bluuebunny/crossref_metadata_2025 huggingface dataset:
Kelayakan kualitas air kolam di lokasi pariwisata Embung Klamalu Kabupaten Sorong Provinsi Papua Barat
Authors: Yumame Rut Yullyn , Rompas Robert , Pangemanan Penky N.L
Published: July 2019

The purpose of research was to analyze water quality parameters including temperature, brightness, pH, dissolved oxygen, alkalinity, and carbon dioxide in tourism area Embung Klamalu, Sorong Regency, West Papua Province. Measurement of water parameters was done in situ and in laboratory. It was found that on week two measurement, water temperature ranged from 27.2 to 28.9 ˚ C in the morning and 28.2 to 30.2 ˚C in the afternoon; brightness from 6.0 to 0.7 and from 7.0 to 7.8, pH 6.0 to 6.8 and from 7.0 to 7.8, DO from 6.10 to 7.35 mg/L; total alkalinity 100 – 160 mg /L and 100 - 140mg/L, carbon dioxide 50.92 to 85.93 mg/L and 55.90 to 75.92 mg/L. It was concluded that parameters of pond water in tourism area Embung Klamalu were still in suitable for aquaculture activity. Keywords: water quality, pond, Embung Klamalu, Sorong Regency
Detection of the presence Aeromonas sp on nile tilapia cultured in floating net cage in lake Tondano
Authors: Tantu Wandalia , Tumbol Reiny A , Longdong Sammy N.J
Published: July 2019

The purpose of this study was to detect the presence of bacteria Aeromonas sp in tilapia (Oreochromis niloticus). Nine fish with an average body weight of 150-200 g were used in this study as samples. Sampling was conducted at three different locations which were representative of fish culture sites located on Lake Tondano. The number of sample gathered from each location was and 3 fish which were taken randomly. Fish samples were taken by using a scoop, then the samples were taken alive by placing in an oxygen-filled plastic separately and taken direcly to lab Fish Disease Control and Environmental Center, Tateli, Department of Marine and Fisheries of North Sulawesi province, for examination the presence of bacteria. Isolation of bacteria were conducted by taking samples from gill and kidney. This study was carried out from April - July 2013. Identification of the presence of bacteria was done through a series of observations of colony morphology and gram staining of bacteria, followed by a series of biochemical tests: oxidase test , catalase test , test TSIA , H2S production test , indole test , motility test , citrate test, and test O/F. It could be concluded that 22.22 % of farmed nile tilapia in Lake Tondano were infected with the Aeromonas sp with the following percentage from each site: Paleloan village 7.40% , 7.40% Toulimembet village, and 7.40% Eris village. Keywords: Aeromonas sp, isolation, nile tilapia, floating net cage, Lake Tondano
Pertumbuhan ikan kuwe putih Caranx sexfasciatus di karamba jaring apung yang diberi pakan rucah dengan bahan tambahan yang berbeda
Authors: Mansauda Grace F , Sampekalo Julius , Lumenta Cyska
Published: July 2019

The use of trash fish ( Treatment A ), trash fish + cassava( Treatment B), pellets+ trash fish ( Treatment C ) and a mixture of trash fish + cassava + pellets ( Treatment D ) as feed had been conducted to evaluate its effect on growth of Caranx sexfasciatus. This research was carried out inTelengen Bay waters, Central Tabukan District, Sangihe Islands Regency. Fish with weighing 60,9 -62,9 g were distributed in 12 net cages measuring 3x1x1 m with the density of 5 fish each. Fish were fed three times a day for seven weeks. Fish weight was measured every week. At the end of experiment, the individual weight of fish ranged from 168,7 to 222,8 g in with the highest average weigth gain was achieved in treatment A namely 222.8 g (354.2%)), followed by treatment C 178.0 g (286.6 %) treatment D 170.08 g (280.5%), and treatment B as much as 168.7 g (274.3%). Statistical analysis displayed that weight gain of fish in treatment A was significantly different as compared to that of treatments B, C, and D. There was no significant differencesbetween treatment B, C, and D. Food conversion ratio of treatment A was significantly different compared to other treatments. Food conversion ratio of treatment A was 2.80, B 4.25, C 3.70, D 3.88. as conclusion, the use of trash fish without supplementaion with others ingradients resulted in the highest absolute and relatif growth of fish and the lowest food conversion ratio of 2.80 as compared to other treatments. Keywords: Caranx sexfasciatus, weight gain, food conversion ratio, floting net cage
Identifikasi Penyakit Bakterial Pada Benih Sidat (Anguilla marmorata) di Balai Budidaya Air Tawar Tatelu
Authors: Kusen Kevin Octavian , Tumbol Reiny A , Manoppo Henky
Published: July 2019

