bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative Study on In Situ and Laboratory Testing of Concrete Cores with Different Height to Diameter Ratios
Authors: Reddy Bijivemula Sudheer Kumar , Wanjari Swapnil Purushottam , Shiva Kumar Varun Yalehalli
Published: December 2018

The concrete core test is usually conducted to determine the compressive strength of hardened concrete at the site. A laboratory core test takes approximately 2 to 3 days as a result of operations like core cutting, transportation, curing, sawing, sulphur capping, testing, etc. In order to reduce processing time, an attempt was made to test the concrete core compressive strength at the site by fixing an in situ testing machine over the drilled core specimen with the help of anchor fasteners. The research was conducted using two types of in situ testing machines. Cores with diameters of 24 mm and height to diameter (H/D) ratios of 1, 1.5, and 2 were tested using machine 1. Similarly, cores of diameter 24 mm, 42 mm, and 67 mm with H/D ratio 1, 1.5, and 2 were tested using machine 2. The in situ compressive test results were compared with the results from the laboratory test conducted on an equal number of cores. Student t-tests were conducted between the results of both laboratory and in situ core tests. In all the cases, the t-statistical values were less than the t-critical, which indicates that there is no significant difference between both the methods. The results were analyzed for variation of core strength with respect to H/D ratio and diameter. It was observed that in both the in situ and laboratory core testing methods, the core strength decreased with an increase in H/D ratio and increased with an increase in core diameter. However, the variance in strength with increasing core diameter was proved to be not significant with the help of the ANOVA test. Multiplication factors used to determine the equivalent cube strength from the in situ core strength of concrete were calculated for corresponding diameters and H/D ratios.
Casa de apoio: suporte às mulheres com câncer de mama
Authors: Kuhn Carla Inês , Da Silva Simionato Débora Góes , De Bortoli Cleunir de Fátima Candido , Amorim Coelho Joeci Baldin
Published: December 2018

Objetivo: conhecer o suporte oferecido às mulheres com câncer de mama em uma casa de apoio. Métodos: estudo qualitativo, descritivo e exploratório, realizado em uma casa de apoio às pessoas com câncer. Participaram do estudo seis mulheres em tratamento para câncer de mama. Os dados foram coletados pelo grupo focal e analisados pela análise de conteúdo. Resultados: o enfrentamento do câncer de mama após o diagnóstico é marcado pelo medo e insegurança, sendo a casa de apoio como suporte social e psicológico, representando confiança e fortalecimento para o tratamento. Considerações finais: a casa e grupos de apoio, a equipe de enfermagem, amigos e familiares são importantes suportes para contribuir com um bom prognóstico da mulher que vive com câncer de mama.
Kontribusi Power Otot Tungkai dan Keseimbangan terhadap Tendangan Mawashi Geri Atlit Kempo
Authors: Sepriadi Sepriadi
Published: December 2018

Penelitian ini bertujuan untuk melihat seberapa besar kontribusi daya ledak otot tungkai dan keseimbangan terhadap kemampuan Tendangan Mawashi Geri atlit Kempo Dojo Balai Kota Padang. Metode penelitian ini adalah metode korelasional. Populasi penelitian ini seluruh kenshi yang terdaftar pada Dojo Balaikota Padang, sedangkan sampel diambil secara purposive sampling sehingga yang menjadi sampel adalah kenshi putra dengan jumlah 31 orang. Data daya ledak otot tungkai diambil dengan standing board jump, keseimbangan dengan tes stork stand, dan kemampuan tendangan mawashi geri dengan tes kemampuan tendangan mawashi geri. Teknik analisis data penelitian ini menggunakan analisis korelasi product moment dan korelasi ganda lalu dilanjutkan dengan uji koefesien determinasi. Hasil analisis data menunjukkan bahwa: (1). Kontribusi antara daya ledak otot tungkai terhadap kemampuan tendangan mawashi geri yaitu sebesar 41.46%; (2) Kontribusi antara keseimbangan terhadap kemampuan tendangan mawashi geri yaitu sebesar 20.85%; (3) Kontribusi antara daya ledak otot tungkai dan keseimbangan secara bersama-sama terhadap kemampuan tendangan mawashi geri, yaitu sebesar 48.93%.
Hormigas poneroides y ectatomminas (Hymenoptera: Formicidae) en fragmentos boscosos del piedemonte llanero y altillanura del Meta, Colombia
Authors: Ladino Natalia , Jiménez-C Elisabeth , Yara-O Claudia
Published: December 2018

Este trabajo contribuye al conocimiento básico de las hormigas poneroides y ectatomminas en fragmentos de bosque del piedemonte llanero, altillanura y la transición entre estas dos zonas en el departamento del Meta. Se generaron y compararon listas de especies de las tres localidades de estudio. Los muestreos se realizaron durante septiembre y noviembre del 2015 y febrero del 2016 mediante captura manual, trampas de caída y recolección de 1 m2 de hojarasca para su procesamiento en sacos Winkler. En total, se registraron 40 especies, 32 de ellas con nombre, pertenecientes a doce géneros y cuatro subfamilias. La riqueza y abundancia de especies tendió a disminuir desde el piedemonte llanero hacia la altillanura. Los resultados constituyen la mayor riqueza de hormigas poneroides y ectatominas reportadas para estas zonas. Se resalta la importancia de los fragmentos de bosque para la presencia de este grupo de hormigas, y la necesidad de incrementar estudios de línea base hacia la región de la Orinoquia Colombiana.
Reproductive incompatibility and fitness components in Neoleucinodes elegantalis races (Lepidoptera, Crambidae) from three Solanaceae hosts
Authors: Díaz-Montilla Ana Elizabeth , Baena-Bejarano Nathalie , Saldamando Clara Ines , Montoya-Lerma James
Published: December 2018

