bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis kelayakan lahan budi daya rumput laut (Ulva sp.) pada lokasi rencana pengembangan North Sulawesi Marine Education Center di Likupang Timur
Authors: Edy Selvanus , Ngangi Edwin L. A. , Mudeng Joppy D.
Published: July 2019

The purpose of this research was to know and evaluate the condition of aquatic environment and water quality parameters for cultivation of seaweed Ulva sp. This research was conducted on North Sulawesi Marine Education Center (NSMEC). NSMEC is planned to be built at Marine Field Station FPIK UNSRAT located in Likupang Timur Kabupaten Minahasa Utara. The waters of NSMEC development area are geographically located at 1040.437 'LU and 12504.499' BT. The determination of 4 stations was done by purposive sampling which was considered to represent the condition of waters. Coordinate stations were recorded with GPS help. The data were collected for 14 days every 6:00 pm, at 12:00 pm and 17:00 pm. The observation of environmental conditions was carried out for protection factor and substrate of water base, while water quality parameter measured in situ included depth, brightness, temperature, dissolved oxygen (DO) salinity, pH and current velocity. Phosphate, nitrate and total suspended solid (TSS) were measured. Tide measurements were measured every hour for 24 hours. Data analysis used conformity matrices that included scores and weights for the determination of conformity classes. Class suitability was used to describe the suitability of seaweed. The results showed that the waters of the NSMEC development zone were in class S1 meaning very suitable for seaweed cultivation location. The analysis results of each station found that 4 stations were very suitable. As conclusion, water environment and water quality parameters of the waters of North Sulawesi Marine Education Center development area located at Marine Field Station FPIK UNSRAT were categorized as very suitable for seaweed cultivation, Ulva sp.Keywords: Ulva sp., feasibility analysis, water quality, location suitability
Pemanfaatan ragi (Saccharomyces cerevisiae) pada formulasi pakan dalam meningkatkan pertumbuhan ikan Nila (Oreochromis niloticus)
Authors: Rajagukguk Bulfrit B. , Lumenta Cyska , Mokolensang Jeffrie F.
Published: July 2019

The purpose of this research was to determine the effect of yeast (Saccharomyces cerevisiae) with different composition of 5%, 10%, 15%, 20%, and without yeast in feed formulation on growth of tilapia (Oreochromis niloticus). The experimental fish used in this study had an average lengths of 2-3 cm  and weight of 1.0 g.  This research used cage measuring 100 x 100 x 100 cm3 that was placed in outdoor concrete pond of 3.5 x 5 m2.  Each cage filled with 10 fishes with three replication.  The dose given to the fish was 10% of the weight of biomass.  The fish was fed for three weeks, 3 times a day at 08.00 am, 12.00 pm, and 16.00 pm.. Research results showed that the greatest growth was achieved in fish treated 20% yeast and the lowest was observed in control fish (without yeast). Based on statistical analysis, all treatment displayed similar effect on all growth parameters.Keywords: Fish feed, Saccharomyces cerevisiae, yeast, Nile tilapia, fish growth
Aplikasi probiotik dengan bahan lokal untuk meningkatkan pertumbuhan dan tingkat kelangsungan hidup Bawal air tawar (Colossoma macropomum)
Authors: Saselah Jetti T. , Mandeno Jefri
Published: July 2019

The purpose of this study was to find out how to make probiotics with local materials and to study the effect of feed supplemented with probiotic on the growth and survival rate of freshwater pomfret fish. This study used complete randomized design with 4 treatments, each  with 3 replications. The treatments consisted of A (Probiotics 1.5 mL/100 g feed), B (Probiotics 3 mL/100 g feed), C (Probiotic 4.5 mL/100 g feed) and D (control).  The fish was fed treatment diet  two times a day. The results showed that the highest weight and length of fish were obtained in treatment  C and the lowest in treatment B. Survival rate of pomfret was quite high ranging from 96-100%.Keywords:  pomfret fish, probiotic, growth, survival rate
Epifit pada rumput laut di lahan budidaya desa Tumbak
Authors: Mudeng Joppy D.
Published: July 2019

The purpose of this research was to identify the types of epiphyte that attach to seaweed in cultivation area of Tumbak Village, Posumaen District, Southeast Minahasa Regency.  Identifications were done directly in cultivation site owned by farmers and  in Laboratory of Aquaculture Technology, Faculty of Fisheries and Marine Science Sam Ratulangi University.  Observations were conducted three times at two weeks interval.  Weight of seaweed was measured to obtain data of daily growth rate.  In addition, water quality was also measured in situ including dissolved oxygen, pH, temperature and  salinity.  Research result found there were  three species of epiphyte attaching on seaweed K. alvarezii  including Ulva reticulata Forsskal, Dictyota dicotoma (Hudson), and Achanthophora spicifera (J. Agardh).  Seaweed tested was still clean until the end of research period  and only a few of epiphyte was observed.  This condition, supported by good water quality during the research period, resulted in very good growth of seaweed with  a daily growth rate achieved 4.43%. Keywords: seaweed, epiphyte, daily growth rate
Studies on seagrasses of North Sulawesi, Indonesia and adjacent waters: A critical review
Authors: Wagey Billy T.
Published: July 2019

