bluuebunny/crossref_metadata_2025 huggingface dataset:
Variasi Rajutan Bambu Petung Sebagai Pengganti Tulangan Baja Dari Kuat Lentur FS 4,7 MPA
Authors: Sefgan Surya , Rosyad Farlin
Published: November 2019

In this globalization era, almost all buildings use concrete with steel reinforcement as the main component of building frames. it is known that the basic material for steel is iron ore, and iron ore is a non-renewable natural resource, while its supply in nature is increasingly limited. Therefore, the price of steel reinforcement also increased. therefore, there needs to be an alternative replacement of steel reinforcement in concrete. Bamboo has a fairly high tensile strength, between 100-400 MPa, almost equal to the tensile strength of steel reinforcement equivalent to ½ to ¼ of the ultimate stress of steel reinforcement shows the same results and tensile strength of bamboo can reach 1280 kg / cm2. Bamboo is used as reinforcement in concrete with knitted shapes and patterns. In this research, the flexural strength test of 15 concrete blocks measuring 15 X 15 X 60 Cm was carried out when the concrete age was 28 days with 3 different variables. The results showed that bamboo reinforced concrete beams had an average maximum flexural strength value of 7.20 MPa. So that the use of petung bamboo reinforcement has a positive effect and deserves to be used as an alternative to steel reinforcement.
Метрологический подход в профессиональной подготовке спасателей
Authors: Rad'kov Igor' , Samsonik Andrey , Fed'kovich Vitaliy
Published: November 2019

Цель. Обоснование необходимости введения новых нормативов с контролем времени при выполнении приемов и упражнений по дисциплине «Работа с пожарно-техническим вооружением и аварийно-спасательным оборудованием».
Методы. Анализ специальной научно-методической литературы, сплошное статистическое наблюдение, анализ результатов исследования с использованием методов математической статистики.
Результаты. Проведен педагогический эксперимент по определению оптимального времени выполнения приемов и упражнений при работе с пожарно-техническим вооружением и аварийно-спасательным оборудованием. На основании эксперимента разработаны новые нормативы с контролем времени выполнения приемов и упражнений.
Область применения исследований. Результаты исследований могут быть использованы в образовательном процессе Университета гражданской защиты МЧС Беларуси при изучении дисциплины «Работа с пожарно-техническим вооружением и аварийно-спасательным оборудованием», а также в процессе профессиональной подготовки работников подразделений МЧС при проверке их кумулятивных знаний и умений.
Подготовка экспертизы алгоритма действий должностных лиц государственной системы предупреждения и ликвидации чрезвычайных ситуаций при аварии на Белорусской атомной электростанции
Authors: Khudoleev Aleksandr
Published: November 2019

Цель. Уточнить содержание подготовки экспертизы алгоритма действий должностных лиц государственной системы предупреждения и ликвидации чрезвычайных ситуаций при аварии на Белорусской атомной электростанции.
Методы. Анализ порядка организации экспертизы, особенностей функционирования системы предупреждения и ликвидации чрезвычайной ситуации на Белорусской атомной электростанции. Изучение существующих показателей алгоритма действий должностных лиц, участвующих в ликвидации чрезвычайных ситуаций.
Результаты. Уточнены показатели алгоритма действий должностных лиц государственной системы предупреждения и ликвидации чрезвычайных ситуаций при аварии на Белорусской атомной электростанции, подвергающиеся экспертной оценке. Сформулированы требования к экспертам, определены возможности применения полученных экспертных оценок.
Область применения исследований. Результаты исследований могут стать основой системы экспертной оценки алгоритма действий должностных лиц государственной системы предупреждения и ликвидации чрезвычайных ситуаций при аварии на Белорусской атомной электростанции.
Influencia de Finos de Perlitas para la Fabricación de Ladrillos y Bloques. Uso en Viviendas Sociales.
Authors: Burgos Lucas Ramiro , Oshiro Ángel , Sastre María Inés
Published: November 2019

En la localidad de San Antonio de los Cobres ሺSACሻ al oeste de la provincia de Salta, los habitantes recurren a la utilización de adobes para la construcción de sus viviendas. Estos mampuestos son elaborados por ellos mismos utilizando antiguas técnicas de construcción en donde el principal material es la arcilla. En la actualidad, dicho material en la zona resulta escaso frente a la creciente demanda. Por otro lado, en las proximidades al pueblo existen plantas mineras que extraen perlita generando desechos de partículas menores a los 150 micrones. Con un alto contenido de estos residuos se elaboraron ladrillos macizos crudos con la compactación de una máquina Cinva Ram. El objetivo de este trabajo es analizar la posibilidad de reemplazar los adobes por estos nuevos ladrillos a través de ensayos siguiendo las normas IRAM, de resistencia a la flexión y compresión, absorción, succión capilar y conductividad térmica, para comparar los tradicionales adobes en contra posición de los ladrillos de residuo de perlita cruda. Se concluye que los valores obtenidos tienen mejores características frente a los adobes, por ejemplo, una resistencia a la compresión de 3 MPa frente a los 1MPa que tienen los adobes.
Desarrollo Tecnológico de Paneles Multicapa a partir de Residuos Lignocelulósicos Bioligados con Micelio de Hongos.
Authors: Fernández Natalia , Gaggino Rosana , Kreiker Jerónimo , Positieri María Josefina
Published: November 2019

