobulin E (IgE), which cross-reacts with allergen components, such as profilins, polcalcins, and cross-reacting carbohydrate determinants (CCD), creates a problem when selecting patients for allergen immunotherapy by using conventional methods.
The aim of this study was to evaluate the prevalence of sensitization to profilins, polcalcins, and CCDs in patients with seasonal pollen allergic rhinitis. Methods: The study was performed on a group of 112 patients with seasonal pollen allergic rhinitis, ages 14 to 55
years, with sensitization to at least one seasonal allergen (IgE > 0.7 kUA/L). The presence of IgE sensitization to recombinant (r) Bet v 2, rPhl p 12, rBet v 4, rPhl p 7, and CCDs, in addition to rBet v 1, rPhl p 1, rPhl p 5, was evaluated by using a multiparameter immunoblot.
Results: Among the studied patients, 64.3, 80.4, and 41.1% were sensitized to birch, timothy grass, and mugwort pollen, respectively. Sensitization to profilins rBet v 2/Phl p 12 was demonstrated in 28.6%, to polcalcins Bet v 4/Phl p 7 in 8.9%, and to CCDs in 25%. In 29.3%, serum
IgE reactivity to any of the cross-reactive components could be demonstrated. Serum IgE reactivity to rBet v 2 was always accompanied by IgE reactivity to rPhl p 12, and IgE reactivity to rBet v 4 was always accompanied by IgE reactivity to rPhl p 7. Among the patients with pollinosis co-sensitized
to at least two allergen sources according to extract-based diagnosis, possible false-positive results due to sensitization to cross-reactive components were detected in 17.9%. Conclusion: Evaluation of sensitization to cross-reacting components may be useful in evaluation
of patients with pollen allergy who are being assessed for allergen immunotherapy to optimize the constitution of their immunotherapy vaccines.
Association between asthma symptom scores and perceived stress and trait anxiety in adolescents with asthma
Authors: Luria Cathryn J. , Sitarik Alexandra R. , Havstad Suzanne , Zoratti Edward M. , Kim Haejin , Wegienka Ganesa R. , Joseph Christine L.M. , Cassidy-Bushrow Andrea E.
Published: May 2020

Background: Emotional disorders, including depression and anxiety, are more prevalent in individuals with asthma than in the general population and are associated with poor asthma outcomes. Identification of patients with increased levels of stress and anxiety may be helpful
when treating asthma and during asthma counseling. Objective: To further characterize the relationship between asthma symptoms and perceived stress and trait anxiety in an adolescent population. Methods: Adolescents (N = 335) ages 14‐17 years
were recruited to examine the effect of stress on health measures. They were included in the present analysis if they reported current asthma, defined as self-reported clinician-diagnosed asthma plus one or more episodes of asthma in the past year. Asthma symptoms were assessed on a 7-point
scale by using a standardized questionnaire that targets nocturnal awakening due to asthma, symptoms on awakening, activity limitation, shortness of breath, time spent wheezing, and short-acting bronchodilator use. Stress was measured by using the Perceived Stress Scale (PSS), and trait anxiety
was measured by using the State-Trait Anxiety Inventory. Linear regression was used to associate asthma symptoms with PSS and trait anxiety. Results: Thirty-eight adolescents (11.3%), with mean ± standard deviation age 16.7 ± 0.9 years, reported current asthma.
Four of the six asthma symptom assessments had significant associations with PSS: symptoms on awakening (β = 4.82, p < 0.001), nocturnal awakening due to asthma (β = 4.47, p < 0.001), activity limitation (β = 2.78, p = 0.005), and shortness
of breath (β = 1.73, p = 0.014). These associations remained significant after adjusting for gender, race, and the body mass index percentile. Trait anxiety had significant associations with nocturnal awakening (β = 9.28, p = 0.002) and symptoms on awakening
(β = 8.74, p = 0.002). Associations remained significant after adjusting for gender, race, and body mass index percentile. Conclusion: Asthma symptom severity is associated with increased perceived stress and trait anxiety. Adolescents with asthma may
represent a population that is particularly vulnerable to perceived stress and anxiety, which highlights the importance of considering these factors in asthma counseling.
Estimador neuronal del ángulo del rotor de generadores sincrónicos a partir de mediciones de tensión y corriente en terminales
Authors: Barrera René A. , Mora Juan J. , Pérez Sandra M.
Published: May 2020

En este artículo se desarrolla un modelo tipo caja negra para la estimación del ángulo del rotor de un generador sincrónico, utilizando mediciones de tensión y corriente en los terminales. El modelo está basado en redes neuronales del tipo perceptrón multicapa (MLP). A partir de simulaciones en el dominio del tiempo de un sistema de potencia básico consistente en un generador conectado a un barraje infinito, se obtienen los registros de tensión y corriente, los cuales se utilizan como base de datos para entrenar y validar la red neuronal propuesta para la estimación del ángulo del rotor. Se encuentra que el modelo basado en redes neuronales se adapta muy bien al modelo clásico del generador, mostrando un error cuadrático medio inferior a 1´10-10. Los resultados obtenidos demuestran la validez del método de estimación y promueven su uso potencial para estudios de estabilidad del generador sincrónico.
Comparación de dos algoritmos recientes para inferencia gramatical de lenguajes regulares mediante autómatas no deterministas
Authors: Alvarez Gloria I. , Ruiz José , García Pedro
Published: May 2020

