bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling of Geochemical Reactions Occurring in the Gyda Field Under Cold-Seawater Injection on the Basis of Produced-Water-Chemistry Data and Implications for Scale Management
Authors: Hu Yisheng , Mackay Eric
Published: February 2017

The evidence from the produced-brine chemistry suggests that the Gyda field has experienced a variety of geochemical reactions caused by the high temperature and initial calcium (Ca) concentration, and so it is worth reviewing the produced-water data set and studying what in-situ geochemical reactions may be taking place.

Produced-brine-chemistry data from 16 wells in the Gyda field are plotted and analyzed in combination with general geological information and the reservoir description. A 1D reactive-transport model is developed to identify the possible geochemical reactions occurring within the reservoir triggered by seawater injection, and then extended with the inclusion of thermal modeling and also to be a 2D vertical-cross-section model.

Three possible classes of formation-water composition in different regions of the Gyda field have been identified by analysis of the produced-water data set. Anhydrite and barite precipitation are the two dominant mineral reactions taking place deep within the reservoir. Magnesium (Mg) stripping may be a result of multicomponent ion exchange (MIE), dolomite precipitation, or a combination of both. Reservoir temperature is lowered during cold-water injection. The solubility of anhydrite increases at lower temperature, and anhydrite will gradually dissolve in response to the movement of the temperature front, which is much slower than the formation/injection-water mixing front. The extent of mineral precipitation within the reservoir can be reduced by the heterogeneity; the modeling shows that the extent of ion stripping caused by mineral reactions in the reservoir is greatest when simulating a single uniform layer. Brine mixing and the occurrence of geochemical reactions caused by vertical mixing are not observable, even when assigning a high vertical permeability in a heterogeneous model.

Thermal modeling is included to evaluate the effect of nonisothermal processes and heat transport on the geochemical reactions, especially the anhydrite mineral reaction. We have investigated how the difference in horizontal permeability in the two layers affects brine mixing of formation and injection water and geochemical reactions.
FORMAS DE ENFRENTAMENTO E SAÚDE DO ENFERMEIRO DIANTE DE ESTRESSORES OCUPACIONAIS
Authors: Milagres Clarice Santana , Lodi Jucilene Casati
Published: February 2017

Cargas de trabalho são traduzidas como estressores ocupacionais, tensões e problemas advindos do exercício de uma atividade profissional. O trabalho de enfermagem é exercido em longas jornadas e em turnos, com rodízio e multiplicidade de tarefas, marcado pela repetição e monotonia, esforço físico, posições ergonomicamente inviáveis, ansiedade, estresse e controle de chefias, propiciando o desencadear de doenças e acidentes. A sobrecarga de trabalho pode trazer por si só, uma desorganização dos serviços de saúde prestados, uma insatisfação do profissional cuidador e consequentemente, uma diminuição da qualidade do cuidado prestado. O trabalho tem por objetivo identificar estressores ocupacionais do enfermeiro na execução de suas tarefas e estratégias de enfrentamento desse profissional. Como resultado, verificou-se que o trabalho do enfermeiro é exercido em extensos períodos, comprometendo sutilmente as funções cognitivas e humor. Também foi verificado uma maior prevalência de ansiedade e depressão nestes profissionais causados pelo estresse ocupacional.  Desgastes físicos também foram observados e podem, no progredir dos mesmos, desencadear doenças. Pode-se concluir que o controle excessivo no qual os enfermeiros internalizam em suas funções devido a elevada responsabilidade do seu cotidiano profissional evidencia um maior nível de ansiedade e tensão.
INCONSTITUCIONALIDADE E ILEGALIDADE DA INCLUSÃO DE MERCADORIAS, BENS OU SERVIÇOS NO REGIME DE ICMS-ST POR ATOS INFRALEGAIS
Authors: Melo Igor Frizera de , Mendonça Marcelo Otávio De Albuquerque B. , Felicio Raphael Maleque
Published: February 2017

Segundo o art. 6º, da LC nº 87/1996, a lei estadual poderá atribuir a contribuinte do ICMS ou a depositário a qualquer título a responsabilidade pelo seu pagamento, hipótese em que assumirá a condição de substituto tributário. Acontece que, em atenção ao princípio da tipicidade fechada, previsto no art. 150, I, da CRFB/88 e nos arts. 3º e 97, do CTN, somente lei formal, elaborada pelo Poder Legislativo, pode definir os sujeitos de alcance da referida norma, sendo inconstitucional a delegação dessa competência ao Chefe do Poder Executivo Estadual.
Fresh Versus Frozen Testicular Sperm Samples in Microdissection Testicular Sperm Extraction Intracytoplasmic Sperm Injection Treatment
Authors: Hatırnaz Şafak , Başaranoğlu Serdar , Hatırnaz Ebru , Pektaş Mine Kanat
Published: February 2017

Objective: The present study aims to compare the clinical outcomes of fresh versus frozen testicular samples in patients with non-obstructive azoospermia who would undergo intracytoplasmic sperm injection procedure.Study Design: This is a retrospective review of 541 patients with non-obstructive azoospermia who consecutively underwent microdissection testicular sperm injection and intracytoplasmic sperm injection between January 2010 and October 2014.Results: A total of 4896 mature oocytes were collected from the partners of azoospermic men and 1894 sperms were retrieved by microdissection testicular sperm procedures. About 1036 fresh sperms were used to perform intracytoplasmic sperm injection in 296 men with non-obstructive azoospermia whereas 858 in 245 azoospermic men. Approximately 1228 embryos were obtained after intracytoplasmic sperm injection and 1080 embryos were transferred. After embryo transfer, 146 clinical pregnancies occurred and 125 pregnancies ended up with live birth. The fertilization, implantation, clinical pregnancy and live birth rates were respectively 44.6%, 33.4%, 28.0% and 24.7% for 296 fresh microdissection testicular sperm cycles. On the other hand, the fertilization, implantation, clinical pregnancy and live birth rates were respectively 46.5%, 32.7%, 25.7% and 21.2% for 245 frozen microdissection testicular sperm cycles. There was no statistically significant difference between the fresh and frozen microdissection testicular sperm injection cycles in aspect of fertilization, implantation, clinical pregnancy and liver birth rates (p=0.125, p=0.194, p=0.196 and p=0.182).Conclusion: The utilization of fresh and frozen sperms in microdissection testicular sperm - intracytoplasmic sperm injection cycles has similar clinical outcomes. The use of frozen sperms obtained by testicular sperm can be considered as an efficient and safe approach for avoiding unnecessary ovarian hyperstimulation and repetitious interventions on testicular tissues.
Considering energy efficiency in filtration of engineering nanoparticles
Authors: Arkhangelsky Elizabeth , Levitsky Inna , Gitis Vitaly
Published: February 2017

