bluuebunny/crossref_metadata_2025 huggingface dataset:
Celso Furtado, política e planejamento econômico: revisitando a luta para a superação do subdesenvolvimento do Nordeste
Authors: Feitosa Hortencio Victor Emmanuel , Milani Ana Maria Rita
Published: September 2019

O presente trabalho procura fazer uma reflexão teórica do pensamento de Celso Furtado, usando sua obra como referência para entender a problemática da questão regional nordestina. O estudo envolve fundamentalmente a pesquisa bibliográfica em obras essenciais do autor, como também, a coleta de dados socioeconômicos. Descreve a formação econômica do Nordeste e a tentativa de Furtado em transformar a realidade subdesenvolvida da região, aliando planejamento econômico com políticas públicas através da SUDENE.Tendo como objetivo geral elucidar a problemática do Nordeste subdesenvolvido através de três objetivos específicos: 1) o sentido de desenvolvimento e subdesenvolvimento na obra de Celso Furtado; 2) derivar da abordagem mais geral, por meio do método estruturalista, a questão do atraso nordestino; e 3) descrever a tentativa de Furtado de transformar a realidade subdesenvolvida do Nordeste.
A luta dos catadores de materiais recicláveis de Alagoas
Authors: De Barros Emanuel Lucas
Published: September 2019

Este trabalho trata da organização coletiva dos catadores de materiais recicláveis de Alagoas. Categorias basilares acerca do desenvolvimento econômico, ecologia popular e economia solidária foram utilizadas a fim de elucidar o objeto de estudo. Como fonte de pesquisa foi consultada as informações disponibilizadas pela Secretaria de Estado do Meio Ambiente e Recursos Hídricos e a pesquisa empírica realizada com os grupos de catadores de recicláveis durante o Encontro Estadual em 2016. Foram identificados 14 empreendimentos de catadores em 11 municípios de Alagoas.
Resenha – o reencontro com Kerala
Authors: Gomes Fábio Guedes
Published: September 2019

Resenha sobre o reencontro com Kerala
Los guardiamarinas Jorge Juan y Antonio de Ulloa en la medición del arco del meridiano en el Ecuador
Authors: Blanco Núñez José María
Published: September 2019

En conmemoración del tricentenario del nacimiento de Jorge Juan y Santacilia, el presente artículo se repasa actuación de los eminentes marinos y científicos españoles Jorge Juan y Antonio Ulloa durante la expedición geodésica franco-española para la medición del arco del meridiano terrestre realizada en el siglo XVIII en la antigua presidencia de Quito.

En el presente artículo se hace destacar la importante labor que ambos marinos españoles realizaron en la misma expedición, las circunstancias en las que esta se desarrolló y los azares por los cuales pasaron antes de volver a sanos y salvos a la Corte de Madrid 11 años después de haber comenzado su odisea.
…Y la bobería se extiende a la señora del pacífico: Guayaquil en el camino a la independencia
Authors: Guerra Moscoso Sabrina
Published: September 2019

Los siguientes siete artículos son el resultado de la celebración de “Las Jornadas de Estudio Conmemorativas del Bicentenario de la Constitución de Cádiz” que se realizaron en la ciudad de Quito en octubre de 2013. El resultado aquí presentado ha profundizado en el estudio de las circunstancias que rodearon la promulgación de la Constitución liberal española de 1812, con todo el significado y consecuencias que tuvo para la América española.

Se ha realizado un estudio exhaustivo de la situación  en la antigua Audiencia de Quito. Se ha analizado los aspectos políticos, sociales, económicos y regionales que se desarrollaron en el primer cuarto del siglo XIX y que tanto influyeron en el desarrollo del Ecuador moderno.
Estudio de navegabilidad del río Bobonaza desde Canelos (Puerto Latasas) hasta Sarayacu – primera etapa
Authors: Coronel Mónica , Usiña Jhon
Published: September 2019

El estudio está orientado a analizar las condiciones de navegabilidad del río Bobonaza, el cual servirá de base para investigaciones futuras sobre la navegabilidad de los ríos de la Amazonía, ya que en el país no existen estudios similares y por lo tanto, el presente trabajo constituye un gran aporte a los objetivos de desarrollo nacional y principalmente permite orientar el apoyo a las comunidades asentadas a lo largo de las riberas del río Bobonaza, entendiendo que el transporte fluvial es un servicio fundamental para despuntar el desarrollo local y regional. Como investigaciones de soporte fueron necesarios los estudios correspondientes a las áreas social, económica y ambiental; información que permite conocer los parámetros más incidentes en la navegabilidad del río Bobonaza, pues exponen la realidad en la que viven y las diferentes necesidades de los habitantes de la zona de influencia, respecto fundamentalmente a movilidad, condiciones de ocupación, empleo, escolaridad, nivel de pobreza, patrimonio natural, entre otras.
Miguel-Ángel Zapata y el espacio interior de la poesía
Authors: Perez Rolando
Published: September 2019

El autor, en este ensayo encuentra vínculos epistemológicos entre la poesía del poeta peruano Miguel Ángel Zapata y la filosofía de René Descartes, específicamente con sus: “Meditaciones acerca de la filosofía”.