El desarrollo de nuevos algoritmos, que resulten convergentes y eficientes, es un paso necesario para un uso provechoso de la inferencia gramatical en la solución de problemas reales y de mayor tamaño. En este trabajo se presentan dos algoritmos llamados DeLeTe2 y MRIA, que implementan la inferencia gramatical por medio de autómatas no deterministas, en contraste con los algoritmos más comúnmente empleados, los cuales utilizan autómatas deterministas. Se consideran las ventajas y desventajas de este cambio en el modelo de representación, mediante la descripción detallada y la comparación de los dos algoritmos de inferencia con respecto al enfoque utilizado en su implementación, a su complejidad computacional, a sus criterios de terminación y a su desempeño sobre un cuerpo de datos sintéticos.
Seleccion optima de proyectos economicos bajo incertidumbre: ilustracion de una compañia de servicios publicos
Authors: Manotas Duque Diego Fernando
Published: May 2020

El problema de la selección y ordenamiento de proyectos es común en los procesos de planeación de empresas privadas y públicas que tienen la obligación de administrar y asignar recursos usualmente escasos, entre alternativas que difieren en aspectos técnicos, operacionales, financieros, además del nivel de riesgo. Este artículo presenta una aplicación del problema de optimización de portafolios de proyectos en condiciones de incertidumbre y restricción presupuestal. En primer lugar, se aborda el problema utilizando como función objetivo la maximización del valor presente neto esperado (ENPV) del portafolio de proyectos y en segunda instancia se propone como función objetivo la maximización de dos indicadores de riesgo asociados al ENPV del portafolio: Maximizar el NPV del portafolio para un cierto nivel de confianza y maximizar la probabilidad de obtener un portafolio factible en términos económicos. La metodología se desarrolló en el marco de un proyecto de investigación aplicada financiado por una empresa de servicios públicos. Para ilustrar la metodología planteada se hace uso de un ejemplo adaptado, en el cual se supone que la compañía puede asignar recursos en forma parcial a varios proyectos entre un conjunto de alternativas de inversión independientes. Los nuevos desarrollos en el área de la optimización estocástica permiten mejorar la calidad de las decisiones de asignación de recursos financieros limitados, mediante el uso de indicadores de desempeño relacionados en forma directa con la estrategia de la empresa. Los resultados muestran la asignación óptima de recursos financieros a cada proyecto teniendo en cuenta la incertidumbre asociada a las diferentes variables de entrada, las cuales se modelan mediante distribuciones empíricas de probabilidad definidas a priori por el analista.
Metodología para estimar los volúmenes máximos de explotación de materiales de arrastre en un río
Authors: Ramirez Carlos A. , Bocanegra Ricardo A. , Santacruz Santiago , Quintero Héctor J. , Sandoval María Clara
Published: May 2020

La extracción de los materiales del lecho en un río origina la erosión o incisión general del cauce, erosión remontante en los tributarios, daños en diferentes estructuras (puentes, captaciones, diques, muros de protección, casas y carreteras), descenso en los niveles freáticos, pérdida de la flora y la fauna acuáticas y riparias y, en general, el desequilibrio del río, poniendo en riesgo el ecosistema fluvial y su entorno. Con el fin de minimizar estos impactos negativos se propone una metodología para estimar los volúmenes máximos de explotación anuales basada en el transporte anual de sedimentos en el río, esto es, en la capacidad de la corriente para reponer los materiales extraídos. Es fundamental, inicialmente, adelantar un estudio integral del río, considerando los diferentes aspectos (hidrológicos, hidráulicos, transporte de sedimentos) para comprender su dinámica, enfatizando en los procesos geomorfológicos y en la identificación de otras intervenciones (presas, captaciones, obras de protección, descargas) que puedan estar afectándolo. Se deben establecer los posibles sectores de agradación del cauce, es decir, los tramos con mayores potenciales de explotación, e igualmente estimar los cambios morfológicos que se puedan originar por las actividades mineras. En la metodología propuesta también es imprescindible el monitoreo periódico de la carga de fondo y la variación de los niveles del fondo del cauce, la actualización de la curva de duración de las cargas anuales de sedimentos en el río y el pronóstico del régimen de caudales para cada año.
Zeolitas a base de cenizas volantes del Reino Unido como adsorbentes para la remoción de metales pesados y amonio a partir de soluciones contaminadas artificialmente
Authors: Alberto Ríos Carlos , Williams Craig D. , Roberts Clive L.
Published: May 2020