The importance of seagrasses in terms of ecological and economic benefits are well-known. This paper describes the status of research on seagrasses conducted so far, with relevance to the North Sulawesi region. Most of the studies done in Indonesia, especially in North Sulawesi, have focused on species richness and biodiversity as well as basic biological questions such as biomass and morphometric differences of certain seagrass species between sampling localities. While several studies have been conducted, there is a general need for Indonesian marine scientists to expand research areas related to food-web dynamics and inter-connectivity of major fishery and nursery habitats (mangroves-seagrass-coral reefs) with the aid of modern tools (e.g. molecular approach).   Keywords: benefits, biology, ecology, economic, seagrass
Pemanfaatan kotoran ternak dengan dosis yang berbeda terhadap pertumbuhan dan biomassa cacing sutra (Tubifex sp.)
Authors: Wenda Detiben , Pangkey Henneke , Mokolensang Jeffrie F. F.
Published: July 2019

The purpose of this study was to analyze the use of cattle dung on the growth and biomass of silk worms. The experiment was conducted at Freshwater Aquaculture Center (BPBAT) Tatelu, Tatelu Village, Dimembe Subdistrict, North Minahasa Regency, North Sulawesi Province, about 35 km from Manado city. The media used was pig manure, chicken manure, cow dung, and fine mud added with EM4. The method used was complete randomized design (RAL) with 4 treatments including A. 500 g of pig manure, 500 g of chicken manure 500 g of cow dung, and 500 g of fine mud; B. 600 g of pig manure, 400 g of chicken manure 500 g of cow dung, 500 g of fine mud; C. 700 g of pig manure, 300 g of chicken manure, 500 g of cow dung, 500 g of fine mud; and K (control) was 2000 g of fine mudinand, each with 3 replications. Water quality parameters measured during the study were temperature, pH, DO, nitrate and nitrite. The results showed that there was a very significant effect on growth but not for the value of silk worm biomass. The highest growth was found in treatment A that was 38 g, while for the highest biomass also in treatment A namely 1.5 g / cm3. Water quality parameters during the study were 24.3-25.4° C, pH 7,1-7,3; DO 2.7-5,7 ppm; nitrate 1.1-1.4 ppm; nitrite 0.011-0.201 ppm.Keywords:  Cattle dung, growth, biomass, Tubifex sp., aquaculture
Penambahan madu dalam pengenceran sperma terhadap motilitas spermatozoa, fertilisasi dan daya tetas telur ikan Patin Siam, Pangasius hipophthalmus
Authors: Marthin Lutfi , Watung Juliaan Ch. , Kalesaran Ockstan J. , Ginting Elvi L. , Sinjal Hengky J. , Salindeho Indra R.N.
Published: July 2019

This research aimed to determine the optimal doses of honey addition on the sperm dilution to optimize spermatozoa motility, fertilization and hatchability of Patin Siam  eggs (Pangasius hypophthalmus).  The experimental design used was Complete Random Design (RAL).  Diluent solution consisted of a physiological NaCl 0.9% and honey.  Treatment doses of honey in aqueous diluent sperm tested as treatments were A (0 mL), B (0.2 mL), C (0.4 mL) and D (0.6 mL), each with three replications.  Observations made included spermatozoa motility, fertilization and eggs hatchability.  The research results showed that the addition of honey had a significant influence on motility,  fertilization, and eggs hatchability. This study concluded that the addition of honey in sperm diluent solution with a dose of 0.6 mL of honey in 99.4 mL of NaCl could increase the spermatozoa motility and  fertilization of Patin siam. Keywords:  honey, motility, fertilization, hatchability,  Pangasius hipophthalmus
HÁBITOS ALIMENTARIOS Y CONDICIONES PSICOLÓGICAS ASOCIADOS AL SÍNDROME DE INTESTINO IRRITABLE EN UN HOSPITAL PÚBLICO
Authors: Medrano Egoávil Elizabeth , Calderón Juárez Lucio , Huamán Gonzales Luis , Paco Fernández Miguel , Dámaso Mata Bernardo
Published: July 2019

Introducción: El objetivo del presente estudio fue identificar los hábitos alimentarios y las condiciones psicológicas que actúan como factores asociados al Síndrome de Intestino Irritable en la consulta ambulatoria del servicio de gastroenterología del Hospital Base II Es-Salud de Huánuco-2009. Métodos: Se realizó un estudio observacional, analítico, longitudinal, retrospectivo de casos y controles emparejado por edad y género. Los casos fueron asegurados diagnosticados de SII según los criterios Roma III del año 2009. Se trabajó con una muestra de 210 pacientes de la consulta ambulatoria del servicio de gastroenterología del Hospital II Es-Salud de Huánuco: 105 casos y 105 controles (Error tipo 1 = 0,05, potencia = 0,8, probabilidad anticipada de casos expuestos = 43,5%, probabilidad anticipada de controles expuestos = 25%). Muestreo por conveniencia. Las variables estudiadas como factores de riesgo para el SII fueron: hábito alimentario y ansiedad/depresión; medidas a través de un cuestionario de hábitos alimentarios adaptado y evaluado por opinión de expertos y la escala HADS respectivamente. Resultados: El promedio de edad de los asegurados fue de 51,32±12,69 años con una distribución por género de 132 mujeres/78 varones. En la evaluación estadística bivariada entre los factores de riesgo estudiados y el SII, se encontró significancia estadística con el hábito alimentario {(p=0,0000; OR=4,36 (IC 95% 2,03–9,83)}. Se analizaron las características clínicas de los asegurados y se encontró relación entre el SII y las siguientes variables: omite la cena (74,3%), come lento (73,5%), come fuera de casa (63,1%), toma medicamentos (67,3%), tiempo antes de acostarse ≤ 1h (68,8%) y molestias o dolor abdominal con los alimentos (76,1%), todos ellos con IC=95%; p<0,05. Conclusiones: Las alteraciones en el hábito alimentario han demostrado estar presentes en los asegurados con Síndrome de Intestino Irritable. El SII se relaciona con la omisión de la cena, velocidad de consumo lenta, comidas fuera de casa, consumo de medicamentos, tiempo antes de acostarse ≤1hora y la presencia de molestias o dolor abdominal con la ingesta de algunos alimentos.
Factores relacionados a partos por cesárea en el Hospital II EsSalud de Huánuco
Authors: Huamán Santillán Abner , Palacios Sánchez Carla , Rojas Espinoza María Angélica , Guerrero Kuoc César
Published: July 2019