Neoleucinodes elegantalis (Lepidoptera, Crambidae) is a Neotropical Solanaceae pest that has evolved into four host races due to host plant association. In this study, prezygotic and postzygotic isolation were evaluated in parental and F1 generations collected from Solanum lycopersicum (S. l), S. quitoense (S. q) and S. betaceum (S. b), representing medium size (S. l, S. q) and large size genitalia races (S. b). 617 adults were obtained in the laboratory and 106 copulated. One spermatophore per female was found in the bursa copulatrix, suggesting monoandry. Crosses between adults mostly occurred assortatively. A third of the female’s eggs laid occurred, but females from ♀S. b x ♂ S. l, ♀S. l x ♂S. b and S. l x S. l did not. In the cross, ♀S. l x ♂ S. q and its reciprocal F1 progeny developed into larvae. Reproductive success only occurred in three crosses: S. q x S. q, ♀ S. q x ♂ S. b and its reciprocal progeny. All the progeny from these crosses reached adulthood. The parental population showed differences in pupae and adult measurements according to host. The results on reproductive isolation obtained here suggest speciation in N. elegantalis due to host race differentiation which is relevant for the improvement of the management of this species, especially when the species has evolved reproductive isolation among races. We suggest that the use of their host plants in sympatry might reduce N. elegantalis densities in the field since hybrids between its races have low survival rates and to evaluate the possibility of pheromone composition differentiation among races given the results on assortative mating obtained here.
Mortalidad de reptiles en carreteras del piedemonte de los llanos orientales colombianos
Authors: Astwood-R Jorge Anthony , Reyes-D Mayra Cristina , Rincón-A Mónica Tatiana , Pachón-G Jorge , Eslava-M Pedro René , Parra-S Carlos Alberto
Published: December 2018

Las colisiones de vehículos con reptiles son una de las causas más importantes de pérdida de biodiversidad originadas por la construcción y funcionamiento de infraestructura vial. El objetivo del estudio fue analizar la mortalidad de reptiles en carreteras del piedemonte de los llanos orientales colombianos. Se analizaron eventos de colisión estableciendo puntos críticos, tasas de atropellamiento y su relación con el tipo de cobertura. Se realizaron recorridos entre abril y septiembre de 2015 en tres tramos de dos carreteras nacionales del departamento del Meta. Se utilizó un vehículo a velocidad media de 40 km/h y se registraron eventos de colisiones de automóviles con reptiles, documentando ubicación, identificación y cobertura asociada. Se utilizaron estimadores y pruebas de similitud para diversidad de especies. Se identificaron puntos críticos y tasas de colisión mediante mapas de calor e índices kilométricos de atropellamiento. Se registraron 204 eventos de colisión para 33 especies de reptiles con tasas de colisión entre 0,019 y 0,042 colisiones/km/día y se identificaron 30 puntos críticos de atropellamiento. Las tasas de colisión calculadas presentan una relación inversa con el tipo de cobertura ya que la presencia de bosques, matorrales y humedales está relacionada con menor cantidad de colisiones. Estos hallazgos representan una herramienta importante para implementar estrategias de prevención y mitigación de atropellamientos de fauna en la Orinoquia colombiana.
Extended exponentiated Nadarajah-Haghighi model: Mathematical properties, characterizations and applications
Authors: Alizadeh Morad , Rasekhi Mahdi , Yousof Haitham M. , Ramires Thiago G. , Hamedani G. G.
Published: December 2018

In this article, a new four-parameter model is introduced which can be used in mod- eling survival data and fatigue life studies. Its failure rate function can be increasing, decreasing, upside down and bathtub-shaped depending on its parameters. We derive explicit expressions for some of its statistical and mathematical quantities. Some useful characterizations are presented. Maximum likelihood method is used to estimate the model parameters. The censored maximum likelihood estimation is presented in the general case of the multi-censored data. We demonstrate empirically the importance and exibility of the new model in modeling a real data set.
IMPACT OF AMPK ACTIVATOR METFORMIN ON SPERM QUALITY
Authors: Mong Diep Nguyen Thi , Blesbois Elisabeth
Published: December 2018

Semen cryopreservation allows crucial management of animal genetic diversity. However, the freeze-thaw process causes biochemical and physical alterations, impairing sperm energy-dependent functions. Currently, many chemicals are added to the media to enhance frozen-thawed sperm quality during artificial insemination. The aims of this study was to determine the effects of Metformin (Metf) on fresh chicken sperm motility and ability to perform acrosome reaction, and to evaluate Metf’s effects on the functions of cryopreserved sperm. Chicken semen was diluted and incubated at 35°C in media supplemented with or without different doses of 5’-AMP-Activated Protein Kinase (AMPK) activator, Metf (0,5 to 5 mM). We then looked for the concentration improving the most sperm quality to use it in the cryopreservation media used for chicken sperm. Our results show that 1 mM Metf is the concentration giving the best results regarding sperm quality. AMPKα phosphorylation, viability, acrosome reaction ability (AR), and various motility parameters, were negatively affected by the freeze-thaw process, and that Metf partially restored them. Sperm quality improved (mean increased by 23% for motility, by 10% for viability) as well as AMPKα phosphorylation (mean increased by 30%). Moreover, fluorescent intensity levels of phospho-AMPK were also stronger with Metf than in the control. These results show that the presence of Metf in fresh semen has a positive impact on the quality of sperm and helps reducing the gradual decline in sperm motility caused by cryopreservation by partially restoring several essential sperm functions, and thus leads to a better overall quality of cryopreserved sperm.
POTENTIAL GROWTH INHIBITION ACTIVITY OF FECAL MATERIALS, MUCUS AND CULTURED WATER OF TILAPIA OREOCHROMIS NILOTICUS ON ACUTE HEPATOPANCREATIC NECROSIS DISEASE (AHPND) - CAUSING PATHOGEN VIBRIO PARAHAEMOLYTICUS
Authors: Phuong Thanh Le Ngoc , Co Ho Hai , Truc Ly Trinh Thi , Tung Hoang , Hong Hanh Bui Thi
Published: December 2018