Además reflexiona sobre los borrosos límites entre soñar y percibir.
La amistad de Pablo Neruda con salvador allende: un capítulo en la historia político-social de América Latina
Authors: Quezada Vergara Abraham
Published: September 2019

El presente artículo trata sobre dos personajes centrales en la historia contemporánea de Chile y su relación tanto de amistad como política. Se trata de Salvador Allende y Pablo Neruda, quienes forjaron un proyecto político llamado Unidad Popular que llevaría a uno a la presidencia y a otro al reconocimiento universal en la literatura.
El barroco como enigma: jeroglíficos celestes
Authors: Galán Montemayor Carmen Fernández
Published: September 2019

El lado fúnebre del barroco ha sido oscurecido por la posmodernidad. El término tiene tantos usos y significados que los claroscuros se vuelven estereotipos, las polifonías dejan de susurrar al oído y los dioses esconden su imagen. Éste es un intento por recuperar algunos de sus ecos olvidados y desplegar otra cara de la luna a través de la tradición novohispana de exequias fúnebres y de las difusas fronteras entre el mito y la ficción. Barroco como estilo, barroco como época y como era, su presencia siempre confusa nos devuelve la clave de los espejismos y las utopías.
Sistema de monitoreo para una plataforma aérea usando sistemas embebidos
Authors: Beltrán Raúl Fernando , Llumiquinga Iván Alexander , Ávalos Eduardo , Rodas Benalcázar Ana
Published: September 2019

El sector aeronáutico está atravesando por una etapa donde la construcción de vehículos aéreos no tripulados, llamados UAV’s de las siglas en inglés “Unmanned Aerial Vehicles”, es un área de gran desarrollo. Este proyecto se encuentra enfocado al desarrollo de un sistema de monitoreo para ser embarcado en la plataforma aérea el cual está constituido por dos partes esenciales: el módulo de adquisición de datos que es incorporado al fuselaje del vehículo de prueba y de una estación en tierra en la cual se presentan todos los datos adquiridos, y que cuenta adicionalmente con un simulador de un hexacóptero implementado en el entorno de desarrollo Unity.
Inserción de la etnomatemática en la formación docente en la educación superior ecuatoriana
Authors: Cadena Villota Juan , Collaguazo Singo Javier
Published: September 2019

La etnomatemática como una nueva mirada de la matemática entraña en sus dimensiones: cognición, conceptualización, educación, epistemología, historia y política, lo cual implica un cambio en el paradigma educativo tradicional. Para este trabajo se consideran primordiales las instancias conceptuales e históricas, sin perjuicio de abordar las otras dimensiones. La educación matemática en el Ecuador ha venido asumiendo contenidos curriculares emanados solamente de la fuente euro centrista, no se ha considerado ni siquiera el análisis de los status espacio–temporales de la generación de los conceptos matemáticos, peor aún, no se han incorporado los saberes emanados de la raíz pre hispánica. El presente trabajo propone insertar la etnomatemática en la formación docente mediante contenidos con carga histórica crítica, realizando comparaciones, analogías y contrastes entre los diferentes lugares, ambientes y temporalidades del desarrollo matemático. Los contenidos se han escogido en base a diferentes lecturas y aproximaciones a nuestra realidad latinoamericana. Se presenta en forma de una propuesta metodológica con un análisis estadístico preliminar, conceptualizaciones contemporáneas y una propuesta de actividades didácticas, producto de dar respuesta a la necesidad de enfrentar el problema de la defi ciente educación matemática a través de las consideraciones socioculturales, epistémicas y fi losófi cas inherentes a paradigmas concernientes a la etnomatemática.
Evaluación de los efectos de la contaminación ambiental, en la productividad de los cultivos agrícolas, en la parroquia de Tumbaco
Authors: Espín Mayorga Manuel Eduardo
Published: September 2019

Los objetivos de la investigación apuntan a determinar los niveles de contaminación del aire, agua y suelo y a evaluar sus efectos en la productividad de los cultivos en los barrios: La Morita, La Tola, El Arenal, La Esperanza, y Collaquí, ubicados en la parroquia de Tumbaco. Se realizó una encuesta de campo para identificar: las áreas; tipos de cultivo y los actores sociales involucrados. Se investigó y evaluó la calidad ambiental de la zona, mediante la determinación de la calidad del agua, del aire y del suelo. Se compararon los datos obtenidos en laboratorio con los límites de calidad de la normativa ambiental para uso agrícola vigente y se determinó los efectos de la calidad ambiental en la disminución de la productividad agrícola de la zona de estudio. Se observa que existen concentraciones de boro y de coliformes fecales que superan los límites permisibles, por la norma de agua de riego, que pueden afectar a cierto tipo de productos. Los cultivos rastreros como frutillas, legumbres y hortalizas deben ser prohibidos. Los niveles de calidad del aire, a excepción de las concentraciones de partículas sedimentables en los sectores de La Esperanza y Collaquí, están dentro de la norma. Existe presencia de concentraciones de cobre, mercurio, vanadio, zinc, en el suelo de la zona en estudio, por el uso de plaguicidas y abonos orgánicos, lo que no ha incidido significativamente en la reducción de la productividad agrícola, en el área señalada.
Estudio para la implementación in situ y on site del método combinado físico, químico y biológico para la descontaminación de áreas impactadas por derrames de hidrocarburos
Authors: Ledesma Sarmiento Giovany Eduardo , Palacios Cabrera Teresa Alejandra
Published: September 2019