Engineering nanoparticles (ENPs) are an integral part of consumer products. Released to the atmosphere or disposed to sewage, ENPs quickly penetrate to surface and ground water sources. An absence of a dedicated ENP-retaining water treatment strategy imposes a potential health threat on drinking water consumers. The threat is met by gearing up an upgrade of treatment systems towards membrane filtration that provides a better barrier to ENP penetration at higher energy costs. The current study compares the energy demand of granular and membrane filtrations, with the retention efficiency of inorganic and organic ENPs. Dedicated experiments with gold and silver nanoparticles, dyed viruses, proteins, polysaccharides, and plasmid DNA showed that the energy demand increases from slow to river bank to rapid sand filtration, and to membrane ultrafiltration (UF). The UF alone consumes on average two times more energy than the entire coagulation–flocculation–sedimentation–sand filtration tray. The differences in retention efficiency however are much less pronounced. The traditional retention tray requires 0.4–0.45 kWh per m3 of effluent (kWh/m3) to provide between 90% and 99% (1 and 2 logs) ENP retention; 1 kWh/m3 on average is needed to secure the retention of 99.9% (3 log) ENPs by UF.
Examining the effects of urban agglomeration polders on flood events in Qinhuai River basin, China with HEC-HMS model
Authors: Gao Yuqin , Yuan Yu , Wang Huaizhi , Schmidt Arthur R. , Wang Kexuan , Ye Liu
Published: February 2017

The urban agglomeration polders type of flood control pattern is a general flood control pattern in the eastern plain area and some of the secondary river basins in China. A HEC-HMS model of Qinhuai River basin based on the flood control pattern was established for simulating basin runoff, examining the impact of urban agglomeration polders on flood events, and estimating the effects of urbanization on hydrological processes of the urban agglomeration polders in Qinhuai River basin. The results indicate that the urban agglomeration polders could increase the peak flow and flood volume. The smaller the scale of the flood, the more significant the influence of the polder was to the flood volume. The distribution of the city circle polder has no obvious impact on the flood volume, but has effect on the peak flow. The closer the polder is to basin output, the smaller the influence it has on peak flows. As the level of urbanization gradually improving of city circle polder, flood volumes and peak flows gradually increase compared to those with the current level of urbanization (the impervious rate was 20%). The potential change in flood volume and peak flow with increasing impervious rate shows a linear relationship.
A Ciência serve, antes de tudo, para garantir a qualidade de vida
Authors: Andrades Filho Clódis De Oliveira
Published: February 2017

O impacto e a inserção social da Ciência, Tecnologia e Inovação (CTI) é um tema rico e que carece de avanços nos estudos e em difusão, sobretudo no
Brasil. A Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) começa a se debruçar de forma mais aprofundada sobre tais questões a partir da avaliação da inserção social dos Programas de Pós-Graduação. Embora, já na década de 1970, autores como Bertrand Russell, por exemplo na obra “O Impacto da Ciência na Sociedade”, discutissem a inserção social da Ciência, o contexto atual provoca reflexões e, inclusive, repercussões oriundas de antigas e novas políticas públicas em CTI. Assim, enquanto para alguns a importância da Ciência no desenvolvimento pareça ser óbvia, para outros há a necessidade de que isso seja constantemente provado. De outra prova as ações em CTI ficam sob o risco de serem menosprezadas, sobretudo em alguns países como o Brasil, o que fatalmente irá ampliar as desigualdades sociais e econômicas. O conhecimento – bem como o reconhecimento da sua importância – dominado somente por um grupo restrito é um risco para todos.
SUPERAÇÃO IN VITRO DA DORMÊNCIA DE EMBRIÕES DE PEREIRA ORIUNDOS DE HIBRIDAÇÕES
Authors: LIMA Claudia Simone Madruga , ROSA Gabriela Gerhardt da , TOMAZ Zeni Fonseca Pinto , SCHUCH Marcia Wullf , RUFATO Andrea De Rossi
Published: February 2017

Objetivou-se neste verificar a influência de diferentes meios de cultura de embriões oriundos de hibridação na superação in vitro da dormência de porta-enxertos de pereira.  Embriões foram retirados de sementes oriundas de hibridações controladas e inoculados nos meios de cultivo: MS; MS/2; QL e QL/2, mantidos em sala de crescimento a 25±2ºC e fotoperíodo de 16 horas. O delineamento experimental foi inteiramente casualizado com quatro repetições e três tratamento (hibridações), sendo que cada repetição constituiu-se de um frasco, com cinco embriões cada. Aos 60 dias de cultivo, o material foi avaliado, os dados foram submetidos à análise de variância e as médias dos tratamentos comparadas estatisticamente pelo teste de Tuckey (α=0,05). Houve interação entre os fatores (meios de cultura e hibridações) para todas as variáveis respostas analisadas.  A maior percentagem de germinação (53,49%),  foi obtida na associação do meio de cultura QL/2  com embriões oriundos do tratamento 2.  O maior número e  comprimento de  brotações  foi verificado  na  combinação  de  embriões  do

tratamento 1 cultivadas em meio QL e o  maior crescimento radicular foi observado no cultivo realizado em meio MS com os embriões oriundos dos tratamentos 1 e 2. O meio