Esta tesis forma parte de la línea investigativa que propone el desarrollo decomponentes constructivos utilizando residuos, a partir de los desechos lignocelulósicos y el micelio de hongos para generar alternativas sustentables a productos utilizados actualmente en viviendas tales como paneles aislantes elaborados con poliestireno expandido o lana de vidrio, que hoy son fabricados y aglutinados con resinas sintéticas en base a derivados del petróleo. El micelioes el aparato vegetativo de los hongos cuya función es absorber de su entorno los nutrientes de los compuestos orgánicos que necesite para alimentarse y está constituido por filamentos pluricelulares denominados hifas.
Nanoarcillas Sintéticas para ser Empleadas en la Valorización de Glicerol a Carbonato de Glicerilo
Authors: Argüello Dalma Sofía , Crivello Mónica , Eimer Griselda , Bálsamo Nancy
Published: November 2019

El biodiesel se considera una alternativa verde para reducir las emisiones de carbono. Su producción está acompañada de un 10% en peso de glicerol como subproducto, por lo que resulta factible que pueda ser utilizado como materia prima renovable para favorecer económicamente el proceso. La conversión catalítica de glicerol hacia productos de mayor valor agregado, como el carbonato de glicerilo es una opción atractiva porque es una sustancia considerada como un sustituto verde de importantes compuestos derivados del petróleo como carbonato de etileno o carbonato de propileno. Además, presenta numerosas aplicaciones como disolvente polar de alto punto de ebullición, agente humectante para arcillas cosméticas y como disolvente para activos medicinales y productos de cuidado personal, etc. Una alternativa sustentable para producirlo es la transesterificación entre el glicerol y un alquil carbonato empleando catalizadores sólidos, en condiciones suaves de proceso. Dentro de los materiales asequibles para ser utilizados como catalizadores heterogéneos surgen los óxidos mixtos derivados de las nanoarcillas aniónicas sintéticas. Estos materiales presentan gran interés por la posibilidad de nano-diseño a medida, control de accesibilidad a sitios activos y muy bajo costo de síntesis. En este plan de tesis se sintetizarán arcillas aniónicas de Mg y Al, modificadas con Li, Cs, Ni, Zn, Cu, etc., con el fin de aumentar su actividad y selectividad para ser empleados en la valorización de glicerol para obtener carbonato de glicerilo, empleando procesos amigables con el medio ambiente.
Estudio de Aleaciones con Alto Contenido en Níquel Procesadas Mediante Manufactura Aditiva
Authors: Lerman Pedro Martín , Chapetti Mirco , Lucci Roberto
Published: November 2019

La manufactura aditiva es una técnica de fabricación en franca expansión. Naturalmente y como cualquier otro proceso productivo, su aplicabilidad posee ciertas limitaciones. Sin embargo, aún existen gaps de factibilidad que podrían ser superados como por ejemplo aquellos presentes en sectores productivos de alto volumen y bajos márgenes de rentabilidad. La presente investigación intenta generar un aporte incremental que permita expandir sus posibilidades de aplicación, especialmente cuando se consideran componentes de alta criticidad y exigencia termomecánica. Para ello, dos objetivos clave serán considerados, el desarrollo de un material de relación costoperformance superior a los ya existentes y la optimización en su productividad respecto al estado del arte. En esta publicación se detallan las actividades delineadas a fin de desarrollar los parámetros específicos de procesamiento de la aleación NCF 3015 mediante técnicas de manufactura aditiva del tipo “Fusión Selectiva por Láser” (SLM).
Síntesis de Materiales Catalíticos a partir de una Arcilla Natural para la Valorización de Alcoholes
Authors: Sabre Ema V. , Cánepa Analía L. , Casuscelli Sandra G.
Published: November 2019

Se plantea el estudio de la oxidación de alcoholes a los correspondientes compuestos carbonílicos mediante procesos catalíticos sustentables, empleando tecnologías que apunten a un bajo impacto ambiental, para evitar la generación de compuestos potencialmente contaminantes, optimizando la selección de reactivos y utilizando catalizadores heterogéneos. Para ello se utiliza una arcilla natural, de bajo costo debido a su abundancia en la naturaleza, como punto de partida para sintetizar materiales con buenas propiedades catalíticas. Así, mediante el proceso de pilareado las arcillas se transforman en sólidos con alta porosidad y superficie específica, denominándose PILC, las cuales pueden ser modificadas posteriormente con iones metálicos. Estos materiales permiten transformar diferentes compuestos químicos, como por ejemplo los alcoholes, de manera eficiente y selectiva en condiciones suaves, a aldehídos, epóxidos, etc. Estos productos pueden utilizarse como intermediarios en la industria de Química Fina en la obtención de productos farmacéuticos, colorantes, agroquímicos, aditivos plastificantes, resinas y fragancias.
Síntesis y Caracterización de Catalizadores Sólidos Ácido-alcalinos para la Producción de Biodiesel
Authors: Sánchez Faba Edgar M. , Eimer Griselda A. , Ferrero Gabriel O. , Dias Joana M.
Published: November 2019

Con el fin de producir biodiesel mediante catálisis heterogénea, se sintetizaron catalizadores sólidos de carácter básico y ácido, a base de sodio y cerio soportados sobre SBA-15. Los sólidos obtenidos se caracterizaron por difracción de rayos X a bajo y alto ángulo, método BET, desorción a temperatura programada de dióxido de carbono y análisis FT-IR con desorción de piridina. Posteriormente, se evaluó su actividad catalítica en la reacción de transesterificación de aceite de girasol comercial con metanol absoluto, en las siguientes condiciones: 10% p/p de catalizador (referida a la masa de aceite), relación molar metanol/aceite 40:1, 60 °C y 5 h. En dichas condiciones, tanto el soporte como el catalizador 20Ce/SBA-15 no fueron activos, mientras que se obtuvo casi un 98% p/p de biodiesel con el catalizador 5Na/20Ce/SBA-15. Finalmente, se estudió la reutilización de dicho catalizador, obteniendo una alta actividad (más de 90% p/p de biodiesel) en cuatro ciclos adicionales.
Etapa Inicial: “Asfaltos altamente modificados con polvo de NFU en mezclas asfálticas retardantes de la fisuración refleja”.
Authors: Segura Adrian , Botasso Gerardo , Raggiotti Belén
Published: November 2019