Introducción: El objetivo del presente estudio fue determinar la frecuencia de las cesáreas en el Hospital II EsSalud - Huánuco e identificar los factores relacionados a su ocurrencia. Métodos: Diseño descriptivo transversal. La variable dependiente fue “tipo de parto” y las variables independientes incluyeron características clínicas y no clínicas. Para la obtención de los datos se utilizaron las historias clínicas. Se realizó un análisis bivariado de las variables clínicas, usando la prueba chi-cuadrado y la prueba exacta de Fisher; además, se asoció con razón de prevalencia (RP); el análisis estadístico de la variable no clínica se realizó con la correlación de Pearson. Resultados: La tasa de cesárea obtenida fue de 37,16%, encontrándose asociación entre cesárea y las variables cesárea previa [p=0,000; RP: 2,81 (IC: 2,12-3,72)], presentación fetal [p=0,034; RP: 2,14 (IC: 1,37-3,34)], desprendimiento prematuro de placenta [p=0,039; RP: 2,61 (IC: 1,73-3,94)], sufrimiento fetal agudo [p=0,000; RP: 2,68; (IC: 1,99-3,60)], ruptura prematura de membrana [p=0,011; RP: 1,76 (IC: 1,20-2,58)], placenta previa (p=0,013; RP: 2,71 (IC: 1,92-3,82)] y disturbio de líquido amniótico (p=0,012; RP: 1,90 (IC: 1,26-2,88)]; no siendo estadísticamente significativas las variables macrosomía fetal, hipertensión inducida por el embarazo, tratamiento por infertilidad, embarazo múltiple y condilomatosis. La variable no clínica “médico” no fue significativa. Conclusiones: La tasa de cesárea en el Hospital II EsSalud- Huánuco fue de 37,16%; los factores relacionados a cesárea fueron cesárea previa, presentación fetal, desprendimiento prematuro de placenta, sufrimiento fetal agudo, ruptura prematura de membrana, placenta previa y disturbio de líquido amniótico.
Enterobiasis en la población de 5 a 11 años de los colegios del distrito de Quisqui-Huánuco
Authors: Espinoza Livias Franco Elio , Huaynates Natividad Luisa
Published: July 2019

Introducción El objetivo del presente estudio fue determinar la frecuencia y factores relacionados a enterobiasis en la población de 5 a 11 años de los colegios del distrito de Quisqui-Huánuco durante el periodo de junio a setiembre del 2014. Métodos: Se llevó a cabo un estudio de prevalencia en 430 niños, tomados aleatoriamente de 880 niños de entre 5 y 11 años (IC: 95%). Todos los datos fueron recolectados a partir de fuentes primarias: entrevista e informe de resultados del test de Graham. La recolección de las muestras para el diagnóstico de Enterobiasis fue seriada, por la técnica de Graham, durante 3 días consecutivos, que luego fueron analizadas por microscopía directa. Resultados: Se encontró una prevalencia general de Enterobiasis del 60%. Las diferencias entre las frecuencias de infección según edades y sexo no fueron significativas. Se evidenció un mayor porcentaje de infección en el sexo femenino que en el masculino (63.5% vs 56.8%), y en el rango etario >8 años. En el análisis bivariado se encontró asociación significativa (P<0,05) con el grado de instrucción de la madre, hábitos higiénicos sanitarios, hacinamiento, eliminación de excretas, fuente de abastecimiento de agua, onicofagia y desparasitación previa. El 85.1% de los niños presentaban sintomatología, siendo el dolor abdominal, el prurito anal y la disminución del apetito los síntomas más frecuentes con 71.6%, 49.1% y 48.1% respectivamente. Conclusiones: Esta elevada prevalencia refleja una relación directa con las condiciones socio-epidemiológicas desfavorables, que facilitarían los continuos procesos de infección.
Infección del tracto urinario por salmonella no typhi en paciente diabética
Authors: Berrospi Rojas Carlos , Callupe Laurencio Geydy , Cachay Lu Carlos , Arteaga Livias Franz
Published: July 2019

La infección del tracto urinario es un importante problema de salud. La infección urinaria causada por microorganismo del genero Salmonella es rara y se asocia a enfermedades inmunosupresoras. Presentamos el caso de una paciente con antecedente de Diabetes Mellitus que presenta molestias urinarias y urocultivo positivo a Salmonella no tiphy. Con el avance de la medicina y el aumento de procesos inmunospuresores puede verse con mayor frecuencia este tipo de patologías.
Factores que influyen en el nivel de conocimiento sobre las complicaciones del aborto en estudiantes universitarias
Authors: Bonilla-Crispin Ángela , Espinoza-Campos Lady , Gonzales-Sánchez Ernesto
Published: July 2019