QL/2 proporcionou o maior número de embriões de porta-enxertos de pereira germinados. Entretanto o meio QL completo é adequado é o mais adequado para multiplicação.
Editorial
Authors: Sahagún Navarro Marta
Published: February 2017

Editorial
Bandera
Authors: Álvarez Carlos Arturo
Published: February 2017

Bandera
Caracterización clínica de infecciones de vías urinarias producidas por enterobacterias productoras de betalactamasas de espectro extendido en Duitama (Colombia), durante 2010-2015
Authors: Méndez Fandiño Yardany Rafael , Caicedo Ochoa Edgar Yaset , Guio Guerra Santiago Alejando , Fernández Niño Daniel Sebastián , Urrutia Gómez Jorge Andrés , Prieto Andrea Cecilia
Published: February 2017

Objetivo: Caracterizar las infecciones de vías urinarias (IVU) producidas por enterobacterias productoras de betalactamasas de espectro extendido (BLEE) en Duitama (Colombia) durante 2010-2015.Metodología: Se realizó un estudio descriptivo en 2 instituciones prestadoras de salud a partir de los aislamientos de patógenos BLEE asociados a IVU. Se tomaron variables sociodemográficas, comorbilidades, hospitalizaciones por IVU en el último año, agentes aislados, tratamiento empírico y dirigido, y respuesta clínica. Resultados: Se obtuvo un registro de 169 pacientes, con edad promedio de 66,01 ± 19,19; el 55,62% eran mayores de 65 años; el 59,2% eran de género femenino y el 73,6% provenían del área urbana. Las comorbilidades más frecuentes fueron enfermedad pulmonar obstructiva crónica (26%), diabetes (24,9%) y enfermedad renal crónica (16%), con un índice de Charlson de 4,43 ± 2,61. El 61,6% había sido hospitalizado en el último año a causa de IVU. Los agentes aislados más comunes fueron Escherichia coli (94,7%) y Klebsiella spp. (2,4%). Los tratamientos empíricos usados fueron ampicilina/sulbactam (15%), ciprofloxacino (29,6%) y nitrofurantoína (10,7%). Frente al tratamiento dirigido, el 36,7% no recibió ningún escalonamiento, el 32% fue tratado con ertapenem y el 8,9% con piperacilina/tazobactam. La mortalidad fue del 5,9% y la estancia hospitalaria fue en promedio de 7,24 ± 7,43 días.Conclusión: Los datos regionales son similares a los datos mundiales. Frente al tratamiento empírico se debe realizar una revaloración, ya que las guías actuales no recomiendan el uso de ciprofloxacino. También se debe hacer mejor seguimiento a las BLEE, ya que hay fallas en cuanto al tratamiento dirigido en gran porcentaje de las cepas.
Amoxicilina como posible causante de meningitis aséptica: presentación de un caso y revisión de la literatura
Authors: Padilla Garrido Juan Jacobo , Tejada Marín Jorge Wilmar , Vélez Londoño Juan Diego , García Goez José Fernando
Published: February 2017

Se presenta el caso de un paciente de 71 años, quien desarrolló cefalea en 2 ocasiones relacionada con la exposición a amoxicilina. Se documentó mediante punción lumbar una inflamación linfocítica con cultivos negativos; por tanto, se enfocó como meningitis aséptica y en el contexto clínico de posible origen medicamentoso. Este se ha considerado un diagnóstico de exclusión. Los hallazgos a nivel del líquido cefalorraquídeo son variables; los síntomas y signos de irritación meníngea son menos predominantes. Es importante tener presente este diagnóstico diferencial al haber descartado otras etiologías. Suspender el medicamento sospechoso y realizar un seguimiento estricto del paciente puede evitar que sea abordado mediante procedimientos diagnósticos y tratamientos infructuosos y, en algunos casos, perjudiciales. Dado que es un medicamento de uso frecuente y para múltiples indicaciones, es importante tener presente este efecto colateral.
CIANO QUIZ: UM JOGO DIGITAL SOBRE CIANOBACTÉRIAS COMO INTRUMENTO PARA A EDUCAÇÃO AMBIENTAL NO ENSINO MÉDIO
Authors: Nunes Poliana Rodrigues , Chaves Andréa Carla Leite
Published: February 2017

O presente artigo descreve o processo de elaboração, aplicação e avaliação de um jogo pedagógico digital – Ciano Quiz – destinado aos alunos do ensino médio. Seu objetivo é contribuir para uma abordagem lúdica e contextualizada dos impactos no meio ambiente e na saúde humana da contaminação das águas com cianobactérias. Para a elaboração deste recurso didático, levou-se em consideração a relevância da contextualização e da transversalidade na educação ambiental, sob os ditames dos Parâmetros Curriculares Nacionais (PCNs), e o uso de jogos e de recursos multimídia interativos como facilitadores do processo de ensino-aprendizagem. Além do jogo, foi elaborado um tutorial para os professores, visando a facilitar o uso do jogo de forma construtiva e produtiva no contexto escolar. Em seguida à aplicação do jogo para alunos do ensino médio, foram avaliados aspectos pedagógicos do jogo e a aprendizagem sobre a temática trabalhada no jogo. A avaliação pedagógica revelou que os alunos consideraram que o Ciano Quiz: representa uma possibilidade de participação em uma atividade que foge da metodologia tradicional; é motivador, e traz um assunto interessante que tem relação com seu cotidiano; faz pensar sobre ações do dia-a-dia e colabora para que haja mudanças de atitudes na vida. A avaliação da aprendizagem mostrou que o jogo favoreceu a assimilação de conhecimentos específicos sobre a temática abordada. Espera-se que os recursos didáticos apresentados neste trabalho sejam úteis para aumentar o interesse dos professores para o uso de recursos digitais com temáticas relacionadas ao meio ambiente, especialmente aquelas que envolvam o problema da floração de cianobactérias e sua importância para a preservação de recursos hídricos. Finalmente, espera-se que a utilização do jogo Ciano Quiz, contribua para o aprimoramento dos conhecimentos e para o desenvolvimento de habilidades e competências nas áreas da educação ambiental e da saúde, aspectos importantes para a construção da cidadania.
AS EXPEDIÇÕES CIENTÍFICAS NO ESPÍRITO SANTO E SUAS RELAÇÕES COM A HISTÓRIA DA CIÊNCIA – ABORDAGENS PRELIMINARES
Authors: Campos Carlos Roberto , Silva Marcelo Scabelo
Published: February 2017