Ceniza volante de la Estación de Energía Rugeley, West Midlands (Inglaterra) fue utilizada en este estudio como material de partida en la síntesis de zeolitas a escala de laboratorio usando soluciones de NaOH y KOH. Na-filipsita, hidroxisodalita y K-chabazita fueron sintetizadas a partir de ceniza volante usando el método hidrotérmico clásico. Las zeolitas a base de ceniza volante fueron usadas como adsorbentes de metales pesados y amonio de soluciones acuosas artificialmente contaminadas con metales seleccionados y otros contaminantes. Finalmente, con el fin de probar sus posibles aplicaciones en la descontaminación de aguas, se investigó la eficiencia de las zeolitas sintetizadas en la retención de metales pesados y amonio de soluciones sintéticas usando reacciones tipo “batch” a temperatura ambiente. Se examinaron parámetros importantes tales como dosis de zeolita (g) por volumen de solución (ml) y tiempo de reacción con el fin de entender los mecanismos de remoción involucrados. La eficiencia de las zeolitas sintetizadas muestra que estas pueden alcanzar capacidades de intercambio catiónico apropiadas para su aplicación en el tratamniento de aguas residuales industriales. La selectividad de metales pesados de la Na-filipsita fue determinada como Cu>Zn>Cr>Ni>Pb, mostrando también una gran afinidad por NH4+.
Una evaluación crítica de sistemas de buses de transporte masivo en Colombia
Authors: Moller Rolf
Published: May 2020

Un gran número de ciudades en el mundo y en América Latina están desarrollando en la actualidad proyectos de transporte masivo con base en el modelo y la experiencia colombiana del sistema de transporte rápido en bus (BRT, bus rapid tránsit), el TransMilenio de Bogotá que se caracteriza por el uso de buses articulados de ´plataforma alta´ en carriles exclusivos y estaciones elevadas cerradas. El artículo compara el sistema TransMilenio de BRT con la alternativa del transporte masivo con la tecnología de buses de ´piso bajo´. Muestra las deficiencias serias del modelo TransMilenio para los pasajeros: el sistema es relativamente lento, muy costoso, produce exclusión social y no contribuye al cumplimiento de los Objetivos de Desarrollo del Milenio. El artículo se basa principalmente en las experiencias de Bogotá y Santiago de Cali, Colombia.
Comparación de tres transformadas para distribuciones tiempo-frecuencia por medio de su aplicación a registros de vibraciones ambientales
Authors: Tischer Helene , Thomson Peter , Marulanda A. Johannio
Published: May 2020

Los estudios de vibraciones ambientales han demostrado ser eficaces para la identificación del comportamiento dinámico de edificaciones. Tradicionalmente, la transformada rápida de Fourier se ha usado para estimar el espectrograma, y así hallar la distribución tiempo-frecuencia de la señal, pero nuevas herramientas han demostrado ventajas ante este método. En este trabajo, se comparan el espectrograma ( basado en la transformada rápida de Fourier), la transformada de Choi-Williams y la distribución de seudo-frecuencias por medio de onduletas, aplicándolas a tres señales de vibraciones ambientales registradas en un edificio. Los resultados obtenidos con los tres métodos son similares, lo que valida su uso. Se observa una gran diferencia en la resolución de las imágenes y en el tiempo de procesamiento de los datos para cada caso. En cuanto a resolución, la transformada de Choi-Williams y la transformada de onduletas presentan una mejor opción que el espectrograma, lo que puede facilitar la identificación de modos de vibración poco espaciados. Por otro lado, el tiempo de cómputo para el espectrograma es mucho menor, lo que puede representar una ventaja al procesar una gran cantidad de datos.
Technological change at Bushrangers cave (LA:A11), southeast Queensland
Authors: Hiscock Peter , Hall J.
Published: May 2020

Bushrangers Cave is the oldest mainland archaeological site so far discovered in the Moreton Region of southeast Queensland. Occupation began approximately 6000 years ago, at a time when the rising seas flooded Moreton Bay and reached their present levels. Several researchers have suggested that after the infilling of the Bay food resources were more plentiful, and that during the last 6000 years there was population growth and a restructuring of Aboriginal society (Hall 1982, 1986; Morwood 1986). At least some of these changes should be visible at Bushrangers Cave and Hall (1986:101) has argued that economic and social reorganization may be reflected in the procurement of stone material by the knappers who left stone artefacts in the cave. Indications that stone from the vicinity of the cave may have been transported some distance during the late Holocene raise similar possibilities (Bird et al 1987). Exploratory excavations and preliminary analysis of the recovered artefacts was reported by Hall (1986), who demonstrated that changes in artefact frequency and raw material type did occur. Further radiocarbon dates and more detailed investigations of the artefactual assemblage are presented in this paper. While a more complete understanding of the site will require the excavation of a larger area, the data described below enable some preliminary conclusions to be drawn about chronological change in stone procurement, stoneworking technology and the nature and intensity of occupation.
Editorial
Authors: Hall Jay
Published: May 2020