El deterioro prematuro de las capas retardantes de las fisuras reflejas, ocasiona reiteradas tareas de mantenimiento en las capas de rehabilitación colocadas sobre ellas, generando incrementos en los costos de conservación de los pavimentos. En búsqueda de mejorar esta situación, se han interpuesto geogrillas y geosintéticos en dichas capas, implicando mayores costos, que en algunos proyectos, puede resultar prohibitivo. Se genera así la necesidad de mejorar las capas arena – asfalto normalmente utilizadas en estas tareas, como una de las alternativas más competitivas. Es por ello que se plantea como hipótesis que las capas arena – asfalto con alto contenido de polvo de neumáticos fuera de uso (NFU) presentarán mejores características elásticas y resistencia a fatiga, en conjunto con la capa de rehabilitación colocada por encima, dando por resultado una mayor vida útil del sistema. Por esto el objetivo planteado es estudiar la respuesta bajo solicitación dinámica de mezclas asfálticas retardantes de la fisuración refleja elaboradas con asfaltos fuertemente modificado con polvo de NFU y su comparación con sistemas convencionales.
Eliminación de Contaminantes Orgánicos en Agua Empleando Nanomateriales Catalíticos Fotoactivos
Authors: Vinuesa Ariel José , Saux Clara , Renzini María Soledad
Published: November 2019

La producción de agentes químicos contaminantes provenientes de actividades industriales, agrícolas y domésticas, como también sus emisiones, son algunos de los problemas medioambientales que están ganando cada vez más relevancia. Debido al crecimiento demográfico y el consecuente aumento de la actividad antropogénica, los cursos de agua constituyen uno de los recursos naturales más perjudicados. Como consecuencia, el medio ambiente y la calidad de vida de los habitantes del entorno se ven gravemente afectados. Cabe destacar que en los últimos años se ha detectado la presencia de ciertos contaminantes, tales como fármacos o pesticidas, en bajas concentraciones aún en el agua tratada. A los mismos se los denomina .Contaminantes Emergentes puesto que su presencia ha sido detectada recientemente gracias al avance en las técnicas analíticas, pero cuyo consumo regular puede provocar serios problemas a la salud y al ambiente y que las tecnologías de purificación de aguas actualmente empleadas no son eficientes para su eliminación.En este contexto, los procesos de oxidación avanzada (POA) aparecen como una solución eficiente y complementaria a los procesos y tecnologías existentes. El presente plan de tesis tiene el objetivo de sintetizar y evaluar materiales microporosos, concretamente zeolitas sintéticas (Y, Beta y ZSM-5) y naturales, modificados con metales de transición (Fe, Zn, Sn, etc.) para ser usados en la eliminación fotocatalítica de contaminantes orgánicos presentes en los cursos de agua, tales como drogas farmacológicas (levamisol), pesticidas (glifosato) y colorantes industriales (naranja de metilo, alizarina, etc.).
Microencapsulación de Aceite de Pomelo por Gelificación Ionica y Extrusión
Authors: Cáceres Liliana Mariel , Chamorro Ester
Published: November 2019

La microencapsulación es definida como una tecnología de empaquetamiento, aplicada con éxito en la industria alimentaria, biotecnológica y farmacéutica. Se la utiliza como método de protección de principios activos sensibles a factores externos, como los aceites esenciales. De esta manera, estos compuestos pueden ser incorporados a distintos productos donde se lleva a cabo su liberación controlada. Se aprovecha así sus propiedades antimicrobianas, conservantes, saborizantes o aromatizantes, entre otras. En este trabajo se optimizó el proceso de microencapsulación del aceite esencial de pomelo con alginato de sodio por gelificación iónica externa acoplada a una extrusión. Se utilizó alginato de sodio al 1% p/v y carga de aceite esencial del 2% p/p. Se determinó el punto óptimo con concentración de cloruro de calcio del 10% p/v con tiempo de reticulación de 45 minutos. En estas condiciones la eficiencia media fue de 95,89±0,04%, y el rendimiento medio de 56,87±1,2%.
Avances en el Estudio Cinético de la Transesterificación de Aceite Crudo de Algodón
Authors: Sequeira Alfredo Fabian , Chamorro Ester , Aucar Gustavo
Published: November 2019

En el marco de la Tesis Doctoral denominada “Modelado computacional de la transesterificación de lípidos saponificables presentes en el aceite de semillas de algodón con catálisis homogénea” se presentan los datos relativos a la determinación del camino de reacción que tiene lugar en la transesterificación del aceite crudo de algodón utilizando herramientas computacionales.
Propuesta de Incorporación Temprana de Usabilidad en el Modelado Conceptual de Sistemas
Authors: Moreno Juan Carlos , Marciszack Marcelo Martín , Groppo Mario Alberto
Published: November 2019

