bluuebunny/crossref_metadata_2025_split huggingface dataset:
EKSTRAKSI MULTI TAHAP KURKUMIN DARI TEMULAWAK (Curcuma xanthorriza Roxb.) MENGGUNAKAN PELARUT ETANOL
Authors: Dwimas Anggoro  , Rajian Sobri Rezki  , Siswarni MZ  
Published: October 2019

Curcumin is a pigment in turmeric (Curcuma xanthorriza Roxb.), which has an orange-yellow crystal appearance, and commonly being used as a colouring agent. Extraction method which is used in extracting curcumin from turmeric is one stage extraction. This research will study a multi stage extraction of curcumin from turmeric. The purposes of this research is to find the best condition in extracting curcumin using multi stages extraction method to increase the efficiency rate in curcumin extraction. This research used ethanol as a solvent, and effect from variables such as extraction time, solvent concentration, and number of extraction stages are observed. Extraction times are 60 minutes, 120 minutes, and 180 minutes. Variations of ethanol concentration are 50%, 70%, and 96%. Stage numbers of extraction are two stages extraction and three stages extraction. Extracts of curcumin are examined with qualitative analysis and quantitative analysis. The best condition of multi stages curcumin extraction is determined based on yield and content of curcumin. The maximum yield obtained in this study was 16,35 % with conditions 180 minutes extraction time, 96% ethanol concentration, and three stages extraction. The highest content of curcumin obtained is 2,617% with conditions 180 minutes extraction time, 96% ethanol concentration, and three stages extraction. Content means a fraction of yield. These results show that increase in the extraction time, the solvent concentration and the stage numbers of extraction will increase the yield and content of curcumin.
PENGARUH WAKTU DAN SUHU PEMBAKARAN DALAM PEMBUATAN ABU DARI KULIT BUAH MARKISA SEBAGAI SUMBER ALKALI
Authors: Hari Surya Purnama  , Herbert  , Rondang Tambun  
Published: October 2019

The purpose of this study was to determine the optimum of combustion time and temperature of ash production from purple passion fruit peel (Parcilora idollis Sims f edulis Deg.). The experiment was begun to dry passion fruit peel, then combustion to obtaine the ash from passion fruit peel. The combustion was done by muffle furnace which time variables were from 1, 2, 3, 4, 5 hours and burning temperature variables were from 400 oC, 500 oC, 600 oC, 700 oC. The potassium that contained in ash have been extracted by distilled water with volume comparison was 1 : 10 for 24 hours. Observed responses were ash content, normality, pH, conductivity and potassium oxide content (% K2O). The best result of ash was in 5 hours with temperature 500 oC. The ash was analyzed by using AAS Atomic Absorption Spectroscopy, and 39,95 % of potassium oxide (K2O) content was obtained as maximum result.
PENGARUH PENAMBAHAN INOKULUM, LAMA FERMENTASI DAN PENGADUKAN PADA PEMBUATAN VIRGIN COCONUT OIL (VCO) MENGGUNAKAN KHAMIR SACCHAROMYCES CEREVISIAE MURNI
Authors: Jernika Simangunsong  , Elisa Febrina  , Zuhrina Masyithah  
Published: October 2019

Virgin coconut oil (VCO) is coconut oil that processed without heating. This study about fermentation of VCO using Saccharomyces cerevisiae. The purposes of this research is to find the best condition like stirring times, stirring speeds, fermentation times and concentration of inoculum in the process of making VCO. The variation of stirring speeds are 25 rpm, 50 rpm, 75 rpm, 100 rpm and 125 rpm. Stirring time used was 15 minutes, 30 minutes, 45 minutes, 60 minutes and 75 minutes. The variation of fermentation times are 6 hours, 12 hours, 18 hours, 24 hours, and 30 hours and variation concentration of inoculum are 5%, 10%, 15%, 20% and 25%. For stirring effects, the highest yield was obtained 24,5% with stirring speed is 50 rpm and stirring time is 30 minutes and the lowest yield was obtained 8,5% with stirring speed is100 rpm and stirring time 75 minutes. For fermentation times and concentration inoculum effets, the highest yield was obtained from this research is 28,25% with addition inoculum is 10% and fermentation times is 24 hours. And the lowest yield is 15% with addition inoculum is 20% and fermentation times is 12 hours. The results of this research for stirring effects showed decreases yield of VCO and for the fermentation time showed increases yield of VCO and concentration inoculum showed no effect for yield of VCO.
PENGARUH PENAMBAHAN BENTONIT TERMODIFIKASI SEBAGAI PENGISI TERHADAP SIFAT MEKANIK DAN PENYERAPAN AIR KOMPOSIT EPOKSI
Authors: Alvian  , Kenrick  , Iriany  
Published: October 2019