Introducción: En el Perú, el aborto es el problema social más frecuente en las adolescentes, siendo de 14 a 21 años el grupo etario más afectado. El objetivo fue determinar la asociación entre el grado de instrucción de los padres, funcionalidad familiar y fuentes de información con el nivel de conocimiento de las complicaciones del aborto en estudiantes mujeres de las facultades de Contabilidad y Enfermería de la UNHEVAL Huánuco. Métodos: Se realizó un estudio descriptivo transversal con un tamaño de muestra de 246 estudiantes, que cumplieron los criterios de inclusión y exclusión. Para la recolección de datos se utilizó un cuestionario previamente validado por expertos. El análisis estadístico utilizado fue SPSS 15 (U de Mann-Whitney). Resultados: De 246 estudiantes. La media de la edad fue de 21,25±1,8. Tanto el grado de instrucción de los padres como la funcionalidad familiar no demostraron asociación significativa con el nivel de conocimiento de las complicaciones del aborto, obteniendo p=0,479, p= 0,392 y p=0,56 respectivamente. El 56,1% que obtuvo un nivel de conocimiento alto reporto que obtuvo información tanto de profesores como de la televisión, que tuvo resultados significativos (p=0,01) y (p= 0,008). Conclusiones: De este grupo de estudiantes los factores que influyen en el nivel de conocimiento sobre las complicaciones del aborto fueron las fuentes de información, de todos ellos, los profesores y la televisión.
Dispepsia funcional en estudiantes de medicina de la Universidad Nacional Hermilio Valdizán, 2017
Authors: Canales-Pichén Diego , Carhuaricra-Atahuaman Javier
Published: July 2019

Objetivo: Determinar la asociación entre ansiedad, depresión y hábitos alimenticios con la dispepsia funcional en los estudiantes del primero a sexto año de la EP. Medicina Humana de la UNHEVAL – Huánuco 2017. Métodos: Se realizó un estudio observacional, analítico y transversal en 223 alumnos. Se aplicó un cuestionario de 73 preguntas: cuestionario diagnóstico de la dispepsia funcional ROMA III, escala de autoevaluación de ansiedad de Zung (EAA), cuestionario de depresión de Beck y cuestionario de hábitos alimenticios. Resultados: En cuanto a la asociación de la ansiedad, depresión y hábitos alimenticios con la dispepsia funcional (DF); se precisó que, si existió una asociación significativa entre estas variables. La ansiedad se presentó en el 26,5%, de los cuales el 51,3% padecieron de DF (p=0,000). La depresión se presentó en un 12,1%, de los cuales el 38,5% de los estudiantes padecieron de DF (p=0,000). Los hábitos alimenticios están asociados a la DF; un 51,3% con DF omitieron el desayuno (p=0,003); un 61,5% con DF omitieron el almuerzo (p=0,000); un 56,4% con DF omitieron la cena (p=0,000); un 51,3% con DF tuvieron un volumen de ingesta inadecuada (p=0,005); un 53,8% con DF tuvieron una velocidad de alimentación inadecuada (p=0,022); un 51,3% con DF tuvieron una temperatura de alimentos inadecuada (p=0,000); tuvieron una relación significativa. Conclusión: Existe asociación significativa entre la ansiedad, depresión y hábitos alimenticios con la dispepsia funcional.
Conocimiento sobre las infecciones de trasmisión sexual en un colegio público de Huánuco
Authors: Cabrera-Solis Cinddy M. , Arevalo-Gonzáles Diana C.
Published: July 2019

Objetivo: Determinar los factores relacionados del nivel de conocimiento sobre las infecciones de trasmisión sexual en alumnos del colegio público Jorge Basadre, Santa María del Valle, Huánuco 2017. Metodología: Se realizó un estudio observacional, analítico, prospectivo y longitudinal. De diseño caso y control. Resultados: El desempeño del docente no está relacionado con el nivel de conocimiento pues como se evidencia tuvo un valor de P (prueba de Fisher) mayor de 0,05 por ello no fue significativo. Así mismo no es un factor de riesgo pues se obtuvo un [OR de 1,00; (IC 95% 0,174 – 5,743)]. La estructura familiar no está relacionada con el nivel de conocimiento pues como se evidencia tuvo un valor de P mayor de 0,05 por ello no fue significativo. Así mismo no es un factor de riesgo pues se obtuvo un [OR de 0,45 (IC 95% 0,135 – 1,525)]. La motivación del estudiante no está relacionada con el nivel de conocimiento pues como se evidencia tuvo un valor de P mayor de 0,05 por ello no fue significativo. Así mismo no es un factor de riesgo pues se obtuvo un [OR de 1,00 (IC 95% 0,088 – 11,422)]. Conclusión: El desempeño laboral del docente, la motivación del alumno y la disfunción familiar no están relacionados al nivel de conocimiento sobre las infecciones de trasmisión sexual en alumnos del colegio público Jorge Basadre, Santa María del Valle, Huánuco 2017.
Synthesis of diastereomeric pheromones: adjacent methyl-branched alcohols and ketones
Authors: LE V A N-D U N G , Dang Chi-Hien , Nguyen Cong-Hao , Dang Van-Su , Nguyen Thanh-Danh
Published: July 2019

Racemic synthesis of adjacent methyl-branched alcohol and ketone pheromones is particularly considered for large scale trap of insects due to their similar activity to the chiral components in field trial. In this work, we presented a straightforward and effective strategy for racemic synthesis of adjacent methyl-branched alcohols to obtain the different diastereomer rates (threo: erythreo = 2:1 and 1:1) via Felkin-Anh model.  No effect of alkyl chain lenth on stereoselectivity of adduct has been demonstrated. Moreover, the α-methyl ketones were effectively produced by microwave-assisted oxidation of the respective secondary alcohols using 2-iodoxybenzoic acid (IBX)
Taxonomy, systematics and geographic distribution of ground frogs (Alsodidae, Eupsophus): a comprehensive synthesis of the last six decades of research
Authors: Correa Claudio , Durán Felipe
Published: July 2019