As subscribers to this journal will have noticed before even turning to this page, there is something different about this issue. Not only have the QAR logo and title been altered but the entire layout has been changed inside the covers. The shift to double-column text was a decision made by your Editor in response to rising printing and mailing costs over the past couple of years coupled with an effort to keep the annual subscription in the vicinity of $20 (including postage). This new format has meant that over one hundred pages in the old format can now be printed in about sixty pages. Each issue is now not only thinner but it is less expensive to mail. Having fewer leaves provides an additional bonus in that the old almost transparent paper can now be upgraded to a much higher quality. I hope that readers will like the new look.
PERAN NPL TERHADAP HUBUNGAN ANTARA LDR DAN KINERJA PERUSAHAAN (Study Empiris Pada Bank BUMN yang Terdaftar di BEI)
Authors: Sari Laynita , Tanno Aries , Putri Anne
Published: May 2020

Terdapatnya fenomena pada tahun 2014-2016 dimana rasio ROA Bank BUMN yang terus mengalami penurunan dan tahun 2017 baru sedikit naik, fenomena selalu niknya rasio NPL Bank BUMN tahun 2014-2016 dan tahun 2017 baru mengalami sedikit penurunan serta terdapatnya research gap terhadap hasil penelitian sebelumnya merupakan alasan diangkatnya penelitian ini. Populasi dari penelitian adalah empat perusahaan bank BUMN terdaftar di Bursa Efek Indonesia. Sampel yang digunakan adalah laporan keuangan semesteran dari Bank BUMN periode 2014-2017. Teknik pengambilan sample adalah seluruh laporan keuangan semesteran dari Bank BUMN. Pengolahan data menggunakan SPSS 16 dengan Moderated Regretion Analysis. Hasil dari penelitian menunjukan bahwa LDR berpengaruh negatif signifikan terhadap ROA. Hal ini ditunjukkan dengan nilai t hitung variabel LDR (X1) adalah sebesar -5.231 dengan signifikan t 0.000 (signifikan) dan koefisien regresi sebesar -0.076, ini menunjukan bahwa LDR mempunyai pengaruh negatif dan signifikan terhadap ROA. Dan Variabel NPL bukan pememoderasi antara LDR dan ROA, sehingga dapat disimpulkan bahwa variabel NPL bukanlah variabel moderating. Hal ini ditunjukkan dengan nilai t hitung sebesar 1.591 dengan signifikansi t 0.123 (tidak signifikan) dan koefisien regresi sebesar 0,023 artinya variabel NPL tidak berpengaruh terhadap LDR dan ROA.There is a phenomenon in 2014-2016 where the ROA ratio of BUMN banks continues to decline and in 2017 only slightly increases, the phenomenon is that the NPL ratio of BUMN banks in 2014-2016 and 2017 has only slightly declined as well as the existence of a research gap against the results of previous studies is the reason for the appointment of this study. The population of this study is four state-owned bank companies listed on the Indonesia Stock Exchange. The sample used was a semester financial report from BUMN Bank for the 2014-2017 period. The sampling technique is all semester financial reports from State-Owned Banks.Data processing using SPSS 16 with Moderated Regretion Analysis. The results of the study show that LDR has a significant negative effect on ROA. This is evidenced by the t-value of the variable LDR (X1) of -5,231 with a significant t of 0,000 (significant) and a regression coefficient of -0,076, this shows that LDR has a negative and significant effect on ROA. And NPL variable is not a moderator between LDR and ROA, so it can be concluded that the NPL variable is not a moderating variable. This is evidenced by the tcount of 1.591 with a significance of t 0.123 (not significant) and a regression coefficient of 0.023 meaning that the NPL variable does not affect the LDR and ROA.
The assessment of the factuality of the syntactically subordinated proposition
Authors: Момот Седа Рубеновна , Воздвиженский Илья Николаевич
Published: May 2020

В статье описывается методика определения фактуальности пропозиции для целей автоматического анализа текстов. Особое внимание уделено пропозиции, которая находится в синтаксически подчиненном положении. Дается определение понятию «фактуальный статус» и описываются его компоненты, основным из которых является т.н. «эпистемическая оценка».

Методика заключается в построении иерархии предикативных вершин в полипредикативном предложении. На основании этой иерархии для каждой выделенной предикативной вершины с помощью правил и словаря устанавливается эпистемическая оценка.
Uma Discussão Filosófica a Respeito da Consciência
Authors: Marinho Arthur Leandro da Silva
Published: May 2020