Research about the application of modified bentonite as filler in epoxy has been done for the purpose of getting the best composition of modified bentonite as filler at epoxy composite to obtain the best mechanical properties such as tensile strength, impact strength and the water absorption. In this research, epoxy resin mixed with bentonite which have been modified using cetyltrimethylammonium bromide (CTAB) surfactant with various concentrations of 0,05M, 0,1M, and 0,15M. Modified bentonite filler and TiO2 then mixed with epoxy resin with various concentration of 5%, 10%, 15%, and 20% of filler from the total mass of the composite and then the composite was produced with hand lay-up method. The result of FTIR characterization showed that the bond between matrix and the filler produced was only interfacial bonding. The result of the mechanical properties test indicated that 5% of filler composition with 0,1M of surfactant concentration obtained the maximum value of tensile strength and mechanical strength respectively 33,667 MPa and 12564,9 J/m2. The result of mechanical properties test was supported by analysis of Scaning Electron Microscopy (SEM). On the test of water absorption, the water absorption capacity increased along with the increased of filler composition.
PEMBUATAN KARBON AKTIF DARI CANGKANG BUAH KARET DENGAN AKTIVATOR H3PO¬4 DAN APLIKASINYA SEBAGAI PENJERAP Pb(II)
Authors: Joko Murtono  , Iriany  
Published: October 2019

Activated carbon necessity in Indonesia was increasing along with the developments of the industriaization era. Based on natural product in Indonesia, probably activated carbon necessity could be guaranteed by domestic production. Rubber shells were solid waste which has potential for multiple uses such as raw materials for the manufacture of activated carbon. In this researched, rubber shells waste were processed into activated charcoal. The aim of this researhed was to determine the effect of the concentration of phosphoric acid activator toward the characteristics of the activated carbon and activated carbon absorption capacity to Pb(II). Shells rubber that passed by the of 100 mesh sieve was impregnated with phosphoric acid (H3PO4) as activator in the ratio fruit shells rubber: phosphoric acid (b:b) of 1:2 and varying concentrations of H3PO4 at 20%, 40%, and 60% for 1 hour. After immersion in the acid, then material was carbonized in a furnace at temperature 500 oC for 1 hour. Surface area of activated carbon was analyzed by usning Braunanear, Emmelt and Teller and concentration of adsorption of Pb(II) was measured by Atomic Absorption Spectroscopy. The results showed the general characteristics of activated carbon comparable to the Indonesian National Standard. The largest adsorption capasity percentage 74% is obtained using Rubber shell activated carbon that activated by 20% phosphoric acid .
LEACHING KALIUM DARI ABU KULIT COKLAT (Theobroma cacao L.) MENGGUNAKAN PELARUT AIR
Authors: Lilis Sukeksi  , Rizka Dwi Hidayati  , Aulia Bismar Paduana  
Published: October 2019

Recently much attention has been dedicated to generate of useful chemicals from biomass, such as potassium alkali from cacao husk. This potassium can be used as sources of alkali for soap manufacturing. The cacao husks were treated by leaching using water as a solvent to produce alkali potash. First step, the cacao husks and then were dried at 105 ºC for 24 hours. The dried of cacao husk was crashed using ball mill and resulting husk powder were burned in a furnace at 600 ºC for 6 hours and resulting the husk ash powder. The husk ash powder mass variables used in this leaching process were 5 g, 7.5 g and 10 g and the leaching time variables were 30 minutes, 60 minutes and 90 minutes. Meanwhile the leaching temperature variables were 45 ºC, 55 ºC and 65 ºC. The best temperature condition in this process was 65 ºC and leaching time 60 minutes, with the result of potash concentration was 1,01 N and the amount of potash as a potassium hydroxide is 39,91% was analyzed using Atomic Absorption Spectroscop (AAS).
EFEK TEKANAN PADA PERFORMANSI PEMANAS AIR TENAGA SURYA SISTEM PIPA PANAS DENGAN FLUIDA KERJA R718
Authors: Himsar Ambarita  
Published: October 2019