The genusEupsophus(ground frogs) inhabits exclusively the temperate forests of southern South America (Chile and Argentina). The current delimitation of the genus was reached in the late 1970s, when only two species were recognized, but since then the number of described species steadily increased, reaching a maximum of 11 by 2012. Subsequent studies that applied explicit species delimitation approaches decreased the number of species to six in 2017 and raised it again to 11 the following year, including an undescribed putative species. Despite these taxonomic changes, the two species groups traditionally recognized,roseusandvertebralis, have been maintained. Another recent contribution to the taxonomy of the genus was the explicit recognition of the extremely high level of external phenotypic variation exhibited by species of theroseusgroup, which undermines the utility of some diagnostic characters. Here we provide a critical review of the extensive taxonomic and systematic literature on the genus over the last six decades, to examine the evidence behind the recurrent taxonomic changes and advances in its systematics. We also update and complete a 2017 review of geographic information, provide additional qualitative observations of external characters commonly used in the diagnoses of species of theroseusgroup, and reassess the phylogenetic position of a putative new species from Tolhuaca (Chile), which was not included in the last species delimitation study. The present review shows that: 1) there is no congruence between the patterns of phenotypic and genetic/phylogenetic differentiation among species of both groups; 2) in theroseusgroup, the intraspecific variation in some external characters is as high as the differences described among species; 3) there is little morphological and bioacoustic differentiation within species groups, and inconsistencies in the chromosomal evidence at the genus level; 4) under the latest taxonomic proposal (2018), species of theroseusgroup still lack consistent and reliable diagnoses and their distribution limits are poorly defined; and 5) the population from Tolhuaca represents an additional undescribed species under the most recent taxonomic framework. Finally, we discuss the implications of these findings for the taxonomy and biogeography of the genus, pointing out some areas that require further research to understand their patterns and processes of diversification.
Genetic algorithm for the cargo shunting cooperation between two hub-and-spoke logistics networks
Authors: Hu Jingjing , Huang Youfang
Published: July 2019

Purpose: The overstocked goods flow in the hub of hub-and-spoke logistics network should be disposed of in time, to reduce delay loss and improve the utilization rate of logistics network resources. The problem we need to solve is to let logistics network cooperate by sharing network resources to shunt goods from one hub-and-spoke network to another hub-and-spoke network.Design/methodology/approach: This paper proposes the hub shunting cooperation between two hub-and-spoke networks. Firstly, a hybrid integer programming model was established to describe the problem, and then a multi-layer genetic algorithm was designed to solve it and two hub-and-spoke networks are expressed by different gene segments encoded by genes. The network data of two third-party logistics companies in southern and northern China are used for example analysis at the last step. Findings: The hub-and-spoke networks of the two companies were constructed simultaneously. The transfer cost coefficient between two networks and the volume of cargo flow in the network have an impact on the computation of hubs that needed to be shunt and the corresponding cooperation hubs in the other network.Originality/value: Previous researches on hub-and-spoke logistics network focus on one logistics network, while we study the cooperation and interaction between two hub-and-spoke networks. It shows that two hub-and-spoke network can cooperate across the network to shunt the goods in the hub and improve the operation efficiency of the logistics network.
IT Governance in SMEs
Authors: Frogeri Rodrigo Franklin , Pardini Daniel Jardim , Cardoso Ana Maria Pereira , Prado Liz Áurea , Piurcosky Fabrício Pelloso , Junior Pedro dos Santos Portugal
Published: July 2019

The adoption of Information and Communication Technologies (ICTs) by small and medium-sized enterprises (SMEs) leads to cost reduction in processes and organizational effectiveness. The effective use of ICTs, however, greatly depends on their good governance, especially due to the impact generated by investments in information and communication technologies. In this scenario, we aimed at defining the state of art of IT governance in SMEs. A broad review of the literature on IT governance in SMEs was performed. The results indicated a field of research with little development, with 32 studies identified until the year 2018. Three research lines were observed. Initially, the researchers have discussed the barriers and characteristics of ITG in SMEs. In the next step, the studies were directed to the establishment of an ITG framework applicable to SMEs reality. The last line of research observed the IT capacities in relation to the environment in which the SME operates. The studies indicated a prevalence of qualitative approaches under the positivist paradigm.
Optical and Electrical Investigation of Electrospun PAN/TiO2, Bi2O3, SiO2 Composite Thin Films
Authors: Matysiak Wiktor
Published: July 2019

The aim of study was to produce a nanocomposite polymer fibrous thin films, with the participation of the reinforcing phase in the form of TiO2/Bi2O3/SiO2 nanoparticles with a matrix of polyacrylonitrile (PAN), made by electrospinning of solution and investigation of optical and eletrical properties of obtained nanomaterials. To determination of structore of used ceramic nanoparticles the X-ray diffraction analysis (XRD) was carrying out. The morphology of the obtained polymeric and composite fibrous mats and dispersion of nanoparticles in their volume was examined using scanning electron microscopy (SEM). All the physical properties of which were: the dielectric constant, and refractive index were tested and plotted against the concentration by weight of the used reinforcing phase which was as follows: 0%, 4%, 8%, 12% for each type of nanoparticles. The optical and electrical constants of obtained thin folms was performed on the basis of UV-Vis spectra of absorbance as a function of the wavelength. Using two metods: the method proposed by the author and the recorded absorbance spectra and spectroscopic ellipsometry determined the refractive index n, real n' and imaginary k part of the refractive index as a function of the wavelength, complex dielectric permeability , real and imaginary part r and i of the dielectric permeability as a function of the wavelength of the polimeric and composite fibrous thin films.
Optical Thin Films of Metal Oxides Produced by the Sol-Gel Method for Photovoltaic Applications
Authors: Szindler Marek
Published: July 2019