El presente trabajo de investigación trata acerca de la implementación in situ y on site de la combinación de tres técnicas física, química y biológica para la recuperación de ecosistemas afectados por derrames de hidrocarburos a nivel nacional e internacional, debido a la optimización de recursos tales como costo y tiempo de restauración, así como por su compatibilidad y afinidad con el medio ambiente, por el uso de dispersantes biodegradables, tala selectiva de especies vegetales, reconformación del suelo y reforestación del área remediada con plántulas nativas. La implementación de este método combinado in situ y on site en un ecosistema impactado por un derrame de hidrocarburos en la zona nororiental del Perú, arrojó como resultado un alto porcentaje de eficacia en la restauración de este ecosistema, por lo tanto se convierte en una alternativa muy recomendable para su aplicación en la recuperación y restauración de ecosistemas afectados por derrames de hidrocarburos, siempre que se ajusten los requerimientos establecidos para las variables críticas de todo el proceso.
Desarrollo de software para la selección de métodos de Recuperación Mejorada de Petróleo
Authors: Bolaños Zarate José Eduardo , Pinto Arteaga Gustavo Raúl
Published: September 2019

En la presente investigación se desarrolla un software para la selección de métodos de recuperación mejorada óptimo para cada yacimiento con base a propiedades petrofísicas y de fluidos; a través del análisis de los parámetros estimados por Taber, Martin & Seright para la aplicación de métodos de recuperación mejorada, con el cual se pudo determinar parámetros mínimos, adecuados y óptimos de trabajo para cada uno de los métodos. El Software desarrollado basa su funcionamiento en los criterios establecidos en el trabajo de Taber et al., donde constan 8 métodos de recuperación mejorada de petróleo, cuya selección depende de rangos establecidos para 9 parámetros petrofísicos y de fluidos. Los mismos que posterior a la realización del análisis del estudio publicado del Mar del Norte hasta 2005, fueron actualizados. La validación de resultados del software se realizó a través del ingreso de datos de 18 campos y un análisis comparativo con un software comercial, tiene que: • Se puede utilizar la inyección de gases miscibles e inmiscibles en pozos cuya profundidad superó los 12000 ft para crudos de un alto API y una baja viscosidad. • Se pudo actualizar algunos parámetros anteriormente definidos por Taber. • El software desarrollado en ningún momento pretende reemplazar la fase de pruebas de laboratorio y campo, previo a la implementación de un proyecto de recuperación mejorada En Ecuador la aplicación de tecnologías EOR aún es un tema nuevo y a pesar de que existen software comerciales para selección de métodos (screening), hasta ahora no se había generado una herramienta nacional. Los resultados de esta investigación serán un futuro módulo de un software más completo de recuperación mejorada de petróleo que actualmente se trabaja en la Universidad Central del Ecuador.
Métodos de minería de datos ligados a la inteligencia artificial aplicables a riesgo crediticio
Authors: Jimbo Santana Patricia , Villa Monte Augusto , Lanzarini Laura , Fernández Bariviera Aurelio
Published: September 2019

Cuando las instituciones financieras seleccionan, apropiadamente, a sus clientes disminuyen su riesgo de crédito. Los bancos utilizan diversas metodologías con la finalidad de clasificar a sus clientes de acuerdo al riesgo de impago que presentan; para esto se analiza un conjunto de variables personales, así como la situación financiera del cliente que es sujeto de crédito. El análisis y procesamiento exhaustivo de la información del cliente lleva bastante tiempo, una de las causas es que los datos a analizar no son homogéneos. En este trabajo se presenta un método alternativo capaz de construir, a partir de la información disponible, un conjunto de reglas, de clasificación con tres características principales: precisión adecuada, baja cardinalidad y facilidad de interpretación. Esto último está dado por el uso de un número reducido de atributos en la conformación del antecedente. Esta característica, sumada a la baja cardinalidad del conjunto de reglas permite distinguir patrones sumamente útiles a la hora de comprender las relaciones entre los datos y tomar decisiones. Cuando se trata de decidir el otorgamiento de créditos, resulta sumamente útil contar con una herramienta de este tipo. Mientras más simple sea el modelo, menor será la cantidad de características del sujeto de crédito que deben ser analizadas, por lo que las decisiones pueden tomarse con mayor rapidez; esto permite que el método resulte atractivo para los oficiales de crédito en las instituciones financieras, ya que se puede dar una respuesta al solicitante del crédito en menor tiempo logrando una ventaja competitiva. La metodología propuesta ha sido aplicada a dos bases de datos conocidas en la literatura y a dos bases de datos reales de entidades financieras del Ecuador, una Cooperativa de Ahorro y Crédito y un Banco que otorgan diferentes tipos de créditos y tienen agencias en las regiones costa, sierra y oriente. Los resultados obtenidos han sido satisfactorios. Finalmente se exponen las conclusiones y se sugieren futuras líneas de investigación.
Optimización de la producción del campo Parahuacu mediante técnicas de estimulación
Authors: Ayala Piña Denisse Michelle , Pinto Arteaga Gustavo Raúl
Published: September 2019

La optimización de la productividad del campo Parahuacu es posible mediante técnicas de estimulación tales como fractura hidráulica y acidificación de areniscas, puesto que el campo presenta un declive de producción y un potencial de productividad bastante significativos. Se determinó el estado actual de 9 pozos pertenecientes al campo, de los cuales 5 pozos están cerrados (PRH_04, PRH_05, PRH_08, PRH_09 y PRH_21) y 4 abiertos (PRH_02, PRH_13, PRH_18 y PRHN_01), de manera que sea posible identificar si cumplen las condiciones mecánicas necesarias para la intervención y cuál sería la técnica de estimulación apropiada, si sus reservorios son aún capaces de producir. Se analizaron las curvas IPR con el fin de determinar cuan beneficiosa resultaría la intervención, estas curvas se presentaron en función de las características más relevantes de los reservorios, tales como: Pr, Pwf, Pb, k y s. Para determinar la factibilidad técnica se analizaron los criterios: Pruebas iniciales de perforación y completación, historial de producción, historial de reacondicionamientos, última intervención, registros de pozos, resultados de Build up, estado mecánico actual, registro de cementos y curvas IPR. Para determinar la técnica de estimulación adecuada se analizó la permeabilidad y el daño. Con la aplicación de las técnicas de estimulación sugeridas a los 9 pozos, se obtuvo un incremento de producción de 2074 BPPD.
Tratamiento de drenaje ácido de mina con el uso de zeolita natural a escala experimental
Authors: Moreno Balseca Alex Rodrigo , Palacios Cabrera Teresa Alejandra
Published: September 2019