Um aspecto pouco estudado pela historiografia diz respeito ao papel que desempenharam as expedições científicas para a construção da ciência. Essas expedições deram uma visão das capitanias brasileiras à Europa e ajudaram a construir as representações sociais  da terra e da gente pelos europeus, ao mesmo tempo em que criaram uma noção acerca do imaginário e como as pessoas trabalhavam para domesticar a terra e transformá-la conforme suas necessidades. Observando a ciência de uma perspectiva sócio-histórica, contextualizada, este artigo busca apresentar um painel das expedições científicas empreendidas à capitania do Espírito Santo desde o século XVI até o final do Século XIX e, nesse recorte, destacar seus motivos ideológicos e científicos, elucidando as razões que motivaram tais expedições. Após análise das viagens e narrativas produzidas, a constatação foi que a História da ciência capixaba fundou-se a partir do olhar europeu, a qual exerceu suas marcas na constituição da diversidade cultural e, sobretudo, no modo de vida das gentes da colônia.
Possibilities of assessing trace metal pollution using Betula pendula Roth. leaf and bark - experience in Serbia
Authors: Pavlovic Dragana , Pavlovic Marija , Markovic Milica , Karadzic Branko , Kostic Olga , Jaric Snezana , Mitrovic Miroslava , Grzetic Ivan , Pavlovic Pavle
Published: February 2017

In this study, both seasonal and spatial variations in trace metal uptake, as well as concentration of photosynthetic pigments in Silver birch (Betula pendula Roth.) trees in five urban parks in Pancevo, Smederevo, Obrenovac and Belgrade (Serbia) affected by different anthropogenic activities were studied. The characteristics of soil were assessed in terms of texture, pH and trace element content. Concentrations of boron, strontium and zinc in both leaves and bark showed an increasing temporal trend, however, copper showed an opposite seasonal trend. A higher accumulation of trace elements was noticed in leaves compared to bark. The obtained results for photosynthetic pigments showed low sensitivity of birch to B, Cu, Sr and Zn contamination, indicating that birch tolerates pollution and climate stress by increasing the amount of pigments. Analysis of the effects on soil chemistry of trace element accumulation in plant tissues proved that soil chemistry poorly explains the variability of elements in bark (27.6 %) compared to leaves (82.99 %). Discriminant analysis showed that Belgrade and Smederevo are clearly separated from the other three sites.
In vitro antimicrobial activity and cytotoxicity of nickel(II) complexes with different diamine ligands
Authors: Draskovic Nenad , Glisic Biljana , Vojnovic Sandra , Nikodinovic-Runic Jasmina , Djuran Milos
Published: February 2017

Three diamines, 1,3-propanediamine (1,3-pd), 2,2-dimethyl-1,3-propanediamine (2,2-diMe-1,3-pd) and (?)-1,3-pentanediamine (1,3-pnd), were used for the synthesis of nickel(II) complexes 1?3, respectively, of the general formula [Ni(L)2(H2O)2]Cl2. The stoichiometries of the complexes were confirmed by elemental microanalysis, and their structures were elucidated by spectroscopic (UV?Vis and IR) and molar conductivity measurements. The complexes 1?3, along with NiCl2?6H2O and the diamine ligands, were evaluated against a panel of microbial strains that are associated with skin, wound, urinary tract and nosocomial infections. The obtained results revealed no significant activity of 1?3 against the investigated bacterial strains. On the other hand, they showed good antifungal activity against pathogenic Candida strains, with minimum inhibitory concentration (MIC) values in the range from 15.6 to 62.5 ?g mL-1. The best anti-Candida activity was observed for complex 2 against C. parapsilosis, while the least susceptible to the effect of the complexes was C. krusei. The antiproliferative effect on normal human lung fibroblast cell line MRC-5 was also evaluated in order to determine the therapeutic potential of nickel(II) complexes 1?3. These complexes showed lower negative effects on the viability of the MRC-5 cell line than the clinically used nystatin and comparable selectivity indexes to that of this antifungal drug.
ISOLASI DAN KARAKTERISASI ENZIM b-1,3-ENDOGLUKANASE DARI TANAMAN KUBIS (Brassica oleracea cv. Capitata L.)
Authors: Manuhara Y. Sri
Published: February 2017

Isolation and characterization of β-1,3-endoglucanase from cabbage (Brassica oleracea var. capitata L.) have been done. It showed 40° C of optimum temperature, and optimum pH is 7. After the purification with hydrophobic interaction chromatography and ion exchange chromatography, it’s activity was increased. Based on SDS-PAGE analysis, β-1,3-endoglucanase have molecular weight around 48 kD. Antifungal activity of β-1,3-endoglukanase show that it has best inhibition zone on Fusarium solanii at extract from ion exchange chromatography.
THE DIVERSITY OF TERRESTRIAL ARACEAE IN MT. WATUWILA COMPLEX, SOUTH-EAST OF SULAWESI
Authors: Erlinawati Ina
Published: February 2017