Neste artigo buscamos compreender a fundamentação e a problemática da Consciência na Filosofia da mente. Nosso objetivo é apresentar o desenvolvimento do debate da consciência desde a modernidade até o século XX. Para isso, no primeiro momento partimos da discussão acerca da definição da natureza da consciência. Em seguida, foi apresentada a concepção de alguns filósofos da modernidade a respeito da consciência. Levamos em consideração a concepção de Descartes e continuamos com Locke, Leibniz, Hume e Kant. No terceiro momento, apresentamos, de modo geral, as novas discussões que o problema da consciência incorpora por meio do debate da relação mente-cérebro, como também, o surgimento da intencionalidade e a relação com a consciência. Por fim, acreditamos estabelecer um panorama geral sobre a consciência na Filosofia da mente e sobre os novos desafios a quem se propõe a pensar filosoficamente o tema da consciência na atualidade.
Clareamento dental interno: relato de caso
Authors: Canuto Laryssa Costa , De Araújo Yasmin Bitencourt Montenegro , Gomes Fabiana Peixoto , Do Nascimento Tiago Barbosa , De Oliveira Ana Luiza Pontes , Lemos Irenilda Pereira Lins , Lins Fernanda Freitas
Published: May 2020

Objetivo: Relatar o caso clínico de uma paciente com escurecimento dental, o tratamento realizado e a condução do caso. Detalhamento do caso: Paciente, sexo feminino, 25 anos, compareceu a clínica odontológica, com a queixa principal “meu dente escureceu”. Na história da doença atual, a paciente relatava o escurecimento do dente 11, aproximadamente um ano após um canal endodôntico, que foi realizado devido a um trauma sofrido em um acidente cerca de dois anos atrás. No exame intra oral observou-se, escurecimento na face cervical do dente citado, as cristas marginais mantiveram-se integras e a face palatina com restauração onde foi realizado o acesso da câmara pulpar para a realização do tratamento endodôntico. Foi traçado o plano de tratamento, e foi escolhida a técnica mediata walking bleaching. Considerações finais: A técnica escolhida se deu após o diagnóstico do caso, sendo ela uma forma de clareamento endógeno e torna-se uma boa alternativa para a reversibilidade cromática, visto que é menos invasiva, conservadora, rápida, segura e de baixo custo no restabelecimento estético do dente comparada as outras técnicas de clareamento mais invasivas.
Prática de campo em saúde das populações amazônicas: um relato de experiência
Authors: Fernandez Alex Costa , Oliveira Stefany Alencar de , Lobato Tatiana Caroline Lima , Matos Sérgio de Almeida , Xavier Manoel Viana , Albuquerque Firmina Hermelinda Saldanha , Monteiro Carlos Eduardo Bezerra
Published: May 2020

Objetivo: Descrever a experiência vivenciada por acadêmicos de enfermagem durante a prática de campo da disciplina saúde das populações amazônicas. Relato de experiência: Para efetivação de tal prática os discentes utilizaram duas embarcações como forma de transporte e alojamento, ambas cedidas pela Secretaria Municipal de Saúde do município, no intuito de levar assistência à saúde aos ribeirinhos, uma vez que, os mesmos têm dificuldade de acesso aos atendimentos devido à localidade. No decurso da prática foram realizadas diversas atividades, tais como: consultas de enfermagem, educação em saúde, distribuição de cestas básicas e diferentes jogos e brincadeiras. Considerações finais: Esta experiência propiciou aos acadêmicos uma visão holística acerca das dificuldades enfrentadas por esta população. Participar da elaboração e da execução das atividades nos oportunizou uma experiência única de crescimento profissional e pessoal, rica em conhecimento e aprendizado sobre a linguagem, cultura, religião e hábitos das pessoas que residem na área rural.
Hemşirelik Öğrencilerinin Hasta Güvenliği Ve Tıbbi Hatalar Konusundaki Tutumu
Authors: KARAVELİ Selda
Published: May 2020

Araştırma hemşirelik öğrencilerinin hasta güvenliği ve tıbbi hatalar karşısındaki tutumunu değerlendirmek amacıyla tanımlayıcı olarak yapılmıştır. Araştırmanın örneklemini, Mayıs-Haziran 2017 tarihleri arasında araştırmaya katılmayı kabul eden 415 hemşirelik öğrencisi oluşturmuştur. Araştırmanın verileri literatürden yararlanılarak oluşturulmuş Anket Formu ve Hemşirelikte Tıbbi Hataya Eğilim Ölçeği (HTHEÖ) kullanılarak toplanmıştır. Araştırmaya dahil edilen hemşirelik öğrencilerinin yaş ortalamaları 20.99±1.95 yıl olup, olup %84.1’i kadındır. Hemşirelik öğrencilerin %89.9’u hasta güvenliğini tehdit eden olayların bildirilmediğini, %37.8’i uygulama alanında tıbbi hata yaptığını, %82.9’u tıbbi hata ile karşılaştığında yönetici hemşireye bildirdiğini, %98.6’sının tıbbi hata yaptığında bildirmekten korktuğunu, %27’si tıbbi hata yaptığında hastayı etkilemeden fark edilip düzeltildiğinde hatayı bildirmek istemediğini ifade etmişlerdir. Öğrenci hemşirelerin HTHEÖ toplam puan ortalaması 217.57±27.12’dir. Ölçeğin alt boyut puan ortalamalarının “İlaç ve Transfüzyon Uygulamaları” alt boyutunda 80.51±10.55, “Enfeksiyonların Önlenmesi” alt boyutunda 53.99±7.13, “Düşmelerin Önlenmesi” alt boyutunda 22.29±3.35, “Hasta İzlemi ve Malzeme- Cihaz Güvenliği” alt boyutunda 38.82±5.99, “iletişim” alt boyutunda 21.93±3.91 olduğu belirlendi. Öğrenci hemşirelerin tıbbi hata ile karşılaşma durumu ile HTHEÖ “İlaç ve Transfüzyon Uygulamaları” alt boyutu puan ortalamaları (p=0.01), “Enfeksiyonun Önlenmesi” alt boyutu puan ortalamaları (p=0.046), “Hasta İzlemi ve Malzeme-Cihaz Güvenliği” alt boyutu puan ortalamaları arasındaki (p=0.01) fark istatistiksel olarak anlamlı bulunmuştur. Araştırma bulgularına göre hemşirelik öğrencilerinin tıbbi hata eğilimlerinin düşük, tıbbi hata bildirim oranının yüksek olduğu saptanmıştır. Hata bildirim oranının yüksek olması iyi bir durum olarak görünmesine rağmen, önemli olan konu hataların yapılmadan önlenmesi konusunda öğrencilerin eğitilmesidir.
Transition from Crystal-like to Amorphous-like Heat Conduction in Structurally-Complex Crystals
Authors: Hanus Riley , George Janine , Wood Max , Cheng Yongqiang , Abernathy Douglas L. , Manley Michael E. , Hautier Geoffroy , Snyder G. Jeffrey , Hermann Raphaël
Published: May 2020