El presente proyecto de investigación se realizó en el Instituto Nacional de Investigación Geológico Minero Metalúrgico (INIGEMM) con un total de 40 litros de agua del Drenaje Ácido de Mina (AMD, por sus siglas en inglés) recolectados en la Quebrada “El Panteón”, Parroquia Torata, Cantón Santa Rosa, Provincia de El Oro. El AMD se trató mediante un sistema de tratamiento que consistió en una serie de dos columnas de lixiviación conectadas por flujo a través de una bomba peristáltica, las cuales contenían materiales reactivos tipo Sustrato Alcalino Disperso (DAS, por sus siglas en inglés), y la adición de zeolita natural como un medio filtrante. En el sistema de tratamiento se realizaron 12 mediciones de conductividad y pH, mientras que, para el análisis de metales (Al, Fe, Cu, Pb, Zn, Mn y Cd) y el anión SO42- se realizaron cuatro mediciones. El valor de pH promedio de AMD tratado fue 8.03 y la conductividad promedio obtenida fue de 3254μS/cm. La eficiencia de remoción promedio tratada fue: Al (97.81%); Fe (99.79%); Cu (91.42%); Pb (83.33%); Zn (99.84%); Mn (96.14%); Cd (88.54%) y SO42- (51.47%). El sistema presenta una alta remoción de metales conforme a los resultados obtenidos, por lo que la descarga cumple con la normativa ambiental nacional, exceptuando el anión SO42-.
Estudio de exploración inicial: Proyecto geológico-minero Guanajuato México
Authors: Llerena Marcelo , Guerrero Byron , Espinosa Denisse
Published: September 2019

El presente proyecto se enfocó en determinar la existencia de recursos minerales metálicos (oro y plata) a través de modelos geológicos-alteraciones, geoquímicos y estructurales, con la finalidad de definir recursos y reservas; las fuentes de compilación de información fueron del gobierno, empresas privadas y misiones extranjeras, las cuales permitieron identificar a través del Sistema de Folios la compilación, estandarización y análisis de la información, justificando la primera fase de la exploración inicial del proyecto. Se utilizó las herramientas de mapeo geológico-estructural, alteraciones, muestreo geoquímico de rocas y arcillas, obteniendo un modelo geológico de yacimientos epitermales de baja sulfuración y determinando la existencia de mineralización para Au, Ag, y otros elementos metálicos. Los resultados obtenidos permitieron proponer cuatro targets o blancos de perforación, con la posibilidad de ser capaces de identificar los vectores que indiquen distritos mineralizados con alto potencial de prospección y explotación, generando nuevas zonas geológicamente favorables y potencialmente prospectivas
Physical fundamentals of low-temperature laser ablation of biotissues: quasi-continuous radiation mode
Authors: Zheltov George I. , Romanov Oleg G. , Bourko Wladimir D.
Published: September 2019

Applied to solving practical problems of extremely accurate laser surgery; the present study examines the conditions of deep, controlled, low-temperature dissection of biological tissues by quasi-continuous laser radiation of the infrared spectrum based on forming a directional wave of environmental enlightment.
Genetic divergence between feral populations of rape and varieties Brassica napus L.
Authors: Lemesh Valiantsina A. , Bahdanava Maryna V. , Mozgova Galina V. , Burakova Aryna A. , Kharuzhy Mikalai E.
Published: September 2019

The study assessed the genetic diversity of commercial varieties and feral populations of oilseed rape (Brassica napus L.) grown in the Republic of Belarus according to the genotyping data of 7 microsatellite loci – Na12D08, Ol12D04-1, Ol12D04-2, Ra2A05, Na10H03, Na14H11, Ol11B05. The following parameters were calculated: the average number of alleles per locus, the eﬀective number of alleles, the levels of expected and observed heterozygosity, % of polymorphic loci. The results indicate a greater genetic diversity in feral oilseed rape populations. According to the cluster analysis, one feral population fell into a cluster of commercial varieties and demonstrated similarities with the variety Atora, which indicates its recent wildness and the preservation of the genetic characteristics inherent in cultivated varieties. The variety Mercedes was clustered together with samples of feral populations, which may indicate its hybrid origin. An analysis of the structure of the genotype distribution in the Structure software showed the division into three clusters – commercial varieties, feral populations and samples of B. rapa. The established genetic divergence between feral populations and commercial varieties indicates that feral oilseed rape is able to maintain persistent populations inBelarus. In practice, this should be taken into account while assessing the environmental risk when transgenic rape is released into the environment. When cultivating transgenic rapeseed, special attention should be paid to measures to prevent the occurrence of its free-growing populations.
Clinical reasoning of application of stem cells in the treatment of gingival recession
Authors: Rubnikovich Sergei P. , Volotovsky Igor D. , Denisova Yulia L. , Andreeva Vasilina A. , Panasenkova Galina Yu.
Published: September 2019