In this work a heat pipe type solar water heater using R178 as a refrigerant is studied experimentally. The objective is to investigate the effect of initial vacuum pressure on the performance of the solar water heater. An experimental apparatus that consists of three difference solar water heaters has been designed and fabricated. The heat pipe is filled with R178 and vacuumed at an initial pressure. The pressure is varied from 35 cm Hg, 40 cm Hg, and 45 cm Hg. The experimental apparatus is tested by exposing to solar irradiance in Medan city of Indonesia. The experiments are carried out for three different days. The averaged solar intensity at the first, second and third experiments are 497.76 W/m2, 405.27 W/m2, and 333.83 W/m2, respectively. The results show that maximum temperature of the hot water varies from 51.14oC and 62.22oC. In the first experiment, thermal efficiency of the solar water heater at initial vacuum pressure 35 cm Hg, 40 cm Hg, and 45 cm Hg are 30,94%, 32,01% and 34,38%, respectively. The similar trends are also shown in the second and third experiments. These facts suggest that R178 can be used as a refrigerant in a heat pipe solar water heater with a good performance. The higher vacuum initial pressure of the heat pipe results in higher thermal efficiency. The higest thermal efficiency of the present study is 45.92%. It occurs at initial pressure and average irridiance of 45 cm Hg and 333.83W/m2.
Estado actual de la mortalidad materna en el Perú
Authors: Guevara-Ríos Enrique 
Published: October 2019

Según la Organización Mundial de la Salud, cada día mueren aproximadamente casi 830 mujeres por causas prevenibles relacionadas con el embarazo y el parto. El 99% de la mortalidad materna corresponde a los países en desarrollo, y en estos países es mayor en las zonas rurales y en las comunidades más pobres. En comparación con otras mujeres, las jóvenes adolescentes corren mayor riesgo de complicaciones y muerte a consecuencia del embarazo1.
Para lograr una mayor reducción de la mortalidad materna, los países han adoptado una de las metas del Objetivo de Desarrollo Sostenible 3 que consiste en reducir la razón de mortalidad materna mundial a menos de 70 por 100 000 nacidos vivos y lograr que ningún país tenga una mortalidad materna que supere el doble de la media mundial1.
En el Perú según cifras de la Dirección de Epidemiología del Ministerio de Salud, la mortalidad materna pasó en 20 años, de 769 defunciones en el año 1997 a 325 en el 2016, lo que representa un descenso de 42%; mientras que la razón de mortalidad materna pasó desde el periodo 1990-1996, de 265 muertes maternas x 100,00 nacidos vivos, al 2015, a 68 x 100,000 nacidos vivos, lo que corresponde a un descenso del 75%. En el 2016 se han producido 325 muertes maternas, lo que resulta un hecho muy importante, al consignar el menor número de muertes maternas en los últimos 20 años2-4.
Este avance es muy significativo en lo que corresponde a la mejora de la salud de las mujeres durante el embarazo, parto y puerperio, que además implica que el Perú está trabajando con un enfoque de derechos humanos fundamentales, que promueve la defensa de los derechos reproductivos de las mujeres y sus parejas.
Asimismo el objetivo es disminuir las inequidades en el acceso a los servicios de salud y por lo tanto disminuyendo las diferencias entre las mujeres con ingresos altos y bajos y entre la población rural y urbana. Es digno de destacar el enorme esfuerzo que ponen cada uno de los trabajadores de salud para evitar una muerta materna en cada uno de sus establecimientos de salud, desde la zona rural más alejada, hasta el instituto más especializado.
Estado actual de la morbilidad materna extrema en el Perú
Authors: Guevara-Ríos Enrique 
Published: October 2019

La mortalidad materna ha disminuido en el Perú a una razón de 68 x 100,000 nacidos vivos1 lo cual significa un gran avance en la mejora de la salud materna en el país. Sin embargo debajo de la mortalidad materna hay una amplia base de casos de “Morbilidad Materna Extrema” (MME) la cual permanece aún sin describir y que pueden ser usados para la evaluación y mejoramiento de los servicios de salud materna.
Según la Organización Mundial de la Salud, una mujer que sobrevivió, pero casi murió de una complicación que ha ocurrido durante el embarazo, el parto o dentro de los 42 días siguientes a la terminación del embarazo es un near miss materno2.
Según la Federación Latino Americana de Sociedades de Obstetricia y Ginecología, la MME es una complicación grave que ocurre durante el embarazo, parto y puerperio, que pone en riesgo la vida de la mujer y requiere de una atención inmediata con el fin de evitar la muerte3. Estos casos, son mujeres que sobrevivieron a una grave condición de salud durante el embarazo, el parto o posparto se consideran casos “near miss”(casi perdidos). Este concepto es cada vez más de interés para la comunidad científica y los directores de los programas de atención de salud en el ámbito de la salud materna.
Los casos de MME se presentan en un mayor número que los casos de muerte, permitiendo conclusiones más validas acerca de los factores de riesgo y de la calidad de la atención. Las lecciones aprendidas del manejo de los casos que sobrevivieron pueden ser usadas para evitar nuevos casos de muerte materna. Estas lecciones pueden ser menos amenazantes para los proveedores de salud que las derivadas de los análisis de la muerte materna. Se puede realizar la entrevista con la fuente primaria de información: “la gestante sobreviviente”.
La identificación de los casos con MME permite la construcción de nuevos indicadores que facilitan la auditoria de la calidad por resultados. La vigilancia epidemiológica de la MME, es una de las estrategias del marco estratégico regional para la reducción de la razón de mortalidad materna.
Varios términos son usados para describir y definir la entidad. La identificación de estos casos es especialmente compleja: Near-miss, Morbilidad obstétrica severa, Complicación que amenaza la vida y Morbilidad materna severa aguda.
Telenovela e produção de sentidos identitários no contexto de imigração brasileira no Japão: recepção, discursos e formas de consumo
Authors: Suzuki Helen Emy Nochi , Mungioli Maria Cristina Palma 
Published: October 2019