Shrimp farming plays a key role in economy of many countries all over the world. Unfortunately, a disease called Acute Hepatopancreatic Necrosis Disease (AHPND) or Early Mortality Syndrome (EMS) caused by Vibrio parahaemolyticus spreading from Asia to Central America costs shrimp industry billions of dollars annually. In the past few years, scientists from multi-disciplinary field collaborated to find out a solution for this disease. Until now, there are not any effective approaches to prevent and cure this disease. However, co-culturing shrimp with tilapia was carried out to limit the outbreak of AHPND in farm scale in many countries. Some previous studies also mentioned the benefits of this farming method to prevent other pathogens. The aim of this research is to determine whether intrinsic factors or cultured water of tilapia play role in inhibition of V. parahaemolyticus – pathogen causing AHPND. These factors include: mucus on tilapia gill and skin, tilapia fecal material, and microbiota or dissolved chemicals in culturing of tilapia. Anti-V. parahaemolyticus activity of tilapia (Oreochromis niloticus) fresh and overnight incubated feces and mucus were tested using agar well diffusion method. The effectiveness of feces and mucus inhibition was not clear, both of samples generated a weak inhibition on V. parahaemolyticus. Determination of V. parahaemolyticus inhibiting factor of tilapia cultured water using challenge test showed that dissolved compounds (smaller than 0.22 µm) inhibited the growth of V. parahaemolyticus. The presence of these compounds in tilapia-cultured water reduced V. parahaemolyticus to 17 times lower than that of the negative control with the seawater alone within the first three hours post challenge.
Direct-Acting Antivirals in Hepatitis C Virus-Associated Diffuse Large B-cell Lymphomas
Authors: Merli Michele , Frigeni Marco , Alric Laurent , Visco Carlo , Besson Caroline , Mannelli Lara , Di Rocco Alice , Ferrari Angela , Farina Lucia , Pirisi Mario , Piazza Francesco , Loustaud-Ratti Véronique , Arcari Annalisa , Marino Dario , Sica Antonello , Goldaniga Maria , Rusconi Chiara , Gentile Massimo , Cencini Emanuele , Benanti Francesco , Rumi Maria Grazia , Ferretti Virginia Valeria , Grossi Paolo , Gotti Manuel , Sciarra Roberta , Tisi Maria Chiara , Cano Isabel , Zuccaro Valentina , Passamonti Francesco , Arcaini Luca
Published: December 2018

Background

International guidelines suggest hepatitis C virus (HCV) eradication by direct-acting antivirals (DAAs) after first-line immunochemotherapy (I-CT) in patients with HCV-positive diffuse large B-cell lymphoma (DLBCL), although limited experiences substantiate this recommendation. Moreover, only a few data concerning concurrent administration of DAAs with I-CT have been reported.

Subjects, Materials, and Methods

We analyzed hematological and virological outcome and survival of 47 consecutive patients with HCV-positive DLBCL treated at 23 Italian and French centers with DAAs either concurrently (concurrent cohort [ConC]: n = 9) or subsequently (sequential cohort [SeqC]: n = 38) to first-line I-CT (mainly rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone [R-CHOP]-like).

Results

Median age was 61 years, 89% of patients had stage III/IV, and 25% presented evidence of cirrhosis. Genotype was 1 in 56% and 2 in 34% of cases. Overall, 46 of 47 patients obtained complete response to I-CT. All patients received appropriate DAAs according to genotype, mainly sofosbuvir-based regimens (n = 45). Overall, 45 patients (96%) achieved sustained virological response, 8 of 9 in ConC and 37 of 38 in SeqC. DAAs were well tolerated, with only 11 patients experiencing grade 1–2 adverse events. Twenty-three patients experienced hepatic toxicity (grade 3–4 in seven) following I-CT in SeqC, compared to only one patient in ConC. At a median follow-up of 2.8 years, two patients died (2-year overall survival, 97.4%) and three progressed (2-year progression-free survival, 93.1%).