The arums comprise the family of Araceae, including the numerous aroids subfamily, monocotyledonous flowering plants, in which flowers are borne on a type of inflorescence called a spadix. The diversity of terrestrial Araceae in Sulawesi is very poorly documented and understood and remains critically threatened. The aims of this study were to understand the diversity of terrestrial Araceae on Mount Watuwila Complex and to add the number specimen collection in Herbarium Bogoriense. The exploration was conducted by used exploring method, including collection, identification and description. The exploration on Mount Watuwila Complex (170–800 m alt.), May 7–29, 2008 was got 22 number collections of Araceae, consist of 12 numbers of terrestrial Araceae, 10 species, those are Aglaonema simplex Bl., Alocasia macrorrhizos (L.) G. Don, Alocasia suhirmaniana Yuzammi & A. Hay, Colocasia esculenta (L.) Schott, Homalomena spp. (3 species), Schismatoglottis calyptrata (Roxb.) Zoll. & Moritzi, S. plurivenia Alderw and Spathiphyllum commutatum Schott. Schismatoglottis calyptrata (Roxb.) Zoll. & Moritzi is dominant species and Alocasia suhirmaniana Yuzammi & A. Hay is endemic species. The descriptions of each species were made.
Assessment of the Water Quality of Jatiluhur Reservoir, the Downstream of Citarum Cascade River, Using Selected Physico-Chemical Parameters
Authors: Corsita Lieza , Arwin Arwin , Muntalif Barti Setiani , Salami Indah Rachmatiah
Published: February 2017

Physico-chemistry and biological data were investigated  from  October 2010 until April 2011 of Jatiluhur reservoir. A total of six sampling stations were selected for this study. The discharge and hidrological data were obtained from Perum Jasa Tirta II Jatiluhur. The results showed that the hydrological regime in the reservoir Jatiluhur was affected by global phenomenon La Nina events in 2010 and early in 2011. Stream flows were determined during sampling to range from 78  to 482.5 m3/s. The water quality findings were as follows: pH (6.93-8.81), temperature (26.37-30.6°C), dissolved oxygen (0.733-5.2 mg/l), conductivity (2.45-233µmhos/cm), COD (7.36-96.9 mg/l), turbidity (4.063-65.6 NTU), total phosphate (0.002-0.324 mg/l), total nitrogen (0.99-5.96 mg/l), chlorophyl (2.237-43.37 mg/m3), visibility (30-160 cm). The eutrophication was pronounced at Jatiluhur reservoir. Canonical Correspendence Analysis found that some water quality parameters correlated positively with the discharge and the water level.
Pengaruh Nozzle Terhadap Aspek Hidrodinamika Kinerja Kolom Gelembung Pancaran
Authors: Nugroho Didiek Hari , Adisalamun Adisalamun , Machdar Izarul
Published: February 2017

Kolom gelembung pancaran merupakan salah satu alat perpindahan massa antara fasa gas dan cair. Penelitian ini bermaksud untuk mempelajari pengaruh nozzle terhadap aspek hidrodinamika antara lain: kedalaman penetrasi gelembung (Z), holdup gas (eg), dan laju alir volumetrik gas entrainment (Ql) yang terjadi dalam kolom gelembung pancaran. Variabel proses yang dipelajari antara lain laju alir volumetrik cairan (10-50 L/menit), ukuran diameter nozzle (0,008-0,0127 m), dan tinggi nozzle (0,125-0,25 m). Hasil penelitian memperlihatkan bahwa ukuran diameter nozzle semakin kecil dan laju alir volumetrik cairan yang semakin besar menghasikan laju alir volumetrik gas entrainment, holdup gas, dan kedalaman penetrasi gelembung yang semakin besar.
Sintesis dan Karakterisasi Membran Poliuretan dari Minyak Biji Karet dan Heksametilen-1,6-diisosianat
Authors: Nurman Salfauqi , Marlina Marlina , Saiful Saiful , Saleha Sitti
Published: February 2017

Minyak biji karet dapat dimanfaatkan untuk pembuatan membran poliuretan. Minyak biji karet memiliki bilangan hidroksi 40,33 mgKOH/g dan bilangan iod 154,05 gI2/g. Sintesis membran poliuretan menggunakan metode ikatan silang. Ikatan silang terbentuk dengan mereaksikan minyak biji karet sebagai sumber gugus -OH dengan heksametilen-1,6-diisosianat sebagai sumber gugus -NCO.  Membran poliuretan yang optimum dihasilkan pada komposisi 4,55:5 (g/g) memiliki sifat homogen, kering, elastis, berwarna kuning kecoklatan, bergelombang, fluks 0,544 L/m2.h.bar dan faktor rejeksi 100%. Hasil karakterisasi membran menunjukkan terbentuknya ikatan uretan pada bilangan gelombang 3480 cm-1, struktur morfologi membran padat, memiliki dua tahap dekomposisi pada 210 oC dan 392 oC, titik transisi gelas 65 oC, kekuatan tarik 1,03 kgf/mm2 dan elongasi 497,14%. Dari hasil karakterisasi membran poliuretan, membran tersebut dapat digolongkan pada tipe membran reverse osmosis.
Pengaruh Rasio Biji terhadap Pelarut dan Waktu Ekstraksi terhadap Yield dan Kualitas Minyak Biji Alpukat
Authors: Erfiza Novia Mehra , Moulana Ryan , Wulandari Desy , Satriana Satriana , Supardan Muhammad Dani
Published: February 2017