The aim of the study is to improve the results of complex treatment of patients with gingival recession on the basis of validation of new, highly eﬀective methods using autologous mesenchymal stem cells. A complex treatment was conducted in 93 patients with an anatomical recession of the gum in combination with dentoalveolar anomalies at the age of 20 to 29 years. Patients were divided into 3 groups depending on the treatment used. All patients underwent periodontological treatment. In the 2nd group, patients underwent periodontological treatment including orthodontic equipment, in the 3rd group, they underwent orthodontic treatment, and a cell transplant based on a mixture of autologous mesenchymal stem cells and sterile bioplastic collagen material “Collost” was used. A comprehensive assessment of the periodontal tissue of the three groups showed that among the patients who received the standard treatment complex, a good condition of the periodontal tissues in 1 to 2 years after treatment was noted only in 16.7 % of the patients of the 1st group. Inclusion of orthodontic treatment made it possible to obtain good results in 25 % of patients in the 2nd group, which is 8 % more than in the 1st group. At the same time, good treatment results were revealed in 94 % of the 3rd group patients, who underwent periodontological and orthodontic treatment using autologous mesenchymal stem cells, which confirms the need for measures aimed to normalize the position of teeth, dentition and bite with the use of small orthodontic long-acting forces, to improve the microcirculation of periodontal tissues, and to restore the contour of marginal dreams. Inclusion of autologous mesenchymal stem cells in the complex treatment of patients with gingival recession is accompanied by a 1.6-fold decrease in the prevalence and gum recession (1.15 mm), and a 2.6-fold increase in the tissue volume, by the stimulation of periodontal microcirculation processes (the capillary periodontal pressure is increased by a factor of 1.1 time and the intensity of periodontic microcirculation is increased by a factor of 3.1 times), as well as by the normalization of the position of teeth, dentition and occlusion, which allowed one to obtain good long-term results in 94 % of patients.
Unsteady model of the hydration process of a reinforced concrete product at software-controlled heating
Authors: Niyakovski Alexander M. , Ramaniuk Uladzimir N. , Chychko Аleksandr N. , Yatskevich Yury V.
Published: September 2019

The development of mathematical models for design of the thermal technology equipment intended for accelerated hydration of concrete products is an urgent task of industrial heat power engineering. The introduction of mathematical modeling methods can reduce the time and the resources spent for the development of technological regimes that reduce energy consumption in the production of building structures and, ultimately, in the construction of buildings and structures for various purposes. There is not yet a generally accepted mathematical model of thermal processes occurring in thermal technological installations in the case of accelerated hardening of a three-dimensional concrete object. The purpose of this work is to develop an unsteady model of the concrete hydration process applied to a symmetrical three-dimensional reinforced concrete product at software-controlled heating. By using the numerical finite-volume method in the case of a 0.3 × 0.3 ×0.3 mcube, a three-dimensional feld of hydration in a concrete object at a given operation mode of a heater is calculated. The following heating mode was used: “heating–maintaining at a constant temperature–cooling”. The dependences of a temperature diﬀerence between reinforced and non-reinforced cubic products on the hardening time at the corresponding space points in the direction from the surface to the center of the product have been obtained. By the example of the numerical simulation results, it is shown that the evolution of the hydration degree at these points during the hardening of non-reinforced concrete diﬀers from the hardening of reinforced concrete. The time dependences of heat treatment of a rate of temperature change and the hydration coefficient at the selected points of a product are presented. The obtained results are analyzed.
Flotation enrichment of potash ores of different mineralogical composition
Authors: Dikhtievskaya L. V. , Shlomina L. F. , Osipova E. O. , Shevchuk V. V. , Mozheyko F. F.
Published: September 2019

The studies on the development of flotation enrichment technology for potash ores (sylvinite, kainit-halite, carnallite-kainit-halite) were conducted. Optimal flotation conditions: salt composition, density and pH of the dispersion medium, collector of the useful component, auxiliary reagents-frothers, hydrophobisators, depressors for obtaining highly enriched potassium-containing concentrate have been developed for each ore. On the example of sylvinite ore enriched by direct flotation in ore-saturated solutions with a density of 1235 kg/m3, it was shown that the use of a combination of frothers (pine oil, polyethylene glycol) and apolar reagents (liquid paraffins, industrial oil) as part of a complex collector based on higher aliphatic amines (C16 –C18) provides an increase in the extraction of potassium chloride to the concentrate with high quality of the latter. For kainite-halite ore enriched by direct flotation in the saturated aqueous solution of magnesium chloride with a density of 1284 kg/m3 and pH 6–7, lower aliphatic amines (C10 –C12) in combination with amyl alcohol or caprylic acid are effective as a collector of kainite. Carnallite-kainite-halite ore is enriched by reverse flotation in aqueous solutions of magnesium chloride with a density of 1285–1295 kg/m 3 and pH 3–4 using the halite collector of the hydrochloric acid salt of alkylmorpholine.
Wetting of isotropic mickrotextures formed on the surface of glass and aluminium
Authors: Koshevar V. D. , Kazhuro I. P. , Shkadrecova V. G. , Pismenskaya A. S.
Published: September 2019