Conclusion

Excellent outcome of this cohort of HCV-positive DLBCL suggests benefit of HCV eradication by DAAs either after or during I-CT. Moreover, concurrent DAAs and R-CHOP administration appeared feasible, effective, and ideally preferable to deferred administration of DAAs for the prevention of hepatic toxicity.
First North American species of the European genus Archaemegaptilus from the Upper Carboniferous Pottsville Formation of northern Alabama (Palaeodictyoptera: Archaemegaptilidae)
Authors: Beckemeyer Roy J. , Engel Michael S.
Published: December 2018

A new palaeodictyopteran (Palaeodictyopterida: Palaeodictyoptera) taxon is described based on a nearly complete hind wing found in the Pottsville Formation (Upper Carboniferous) of Bibb County, Alabama.  Archaemegaptilus blakelyi Beckemeyer & Engel, new species, is the sixth insect genus and species described from the Pottsville of Alabama and the second palaeodictyopteran from those deposits.  It is the third valid species assigned to the family Archaemegaptilidae.  Previously known species are A. kiefferi Meunier, from the Commentry of France and A. schloesseri Brauckmann et al., from the Hagen-Vorhalle of Germany.
Single-cell mapping of lineage and identity via CellTagging v4
Authors: A. Biddy Brent , Kong Wenjun , Kamimoto Kenji , Guo Chuner , Waye Sarah , Sun Tao , A Morris Samantha
Published: December 2018

Single-cell technologies are offering unprecedented insight into complex biology, revealing the behavior of rare cell populations that are typically masked in bulk population analyses. One current limitation of single-cell approaches is that lineage relationships are lost as a result of cell processing, restricting interpretations of the data collected. Elegant computational approaches have been developed in an effort to infer these missing observations, but it remains a challenge to reconstruct true reprogramming trajectories using these tools. Although sophisticated lineage tracing solutions to connect cell history with fate are emerging, these protocols are either not compatible with high-throughput scRNA-seq, or require genome editing strategies that are not readily deployed in some systems. Here, our protocol describes a single-cell resolution clonal tracking approach, ‘CellTagging’, based on combinatorial cell indexing, permitting the parallel capture of lineage information and cell identity. CellTagging integrates with high-throughput single-cell RNA-sequencing, where iterative rounds of cell labeling enable the construction of multi-level lineage trees. This straightforward lentiviral-labeling approach can be applied to an array of cell biological applications to simultaneously profile lineage and identity, at single-cell resolution.
Weaving Teaching Situations in Environmental Education Seeking Sustainability in the Cerrado
Authors: Ferreira dos Santos Arruda Aline , Farias Maria Eloisa , Garbouj Myriam
Published: December 2018

The didactic situations elaborated with teaching and learning strategies that are significant can contemplate the construction of skills and competencies present in the National Curricular Common Base (BNCC). This article aims to present a part of the Didactic Situations focused on Environmental Education for Sustainability in the Cerrado, developed in a public school in Goiás. The methodological procedures used are part of qualitative and descriptive research. Data collection involved 160 students and 10 elementary school teachers. The data collection instruments used were periodic meetings for study, application of semi structured questionnaires and analysis of five didactic situations elaborated and developed by the group of teachers. In the evaluation of the project the participating students cited as educational activities: planting of seedlings 39%, collecting garbage 25%, lecture 13%, recycling 10%, project environment 7% and 6% respect the next. In this sense, the objectives of this study were achieved. It was possible to perceive that the Didactic Situations worked playfully, using different teaching strategies, contributed positively to the construction of students' knowledge as well as their ways of exposing and socialising the contents of Environmental Education explored in the Cerrado.
Central Venous Access Techniques for Cardiac Implantable Electronic Devices
Authors: Barsamyan Sergey ,   Cardiology Department, John Radcliffe Hospital, Oxford University Hospitals NHS Trust, Oxford, UK, Rajappan Kim ,   Cardiology Department, John Radcliffe Hospital, Oxford University Hospitals NHS Trust, Oxford, UK
Published: December 2018

The implantation of cardiac implantable electronic devices remains one of the core skills for a cardiologist. This article aims to provide beginners with a practical ‘how to’ guide to the first half of the implantation procedure  central venous access. Comparative descriptions of cephalic cutdown technique, conventional subclavian, extrathoracic subclavian and axillary venous punctures are provided, with tips for technique selection and troubleshooting.
Finanças pessoais: uma análise do comportamento de estudantes de Ciências Contábeis
Authors: Marques Mariana Ferreira Soares , Takamatsu Renata Turola , Avelino Bruna Camargos
Published: December 2018

Resumo: A forma como as pessoas lidam com suas finanças pessoais é um tema cada vez mais relevante diante da complexidade dos meios de pagamento atuais, das formas de investimento existentes e da oferta do crédito restrita. Neste estudo propõe-se a analisar como os estudantes de Ciências Contábeis da Universidade Federal de Minas Gerais (UFMG) têm gerenciado suas finanças, a propensão ao endividamento ou à poupança desses indivíduos e a influência de aspectos comportamentais — o autocontrole, a visão de curto prazo, a preferência por crédito e a propensão a planejar — na gestão dos recursos. Foi realizado um estudo quantitativo, com a aplicação de questionários a 104 estudantes. Os resultados da pesquisa foram analisados por meio da análise fatorial, testes de correlação e de diferenças de médias. Observou-se, de forma geral, que os acadêmicos de Ciências Contábeis são altamente bancarizados e, em grande parte, possuem poupança e realizam depósitos regulares. Foi identificada uma maior propensão à poupança em alunos inseridos em famílias com renda superior a R$ 5.201,00 e uma aversão a crédito de estudantes que poupam com a finalidade de prevenir emergências. A idade dos alunos não esteve correlacionada a nenhum padrão de comportamento.Palavras-chave: Finanças Pessoais. Propensão ao endividamento. Propensão à poupança.Personal finance: an analysis of Undergraduate Accounting students behavior  Abstract: The ways in which people deal with money is relevant given the complexity of current payment methods, existing types of investment and the credit supply restrictions. This research's aim was to assess how Undergraduate Accounting students manage their finances, their propensity for getting into debt, propensity to save and analyze how behavioral aspects (self-control, short-term thinking, preference for credit and propensity to plan) influence resources’ management. We have applied a questionnaire to 104 students.  We used principal component analysis, correlations and tests of differences between means. The results suggest that Accounting students are highly banked and, most of them have savings account and make periodic deposits. We have identified a higher Propensity to save money in families with incomes greater than R$ 5.201,00 and debt aversion of students who save to prevent emergencies. Student's age was not correlated with any behavior pattern.Keywords: Personal Finance. Propensity to save. Propensity for getting into debt.
GESTÃO DO TERRITÓRIO: análise econômica da mineração nos municípios da Amazônia Oriental paraense (2010 a 2017)
Authors: Medeiros Gláucia Rodrigues Nascimento , Medeiros Marcus Vinicius Batella , Medeiros Luana Faria
Published: December 2018