The use of thin films in optoelectronic and photovoltaic devices is aimed at improving the physical properties of the substrate material. The modification of the surface of the silicon substrate is thus one of the greatest challenges in research on photovoltaic materials, in order to achieve even greater efficiency or better adapt their properties depending on the application. The technologies of applying layers vary depending on the effect to be obtained and the material from which the layer is formed. In practice, the most common method is chemical vapor deposition and physical vapor deposition, and the most commonly applied optical materials are SiO2, TiO2 and Si3N4.This paper presents the results of investigations on morphology and optical properties of the prepared aluminium oxide thin films. Thin films were prepared with use of sol-gel spin coating method. Surface morphology studies were carried out using an atomic force microscope. To characterize the surface of the thin films, 3D images and histograms of the frequency of individual inequalities were made. In order to characterize the optical properties of Al2O3 thin films, the reflectance and light transmission tests were performed using a spectrophotometer. Optical constants were determined using a spectroscopic ellipsometer. Results and their analysis show that the sol-gel method allows the deposition of homogenous thin films of Al2O3 with the desired geometric characteristics and good optical properties. Uniform, continuous thin layers with a roughness not exceeding a few nanometres were deposited. Their deposition enabled to reduce the reflection of light from the polished substrate below 15% in a wide range (425-800nm) while maintaining high transparencies (over 90%). The obtained results causes that mentioned thin films are good potential material for optics, optoelectronics and photovoltaics.
Barium esophagogram in various esophageal diseases: A pictorial essay
Authors: Debi Uma , Sharma Madhurima , Singh Lokesh , Sinha Anindita
Published: July 2019

Recent years have seen a decline in number of barium procedures due to wider availability of cross sectional imaging modalities. Though use of barium esophagography/barium swallow has decreased in day to day clinical practice, it still remains a valuable test for structural and functional evaluation of esophagus. It can be performed as single or double contrast examination or as a multiphasic examination comprising upright double contrast views followed by prone single contrast views. This pictorial essay demonstrates imaging features of various esophageal diseases on barium esophagogram.
MRI evaluation of Kimura’s disease with emphasis on diffusion weighted imaging and enhancement characteristics
Authors: Shaikh Minhaj , Garg Pawan , Sharma Parameshwar , Khera Pushpinder
Published: July 2019

Kimura’s disease is a rare disease of the head and neck region affecting mainly the adult males in eastern countries. The parotid and periparotid subcutaneous regions are the most common sites in head and neck region. Coupled with peripheral eosinophilia and raised serum IgE levels as characteristic features on hemogram, a painless swelling in parotid and periparotid region is diagnostic of Kimura’s disease. Magnetic resonance imaging (MRI) has been an important modality in evaluating lesions of the head and neck region. Recently, interest in the diffusion weighted imaging (DWI) and contrast enhanced MRI (CEMRI) imaging of lesions in Kimura’s disease has been noted to characterize it and differentiate it from other pathologies. We describe a case a recurrent Kimura’s disease of the periparotid region and its MRI features with special emphasis on its characteristics on DWI and contrast enhanced sequences.
Imaging in chronic pancreatitis: State of the art review
Authors: Kamat Rohan , Gupta Pankaj , Rana Surinder
Published: July 2019

Chronic pancreatitis (CP) is an important gastrointestinal cause of morbidity worldwide. It can severely impair the quality of life besides life-threatening acute and long-term complications. Pain and pancreatic exocrine insufficiency (leading to malnutrition) impact the quality of life. Acute complications include pseudocysts, pancreatic ascites, and vascular complications. Long-term complications are diabetes mellitus and pancreatic cancer. Early diagnosis of CP is crucial to alter the natural course of the disease. However, majority of the cases are diagnosed in the advanced stage. The role of various imaging techniques in the diagnosis of CP is discussed in this review.
Prospective Placebo-controlled Randomized Trial to compare the Efficacy of Ketamine as an Adjuvant to Epidural Steroids in preventing Repeat Blocks in Chronic Low Back Pain
Authors: Singh Saru , Gupta Ruchi , Bawa Chashamjot , Mahajan Lakshmi , Kaur Bhanupreet , Kaur Tavleen
Published: July 2019

Introduction

Low back pain behaves as a “silent epidemic,” ranking first among complications related to work. Often there is a large gap between a patient's desired pain reduction and the minimum percentage of improvement that would make a treatment worthwhile. Consequently, debate continues as to the value of epidural steroid injections, supremacy of one adjuvant over others, various doses, and concentrations in optimizing pain management.

Objective

To compare the efficacy of ketamine vs normal saline as an adjuvant to epidural steroids in chronic low back pain.

Study design

Randomized prospective placebo-controlled study.

Materials and methods

The study was conducted on 60 patients of age group 18 to 70 years having chronic lower backache with or without radiculitis of minimum 3 months duration and having no relief with conventional treatment. The patients selected were randomly allocated into two groups of 30 patients each: Group I (n = 30) given triamcinolone 40 mg, preservative-free ketamine 30 mg (0.6 mL) made up to 6 mL solution with 0.25% bupivacaine and group II (n = 30) given 0.6 mL normal saline instead of ketamine.

Outcome measures

The primary outcome measured was number of patients requiring repeat blocks and number of repeat blocks administered in 3 months. Other outcome measures were functional improvement quantified by visual analog scale (VAS) and Oswestry disability index (ODI) as well as improvement in psychological status by depression scoring, all taken at 2 weeks interval for 3 months. The periprocedural complications were also noted at the end of the study.