The paper studies the wetting of aluminum and glass surfaces with disordered roughness created by technologically simple methods: chemical deposition with simultaneous self-organization of nanoparticles on microprotrusions and valleys, as well as the application of thin coatings using polymer-dispersed systems with polymodal particle size distribution. Super-hydrophobic coatings with an edge wetting angle of 160–170° and a wetting hysteresis of no more than 10° on electrochemically nanostructured aluminum, processed by the dispersion with the polymodal distribution of aerosil microparticles, silicon oxide nanoparticles SiDB and carbon nanocomposite SHDB (Nanosintal, Belarus) in fluorinated varnish. The regularities of changes in the wetting angle of silicate glass with the coating of the same varnish with small additives were established, showing its significant growth with an increase in the content of aerosil microparticles and a decrease in the lacquer concentration. The increase in the content of SiDB and SHDB does not significantly affect the contact angle, but it significantly reduces the hysteresis of its wetting, which gives the glass the effect of “lotus”.
Mutational spectrum of the SERPING1 gene in patients with hereditary angioedema
Authors: Guryanova I. E. , Paliakova K. A. , Belevtsev M. V. , Aleynikova O. V.
Published: September 2019

Hereditary angioedema due to the C1-inhibitor deficiency (Type I) or the dysfunction (Type II) is a rare genetic condition characterized by recurrent episodes of edema with an estimated frequency of 1:10 000 and 1:50 000 in the global population without racial or gender differences. HAE Type III is even less common, and unlike Types I and II, it does not appear to be connected with the levels of the C1-inhibitor. For 45 patients (64.44% female; 35.56% male) from 19 unrelated families C1-INH-HAE was confirmed. A series of 19 different mutations in the SERPING1 gene was identified: 17 splicing (37.7%), 15 missense (33.3%), 8 frameshift (17.8%), 3 large del (6.7%), 2 nonsense (4.5%) mutations were found. De novo mutations were detected in 8 patients (17.78%). For 6 patients, the HAE diagnosis was determined at the pre-symptom stage. 9 C1NH mutations had not been previously described. The number of different mutations identified highlights the heterogeneity of the C1 inhibitor deficiency.
KERAGAAN USAHA AYAM RAS PEDAGING DI KECAMATAN PARUNG BOGOR: PERBANDINGAN USAHATERNAK MITRA DAN USAHATERNAK MANDIRI
Authors: Nurfadillah Suryani , Rachmina Dwi
Published: September 2019

Broiler farming is one of the potential business, but this business has a high risk and requires substantial capital. One of the strategies that is used to overcome the problem is a partnership. Cogreg Village is one of the broiler producer areas in Bogor District. Most of the broiler farming in Cogreg are small and conventional farms. It is managed by a partnership which is different from broiler partnerships in general. The objectives of this study were to analyze the partnership and to compare the farm performance between partnership and independent broiler farm in Cogreg Village, Parung Subdistrict, Bogor Regency. This study used farm income analysis and R./C ratio method. The results showed that production, income, and the R/ C ratio of partnership member were higher than those of independent farmers on any scale. This proves that the partnership has a positive effect on broiler farming production and income. However, based on the qualitative analysis, it can be stated that the benefit sharing between farmers and firms is not balanced. The benefit received by the firm was much higher than that received by the farmer. The study recommends the need to establish a written partnership contract and improve maintenance management system, especially feed management.
EFISIENSI TEKNIS USAHATANI KEDELAI PADA LAHAN TADAH HUJAN DAN LAHAN KERING DI KABUPATEN PIDIE JAYA, ACEH
Authors: Ismail Muhammad , Fariyanti Anna , Rifin Amzul
Published: September 2019

National soybean productivity was reach 1,45 tons per hectare, while the potential yield reach 2,0-3,0 tons per hectare. The aim of this study was to analyze the factors affecting technical efficiency, and sources of technical inefficiency of soybean farming. This study used primary data that were obtained from 100 farmers purposively, those data were analyzed by production function analysis that stochastic frontier to analyzed the factors that influence the production of technical efficiency of soybean farming. The results showed that the variable land, solid fertilizer, liquid fertilizer, pesticide solid, liquid pesticides, and labor have a positive impact, while the variable seed has a negative impact on technical efficiency of soybean farming. The source of technical inefficiency such as the age of the farmer, and experience farming soybean have negative and significant impact on technical inefficiency of soybean farming. Otherwise, the formal education, old farming, the number of dependents, and the dummy variable (following the extension and land type) have a positive impact but not significant to technical inefficiency of soybean farming in Pidie Jaya, Aceh Province.
ANALISIS HUBUNGAN WATAK KEWIRAUSAHAAN DENGAN KINERJA USAHA PETERNAKAN AYAM RAS PEDAGING DI KECAMATAN PAMIJAHAN, KABUPATEN BOGOR
Authors: Ramadhan Rizky Prayogo , Burhanuddin Burhanuddin
Published: September 2019

Broiler farm is one of businesses that have a high risk level for production and price, but it doesn’t reduce the interest of broiler farmers to commercialize broiler. This indicates that broiler farmers have the entrepreneurial characteristics that can be studied and linked to the performance of the business itself. The objectives of this research are to identify the entrepreneurial characteristics of the broiler farmers and the correlation of entrepreneurial characteristics to the business performance of broiler farm. The results showed that risk taking character was the most dominant character owned by broiler farmers in Pamijahan, Bogor. Furthermore, the ability of breeders in carrying out their businesses had a significant correlation to the effectiveness of labor in broiler poultry. Then, the leadership skills, risk taking characters, ability to make some decisions, and the ability of breeders in carrying out their businesses had a significant correlation to determination of chicken harvested.
THE FACTORS OF INITIAL RETURN RELATED TO IPO COMPANIES ON THE INDONESIA STOCK EXCHANGE
Authors: Widyawati Glynae , Juanda Bambang , Andati Trias
Published: September 2019