TERRITORIAL MANAGEMENT: economical analysis in counties with mining in the Eastern Amazon paraense (2010 to 2017)GESTIÓN DEL TERRITORIO: análisis económico de la minería en los municipios de la Amazonia Oriental Pará (2010 a 2017)A Amazônia Oriental ao qual o Pará está inserido apresenta abundantes riquezas energéticas, possuindo uma elevada arrecadação de recursos advindos das atividades de exploração econômica. Tais recursos se traduzem em impostos, taxas e compensações, movimentando o PIB do Estado do Pará e dos Municípios de Parauapebas e Canaã dos Carajás, colocando o estado e os municípios como os principais vetores econômicos, devido as exorbitantes cifras de milhões de reais arrecadadas, sendo responsável pela influência direta do Produto Interno Bruto Nacional (PIB), dos Estados e dos Municípios que recebem tais receitas. Ao se pensar em uma efetiva Gestão do Território, se faz necessário avaliar o montante arrecadado anualmente, para posteriormente mensurar se as aplicações estão agregando valor e sendo revertidos na melhoria da qualidade de vida local, em investimentos em infraestrutura, na qualidade ambiental na saúde e educação da população dos municípios impactados. Neste primeiro momento é necessário incrementar a pesquisa da região, buscando servir de aporte para os atores locais e posteriormente, realizar uma avaliação de desempenho contínua, buscando mais efetividade e objetivação no desenvolvimento dos territórios impactados.Palavras-chave: Amazônia Oriental; Mineração; Pará; Território.ABSTRACTThe Eastern Amazon, where Pará is inserted, presents abundant energetic wealth, possessing a high ammount of resources derived from the activities of economic exploration. These resources are converteded into taxes, fees and compensation, moving the GDP of the state of Para and the municipalities of Parauapebas and Canaã dos Carajás, placing the state and municipalities as the main economic vectors, due to the exorbitant figures of millions of reais collected, being responsible for the direct influence of the National Gross National Product (GDP), of the States and Municipalities that receive such revenues. When thinking about an effective Land Management, it is necessary to evaluate the amount of tributes collected annually, to later measure if the applications are adding value and being reverted in the improvement of local quality of life, investments in infrastructure, environmental quality in health and education of the population of impacted municipalities. In this first moment it is necessary to increase the research into the region, seeking to contribute to the local actors and later, to carry out an evaluation of continuous performance, seeking more effectiveness and objectivation in the development of the impacted territories.Keywords: Eastern Amazon; Mining; Pará; Territory.
Presentación
Authors: Vaillant Denise
Published: December 2018

En esta nueva edición de Cuadernos de Investigación Educativa compartimos con ustedes destacados artículos de autores nacionales e internacionales. Se trata de contribuciones que nos acercan a diferentes problemáticas y desafíos de la educación actual y que nos aproximan a diferentes contextos y niveles educativos con un denominador común: la preocupación por investigar y por contribuir a la mejora de la educación.
DECISION-MAKING IN A HYBRID TWO-STEP PROBLEM OF DYNAMIC CONTROL
Authors: Kleimenov Anatolii Fedorovich
Published: December 2018

The equations of motion of the controlled system in the two-step problem under consideration at a fixed time interval contain the controls of either one player or two players. In the first step (stage) of the controlled process (from the initial moment to a certain predetermined moment), only the first player controls the system, which solves the problem of optimal control with a given terminal functional. In the second step (stage) of the process, the first player decides whether the second player will participate in the control process for the remainder of the time, or not. It is assumed that for participation the second player must pay the first side payment in a fixed amount. If «yes», then a non-antagonistic positional differential game is played out, in which the Nash equilibrium is taken as the solution. In addition, players can use «abnormal» behaviors, which can allow players to increase their winnings. If « no », then until the end of the process continues to solve the problem optimal control.
ON SETS OF METRIC REGULARITY OF MAPPINGS IN SPACES WITH VECTOR-VALUED METRIC
Authors: Pluzhnikova Elena Aleksandrovna , Zhukovskaya Tatyana Vladimirovna , Moiseev Yuriy Anatol’evich
Published: December 2018

Spaces with vector-valued metric are considered. The values of a vectorvalued metric are elements of a cone in some linear normed space. The concept of the set of metric regularity for mapping in spaces with vector-valued metric is formulated. A statement on the stability of the set of metric regularity of a given mapping for its Lipschitz perturbations in spaces with vector-valued metric is obtained.
ON CONTINUATION IN METRIC SPACES
Authors: Zhukovskiy Sergey Evgenyevich , Ngomirakiza Larry-Elvis Innosentovich
Published: December 2018