The physics of heat conduction puts practical limits on many technological fields such as energy production, storage, and conversion, aswell as high-power and high-frequency electronics. Heat conduction in simple, defect-free crystals is generally well understood and seems to be well described by the phonon-gas model (PGM), where phonon wave-packets are viewed as heat carryingparticles which propagate their mean free path before being scattered. It is widelyappreciated that the PGM does not describe the full vibrational spectrum in amorphous materials, since this picture likely breaks down at higher frequencies. Furthermore, it has been shown that the PGM also breaks down in certain defective and anharmonic crystals,not only in the amorphous limit. In this work, in an attempt to bridge our understanding between crystal-like (described by the PGM)and amorphous-like heat conduction, we study structurally-complex crystalline YB14(Mn,Mg)SB11 experimentally using inelastic neutron scattering and computationally using a two-channel lattice dynamical approach. One channel is the commonly considered PGM, and the second we call the diffuson-channel since it is mathematically the same mechanism through which diffusons were defined. Our results show that the diffuson-channel dominates in YB14MnSb11 above 300 K, which is a champion thermoelectric material above 800 K. We demonstrate a method for the rational design of amorphous-like heat conduction by considering the energetic proximity phonon modes and modifying them through chemical means.
Catalyst- and Silane- Controlled Enantioselective Hydrofunctionalization of Alkenes by Cobalt-Catalyzed Hydrogen Atom Transfer and Radical-Polar Crossover
Authors: Ebisawa Kousuke , Izumi Kana , Ooka Yuka , Kato Hiroaki , Kanazawa Sayori , Komatsu Sayura , Nishi Eriko , Shigehisa Hiroki
Published: May 2020

Catalytic enantioselective synthesis of tetrahydrofurans, which are found in the structures of many biologically active natural products, via a transition-metal catalyzed-hydrogen atom transfer (TM-HAT) and radical-polar crossover (RPC) mechanism is described herein. Hydroalkoxylation of non-conjugated alkenes proceeded efficiently with excellent enantioselectivity (up to 94% ee) using a suitable chiral cobalt catalyst, N-fluoro-2,4,6-collidinium tetrafluoroborate, and diethylsilane. Surprisingly, absolute configuration of the product was highly dependent on the steric hindrance of the silane. Slow addition of the silane, the dioxygen effect in the solvent, thermal dependency, and DFT calculation results supported the unprecedented scenario of two competing selective mechanisms. For the less-hindered diethylsilane, a high concentration of diffused carbon-centered radicals invoked diastereoenrichment of an alkylcobalt(III) intermediate by a radical chain reaction, which eventually determined the absolute configuration of the product. On the other hand, a more hindered silane resulted in less opportunity for radical chain reaction, instead facilitating enantioselective kinetic resolution during the late-stage nucleophilic displacement of the alkylcobalt(IV) intermediate.
Medicinal plants as an alternative therapeutic source against salmonella
Authors: Priyanka Kumari  , Moin Khan  , Amit Gupta
Published: May 2020