Penelitian ini bertujuan untuk mengetahui pengaruh rasio biji alpukat terhadap pelarut dan waktu ekstraksi pada proses ekstraksi minyak biji alpukat menggunakan pelarut n-heksan. Penelitian menggunakan rancangan acak kelompok dengan pola faktorial terdiri atas 2 faktor yang masing-masing terdiri dari 3 taraf dengan 3 kali ulangan. Faktor pertama adalah rasio biji alpukat terhadap pelarut yaitu 1:5, 1:10 dan 1:15 (g/mL), sedangkan faktor kedua adalah waktu ekstraksi yaitu 120, 150, dan 180 menit. Hasil sidik ragam menunjukkan bahwa perlakuan rasio bahan terhadap pelarut tidak berpengaruh nyata (P0,05) terhadap yield dan bilangan asam. Sementara itu, perlakuan waktu ekstraksi berpengaruh nyata (P≤0,05) terhadap yield minyak biji alpukat, dan berpengaruh tidak nyata (P0,05) terhadap bilangan asam. Yield tertinggi (2,23%) diperoleh dari sampel minyak pada perlakuan rasio bubuk biji alpukat terhadap pelarut 1:5 dan waktu ekstraksi 120 menit dengan aktivitas antioksidan 62,87%, serta nilai viskositas dan densitas masing-masing yaitu 13,5 cP dan 0,96 g/mL. Asam lemak oleat merupakan komponen terbesar dalam minyak biji alpukat.
Aktivitas Antioksidan Ekstrak Etanol Daun Ubi Jalar Ungu (Ipomea batatas L.) Hasil Budidaya Daerah Saree Aceh Besar
Authors: Sulastri Sulastri , Erlidawati Erlidawati , Syahrial Syahrial , Nazar Muhammad , Andayani Thursina
Published: February 2017

This research was aimed to investigate the antioxidant activity of purple sweet potato leaves cultivated in Saree, Aceh Besar. The study was conducted in two stages. The first stage included sampel preparation, phytochemical test, λ max determination, testing of antioxidant activity by reducing power method, and TLC analysis. In stage 2 purification using column chromatography, phytochemical test, and antioxidant activity test were performed. The sample was dissolved by using 70% ethanol and 1.5 N HCl with a ratio of 85:15 (v/v). Phytochemical test results showed that the sample consisted of not only flavonoids but also tannins. The Rf value for both sample and standard are respectively 0.55 and 0.61 with absorbance value of 0.826 and 0.845. The sample was then purified using column chromatography and 25 fractions were grouped based on the color intensity abbreviated as FA, FB and FC. Photochemical test was then conducted to examine the purity of obtained fraction and FB was found to be relatively purer than other fractions. Reducing power test of FB with variation of weight 10 mg, 20 mg, 30 mg, 40 mg, and 50 mg gave the percentage inhibition 64.1, 6.7, 67.9, 70.3 and 73.6, respectively, while the percentage value of α- tocopherol at simmilar weight variation are 32.1, 36.7, 43.5 and 50.2%. From the result obtained, it can be concluded that the antioxidant activity of ethanol extract of thick purple sweet potato leaves is higher than α-tocopherol.Keywords: antioxidant activity, purple sweet potato leaves, reducing power
Produksi Ramnolipid dan Polihidroksialkanoat secara Simultan dari Produk Samping Industri Biodiesel dengan Bahan Baku CPO
Authors: Nurani Darti , Marsudi Sidik
Published: February 2017

Produksi bioplastik polyhydroxyalkanoates (PHA) oleh bakteri menghadapi masalah biaya produksi yang tinggi. Masalah yang sama juga terjadi pada produksi ramnolipid biosurfaktan. Strategi baru telah diusulkan untuk mengurangi biaya produksi PHA, yaitu sel pertama diarahkan untuk menghasilkan produk ekstraseluler yaitu ramnolipid, lalu sel tersebut digunakan kembali untuk menghasilkan produk intrasleluer, yaitu PHA. Penelitian ini dilakukan untuk mempelajari produksi poli-hidroksialkanoat (PHA) dan ramnolipid secara simultan dari sumber karbon yang relatif murah menggunakan teknik batch kultur. Dalam penelitian ini, produk samping industri biodiesel dari minyak sawit mentah (CPO) digunakan sebagai sumber karbon dan sebagai pembanding digunakan minyak sawit. Hasil penelitian menunjukkan bahwa penggunaan sumber karbon produk samping CPO menghasilkan konsentrasi maksimum ramnolipid dan PHA masing-masing 80 mg/l dan 0,15 mg/l, yang dicapai pada konsentrasi sumber karbon 25 g/l dan waktu kultivasi 24 jam.
Identificação e sistematização de diretrizes para o design de embalagens sustentáveis
Authors: Zavadil Priscila , Silva Régio Pierre da
Published: February 2017

Este artigo apresenta uma revisão sobre conceitos, métodos e abordagens a respeito da sustentabilidade ambiental, bem como estratégias e diretrizes que visam reduzir o impacto ambiental no design de embalagens. A revisão foi realizada a fim de responder a como auxiliar o desenvolvimento de projetos dessa natureza, partindo do pressuposto que orientações de projeto podem ser um dos instrumentos auxiliares no processo de design. Desse modo, o objetivo foi identificar e sistematizar diretrizes para o design de embalagens sustentáveis. O resultado traz um quadro de referências com orientações de projeto que pode ser utilizado em metodologias para o design de embalagem que busque a redução do impacto ambiental de novas soluções.
Evaluating e-Government Services in Kurdistan Institution for Strategic Studies and Scientific Research Using the EGOVSAT Model
Authors: Hassan Bryar A. , Ahmed Aram M. , Saeed Soran A. , Saeed Awin A.
Published: February 2017

Office automation is an initiative used to digitally deliver services to citizens, private and public sectors. It is used to digitally collect, store, create, and manipulate office information as a need of accomplishing basic tasks. Azya Office Automation has been implemented as a pilot project in Kurdistan Institution for Strategic Studies and Scientific Research (KISSR) since 2013. The efficiency of governance in Kurdistan Institution for Strategic Studies and Scientific Research has been improved, thanks to its implementation. The aims of this research paper is to evaluate user satisfaction of this software and identify its significant predictors using EGOVSAT Model. The user satisfaction of this model encompasses five main parts, which are utility, reliability, efficiency, customization, and flexibility. For that purpose, a detailed survey is conducted to measure the level of user satisfaction. A total of sixteen questions have distributed among forty one users of the software in KISSR. In order to evaluate the software, three measurement have been used which are reliability test, regression analysis and correlation analysis. The results indicate that the software is successful to a decent extent based on user satisfaction feedbacks obtained by using EGOVSAT Model.
HUBUNGAN KEAGENAN PEMERINTAHAN DAERAH DALAM KONTEKS ANGGARAN: SEBUAH AGENDA REKONSTRUKSI
Authors: Damayanti Ratna Ayu
Published: February 2017