We study locally injective covering mappings between metric spaces. We show that under natural assumptions these mappings have continuation property.
SIGNS OF REGULARITY AND STABILITY OF DIFFERENTIAL EQUATIONS OF HIGHER ORDER
Authors: Perov Anatoly Ivanovich , Kostrub Irina Dmitrievna
Published: December 2018

On the basis of previous works of authors new signs of regularity and stability of vector-matrix differential equations with a variable main part are specified.
ON A CONTROLLABILITY PROBLEM FOR A DIFFERENTIAL INCLUSION WITH FRACTIONAL DERIVATIVES OF CAPUTO
Authors: Petrosyan Garik Gagikovich , Koroleva Oxana Yur’evna
Published: December 2018

The paper gives the controllability problem for a differential inclusion of fractional order in a Banach space.
EUCLIDEAN DISTANCE TO A CLOSED SET AS A MINIMAX SOLUTION OF THE DIRICHLET PROBLEM FOR THE HAMILTON–JACOBI EQUATION
Authors: Uspenskii Alexandr Alexandrovich , Lebedev Pavel Dmitrievich
Published: December 2018

A combined (jointing analytical methods and computational procedures) approach to the construction of solutions in a class of boundary-value problems for a Hamiltonian-type equation is proposed. In the class of problems under consideration, the minimax (generalized) solution coincides with the Euclidean distance to the boundary set. The properties of this function are studied depending on the geometry of the boundary set and the differential properties of its boundary. Methods are developed for detecting pseudo-vertices of a boundary set and for constructing singular solution sets with their help. The methods are based on the properties of local diffeomorphisms and use partial one-sided limits. The effectiveness of the research approaches developed is illustrated by the example of solving a planar timecontrol problem for the case of a nonconvex target set with boundary of variable smoothness.
SOME PROPERTIES OF THE GENERALIZED SOLUTIONS OF AN INITIAL VALUE PROBLEM FOR FUNCTIONAL-DIFFERENTIAL INCLUSION WITH MULTIPLE-VALUED IMPULSES
Authors: Filippova Olga Viktorovna , Shindiapin Andrey Igorevich
Published: December 2018

Deviation estimates in space of piecewise continuous functions of a set of the generalized decisions from beforehand given function are received. The continuous dependence of the generalized decisions on starting conditions is established.
Three-dimensional physical models of sedimentary basins as a resource for teaching-learning of geology
Authors: Carneiro Celso Dal Ré , Santos Kauan Martins dos , Lopes Thiago Rivaben , Santos Filipe Constantino dos , Silva Jorge Vicente Lopes da , Harris Ana Lucia Nogueira de Camargo
Published: December 2018

Three-dimensional modeling connects several fields of knowledge, both basic and applied. 3D models are relevant in educa-tional research because the manipulation of 3D objects favors students' acquisition of spatial vision, but in the Geosciences, there are few didactic publications in Portuguese on the subject. The authors develop an educational research project to produce three-dimensional models of didactic examples of sedimentary basins: the Paraná Basin (Silurian-Upper Cretaceous), the Tau-baté and the São Paulo basins (Neogene). 3D-compatible files will be produced to compose didactic and display material, from maps and geological-structural profiles of certain regional stratigraphic levels of each basin. The research challenges are: (a) to obtain an overview of the available resources for 3D modeling; (b) to evaluate their potential, characteristics, advantages and limitations for applications in Geology and Geosciences; (c) to create computational models of the basins; (d) to produce at least one physical model based on one of the computational models of each basin. The resources will subsidize training work-shops for in-service teachers, technical-scientific articles and Internet pages.
The implementation of didactic collections and guidebooks in micropaleontology classes at the Geology Department of UFPE, Brazil
Authors: Pedrosa Flávia A. , Piovesan Enelise Katia , Melo Robbyson M. , Gomes Clarissa R. , Barros Cecília L.
Published: December 2018

The aim of paleontology is the understanding of the life history on Earth, its development and processes along the geologic time. Hence, it involves diversified fields, being the micropaleontology one of them, whose focus lies on taxonomy and appli-cations. The micropaleontology is, sometimes, poorly developed in an institution due to the scarcity of specialists. In order to fill this gap, a didactic collection was prepared to facilitate the divulgation of the micropaleontology in the university. Due to the necessity of increase in the knowledge on microfossils among graduate and undergraduate students, an extension project of mi-crofossils didactic collection was carried out at the Geology Department of the Universidade Federal de Pernambuco. For each fossil group (i.e. ostracods, foraminifers, calcareous nannofossils, charophytes, radiolarians, diatoms, conodonts, palyno-morphs, fish fragments, echinoid spines, sponge spicules and mollusks) micropaleontological slides were assembled. The origin of the material is varied, with specimens from several Brazilian sedimentary basins and even from other countries. The collections consist in numbered and identified slides, besides the material necessary for their manipulation, such as brushes and spare slides. In each fossil group, the specimens are organized according to the morphology, taxonomy and age. Each slide has instructions for classes inserted in a Guidebook of Micropaleontology thoroughly illustrated, with general characteristics of each fossil group and the respective methodology for sample preparation. The collection is intended to be used in practical classes, workshops and short-courses, with biological, petrographic and stereoscopic microscopes, for observation of the mor-phological structures, identification and solution of problems proposed in the guidebook. Besides the improvement in the pale-ontology teaching, these collections will also contribute to the qualification of the students as future professionals.
Educação para a geoconservação: reflexões da experiência no Parque Estadual da Serra do Mar (SP)
Authors: Mazzucato Eliana , Bacci Denise de La Corte , Santos Vânia Maria Nunes dos
Published: December 2018