Medicinal plants are found to be effective in the treatment of various diseases. These activities could be due to the presence of primary and secondary metabolites. A lot of efforts was taken related to this medicinal plant and studied various disease model-based studies. One of the diseases, i.e., Salmonella (gram-negative; non-sporing bacterium; family Enterobacteriaceae), a bacterial disease mainly effects on the gastrointestinal tract. This bacterium survives in human intestines and is shed through feces. Generally, this infection is reported in humans through the intake of contaminated water/ food and also caused through eating raw or undercooked meat, poultry and egg products. These products may be responsible for causing diarrhea, abdominal pain and fever. In India, approximately 500 children suffer from typhoid per 100,000, in the age group of 5-15 years. This disease showed a significant burden among young children and also showed several complications also reported due to Salmonella diseases, i.e., dehydration, bacteremia, reactive arthritis, etc. In contrast, Salmonella grows at a particular pH range between 4 to 8 and the maximum temperature that are required for the growth between 8 to 45 degree Celsius. In literature, about 2500 serotypes and five different strains (Salmonella Enteritidis, Salmonella Typhimurium, Salmonella Newport, SalmonellaJavianaandSalmonella Heidelberg) have been reported. The objective of our study is to collect the information related to salmonella and also understand its correlation between Salmonella and medicinal plant products.
Development of bio-relevant dissolution method for prognosis of In-vivo performance of Dipyridamole from modified release capsules
Authors: Devi Thamizhanban  , Gampa Tulja Rani  , Kathiresan krishnasamy
Published: May 2020

In-vitro biorelevant dissolution test method was developed for Dipyridamole in modified release multi-particulate dosage form, to simulate the product drug release after oral administration to human.  The Dipyridamole concentration in blood plasma achieved after oral administration under pre-prandial (fasting) condition were used for deriving the target dissolution profile deconvoluting the plasma concentration using numerical deconvolution technique. The fraction of drug absorbed was considered as the target dissolution profile. The drug product was tested by using the dissolution method recommended by office of generic drugs, and the dissolution results observed are not comparable with the target dissolution profile.  Dissolution method was developed using reciprocating cylinder, Bio-Dis (apparatus -3 as per USP), by simulating the pre-prandial conditions. A full factorial design of experiment was carried out to achieve the target dissolution profile. Media volume and dips per minute (DPM) are considered as main factors, in design of experiment. The dissolution results achieved with media volume 250ml and 10DPM were found to be comparable with target dissolution profile and observed with the F2 value (similarity factor) of 92%. The developed dissolution method demonstrates a very good in-vitro/in-vivo correlation under pre-prandial condition, and shall be used as a predictive in-vitro tool for evaluation Dipyridamole extended release capsules.
Correlation between Voltage Concepts and Daily Life Activities Using POE2WE Model as Character Education Reinforcement
Authors: Diana Rhifa , Aprilia Ayu Amelia , Curnitasari Afiif , Nana Nana
Published: May 2020

The purpose of this study is to connect the concept of stress formulas in everyday life as a reinforcement of character education in students. This study uses a qualitative approach in the form of descriptive theoretical data with library study techniques. This study also uses the POE2WE model (Prediction, Observation, Explanation, Elaboration, Write, Evaluation). As a method of learning to strengthen character education, it places more emphasis on elaboration to strengthen the character education of student. The results of this study indicate that the concept of stress in physics can be used as a reinforcement of character education for students.
Peculiarities of Applying Investment Tax Deductions
Authors: Bondareva N. A.
Published: May 2020

The imposition of economic sanctions on the Russian Federation by the countries of Europe and the United States, the introduction of import substitution required the modernization of production, the development of new technologies and the growth of labor productivity. To achieve these goals, significant investments are required in the economy, in particular, attracting investments from individuals and legal entities. The paper describes tax aspects of investing. The methodological basis of the study is tax legislation and local legislative acts of the regions. The analysis of investment activity of individuals shows the state of fixed assets of companies and the dynamics of investment activity for some types of economic activity in conformity with the current state policy to restore fixed capital. The author revealed that the number of individual investors and the amount of investment deductions received by them have increased more than twice, but the investments volume in the segment of large and medium-sized businesses continued to decrease. There was tension in the formation of regional budgets. To intensify the investment activity of companies, the author recommends to extend the application of the investment tax deduction to lowincome companies and reformat regional budgets for the least loss of funds when they are temporary diverted. The study may be of interest to state and regional authorities when developing indicators for the application of investment tax deductions.
Accounting for Indicators of Budget Expenditure for Long-term Obligations Authorization
Authors: Anzhenko V. S.
Published: May 2020

Since the budget legislation changes every year, new federal standards are implemented, modern information technologies are introduced, accounting (budget accounting) in the public institutions is constantly developing. The article is devoted to the particularities of accounting for budget expenditure authorization (BEA) in these institutions as their both professional and economic activities have undergone certain changes. The methodological base of the study involves the approved normative legal acts and documents regulating accounting (budget accounting) for budget expenditure authorization. The research result is the development of an algorithm for the flow of limits of budgetary obligations (LBO) to account for and implement them when subsidies are granted for an extended period up to three years. The author provides recommendations on developing accounting policy on the example of public institutions of St. Petersburg for the year 2020. The results of the research could be of theoretical and practical interest for management and specialists of the public institutions in charge of keeping accounts and developing accounting policy.
Goodwill and Evaluation of Organization’s Effectiveness
Authors: Demina I. D. , Bezrukov D. A.
Published: May 2020