O artigo discute alguns resultados de pesquisa sobre a produção de sentidos de identidade brasileira, nos discursos de imigrantes brasileiros no Japão, a partir do enfoque dos temas e discursos da telenovela Amor à Vida (Globo, 2013/2014). O estudo de caso com observação participante, realizado no Japão, incorpora em seu quadro teórico as discussões de Bhabha (1998), Martín-Barbero (2008), Bakhtin (2003) e Bakhtin-Volochínov (2010). A pesquisa de campo observou etnograficamente imigrantes brasileiros radicados naquele país em sua rotina de assistir à telenovela Amor à Vida, de setembro a dezembro de 2013. O estudo demonstrou a centralidade desse formato como elemento de construção de sentidos identitários, tanto em nível pessoal quanto coletivo. Nos discursos coletados de imigrantes brasileiros, observamos sentidos que remetiam a experiências de vida e de consumo cultural, fortemente marcadas pela intensa negociação de sentidos de identidade brasileira em contexto estrangeiro.
Jornalismo na era dos testemunhos: remediação, reconfiguração ou permanências históricas?
Authors: Gerk Cristine , Barbosa Marialva Carlos 
Published: October 2019

Numa era de valorização de testemunhos, este artigo busca discutir as mudanças pelas quais passa o jornalismo e as relações dessas transformações com a memória. Em uma perspectiva processual, visualizamos as transformações do jornalismo no cenário contemporâneo a partir da lógica das rupturas e permanências que aderem a novos regimes de midialidades, decorrentes das reconfigurações tecnológicas adotadas pelos meios de comunicação ao longo da história.
ÜNİVERSİTE ÖĞRENCİLERİNDE FLÖRT ŞİDDETİ SIKLIĞI ve ETKİLEYEN ETMENLER - FREQUENCY and EFFECTING FACTORS of DATING VIOLENCE in STUDENTS of a UNIVERSITY
Authors: Akış Nalan , Haşıl Korkmaz Nimet , Taneri Petek Eylül , Özkaya Güven , Güney Ediz 
Published: October 2019

Çalışmanın amacı bir üniversitenin
iki ayrı fakültesinde okuyan üniversite öğrencilerindeki flört şiddeti
prevalanslarının saptanması ve etkileyen etmenlerin karşılaştırılmasıdır.
Kesitsel tipte olan bu çalışma, araştırmacılar tarafından oluşturulan anketler
aracılığıyla, 1 Mayıs- 30 Haziran 2017 tarihleri arasında
gerçekleştirilmiştir. Basit rastgele
örnekleme yöntemiyle 435 öğrenci seçilmiştir. Frekans analizleri, ki-kare ve
lojistik regresyon analizleri uygulanmıştır. Toplam 424 öğrenci araştırmaya
katılmış ve bunların %21.4’ünde flört şiddeti maruziyeti saptanmıştır. Cinsiyet
ve fakülte ile flört şiddeti arasında anlamlı bir ilişki saptanmazken;
çocuklukta aile içi şiddete maruz kalanlarda 2.7 kat (%95GA=1.4-5.5; p=0.003)
daha fazla maruziyet görülmüştür. Flört
şiddetini engellemek için aile içi şiddeti önlemeye yönelik etkin politikalar
uygulanmalı ve üniversite öğrencilerine yönelik danışmanlık ve eğitim
hizmetleri verilmelidir.
Educação do corpo, dor, sacrifício: um estudo com competidores de atletismo
Authors: Carreirão Gonçalves Michelle , Fernandez Vaz Alexandre 
Published: October 2019