O objetivo deste artigo é relatar e analisar a experiência de elaboração, planejamento, execução do curso intitulado “Estratégias de Geoconservação no Parque Estadual da Serra do Mar”, realizado nos núcleos Picinguaba e Caraguatatuba e em uma escola municipal de ensino fundamental de Ubatuba em 2016 e 2017. O curso consistiu em uma etapa de valorização e divulgação do patrimônio geológico e da geodiversidade local, baseado em inventários já realizados na área de estudo. A abordagem teve co-mo princípio a Aprendizagem Social para incentivar a Geoconservação nessa área. Sua construção esteve baseada no ensino de Geociências, na interpretação e divulgação da Geodiversidade, na valorização dos saberes e experiências dos atores locais e na participação desses atores nas propostas educativas para a conservação.
Effect of Good Hygiene Sanitation and Personal Hygiene Depot Management of Refill Drinking Water on the Quality of Drinking Water Reviewed from Most-Probable-Number Coliform in Kediri
Authors: Indasah Indasah
Published: December 2018

Drinking water is a basic human need and must meet health requirements. Drinking water depots are a means of filling drinking water which is in the process of processing raw water using treatment and sterilization system. Drinking water depots as providers of drinking water must also meet the requirements of sanitation hygiene and personal hygiene management must also be maintained so that the water produced meets health requirements. The purpose of this study was to determine the effect of sanitation hygiene and personal hygiene management of refill drinking water depots on the quality of drinking water in terms of the Most Probable Number Coliform in Kediri. The research design used was analytic observational with cross sectional approach. The population of all refill drinking water depots in Kediri is 57, with the sampling technique that is Simple Random Sampling, where a portion of refill drinking water depots in Kediri are 50. Data is collected by check list, questionnaire and laboratory examination. The results showed that most of the hygiene sanitation of the drinking water depot had fulfilled the requirements of 77%, the drinking water personal hygiene depot was good as much as 85% and those who met the drinking water requirements were 70%. The results of the hygiene feasibility analysis showed the value of Sig 0.000<0.05 (R=0.935) means that there was an effect of hygiene sanitation quality with water quality in terms of the Most Probable Number Coliform. While the personal hygiene value of Sig 0.001 <0.05 (R = 0.528) indicates that there is a personal hygiene influence with water quality in terms of the Most Probable Number Coliform. The results of Logistic Regression test showed that there were effects of sanitation hygiene and personal hygiene management of refill drinking water depots with water quality in terms of the Most Probable Number Coliform with a significance value = 0.000 <a 0.05. This shows that the hygiene and the better personal hygiene at refill drinking water depots is increasingly fulfilling water quality requirements in terms of the Most Probable Number Coliform
icaA/D Genes and Biofilm Formation of Methicillin-Resistant Staphylococcus aureus in Dr. Soetomo Hospital, Surabaya
Authors: Suryanditha Putu Arya , Rasita Yoeke Dewi , Debora Kartuti , Kuntaman K
Published: December 2018

Methicillin-resistant Staphylococcus aureus (MRSA) is a global health concern. One of the factors causing hospital infection is related to the ability of MRSA bacteria to form biofilms. Polysaccharide intercellular adhesin (PIA), encoded by ica gene, have an important role in S. aureus intracellular accumulation and aggregation. The aims of this study was to analyze the relationship between icaA, icaD genes and biofilm production in MRSA carrier and clinical isolate in Dr. Soetomo Hospital Surabaya. This study was an observational study using cross sectional approach. The sample was 47 MRSA isolates is as follow 28 isolates from carrier and 19 were clinical isolates. All of MRSA isolates carried mecA gene. PCR was performed to detect icaA and icaD genes. Biofilm formation was detected using microtiter plate assay (MTP). icaA gene was detected in all isolates whereas icaD gene in 96,4% carrier isolates and all (100%) of clinical isolates. Positive MTP results showed in all (100%) of carrier isolates and 57,9% of clinical isolates. Statistic result was significantly different in biofilm formation between carrier and clinical MRSA isolates. The proportion of positive biofilm formation in isolate with positive icaA/D genes was 82.6%. There was not any association between icaA and icaD gene with biofilm production.
The Effect of Time on Blood Types of ABO Systems on Saliva Spots of Cigarette Butts for Forensic Identification
Authors: Purnadianti Mely , MAR Mieke Sylvia , Yudianto Ahmad
Published: December 2018

The identification process is not only carried out on the body of a victim of a crime, but identification can also be carried out on the evidence evidence found at the crime scene. The timing of a crime case and the time interval for collecting evidence of a crime is an obstacle in the process of identifying blood saliva on cigarette butts. Saliva will dry within an hour and forty minutes at room temperature and with the influence of various other factors saliva will dry in less than three hours. The purpose of this study was to determine the effect of the duration of temperature exposure on the protein levels of cigarette saliva in order to help the identification process of forensic blood groups. The time series design was used in this study where 18 filter cigarette butts were collected from 6 individuals who were subjected to research with blood types A, B and AB then incubated 1.3 and 6 hours. Examination of protein content was carried out using trizol reagent with UV spectrophotometer reading. The data was processed using non-parametric T-test statistics. There was a decrease in salivary levels in a predetermined time of 1, 3 and 6 hours. Cigarette butt saliva protein levels can still be detected within 1, 3 and 6 hours so that they can be used to help identify the forensic blood group from cigarette butt saliva.
Prevalence of Insomnia and Its Association with Social Media Usage among University Students in Selangor, Malaysia, 2018
Authors: Abdalqader Mohammed A , Ariffin Indang Ariati , Ghazi Hasanain Faisal , AboBakr Mohammed Faez , Fadzil Mohd Ariff
Published: December 2018