La industria del software actual le exige a la Ingeniería de Sistemas el desarrollo de métodos para la construcción veloz, correcta y sobre todo de aplicaciones usables para los sistemas de información. En el presente trabajo, se presenta una propuesta metodológica que permite definir y mantener atributos de usabilidad, integrándolos al ciclo de vida de desarrollo del software. En etapas tempranas de desarrollo del software, los atributos de usabilidad sonidentificados, partiendo del Modelado de Procesos de Negocios. Luego se realiza un conjunto de diferentes transformaciones para integrarlos a una estructura denominada “Requirements Baseline”, que emplea el léxico extendido del lenguaje (LEL) y escenarios, donde se permite definir métricas de evaluación de los atributos y la relación que existe entre los diferentes atributos y subatributos, tomando como fundamento la estructura conceptual propuesta por la norma ISO/IEC 25000 (SQUARE). Los subatributos permitirán definir métricas que se emplean posteriormente para evaluar distintos criterios de usabilidad relacionados con la calidad del producto. Además, permite incorporar nuevas especificaciones de usabilidad y sus correspondientes métricas de evaluación en forma integrada al proceso de desarrollo de software, lo que le otorga cierto grado de trazabilidad a todo el proceso.
Detección Automática de Similitudes de Código Fuente Utilizando Técnicas de Aprendizaje Automático
Authors: Cardenas Marina Elizabeth , Castillo Julio Javier
Published: November 2019

En la presente propuesta de tesis se plantea el desarrollo de un modelo para detección de similitudes de código fuente para poder determinar la existencia de prácticas de reutilización aplicando técnicas vinculadas a la lingüística computacional, tales como minería de datos sobre texto y procesamiento del lenguaje natural. La identificación de similitudes de código puede servir para varios propósitos, entre los que se puede mencionar el estudio de la evolución del código fuente de un proyecto, detección de prácticas de reutilización, extracción de un fragmento de código para “refactorización” del mismo, seguimiento de defectos para su corrección, entre otros.
Describing area and yield for small-scale plantation forests in Wairarapa region of New Zealand using RapidEye and LiDAR
Authors: Xu Cong , Manley Bruce , Morgenroth Justin
Published: November 2019

Background: New Zealand does not have a national forest inventory based on ground measurements. The National Exotic Forest Description (NEFD) is based on surveys of forest owners but lacks reliability in describing area and yield for small-scale forests, given that over half of the small-scale forests were not included in the direct NEFD survey. This has led to an insufficient understanding of the wood supply from these forests, which will raise problems as the majority of the small-scale forests are approaching maturity and are anticipated to contribute more than 40% of wood supply in the next decade. Therefore, having accurate estimation of this resources is critical for marketing, harvesting and logistic planning. Furthermore, the current NEFD does not incorporate a spatial representation. The aim of this study was to test the utility of remote sensing dataset for providing information on the area and yield of small-scale forest resources through a case study in the Wairarapa region of New Zealand.

Methods: Classification and regression tree analysis was applied to both RapidEye and LiDAR datasets to map the net stocked area of small-scale plantation forests in Wairarapa. Results were compared against forest areas that have been determined from manual digitisation. For each forest, stand variables mean top height, basal area, volume and stand age were estimated using LiDAR-derived metrics. This allowed the development of maps for these stand variables.

Results: The automatically mapped plantation area was 4.2% (1?614 ha) less than the reference area (i.e. manually digitised plantation area), together with manually digitised young plantations which were not detected from automated approach, the area differed only by -0.6% (235 ha) from the reference area. The yield tables developed using modelled stand variables were all within a realistic range and were comparable to wood availability forecast (WAF) yield tables, producing on average 27 m3 ha-1 less than the WAF yield.

Conclusions: The mapping approach produced comparable results to the area calculated using manual digitisation. However, this approach struggles to detect young plantings due to the resolution of the remote sensing datasets used; hence manual digitisation is required to map the young plantations that were within 3–5 years of planting. This study also confirmed that the remote sensing approach could be used to describe forest yield, although the approach failed to predict the full range of ages of the mapped forest resource. The estimation of plantation age could be improved by including plot data with a wider range of stand ages or investigating different models for age estimation. It is also possible to review time-series satellite imagery to detect establishment periods for the forests.
Important Role of Mitochondria and the Effect of Mood Stabilizers on Mitochondrial Function
Authors: ĽUPTÁK M. , HROUDOVÁ J.
Published: November 2019

Mitochondria primarily serve as source of cellular energy through the Krebs cycle and β-oxidation to generate substrates for oxidative phosphorylation. Redox reactions are used to transfer electrons through a gradient to their final acceptor, oxygen, and to pump hydrogen protons into the intermembrane space. Then, ATP synthase uses the electrochemical gradient to generate adenosine triphosphate (ATP). During these processes, reactive oxygen species (ROS) are generated. ROS are highly reactive molecules with important physiological functions in cellular signaling. Mitochondria play a crucial role in intracellular calcium homeostasis and serve as transient calcium stores. High levels of both, ROS and free cytosolic calcium, can damage mitochondrial and cellular structures and trigger apoptosis. Impaired mitochondrial function has been described in many psychiatric diseases, including mood disorders, in terms of lowered mitochondrial membrane potential, suppressed ATP formation, imbalanced Ca2+ levels and increased ROS levels. In vitro models have indicated that mood stabilizers affect mitochondrial respiratory chain complexes, ROS production, ATP formation, Ca2+ buffering and the antioxidant system. Most studies support the hypothesis that mitochondrial dysfunction is a primary feature of mood disorders. The precise mechanism of action of mood stabilizers remains unknown, but new mitochondrial targets have been proposed for use as mood stabilizers and mitochondrial biomarkers in the evaluation of therapy effectiveness.
Determinan Profitabilitas Bank Perkreditan Rakyat di Kota Palembang Periode 2013-2018
Authors: Hanifa Riri , Trianto Anton , Hendrich Mahdi
Published: November 2019