Resumen
Uma das questões que desafiam a compreensão do esporte contemporâneo diz respeito às relações do atleta com seu próprio corpo, ou, dito de outra forma, como ele significa a necessária instrumentalização corporal, exigência tanto do treinamento, quanto da performance competitiva. O atletismo aparece como uma das modalidades em que essas relações se colocam com maior clareza, talvez porque lhe seja menos frequente o momento de jogo presente em esportes coletivos. Nesse contexto, apresentamos os resultados de uma pesquisa com atletas adultos semi-profissionais de atletismo, com foco em técnicas e sacrifícios que permeiam o treinamento esportivo. Foram feitas observações sistemáticas de treinamentos e competições de atletas de pista, bem como entrevistas narrativas com protagonistas da modalidade. A análise específica de modalidades pode nos mostrar singularidades que se referem às formas de subjetivação contemporâneas. É este o caso, conforme mostram nossos resultados: (1) uma importante relação entre a técnica e a organização do sofrimento nos marcos do treinamento esportivo, com vistas ao disciplinamento, domínio e potencialização do corpo; (2) uma normalização da dor, entendida como parte fundamental da vitalidade atlética; (3) uma relação ambígua com as lesões – que deixam de ser um problema para tornar-se motivo de orgulho, criando um culto às lesões, uma celebração do sofrimento –,bem como com a ingestão de medicamentos para lidar com a dor – representando uma luta entre naturalidade e artificialidade.
Impacto de la tutoría presencial y virtual en el desempeño académico de alumnos universitarios
Authors: García López Ramona Imelda , Cuevas Salazar Omar , Vales García Javier José , Cruz Medina Isidro Roberto 
Published: October 2019

Con la incorporación de las tecnologías de la información y la comunicación a la educación, los programas de tutorías en las universidades se han diversificado con la modalidad virtual. Esta diversificación ha permitido incrementar la cobertura y ofrecer el beneficio de los contenidos y actividades a los estudiantes que, por motivos de horario y distancia, no pueden inscribirse en la modalidad presencial de las tutorías.
Sin embargo, hasta el momento se desconoce si existe un efecto de la tutoría virtual en el aprovechamiento académico de los estudiantes y cómo resulta éste, comparado con la tutoría presencial. Es por ello que el objetivo de esta investigación fue, precisamente, determinar el impacto, posiblemente diferencial, que los programas de tutoría presencial y virtual de una universidad mexicana tienen sobre el desempeño académico de sus estudiantes.
Los resultados de este estudio muestran un impacto positivo, un incremento significativo en los promedios de calificaciones y en los porcentajes de aprobación en el semestre en donde los estudiantes cursaron tutorías en cualquiera de sus modalidades, presencial o virtual. Se encontró también que en el semestre en el que se cursaron tutorías, el promedio de las calificaciones de los alumnos que cursan tutoría virtual, fue mayor que el de los alumnos que cursaron tutoría presencial.
Alfabetismos digitales para una escuela multicultural
Authors: Moreno Herrero Isidro , Gonzalo Muñoz Valentín 
Published: October 2019

En este artículo se plantea una propuesta que se enmarca en una de las líneas de acción de nuestro actual proyecto de investigación: la adopción de medidas de apoyo lingüístico para favorecer la incorporación del alumnado alófono al currículo ordinario y, más concretamente, el uso de las TIC como herramientas alfabetizadoras, especialmente las aplicaciones de la Web 2.0. Se hace un repaso sucinto sobre el contexto social y digital en el que está inmersa la escuela y se apuesta por un modelo de multialfabetización que dé respuesta a la diversidad lingüística y cultural de los centros.
Constituye, asimismo, un avance de uno de los aspectos del Proyecto de Investigación orientado a la búsqueda de alternativas inclusivas, generadas y asumidas por toda la comunidad educativa, que transformen la estructura relacional y organizativa de los centros y no supediten la integración y progreso escolar del alumnado alófono exclusivamente a la adquisición de competencia lingüística en español, solo accesible a medio y largo plazo como demuestra la investigación.
[Reseña] Municipio y Educación: Reflexiones, experiencias y desafíos
Authors: Vitolo Guzmán Olga 
Published: October 2019

Joaquín Gairín y Sebastián Sánchez (eds.) Municipio y Educación: Reflexiones, experiencias y desafíos. 2011. 276 págs. isbn: 978-956-8986-02-5.El texto recoge, con una gran riqueza y rigor, consideraciones, prácticas y nuevos retos en el ámbito de la mejora de la calidad de los aprendizajes de los alumnos...