Results

In managing lumbar radicular pain with lumbar epidural steroid injection (LESI), ketamine's role as an adjuvant proved to be advantageous for long-term relief by its inhibition of dorsal horn “wind up” phenomenon through N-methyl-D-aspartate (NMDA) receptor antagonism, thus reducing frequency of repeat blocks in group II (ketamine).

Conclusion

Thus to conclude, ketamine's advantage as a drug that prolongs pain relief from LESI is an avenue for further research and promises a bright future in the field of interventional pain medicine.

How to cite this article

Gupta R, Bawa C, Singh S, Mahajan L, Kaur B, Kaur T. Prospective Placebo-controlled Randomized Trial to compare the Efficacy of Ketamine as an Adjuvant to Epidural Steroids in preventing Repeat Blocks in Chronic Low Back Pain. Curr Trends Diagn Treat 2017;1(1):15-21.
Reconhecimento como categoria de crítica cultural
Authors: Serelle Marcio
Published: July 2019

Neste artigo objetivo investigar as articulações entre política do reconhecimento e crítica cultural. Examino como a crítica jornalística de ficção audiovisual manifesta aspectos desse paradigma por meio de três relações não excludentes: a identificação e análise do reconhecimento como perspectiva estruturante da obra; o reconhecimento como valor de aferição; e como demanda mais complexa por paridade imagética. Para isso, analiso a crítica de filmes como Pantera Negra e O estranho que nós amamos. Os resultados apontam para a emergência de uma crítica menos estética do que ética, que privilegia aspectos identitários das personagens e questões de representatividade na indústria audiovisual. O artigo propõe, ao final, o desafio de se articular o valor de reconhecimento a fatores estéticos para uma análise mais ampla do discurso audiovisual.
A problemática da crítica no jornalismo independente
Authors: Bronosky Marcelo Engel , Santos Luciane Justus dos
Published: July 2019

Este artigo propõe problematizar a reduzida presença de espaços de crítica nas experiências autodenominadas independentes no jornalismo brasileiro. Trata-se de uma reflexão que, inicialmente considerou o Mapa de Jornalismo proposto pela Agência Pública, a fim de identificar as inciativas independentes, que nasceram na internet, caracterizados por projetos coletivos. Além da figura do ombudsman, interessa discutir dados referente à disponibilidade ou não de espaços para comentários dos leitores. A articulação dos elementos ombudsman-leitores se faz no esforço de avaliar que perspectivas estão colocadas, nas experiências de jornalismo independente online, quanto a fluxos comunicacionais voltados para modos de crítica relativos aos modos do fazer jornalístico. O objetivo é, a partir de interesses comuns de pesquisa, compreender os limites e as perspectivas teórico-metodológicas que permeiam os estudos de crítica de mídia no jornalismo contemporâneo.
Fake news e a falha da Folha de S. Paulo: visibilidade da crítica em casos de paródia e sátira jornalística
Authors: Paganotti Ivan
Published: July 2019

Em 2010, o jornal Folha de S. Paulo demandou judicialmente a remoção do site www.falhadespaulo.com.br, que imitava elementos de sua identidade visual para criticar seu noticiário. Este estudo analisa como o conteúdo removido encontrou novos espaços online, dando ainda mais atenção para o que se procurava ocultar. Para isso, serão analisados documentos legais usados como prova e também como instrumento de legitimação da narrativa objetiva em um site de humor, publicados por um dos lados da contenda para destacar sua transparência em caso que envolve pedidos de ocultamento. Com a decisão final, protegendo o direito de paródia (e negando a remoção de site ainda fora do ar), é necessário analisar como o caso adianta elementos da discussão sobre sites que imitam o jornalismo para sua crítica, um sentido polêmico do termo “ fake news”.
A mediação do outro na tela da TV: desafios e limites da crítica midiática
Authors: Simões Paula Guimarães , Sepulveda Lucas Afonso
Published: July 2019

A proposta do artigo é compreender a mediação do outro e o potencial crítico desse processo a partir do debate sobre o racismo em um programa de TV que “experimenta” com o cotidiano, o Vai fazer o quê? (TV Globo). Inicialmente, investigamos o que a representação construída em um dos episódios do programa nos afirma sobre o contexto midiático-social contemporâneo e refletimos sobre a forma como a própria narrativa que tenta criticar o racismo brasileiro acaba sendo atravessada, ela própria, por ideologias racistas. Por fim, questionamos os limites éticos de um “experimento” televisivo que coloca sujeitos comuns involuntariamente em situações de sofrimento e tentamos apreender o papel do programa na crítica que realiza sobre o racismo em nossa sociedade.
Construções críticas no jornalismo audiovisual especializado de Starte
Authors: Franco Guilherme Sofia
Published: July 2019

O trabalho investiga as possibilidades críticas na construção de reportagens do jornalismo cultural na televisão. Procuramos compreender de que maneira os programas especializados produzidos por emissoras temáticas, por trabalharem com assuntos ligados à arte e atenderem à demanda de um público específico, exploraram formas de construção audiovisual sofisticadas por meio da análise da Série Corpos exibida pelo Starte, na GloboNews, em abril de 2014.
Aulacoseira giraffensis (Bacillariophyceae), a new diatom species forming massive populations in an Eocene lake
Authors: Siver Peter A. , Wolfe Alexander P. , Edlund Mark B. , Sibley Joel , Hausman Josh , Torres Paula , Lott Anne Marie
Published: July 2019

Background and aims – Diatoms began to inhabit freshwater by at least the Late Cretaceous, becoming well established by the early to middle Eocene. Aulacoseira, an important diatom in numerous ponds, lakes and rivers today, was one of the earliest known genera to colonize freshwater ecosystems. Members of this genus with characteristics familiar to those found on modern species became increasingly more abundant by the Eocene, and continued to thrive throughout the Miocene to the present. We describe a new species of Aulacoseira from an early to middle Eocene site near the Arctic Circle in northern Canada.