The objectives of this study seem to analyze the agency relationship between executive and legislative in Jembrana local government in budgeting context during the three periods (e.g. new era, reform era, and euphoria reform era), and adat local village in Bali. This study also analyzes the instrument used by the adat local village in reducing conflict of interest and agency loss. Based on the information in adat Bali local village, the study aims at constructing a concept of agency to accommodate the agency relationship in the local government which is suitable for its organization. The method to approach to the study considers the Derrida Model to emphasize the wisdom of local culture values, or also the other isolated models. The paradigm accepts, compares, or synergizes all thoughts, and therefore, neither of definitions, texts nor ideologies appears established. All of these grow like the flowing water to follow the batch or the event flow in the field. It means that the character of the approach does not have absolute structure, form, and formality. The study, hence, utilizes ethnography as a strategy to explore and to map the local value wisdom. The conclusions of this study are: capitalism will be the artificial field where the market must replace the life. The breathing human community becomes merely an object, not subject. The study, then, looks for other alternative outside this consideration by promoting the local wisdom. Such effort really contributes to the construction of yadnya (sincere, balanced) agency relationship pattern and of compensation forms, like olihan-olihan, in which the citizen determines the proportion accepted by the agent.
KEMAMPUAN AKRUAL DAN ARUS KAS MEMPREDIKSI HARGA SAHAM MELALUI PERSISTENSI LABA
Authors: Abdullah Muhammad Wahyuddin
Published: February 2017

The objective of research seems to examine the effect of accrual and cash flow components in predicting earnings persistence. Research also aims at observing the effect of earnings persistence on stock prices, understanding the effect of accrual and cash flow components in predicting stock prices through earnings persistence. Hypotheses test considers contextual model and path analysis to connect the models in manner of causality. Research population includes manufacturing companies listed at Indonesia Stock Exchange in the financial reporting period 1999-2007. Judgment sampling criteria has been used to produce 51 companies with 5 observations for each company, resulting in data pooling of 255 companies. Empirical two model examination produces the probability of significant effect on endogenous variable, which is earnings persistence and stock prices. Individually, accrual and cash flow components have significant effect in predicting earnings persistence, earnings persistence as sustainable earnings prospect have shown significant effect on stock prices. The examination against accrual component ability in predicting stock prices indicates the coefficient of earnings persistence path as a significant mediator. The observation against cash flow component ability in predicting stock prices, however, does not show the coefficient of earnings persistence path as the significant mediator
DAMPAK KEBIJAKAN MONETER TERHADAP STABILITAS RUPIAH
Authors: Bafadal Azhar
Published: February 2017

This research aimed to study the impact of monetary policy on the rupiah stability. Variables used were the interest rate of Bank Indonesia Certificate (SBI), the rate of inflation (IHK), the exchange rate of rupiah against the US dollar (Kurs) and the money supply in the narrow sense (M1). Data used were of quarterly time series data of Bank Indonesia and Central Bureau of Statistic, covering 2002.1-2010.4. The analysis was undertaken by using a vector autoregression model (VAR), through the Impulse Response Function (IRF) and Forecast error variance decomposition (FEVD). The research results showed that in the sort run shocks of SBI  decreased the inflation rate, and in the long run the inflation rate was constant. The exchange rate tended to be appreciated in the short run and long run although in a small magnitude. Money supply decreased with a minor fluctuation. Initially, the money supply shocks increased the interest rate of SBI, but decreased in the long run. The rate of inflation fluctuated in the sort run but it was constant in the long run. The exchange rate was depreciated both in the sort run and in the long run.
COMPENSATION ANALYSIS TO INTENTION TO QUIT BY USING ORGANIZATION COMMITMENT AS THE INTERVENING VARIABLE
Authors: Anggri Prihati Minggar , Widi Oetomo Hening , Budi Utomo Sulistyo
Published: February 2017

Tujuan dari penelitian ini adalah untuk menganalisa hubungan langsung antara iklim organisasi dan kompensasi terhadap komitmen organisasi serta menganalisa hubungan tidak langsung antara iklim organisasi dan kompensasi dengan menggunakan karir sebagai variabel antara dengan Komitmen Organisasi. Objek penelitian ini adalah Perusahaan Telekomunikasi Indonesia, dan responden penelitian ini adalah seluruh karyawan di Departemen Teknis. Total populasi di Departemen Teknis adalah 66 karyawan, dengan menggunakan teknik sampel jenuh atau sensus, dimana semua karyawan adalah responden dalam penelitian ini. Teknik analisis dengan menggunakan analisis jalur yang akan menghitung parameter antara hubungan langsung dan tidak langsung. Hasil pertama dari penelitian ini adalah iklim organisasi memiliki hubungan positif langsung yang signifikan terhadap komitmen organisasi sementara kompensasi memiliki hubungan langsung negatif dan tidak signifikan terhadap komitmen organisasi. Hasil kedua penelitian ini adalah iklim organisasi dan kompensasi memiliki hubungan tidak langsung positif dan tidak signifikan terhadap komitmen organisasi melalui karir. Fenomena ini dapat dijelaskan bahwa karyawan di Departemen Teknis adalah sumber daya manusia yang langka di perusahaan telekomunikasi di Indonesia keterampilan mereka dibutuhkan oleh perusahaan.
FAKTOR-FAKTOR YANG BERPENGARUH TERHADAP LUAS PENGUNGKAPAN SUKARELA DALAM LAPORAN TAHUNAN
Authors: Nugraheni Bernadetta Diana
Published: February 2017