This study aimed to identify the bacterial disease in cultured eel elvers (Anguilla marmorata). The samples used for this study were taken from the Tatelu Freshwater Aquaculture Center. The samples taken were elvers (juvenile life stage of A. marmorata)  which showed clinical symptoms of bacterial infection such as bleeding in the chest, abdomen, and the base of the fin, passive movement, weakness, and loss of balance of the body, loss of appetite, some wounds on back fin, chest, and tail, and the body was not slippery/shiny. Three elvers with the size of 4-6 cm, and weigh about 0.2 g were taken as samples. The organ chosen to be targeted for isolation was head kidney. Each sample was isolated twice as replicates and streaked on Triptic Soy Agar (TSA) medium. First replicates were identified in the Tatelu Health Lab of Freshwater Aquaculture, and the second replicates were identified in North Sulawesi Provincial Health Lab. Bacterial identification was done through a series of observations and morphology of bacterial colonies through gram stain, followed by biochemical tests through oxidase test, catalase test, Triple Sugar Iron Agar (TSIA) test, H2S production test, motility test, O/F test, and Simmons Citrate Agar (SCA) test. Water quality parameters that were measured included temperature, disolve oxygen, pH, and ammonia. Based on identification of bacteria in cultured elvers in Tatelu Freshwater Aquaculture Center, the elver samples had been infected with bacterial  Aeromonas hydrophila. Keywords: elver, identification, Aeromonas hydrophila, Tatelu Freshwater Aquaculture Center
Kondisi Lingkungan Perairan dan Rumput Laut Kappaphycus alvarezii yang Dibudidayakan di Desa Jayakarsa, Kabupaten Minahasa Utara, Provinsi Sulawesi Utara
Authors: Rahman Abdul , Kolopita Magdalena E.F
Published: July 2019

This research intended to study the condition of waters and seaweed cultured at Jayakarsa village.  Sampling sites were  station 1: near the mangrove area, station 2: at seaweed culture area and station 3: at the former seaweed culture area.  Data collected were water quality parameters and condition of seaweed.  Water quality parameters obtained were then compared to standard water quality by Bakosurtanal (1996).  As conclusion, water quality at Jayakarsa village was feasible for seaweed culture.   Keywords: Desa Jayakarsa, seaweeds, area suitability, water quality
Sintasan Dan Pertumbuhan Larva Ikan Ikan Lele (Clarias sp) Hasil Penetasan Telur Melalui Penambahan Madu Dalam Pengenceran Sperma
Authors: Mambrasar Pulinus , Monijung Revol , Kalesaran Ockstan , Watung Juliaan Ch
Published: July 2019

The purposes of research were to determine the survival and growth of catfish larvae (Clarias sp) produced from eggs using honey in sperm dilution.  Sperm dilution was prepared by disolving honey (0 mL; 0,6 mL; 0,65 mL; dan 0,7 mL) in 100 mL, 99,4 mL; 99,35 mL dan 99,3 mL NaCl respectively. The research was conducted using Complete Randomized Design (CRD) with four treatments each with three replications. Research results showed that survival of larvae at treatment D was the highest (81,33%), followed by treatment C (75%) and B (72%) and the lowest was treatment A (63.67%). The highest absolute length growth was achieved at treatment D (1.73 cm) followed by treatment C (1.40 cm), B (1.10 cm) and the lowest was treatment A (1.03 cm). It could be concluded that supplementation of honey in sperm dilution influenced the survival and growth of catfish larvae Keywords: honey, Clarias sp, sperm dilution, survival, growth
Telaah Kandungan Logam Berat Merkuri (Hg) Di Sekitar Teluk Manado (Analysis Heavy Metal Content of Mercury (Hg) Around the Bay of Manado)
Authors: Selayar Nur Asia , Tumembouw Sipriana , Mondoringin Lukas L.J.J
Published: July 2019