Companies that conduct IPOs will increase company’s value with an optimal capital structure. Initial return is a profit that investors can obtain from the initial share price is lower than the opening price of the secondary shares on the first day. Underpricing conditions occurs because the initial stock price is lower than the secondary stock price on the first day. This study aimed to analyze factors that impact initial returns on companies that conduct IPOs on the Indonesia Stock Exchange, analyze the effects of financial factors (ROE, DER, and BI Rate) and non-financial factors (professional auditors and underwriters) on initial returns to companies conducting IPOs in IDX, and how the behavior of investors towards those analysis. The linear regression data processing using SPSS 16 produced result that only the BI Rate variable which affected the initial return on the seven days, 30 days, and one year after the IPO observation period. The statistical results show the best r-square value is 17.6 percent, which means that the independent variables can be used to explain the effect to the initial return on 17.6 percent.
ANALISIS INTEGRASI PASAR SPASIAL KOMODITI PANGAN ANTAR PROVINSI DI INDONESIA
Authors: Arnanto Arnanto , Hartoyo Sri , Rindayati Wiwiek
Published: September 2019

Food prices stabilization through the food production and trade to fulfillment consumption in terms of both availability and accessibility food is government major problem. Government’s ability to determine an appropriate pricing policy depends on market structure, behavior and effectiveness. Trade barriers and market failure reduction, improved access information would make market integration effective and efficient. This study aims to analyze the market integration and the price transmission elasticity that occurs between regions in Indonesia. Using Ravallion integration analysis and a span from 2009 to 2013 on 33 provinces retail prices data in Indonesia to capture level integration and price transmission between regions. The results showed in the rice shows that Jakarta and South Sulawesi region is becoming the leading market and Jakarta for sugar market those integrated with most areas in Indonesia. Sugar and rice have a better degree of integration than soya. Integration analysis with Ravallion models cannot explain two areas integrated or not. It is necessary to study towards further for East Java in terms of either regional autonomy policy or any market failure that occurs in order to find a policy solution to be more integrated. Key words : Food, Market integration, Ravallion model
AKSES DAN DAMPAK KREDIT MIKRO TERHADAP PRODUKSI PADI ORGANIK DI KABUPATEN BOGOR
Authors: Wati Dewi Rohma , Nuryartono Nunung , Anggraeni Lukytawati
Published: September 2019

The ultimate problem of organic paddy farm is limited access formal credit due to collateral requirement. Farmers only have access to semi-formal institution like cooperatives and group of farmers (Gapoktan.red) because of simplicity of administration procedure and payment system. The objectives of this study are to analized accessibility of micro-credit to organic paddy farmers in Bogor and its impact to production of organic paddy. With Heckman Sample Selection Model, we found that access of credit influenced negatively by age of farmers, number of household member, membership of farm group, and the acreage of land use. Microcredit give significant impact to production of organic paddy and it is simultaneous with fertilizer and labor. Microcredit that they have taken used to pay labor and also bought the fertilizer. Keywords : access of microcredit, impact of microcredit, production of organic paddy
IMPLEMENTASI PRINSIP PRODUKSI EKONOMI ISLAM PADA MEBEL IRA BERSAUDARA KOTA BENGKULU
Authors: KHUSNUL KHOTIMAH MARTINA , ACHIRIA SITI
Published: September 2019

Kementerian kehutanan dan industri menyatakan bahwa dari tahun 2016 hingga tahun 2018 pertumbuhan industri mebel cenderung mengalami penurunan dari 10% menjadi 6% .Penelitian ini adalah penelitian kualitatif untuk menganalisis penerapan prinsip-prinsip produksi ekonomi Islam pada mebel Ira Bersaudara di Kota Bengkulu.Prinsip produksi ekonomi Islam untuk diterapkan dalam proses produksi untuk meminimalkan kegiatan produksi yang menyebabkan kerugian. Manusia yang terlalu cinta terhadap dunia adalah satu hal yang membuat manusia bertindak tidak sesuai dengan aturan atau etika, sehingga aturan nilai dan norma pada prinsip produksi memiliki posisi yang sangat penting dalam tindakan kontrol agar tidak menimbulkan bahaya bagi orang lain. Hasil penelitian ini adalah mebel Ira Bersaudara belum maksimal dalam menerapkan prinsip produksi ekonomi Islam. Maka diperlunya tingkat kesadaran dengan cara mengintropeksi apakah prinsip produksi yangdigunakan sudah sesuai dengan ajaran Islam.
EFEKTIFITAS INSTAGRAM SEBAGAI MEDIA PERSUASI FILANTROPI ISLAM BAGI MAHASISWA
Authors: Yustati Herlina
Published: September 2019

Through this paper the author will measure the effectiveness of Instagram as a media for persuasion of Islamic philanthropy for students. Because Instagram is a social media that is in great demand by the younger generation. This research is a quantitative study with a questionnaire as a research instrument, population for tihis research was students of the zakat waqf management study program of IAIN Bengkulu, sample was a saturated sample,   consist of 76 students. Measuring the level of effectiveness using the AIDA method (Attention, Interest, Desire and Action). The results showed that the effectiveness of Instagram was in the good category as a persuasion media for Islamic philanthropy for students.
PENGARUH KARAKTER ENTREPRENEUR TERHADAP MINAT BERWIRAUSAHA (Studi Empiris Pada Santri di Pondok Pesantren Al-Ittifaq Ciwidey Bandung)
Authors: Polindi Miko
Published: September 2019