Methods – Twelve samples taken from the Giraffe Pipe core were analysed in this study. Light and scanning electron microscopy were used to document morphological characters. Morphometric measurements were made from 200 specimens per sample (n = 1200), and used to investigate changes in valve size over time.

Key results – The new species, Aulacoseira giraffensis, has valves with a length:width ratio close to 1, a hyaline valve face, straight mantle striae, a shallow ringleiste, branched linking spines, concave-convex complementarity on adjacent valve faces, and rimoportulae with simple papillae-like structure. The suite of characters, especially the highly branched spines, concave-convex valves and simple rimoportulae, is unique for this species. Large numbers of A. giraffensis specimens were found over a ten-metre section of the core, representing thousands of years. These high concentrations are indicative of abundant, bloom-like, growth.

Conclusions – The locality represents one of the earliest known records of Aulacoseira dominating a freshwater community. Findings confirm that the morphological body plan for the genus was well established by the Eocene. Although findings indicate evolutionary stasis in morphological structure for A. giraffensis over a time scale of thousands of years, oscillations in valve morphometrics could potentially be used to trace changes in the environment of this ancient Arctic waterbody.
The novel species Navicula eileeniae (Bacillariophyta, Naviculaceae) and its recent expansion in the Central Appalachian region of North America
Authors: Potapova Marina G. , Ciugulea Ionel , Minerovic Alison
Published: July 2019

Background and aims – A novel species of Navicula has been recently discovered in rivers of the central Appalachian Mountains, USA. The purpose of this paper is to formally establish this new species and to determine whether it had been overlooked in the past or is a recent arrival to the area.

Methods – We studied historical collections made in Pennsylvania, Virginia and adjacent areas since the 1940s and housed at the ANSP Diatom Herbarium. Light and scanning electron microscopy was employed to study the morphology of the new species and similar Navicula taxa, including those commonly reported at the same locations, or originally described from the rivers of the eastern United States, such as N. radiosafallax, initially established as N. radiosa var. parva by J.H. Wallace.

Key results – The new species has an unusual shape of the external raphe slit, which is undulate toward the proximal ends. This character was so far found in a single other Navicula species known only from Europe. Examination of historical materials confirmed that N. eileeniae was absent from collections made in the eastern United States before 2007, but has become progressively more common and abundant in the last decade. The prevalence of this species in streams of low to moderate mineral and nutrient content suggests that its recent expansion cannot be explained by pollution. Climate change is also unlikely to have caused the northward expansion of N. eileeniae, as it has never been recorded south from central Appalachia.

Conclusions – The results of this study confirm that a population of previously unknown Navicula species has been expanding in Central Appalachia and suggest that rapid shifts of distributional ranges not readily explainable by environmental changes may occur in protists.
Typification of the puzzling diatom species Neidium iridis (Neidiaceae)
Authors: Hamilton Paul B. , Stachura-Suchoples Katarzyna , Kusber Wolf-Henning , Bouchard Andreanne , Jahn Regine
Published: July 2019

Background and aims – Confusion over the taxonomic identity of Neidium iridis (Ehrenb.) Cleve (= Navicula iridis Ehrenb.) has persisted for more than 130 years with identifications of valve shapes varying from elliptical to linear and sizes from 100 to 300 µm. This confusion can be linked to the rarity of the species and poor attention to the original line drawings of Ehrenberg. This study examines the type material of Navicula iridis and further uses additional material from North America to define the species Neidium iridis.

Methods – Mica and material from Christian Gottfried Ehrenberg’s Collection were studied to examine Navicula iridis. Light and electron microscope techniques were used to document the variability of valve morphology of original material in comparison with other fossil and recent materials.

Key results – Ehrenberg designated no nomenclatural type for Navicula iridis at the place of its first description, and until recently the original material was not studied. One freshwater extant locality was identified (New York, West Point) in the original 1843 publication, and in his notes and drawings. Examination of the micas and material from the type locality, showed that Navicula iridis was very rare. Two specimens were found that matched the line drawing presented by Ehrenberg. In addition, we examined Ehrenberg’s original material with SEM, as well as two other localities in North America and present LM and SEM documentation of additional valve forms. A further evaluation of the status of Neidium columnaris, Neidium maximum and an unknown taxon in relation to Neidium iridis is presented.

Conclusions – The findings of this study elucidate the taxon Navicula iridis (= Neidium iridis) as described by Ehrenberg in 1843. This will assist in the identification of other large Neidium taxa which to date have been associated with Neidium iridis.
Rampant homoplasy and adaptive radiation in pennate diatoms
Authors: Kociolek J. Patrick , Williams David M. , Stepanek Joshua , Liu Qi , Liu Yan , You Qingmin , Karthick Balasubramanian , Kulikovskiy Maxim
Published: July 2019

Background and aims – We examine the possibility of the independent evolution of the same features multiple times across the pennate diatom tree of life.

Methods and key results – Features we have studied include symmetry, raphe number and amphoroid symmetry. Phylogenetic analysis, with both morphological and molecular data suggest in each of these cases that the features evolved from 5 to 6 times independently. We also look at the possibility of certain features having evolved once and diagnosing large genera of diatoms, suggestive of an adaptive radiation in genera such as Mastogloia, Diploneis and Stauroneis.

Conclusion – Formal phylogenetic analyses and recognition of monophyletic groups allow for the recognition of homoplasious or homologous features.