The objectives of this paper are to analyse the effect of firm size, liquidity, profitability, leverage, public stock, and firm base to the extensive of voluntary disclosure. In this research, measurement of information disclosure in the annual report is developed from researches of Khomsiyah (2005), Healy, et al (1995) and Lang and Lundholm (1993). Sample used is secondary data from Indonesian Stock Exchange (BEI). The annual report of manufacturing company listed from 2005 to 2010. The result of analysis shows that firm size, profitability and public stock have positive effect and significantly impact to the extensive of voluntary disclosure, while liquidity, leverage and firm base have no effect to the voluntary disclosure in the company’s annual report.
KREDIBILITAS BANK SENTRAL DAN PERSISTENSI INFLASI DI INDONESIA
Authors: Hakim Rachman , Ismail Munawar , Hoetoro Arif
Published: February 2017

The relationship between the credibility of the central bank and the persistence of inflation is still ambigous as this information is crucial in setting the appropriate policy for combating an inflation problem. The objective of this paper is to measure the rate of inflation persistence and to examine the importance of the credibility of the bank central on the persistence of inflation in Indonesia by using the New Keynesian Phillips Curve Hybrid. It is found that the persistence of inflation in the period of full - fledged Inflation Targeting (2006:1-2012:3) lower when compared with the period of Inflation Targeting Lite (2000:1-2005:4). Meanwhile, the credibility of the central bank is significantly influencing the persistence of inflation only when Indonesia was implementing the Full-Fledged Inflation Targeting. When Indonesia was applying the Inflation Targeting Lite, the impact of bank central credibility on persitence inflation was not significant. These findings indicate that the behavior of inflation in Indonesia was backward looking during the periode of Inflation Targeting Lite and becoming forwardlooking after adopting the Full-Fledged Inflation Targeting Policy. This change is related to the increased credibility of the central bank in the full - fledged Inflation Targeting period.
DETERMINAN PREFERENSI STRUKTUR MODAL USAHA MIKRO DAN KECIL
Authors: Fachrudin Khaira Amalia
Published: February 2017

Capital structure is the mix of sources of funds used by a firm.  Capital structure of Micro and Small Enterprises can be determined by several factors such as owners characteristics and firm’s characteristics.  This study aims to investigate the determinants of financing preferences MSEs owners at USU Market in Padang Bulan Medan.  The determinants consist of owners characteristics and firm’s characteristics.  The owner characteristics consists of education, entrepreneurability, and experience. Meanwhile, the firm’s characteristic used is firm size. Structured questionnaires were used to collect data from 100 micro and small enterprises.  Logistic regression model was used to test several literature-driven hypotheses. The results at the 5% alpha level show that firm size has a significant influences on the capital structure preferences of SMEs. Other variables have no significant effects.  The implication is that the larger the size, the greater opportunities of small and medium enterprises to use external capital. It is difficult for smaller enterprises to access external capital due to the minimum collateral.  They also have lack of time for the loan adimistration process.  The official financial institution needs to pay full attention to help the the smaller enterprises to get the capital needed for their business expansion.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI INDEKS PEMBANGUNAN MANUSIA DI INDONESIA PERIODE 2008-2012
Authors: Bhakti Nadia Ayu , Istiqomah Istiqomah , Suprapto Suprapto
Published: February 2017

Human Development Index (HDI) is an index established by UNDP in 1996 to measure the well-being of society. Indonesian HDI increased during the period of 2008-2012; however, there is high variation among 33 provinces. Its position in the world is still below the average (121 of 187 countries) and ranks 5th among ASEAN countries (UNDP, 2013). Based on this phenomenon this study tries to analyze the determinants of HDI which include GDP, dependency ratio, household consumption for food, government budget for education, and the budget for health. The results indicate that GDP and government budget for health have positive effect on HDI, whereas dependency ratio and household consumption for food have negative effect. However, the budget for education has no effect on HDI. HDI is an important indicator of development; therefore, the government and the society should take efforts to improve the HDI. Economic growth, income distribution, population control, poverty alleviation, as well as improvement in health services and education are needed in order to improve the HDI.
SOLUSI MODEL PERIKATAN PENGELOLAAN SDA PERTAMBANGAN MINERAL DAN BATUBARA SESUAI SYARIAH
Authors: Istiyanti Istiyanti , Huda Nurul
Published: February 2017

Natural resources management of mineral and coal mining in Indonesia is considered very alarming. Arise various problems due to the inability of the government to manage natural resources in question. One result is the low tax state revenue (non-tax) from the field of mineral and coal mining natural resources. The cause of the low non-tax revenues, among others, uncertainty calculation basis as part of the State obscurity impact the model of the contract made between the government and the companies that carry out exploration and exploitation. Authors conducted a study to formulate a solution model of contract that Shariah compliance in managing the natural resources of mineral and coal mining in Indonesia by using the methodology Analytic Networking Process (ANP) as well as with the help of software Super Decision. The results of this research is choice of Musharaka Mudaraba models of contract in managing the natural resources of mineral and coal mining based on the principle of justice.
AS DIRETRIZES CURRICULARES E O ENSINO DE HISTÓRIA DA ÁFRICA
Authors: Luigi André Santos
Published: February 2017

O texto objetiva demonstrar como o ensino de História da África é concebido pelas Diretrizes Curriculares para a Educação das Relações Étnico-Raciais e para o Ensino de História e Cultura Afro-Brasileira e Africana. Para tanto o texto percorre as seguintes etapas: primeiro, demonstra como funciona o racismo brasileiro discutindo qual o papel da educação para impedir sua reprodução; segundo, apresenta como memória, identidade se articulam através do ensino de História procurando problematizar como a historiografia brasileira abordou a história afro-brasileira e africana e, finalmente, apresenta quais os significados políticos e pedagógicos do ensino de História da África nos termos das Diretrizes Curriculares.