This research is based on seeing the success of some students of Al-Ittifaq Pesantren who become entrepreneurs. The purpose of this study is to find out how much influence the entrepreneur character of entrepreneurship interests of boarding school students al-ittifaq Ciwidey Bandung. With the rationale based on the theory proposed by William D. Bygrave, Suryana, Theo Suhardi and Slameto which suggests that in general the factors that affect one's entrepreneurial interest is the factor of personality (from within oneself). So from this theory researchers used entrepreneur character variables as an independent variable and entrepreneurship interest as a dependent variable. The research method used in this research is descriptive method verifikatif, through survey with data collection techniques using questionnaire and observation. The samples taken were 10% of the total population using the Slovin formula. The results of this study conclude that there is a positive but not significant influence between entrepreneur character variables on entrepreneur interest. Where the amount of influence that is equal to 0.39%. There is a positive influence on this variable, in line with the theory proposed by Suryana which reveals that one of the factors that influence one's entrepreneur interest is personal factor (character / character).
RIBA VS ZAKAT DALAM PERPEKTIF EKONOMI ISLAM
Authors: Sitorus Iwan Ramadhan
Published: September 2019

The main characteristic of Islamic economics compared to the conventional economy is the prohibition on taking usury or interest in each transaction. The use of other people's assets in an unfair way, in the form and through any means, is prohibited in the Qur'an. Usury which is interpreted as an addition, definitively involves consuming (eating) the wealth of others in a physical way. Usury is directly opposite the cooperative spirit in Islamic teachings. People who are rich, in Islamic teachings, are required to give the rights of the poor by paying zakat and then giving alms in addition to the zakat. Islam does not allow Muslims to make their wealth a vehicle for sucking the blood of poor people. Al-Qur'an letter Ali Imran verse 130 states that happiness (falah) will be obtained by abandoning this usury system, and at the same time the Qur'an states that happiness cannot be obtained through ribawi practice. Because usury is based on injustice
PENERAPAN ANALISIS FUNDAMENTAL TERHADAP PERUSAHAAN PERTAMBANGAN TBK DALAM MEMBELI SAHAM
Authors: INDRA YETTI AFRIDA
Published: September 2019

The purpose of this research is to find out the influence Fundamental analysis ( of price earning ratio, earning per share, dividend per share, and dividend payout ratio) to the enhancement of mining companies’ stock price in 2014 – 2018 periods. The sample collection technique has been done by using purposive sampling method, and the samples are 6 companies. The statistic test method has been done by using multiple linier regression analysis. The independent variables in this research are price earning ratio, earning per share, dividend per share, and dividend payout ratio. The dependent variable is stock price. The result of this research show that price earning ratio, earning per share, dividend per share have significant and positive influence to the stock price. Meanwhile, dividend payout ratio have significant and negative influence to the stock price. It can be seen from the result of partial coefficient determination and it can be concluded that the variable which has dominant influence to the stock price is dividend per share because its partial coefficient determination is bigger than other independent variables.
PENGARUH KOMUNIKASI, PELATIHAN DAN MOTIVASI TERHADAP KINERJA PEGAWAI BADAN NARKOTIKA NASIONAL PROVINSI BENGKULU MENURUT PRESPEKTIF ISLAM
Authors: DEWI RATIH KOMALA
Published: September 2019

This study describes the influence of communication, training, and motivation on employee performance in the Bengkulu Province National Narcotics Agency. The method of data collection in research subjects was determined using purposive sampling, namely all employees of the National Narcotics Agency of Bengkulu Province 64 people who were respondents in. The qualitative method of data analysis is done by processing SPSS 17 software data with F test statistics and t test statistics and drawing conclusions and verifying data. The results of this study indicate that communication, training and motivation have a simultaneously significant influence on the performance of the Bengkulu Province National Narcotics Agency. At the Bengkulu Provincial Narcotics Agency, communication as a medium for delivering information is very important to support the task of the National Narcotics Agency as a vocal point to make efforts to prevent, eradicate the use and illicit circulation of drugs. In addition, the training provided by the Bengkulu Province National Narcotics Agency greatly supports improved performance so that employees can work more optimally. Furthermore, the motivation given by superiors to employees of the Bengkulu Provincial Narcotics Agency also had a positive impact on employee performance.
PENGARUH KUALITAS PELAYANAN ADMINISTRASI AKADEMIK DAN KEMAHASISWAAN TERHADAP KEPUASAN MAHASISWA FAKULTAS EKONOMI DAN BISNIS ISLAM IAIN BENGKULU
Authors: Sumarni Yenti
Published: September 2019

This study aimed to analyze the quality of academic administration and students services in IAIN Bengkulu. The sampling technique was done by using purposive sampling, where in this case, the selected respondents are students who use the services of Academic Administration and Student Affairs who are active students from the beginning until the end of the semester with a sample size obtained that consists of 100 respondents. The data analysis was performed by using multiple linear regression analysis results from several related quality of academic administrative services obtained that the better the quality of Academic and Student Administration services, the higher satisfaction of students of the Faculty of Islamic Economy will be.
SOURCES OF MALAYSIA’S INCOME AND ITS ALLOCATIONS IN CONTEXT ISLAM'S PUBLIC FINANCIAL IN NEWEST ERA
Authors: Oktarina Amimah , Desiana Rina
Published: September 2019

In order to build an Islamic economic system in Islamic state, a state should manage its finance based on the principles of Sharia, both in the terms of earning or incomes and their allocations on the earnings side, a state should manage their incomes according to Islamic way. Than the result of their incomes should be allocated in order to achieve their goals, which is the prosperity of society. Tax is a policy which is settled by a government and decided according to the needs or necessities of state its self. For example, Malaysia has decided and managed their incomes sources such as tax, zakat, and awqaf. And they were allocated according to the needs or necessities of a state such as infrastructure, salaries, subsidies, and also to eight parts of zakat receiver.