Insomnia is an arising common health problem in Malaysia. There are many factors contributed to insomnia in young adults but very few are known. Increasing usage of social media may be one of the contributing factors to insomnia along its association with the sociodemographic factors. The objective of this study was to measure the prevalence of insomnia and to study its association with usage of social media and sociodemographic factors among university students. A cross-sectional based questionnaire was conducted among 445 students aged 18-30 years old in a private university in Selangor from July to August 2018. The questionnaire consisted of three parts to assess insomnia, social media usage and some socio-demographic factors. The age of the respondents ranged from 19 to 33 years old and the majority was relatable to insomnia (69%). The frequency of accessing social media was significantly associated with insomnia (p value=0.005). The time of the day of accessing social media mostly was significantly associated as well with insomnia, especially evening (p value=0.02), night time (p value=0.01) and before sleeping time (p value=0.04). The use of gadgets (phones/laptops/tablets) before sleeping at night also showed significant association with insomnia (p value=0.003). The sociodemographic factors (gender, age, race, income, relationship and living status) showed no significant association with insomnia. As a conclusion, the most influential factors that significantly associated to insomnia among students in a private university were the frequency of accessing social media, time of social media usage (the evening, night and before sleeping), and the usage of gadgets before sleeing on bed.
HUBUNGAN JENIS KELAMIN, GOSOK GIGI MALAM SEBELUM TIDUR DENGAN KEJADIAN KARIES DI MI AL - MUTMAINNAH
Authors: Mukhbitin Faihatul
Published: December 2018

AbstrakKaries gigi merupakan kebusukan yang terjadi pada gigi yang disebabkan oleh kuman dan bakteri. Penyebabnya adalah: kurang menjaga kebersihan mulut dan gigi, cara menggosok gigi dan penggunaan pasta gigi yang belum tepat, serta waktu menggosok gigi yang tidak tepat. Karies dapat dialami oleh anak ataupun orang dewasa tapi lebih sering dialami oleh anak, terutama saat anak berada di usia sekolah (6-12 tahun), karena pada usia tersebut gigi susu mulai tanggal dan gigi permanen pertama mulai tumbuh, sehingga dalam mulut terdapat gigi campuran. Gigi yang baru tumbuh tersebut belum matang sehingga rentan terhadap kerusakan padahal hanya tumbuh sekali seumur hidup, sehingga perlu perhatian dan perawatan khusus untuk mencegah karies.Penelitian ini bertujuan untuk mengetahui hubungan antara jenis kelamin, kebiasaan gosok gigi malam sebelum tidur dengan kejadian karies pada anak kelas 3 MI. Al-Mutmainnah yang terletak di Kelurahan Kedung Cowek Kecamatan Bulak Surabaya. Penelitian ini merupakan penelitian kuantitatif dengan menggunakan pendekatan cross sectional. Besar sampel dalam penelitian ini berjumlah 28 murid, sampel tersebut dihitung dengan menggunakan metode Slovin. Pengumpulan data dalam penelitian ini menggunakan data primer dan sekunder. Variabel bebas dalam penelitian ini terdiri dari jenis kelamin dan kebiasaan menggosok gigi sebelum tidur malam, sedangkan variabel terikat dalam penelitian ini adalah kejadian karies gigi. Data yang didapatkan dalam penelitian ini dianalisis menggunakan analisis Chi-square dengan tujuan untuk mengetahui ada tidaknya  hubungan antar variabel. Dalam penelitian didapatkan hasil bahwa ada hubungan antara jenis kelamin, kebiasaan gosok gigi sebelum tidur malam dengan kejadian karies, hal ini di buktikan dengan nilai ρ  0,019  dan  0,003. Kata kunci: Jenis Kelamin, Gosok Gigi Sebelum Tidur Dan Karies
Low-Field, Benchtop NMR Spectroscopy as a Potential Tool for Point-of-Care Diagnostics of Metabolic Conditions: Validation, Protocols and Computational Models
Authors: Percival Benita , Grootveld Martin , Gibson Miles , Osman Yasan , Molinari Marco , Jafari Fereshteh , Sahota Tarsem , Martin Mark , Casanova Federico , Mather Melissa , Edgar Mark , Masania Jinit , Wilson Philippe
Published: December 2018

Novel sensing technologies for liquid biopsies offer a promising prospect for the early detection of metabolic conditions through -omics techniques. Indeed, high-field NMR facilities are routinely used for metabolomics investigations on a range of biofluids in order to rapidly recognize unusual metabolic patterns in patients suffering from a range of diseases. However, these techniques are restricted by the prohibitively large size and cost of such facilities, suggesting a possible role for smaller, low-field NMR instruments in biofluid analysis. Herein we describe selected biomolecule validation on a low-field benchtop NMR spectrometer (60 MHz), and present an associated protocol for the analysis of biofluids on compact NMR instruments. We successfully detect common markers of diabetic control at low-to-medium concentrations through optimized experiments, including glucose (≤ 2.6 mmol./L) and acetone (25 μmol./L), and additionally in readily-accessible biofluids. We present a combined protocol for the analysis of these biofluids with low-field NMR spectrometers for metabolomics, and offer a perspective on the future of this technique appealing to point-of-care applications.