This study was conducted with the aim to empirically examine the effect of CAR, NPL, BOPO and LDR on profitability (ROA) at the Rural Credit Bank in Palembang for the period 2013-2018. The type of this research is descriptive quantitative The population in the research object is all BPRs contained in Palembang city amounted to 13 BPR while the total sample of 10 BPR. The research sample was taken with a purposive sampling system with the criteria of a BPR whose financial statements were published by the Financial Services Authority in the 2013-2018 period. The method used in this study uses multiple regression analysis with a hypothesis testing tool that is the t test and the F test. However, before conducting multiple regression analysis, the classical assumption test is performed first. Through the simultaneous hypothesis test results (Test F) it is known that CAR, BOPO, NPL and LDR have a significant effect on the profitability of BPR (sig 0,000). While based on the partial hypothesis test results (t test) on BPR shows that CAR variable does not influence ROA (sig 0.183), BOPO variable has no effect on ROA (sig 0.114), NPL variable has significant effect on ROA (sig 0.001) and LDR variable also no effect on ROA (sig 0,782). Adjusted R ² value in the regression model was obtained at 56.1, this indicates that the influence of independent variables on the dependent variable (ROA) was 56.1% while the remaining 43.9% was influenced by other factors outside this study.
ESTIMATION OF ORGANIC AND INORGANIC IMPURITY SEDIMENTS IN THE ENVIRONS OF CEMENT PLANT
Authors: Morozov Sergey , Raputa Vladimir , Kokovkin Vasily
Published: November 2019

The results of field and chemical analytical studies of snowpack contaminated by organic and inorganic impurities in the environ of cement plant in the winter season of 2016/17 are discussed. On the basis of numerical reconstruction of sedimentation fields, the existence of stable quantitative regularities of organic and inorganic impurity distribution in snow cover around the source is shown. The total deposition of dust quantity was reconstructed, and the pollution into the atmosphere within the considered winter season was estimated.
SUMMER SCENARIO OF MODELING DISPERTION OF IMPURITIES FROM EMISSIONS SOURCES IN THE CENTRAL ENVIRONMENTAL ZONE OF THE BAIKAL NATURAL TERRITORY
Authors: Pyanova Elza , Penenko Vladimir , Faleychik Larisa
Published: November 2019

The wind in the lower layers of the atmosphere is a direct distributor of pollutants from small and medium energy facilities located near the waters of Lake Baikal. To assess the effect of various meteorological situations on the processes of impurity transport to the water area, a mesoscale model of atmospheric dynamics and impurity transport is used, which is being developed in ICM & MG SB RAS. The results of numerical modeling of local circulations in the Baikal region in the summer period are presented. The spatial and temporal variability of wind flow and the dynamics of the distribution of impurities in the model scenario are shown.
THE ANALYSIS OF POLLUTION PROCESSES IN A SMALL URBAN RIVER
Authors: Raputa Vladimir , Zinoviev Alexander , Lovtskaya Olga
Published: November 2019

The spatial analysis of experimental data on pollution of small rivers flowing through the city of Barnaul was performed. Some quantitative relationships be-tween nitrate and nitrite concentrations in observation sites were established. The dilution ratio was estimated based on the relation of impurity mass balance in the water.
SPATIAL-TEMPORAL ANALYSIS OF SEISMIC WAVE-FIELD FROM THE DISTRIBUTED MINING EXPLOSION
Authors: Efimov Sergey
Published: November 2019

The article presents a space-time analysis of the seismic wave from a distributed career explosion. The method of direct measurement based on the dynamic model of the wave field is used to form an image of the seismic wave field in the field of quarry explosions. The efficiency of the proposed method is shown by the example of experimental seismic recording processing. The program "Nelumbo" is used to visualize the seismic field, which on the basis of experimental seismic records allows to form an image of the wave field in the space of the hemisphere, the center of which corresponds to the position of the seismometer (registration point). The algorithm of the program "Nelumbo" is based on the Huygens – Fresnel principle and Kirchhoff's theorem. The algorithm of the program allows to allocate from record of a seismic signal frames of a certain duration and to form the image of a wave field in space of a solid angle dimension π. This approach can be used as a tool to analyze the nature of the development of disturbances in the environment and the analysis of environmental risks in the production of blasting.
GROUP PROPERTIES OF A ONE-DIMENSIONAL NONLINEAR POROELASTICITY EQUATION
Authors: Imomnazarov Kholmatzhon , Yusupov Ravshanbek , Iskandarov Ilham
Published: November 2019

This paper studies a class of partial differential equations of second order , with arbitrary functions and , with the help of the group classification. The main Lie algebra of infinitely infinitesimal symmetries is three-dimensional. We use the method of preliminary group classification for obtaining the classifications of these equations for a one-dimensional extension of the main Lie algebra.
A THERMODYNAMICALLY CONSISTENT MODEL OF A SOLVENT SUBSTANCE TRANSPORT IN A POROELASTIC CLAY SHALE
Authors: Imomnazarov Bunyod , Korobov Petr , Khaydarov Ilkhom
Published: November 2019

In this paper, we discuss a chemically inert elastically deformable rock with allowance for only changes in the stress and the pore pressure: the chemistry of a porous fluid does not directly affect deformation [1]. In such a situation, chemical effects affect a change in the pore pressure and in the rock deformation. This theory has been applied for mathematical modeling of the solvent and solute transport through a semi-permeable shale.
TEMPERATURE ANOMALIES ON THE TERRITORY OF BARABINSKAYA LOWLAND. THE FIRST RESULTS
Authors: Voronina Polina , Chubarov Dmitri , Dobretsov Nikolay
Published: November 2019