The article describes the relationship between value creation, performance measurement and accounting for goodwill in accordance with the IFRS and US-GAAP. It shows how to use accounting information collected to verify goodwill for impairment in accordance with IAS36 (“Impairment of Assets”), and FAS142 (“Goodwill and Other Intangible Assets”) to improve internal control. The authors prove that the information for estimating goodwill of a company can make the foundation for the development of a system of performance measurement, which in turn provides the data about value creation and its future use. The paper provides practical evidence that adjustments of the information used for impairment testing generate the data which meet the requirements of optimal system of performance management. The paper contributes to the theory of accounting by developing an innovative indicator to measure the performance of the actual value created.
The conditions of self-awareness among faculty member on excellent academic services
Authors: Taufik Taufik , Ifdil Ifdil
Published: May 2020

Supposed educators can provide excellent service to consumers, in the academic community of Universitas Negeri Padang. Universitas Negeri Padang comes in at the 61st (sixty-one) out of the 100 (one hundred) best universities in Indonesia. Being one of the best universities in Indonesia’s educators should have excellent service to consumers who in this case are students. However, in fact, many educators still do not have self-awareness (self-awareness) awareness) in providing excellent service to consumers. This is evidenced by the identification of self-awareness conditions of respondents in the high category is still low compared to the medium category. The following report will describe the condition of self-awareness of educators.
Pengaruh pembelajaran berbasis masalah terhadap efikasi menulis ilmiah mahasiswa
Authors: Suranata Kadek
Published: May 2020

This study aims to evaluate the impact of a scientific writings course conducted with a problem-based learning model to improve the efficacy of students in scientific writing and understanding of scientific writing procedures. Subject of research consist 31 students in Guidance and Counseling Department. The results showed an increase in students understanding about procedures on compose a scientific papers and also experienced a significant increase overall and in every aspect of the efficacy tested.
Meningkatkan Proses dan hasil Belajar Siswa pada tema Selamatkan Makhluk Hidup dengan Metode Ekplorasi Lingkungan Sekitar pada Siswa Kelas VI
Authors: Desrina Desrina
Published: May 2020

The background of this research is that science learning has been theoretical without students knowing how the application of learning in everyday life and learning Science does not encourage students to care about the environment so students cannot know the process of a natural event in living things, such as plants. the author wants students to be closer to nature and at the same time can increase the process and learning outcomes, especially those related to science. The approach used is a qualitative approach. The research data was obtained from the results of the assessment of learning implementation plan (RPP), the results of the observation sheet on the implementation of learning with the Approach to Environmental Exploration Approach from the aspects of teachers, students and evaluation. The data source is the process of implementing the Neighborhood Exploration approach to the theme of Saving Sentient Beings in class VI of SD Negeri 23 Painan Utara. The results of the study are the learning of Science with the Approach to the Environmental Environment Exploration will lead to an attitude of student concern for the environment, motivating students to learn. This is evidenced by the increase in student learning outcomes, namely cycle I completeness of students 61% with an average value of 73 and cycle II completeness of students 83% with an average value of 84. Based on the results of the study, it is suggested to the following parties (1) for teachers The Neighborhood Exploration approach in learning Science because it can cause students to care about the environment and improve student learning outcomes, (2) the reader should be able to add knowledge to the reader.
The development of integrated thematic textbooks with scientific approach for elementary schools students
Authors: Elvita Winda , Amini Risda , Ahmad Riska
Published: May 2020

The preliminary survey in Elementary School in Lima Puluh Kota District showed that the textbook for thematic learning was not in accordance with the principles of integrated learning and not yet in accordance with the around environment of the students, so that the lesson was not understood of the students. therefore the purpose of this study is to develop integrated thematic textbooks using the scientific approach valid, practical and effective.The research used the four D model of Tiagahajan that consist of 4 stages, namely: define, design, develop, and disseminate. The research instruments were observation sheets, validation sheets, questionnaires, learning outcomes tests. The results showed that integrated thematic textbooks with a scientific approach include valid categories based on expert judgment. Textbooks include very practical categories based on teacher and student responses. Effectiveness of textbooks based on student learning activities and mastery learning. The most of students were active in learning. The student learning outcome in the knowledge, skills, and attitudes domain has been include the mastery learning category for the most of students (more than 85%). Thus it can be concluded that integrated thematic textbooks with scientific approaches were feasibility of being used as reference books in Elementary School.
Upaya Meningkatkan Kedisiplinan Siswa melalui Layanan Bimbingan Kelompok
Authors: Fadhilah Hilyati , Syahniar Syahniar , Asnah Megaiswari Biran
Published: May 2020

Discipline is one of the keys to a person's success, especially a student. If students are disciplined in learning, students will get good learning outcomes. Due to the development of the era in this global era, many students have begun to decrease their discipline in learning because many students have used smartphones, internet cafes and social gatherings. Therefore, it is hoped that through group guidance services can improve student learning discipline