We present the results of the development of RST (Robust Satellite Technique) method to detect statistical deviations in spatial-time series of satellite land surface temperature data under the Baraba.
APPLICATION OF REGRESSION ANALYSIS FOR CALCULATIONS UNDER DATA OF IKFS-2 AND MTVZA DEVICES OF METEOR-2 SATELLITES
Authors: Pyatkin Feodor , Golomolzin Vladimir , Kostornaya Angelica
Published: November 2019

This article examines a multiple regression method to calculate the characteristics of the at-mosphere with hyper spectral sensors data of “Meteor-2” satellite. The method was used to calculate the carbon dioxide concentration by infrared Fourier-spectrometer IKFS-2 and the integral content of water vapor of atmosphere for the microwave sensor MTVZA-GY.
Analysis of the obtained results and calculation errors showed the possibility of using this method to restore the values of atmospheric parameters. The proposed method could be applied to for various sensors and it allows to expand the capabilities of other methods.
MODEL OF ESTIMATION OF PARAMETERS OF THE LOWER ATMOSPHERE BASED ON SATELLITE IMAGES AND GROUND-BASED
Authors: Lezhenin Anatoly , Yaroslavtseva Tatyana , Raputa Vladimir
Published: November 2019

A method of calculation of wind profiles and coefficients of vertical turbulent exchange in the lower atmosphere is presented. The method is based on meteorological observations and satellite images of smoke plumes from high altitude chimneys of industrial plants. The method is used
in a model of estimation based on solutions of the equations of the Ekman's a boundary layer. An analysis of distribution of the smoke plume of a power plant is given for the city of Barnaul. The results of calculations of wind velocity components in the boundary layer of the atmosphere are presented. A possibility of using this approach for urban air pollution research is shown.
THE CALCULATION OF RELATIVE POLLUTIONS CONCENTRATIONS IN THE ATMOSPHERE ON BASE THE MEASUREMENTS OF THERMAL RADIATION SOURCES
Authors: Raputa Vladimir , Alekseeva Maria , Yaroslavtseva Tatyana
Published: November 2019

With the use of satellite images of the winter period, operating oil and gas plumes were installed in the western part of the Tomsk Region. An assessment of their thermal impact on the surrounding area has been carried out. A model has been developed for estimating the fields of impurity concentrations in the atmospheric boundary layer from a set of sources. With its use and thermal torch measurement data, model estimates of the regional-scale fields of relative pollution in the summer and winter periods of time have been carried out.
ABOUT PARAMETRIZATION OF SELECTION OF SIGNIFICANT CLUSTERS
Authors: Kim Pavel
Published: November 2019

One of the fundamental tasks of cluster analysis is the partitioning of multidimensional data samples into groups of clusters – objects, which are closed in the sense of some given measure of similarity. In a some of problems, the number of clusters is set a priori, but more often it is required to determine them in the course of solving clustering. With a large number of clusters, especially if the data is “noisy,” the task becomes difficult for analyzing by experts, so it is artificially reduces the number of consideration clusters. The formal means of merging the “neighboring” clusters are considered, creating the basis for parameterizing the number of significant clusters in the “natural” clustering model [1].
MODELING OF PENETRATING TURBULENT CONVECTION AND SCATTERING OF POLLUTION IN A THERMALLY SUSTAINABLE STRATIFIED ENVIRONMENT
Authors: Kurbatskaya Lyudmila
Published: November 2019

The urban-heat-island phenomenon and its associated circulation, driven by the energy generated by anthropogenic sources are found to be most intense at nighttime under clear skies and weak ambient wind. A thermal plume is generated by an underlying heat island in the form of an area source. The fundamental characteristics of most concern for a nocturnal heat island are its mixing height, intensity, temperature and turbulent kinetic energy distributions, and heat-island-induced circulation. To model the urban-heat-island structure it is necessary to describe correctly the turbulent penetrative convection in the case of near-calm conditions when the ambient wind speed approaches zero and the turbulent motion at the urban center is dominated by the thermal buoyancy force. In most existent mathematical models the turbulence of an urban-heat-island is parameterized. The principal aim of this investigation is the development of turbulent transport model for the simulation of turbulent urban-heat-island structure and pollutant dispersion in the stably stratified environment. The four-parametric turbulent model describing an evolution of fully turbulent low-aspect-ratio buoyant plume with no initial momentum and dispersion of contaminant from a ground-level source under calm and stable stratified conditions is formulated and evaluated.
Thermotolerance and Physiological Traits as Fast Tools to Heat Tolerance Selection in Experimental Sugarcane Genotypes
Authors: Castro-Nava Sergio , López-Rubio Enrique
Published: November 2019

Heat stress limits the growth, development, and yield of crop plants when it occurs during short or long periods of time. An experiment was conducted with the objectives of (i) evaluating the cell membrane thermostability (CMT) as an indicator of heat tolerance in sugarcane and to determine its relationship with physiological parameters under heat-stressed conditions, and (ii) evaluating the utility of CMT for selecting heat-tolerant genotypes in a breeding program. A total of nine elite experimental, and four commercial sugarcane genotypes were evaluated for CMT, and the results are expressed as relative cell injury (RCI). Six genotypes were classified as highly tolerant and seven as highly sensitive. We concluded that the use of RCI, as an indicator of CMT in sugarcane genotypes, is a suitable useful parameter for selecting the genotypes tolerant to heat stress in a breeding program. This procedure, combined with other characters, helps to identify sugarcane plants with the ability to maintain a high yield photosynthetic rate under stressful field conditions. Furthermore, it offers an opportunity to improve selection efficiency over that of field testing, since high temperature stresses do not occur consistently under field conditions.
Biomass and Phosphorus Accumulation and Partitioning of Geranium and Coleus in Response to Phosphorus Availability and Growth Phase
Authors: Zhang Jiayin , Choi Seunghyun , Fan Jingping , Kim Hye-Ji
Published: November 2019

This study was conducted to examine plant biomass and phosphorus (P) accumulation and partitioning in response P availability and to determine the optimal P concentration during growth phases of two plant species with contrasting growth characteristics: geranium (Pelargonium × hortorum Bailey) “Bullseye Scarlet”, a flowering plant, and coleus (Solenostemon scutellarioides (L.) Codd) “Chocolate Mint”, a foliage plant. Plants were grown in inert media (1:1 mixture of perlite and vermiculite) with complete nutrient solutions containing a range of P concentrations considered low (3 and 5 mg/L), intermediate (10 and 15 mg/L), and high (20 and 30 mg/L). Higher P rates logarithmically increased shoot and root dry mass of geranium and coleus plants regardless of the growth phase, but linearly enhanced flower dry mass of reproductive geranium plants resulting from the accelerated flower development. During the vegetative phase, the intermediate-P increased the shoot biomass production of geranium plants, but high-P was more effective for coleus plants. During the reproductive phase, however, the intermediate-P increased shoot biomass production of both geranium and coleus plants to the level achieved by high-P. The change from vegetative to reproductive phase increased the relative biomass to flowers, roots, and shoots of reproductive geranium plants and roots and shoots of reproductive coleus plants in decreasing orders, resulting in an increased root-to-shoot ratio. The P content of all plant parts showed a logarithmical increase with higher P rates for reproductive geranium plants but a linear increase for reproductive coleus plants. During the reproductive phase, a higher proportion of acquired P was allocated to flowers of low-P geranium plants than the roots of high-P coleus. Our results demonstrate that geranium plants require intermediate-P throughout the growth phases, while coleus plants require high-P during the vegetative phase and intermediate-P during the reproductive phase. P-use efficiency (PUE) ranged from 5 to 15% in high-P, which was improved with intermediate-P by 36 to 70%. To further improve PUE, the application method also needs to be taken into consideration such that the fertigation volume is reduced during the vegetative phase and increased before the reproductive phase.
UPLC-MS-ESI-QTOF Analysis and Antifungal Activity of the Spondias tuberosa Arruda Leaf and Root Hydroalcoholic Extracts
Authors: Thassya Lucas dos Santos Antonia , Pereira Carneiro Joara Nályda , Pereira da Cruz Rafael , Lima Sales Débora , Cosmo Andrade Jacqueline , de Oliveira Almeida Waltécio , Martins da Costa José Galberto , Riceli Vasconcelos Ribeiro Paulo , Sousa de Brito Edy , Alves Batista Francisco Lucas , Alves Magalhães Francisco Ernani , Iriti Marcello , Morais-Braga Maria Flaviana Bezerra , Coutinho Henrique Douglas Melo
Published: November 2019

The aim of this study was to identify and evaluate the chemical compositions and effects of the S. tuberosa leaf and root hydroalcoholic extracts (HELST and HERST) against different strains of Candida. Chemical analysis was performed by Ultra-Performance Liquid Chromatography Coupled to Quadrupole/Time of Flight System (UPLC-MS-ESI-QTOF). The Inhibitory Concentration of 50% of the growth (IC50) as well as the intrinsic and combined action of the extracts with the antifungal fluconazole (FCZ) were determined by the microdilution method while the minimum fungicidal concentrations (MFCs) and the effect on fungal morphological transitions were analyzed by subculture and in humid chambers, respectively. From the preliminary phytochemical analysis, the phenols and flavonoids were the most abundant. The intrinsic IC50 values for HELST ranged from 5716.3 to 7805.8 µg/mL and from 6175.4 to 51070.9 µg/mL for the HERST, whereas the combination of the extracts with fluconazole presented IC50 values from 2.65 to 278.41 µg/mL. The MFC of the extracts, individually, for all the tested strains was ≥16384 µg/mL. When fluconazole was combined with each extract, the MFC against CA URM 5974 was reduced (HELST: 2048 and HERST: 4096 µg/mL). Synergism was observed against standard C. albicans (CA) and C. tropicalis (CT) strains and with the root extract against the CT isolate. The leaf extract inhibited the morphological transition of all strains while the root extract inhibited only CT strains.
Flexible-Link Multibody System Eigenvalue Analysis Parameterized with Respect to Rigid-Body Motion
Authors: Palomba Ilaria , Vidoni Renato
Published: November 2019

The dynamics of flexible multibody systems (FMBSs) is governed by ordinary differential equations or differential-algebraic equations, depending on the modeling approach chosen. In both the cases, the resulting models are highly nonlinear. Thus, they are not directly suitable for the application of the modal analysis and the development of modal models, which are very useful for several advanced engineering techniques (e.g., motion planning, control, and stability analysis of flexible multibody systems). To define and solve an eigenvalue problem for FMBSs, the system dynamics has to be linearized about a selected configuration. However, as modal parameters vary nonlinearly with the system configuration, they should be recomputed for each change of the operating point. This procedure is computationally demanding. Additionally, it does not provide any numerical or analytical correlation between the eigenpairs computed in the different operating points. This paper discusses a parametric modal analysis approach for FMBSs, which allows to derive an analytical polynomial expression for the eigenpairs as function of the system configuration, by solving a single eigenvalue problem and using only matrix operations. The availability of a similar modal model, which explicitly depends on the system configuration, can be very helpful for, e.g., model-based motion planning and control strategies towards to zero residual vibration employing the system modal characteristics. Moreover, it allows for an easy sensitivity analysis of modal characteristics to parameter uncertainties. After the theoretical development, the method is applied and validated on a flexible multibody system, specifically using the Equivalent Rigid Link System dynamic formulation. Finally, numerical results are presented and discussed.
Antiplatelet Versus Anticoagulation for Asymptomatic Patients with Vertebral Artery Injury During Anterior Cervical Surgery—Two Case Reports and Review of Literature
Authors: Hall Michael , Cheng David , Cheng Wayne , Danisa Olumide
Published: November 2019

Vertebral Artery Injury (VAI) while performing cervical spinal reconstruction surgery is rare, but it can lead to catastrophic events. Treatment for this injury with regard to antiplatelet versus anticoagulation therapy is controversial. The purpose of this report is to discuss two cases of VAI that occurred during the performance of cervical reconstruction surgery and provide a guideline based on a literature review about whether to use anticoagulant or antiplatelet therapy for treatment of asymptomatic VAI. In case 1, iatrogenic injury occurred to the left C5 vertebral artery (VA) during high speed burr removal of an osteophyte on the left C5/6 uncovertebral joint, resulting in VAI. This patient was treated with Heparin resulting in respiratory complication. Case 2 encountered VAI while using the kerrison rongeur to perform a right sided C5/6 foraminotomy. Antiplatelet therapy was administered. Fourteen publications relevant to Antiplatelet versus Anticoagulation treatment were reviewed. Anticoagulation has similar results to antiplatelet therapy. Studies are limited; there were no common guidelines or parameters concerning the utilization of Antiplatelets versus Anticoagulants. Anticoagulation achieved similar results as Antiplatelet therapy; based on the limited relevant data, the superiority of one treatment over the other cannot be concluded in VAI after cervical spinal reconstruction surgery.
Mathematical Model Explaining the Role of CDC6 in the Diauxic Growth of CDK1 Activity during the M-Phase of the Cell Cycle
Authors: Dębowski Mateusz , Szymańska Zuzanna , Kubiak Jacek Z. , Lachowicz Mirosław
Published: November 2019

In this paper we propose a role for the CDC 6 protein in the entry of cells into mitosis. This has not been considered in the literature so far. Recent experiments suggest that CDC 6 , upon entry into mitosis, inhibits the appearance of active CDK 1 and cyclin B complexes. This paper proposes a mathematical model which incorporates the dynamics of kinase CDK 1 , its regulatory protein cyclin B, the regulatory phosphatase CDC 25 and the inhibitor CDC 6 known to be involved in the regulation of active CDK 1 and cyclin B complexes. The experimental data lead us to formulate a new hypothesis that CDC 6 slows down the activation of inactive complexes of CDK 1 and cyclin B upon mitotic entry. Our mathematical model, based on mass action kinetics, provides a possible explanation for the experimental data. We claim that the dynamics of active complexes CDK 1 and cyclin B have a similar nature to diauxic dynamics introduced by Monod in 1949. In mathematical terms we state it as the existence of more than one inflection point of the curve defining the dynamics of the complexes.
Slope Entropy: A New Time Series Complexity Estimator Based on Both Symbolic Patterns and Amplitude Information
Authors: Cuesta-Frau David
Published: November 2019

The development of new measures and algorithms to quantify the entropy or related concepts of a data series is a continuous effort that has brought many innovations in this regard in recent years. The ultimate goal is usually to find new methods with a higher discriminating power, more efficient, more robust to noise and artifacts, less dependent on parameters or configurations, or any other possibly desirable feature. Among all these methods, Permutation Entropy (PE) is a complexity estimator for a time series that stands out due to its many strengths, with very few weaknesses. One of these weaknesses is the PE’s disregarding of time series amplitude information. Some PE algorithm modifications have been proposed in order to introduce such information into the calculations. We propose in this paper a new method, Slope Entropy (SlopEn), that also addresses this flaw but in a different way, keeping the symbolic representation of subsequences using a novel encoding method based on the slope generated by two consecutive data samples. By means of a thorough and extensive set of comparative experiments with PE and Sample Entropy (SampEn), we demonstrate that SlopEn is a very promising method with clearly a better time series classification performance than those previous methods.
A Modularized Architecture of Multi-Branch Convolutional Neural Network for Image Captioning
Authors: He Shan , Lu Yuanyao
Published: November 2019

Image captioning is a comprehensive task in computer vision (CV) and natural language processing (NLP). It can complete conversion from image to text, that is, the algorithm automatically generates corresponding descriptive text according to the input image. In this paper, we present an end-to-end model that takes deep convolutional neural network (CNN) as the encoder and recurrent neural network (RNN) as the decoder. In order to get better image captioning extraction, we propose a highly modularized multi-branch CNN, which could increase accuracy while maintaining the number of hyper-parameters unchanged. This strategy provides a simply designed network consists of parallel sub-modules of the same structure. While traditional CNN goes deeper and wider to increase accuracy, our proposed method is more effective with a simple design, which is easier to optimize for practical application. Experiments are conducted on Flickr8k, Flickr30k and MSCOCO entities. Results demonstrate that our method achieves state of the art performances in terms of caption quality.