This study aims to analyze the parameters of physics, chemistry and metal content of mercury and determine the condition of water quality around the Bay of Manado. The tools used in this study consisted of a sample bottle, thermometer, pH meter, pen and camera. Research materials include water samples, aqua, ice cubes, tissue. The Sampling technique using sampling methods “purposive random” with 4 point sampling locations. Namely the location of the sampling site 1 (Manado Harbor), location 2 (region MTC), location 3 (region Prof. Dr. Kandouw Hospital) and location 4 (Malalayang coastal areas). Samples were analyzed in the Laboratory of Industrial Research Standardization Manado (BARISTAND). The results of the analysis of mercury in waters around Manado Bay using Atomic Absorption Spectrofotometer (AAS) obtained results undetectable (nil). The value of the analysis the temperature at the point I – IV range from 28 0C– 300C and pH values ranging from 7 – 9. The condition of water at four point research is still below threshold quality Standards Minister of Environment No. 51 2004 (0,001 mg/l). Keywords:  Mercury, temperature, pH, water Quality, Manado Bay
Kejutan suhu pada penetasan telur dan sintasan hidup larva ikan lele (Clarias gariepinus)
Authors: Aer Christo V S , Mingkid Winda M , Kalesaran Ockstan J
Published: July 2019

The aim of this study was determine the effect of temperature shock on hatching capability of the catfish eggs and its larval survivals.The study was conducted at the Board of Freshwater Aquaculture (BBAT ) in Tatelu  Dimembe District, North Minahasa Regency, North Sulawesi Province. Twelve tanks were set in this experiment. Two hundred (200) eggs were put in each tank with controlled temperature of 25 C, 27 C , 29 C , and 32 ºC. Each temperature was replicated 3 times. The experimental design used in data analysis was completely randomized design (CRD).  The results showed that the treatment temperature showed significant effect on  hatching of  eggs, while the difference in temperature had no effect on the survival rate of catfish larvae.   Keywords:  Temperature shock, eggs, hatching capability, survival rate,  larvae, Clarias gariepinus.
Pertumbuhan dan kelangsungan hidup larva gurami (Osphronemus gouramy) dengan pemberian beberapa jenis pakan
Authors: Lucas Weismann G.F , Kalesaran Ockstan J , Lumenta Cyska
Published: July 2019

This study aimed to determine the effect of several different types of feed on absolute length growth, relative length growth, and survival rates are gouramy larvae (Osphronemus gouramy). This study used four treatments, with three replications. The treatments tested were four different types of feed on the larvae of gouramy, among others; feed worms Tubifex sp., Artemia sp.,boiled chicken egg yolk and finely pelleted feed FF-999. The experimental design used was completely randomized design.      The results showed that different types of feed provided a significant influence on the absolute length growth, relative length growth and survival of larval gouramy (Osphronemus gouramy). Feed worms Tubifex sp. give the best results with an absolute value growth of 1.34 cm length, relative length of 148.87% growth, and survival of 34%. Feed worms Tubifex sp. is the best feed in promoting growth and improving survival of larval gouramy (Osphronemus gouramy).   Keywords : Larvae,  gourami, Tubifex, Artemia, feed
Penambahan bakasang pada pakan benih sidat (Anguilla marmorata) untuk meningkatkan sistem imun non spesifik
Authors: Pinoke Steven A.J , Tumbol Reiny A , Kolopita Magdalena E.F
Published: July 2019

This study was aimed to examine the effect of immunostimulant bakasang (fermented product from fish) and to determine the optimal dose of bakasang in increasing the non-specific immune response of eels. The eels were obtained from Institute of Freshwater Aquaculture (BPBAT) Tatelu. Bakasang as immunostimulant ingredient contained Lactic Acid Bacteria (LAB) with the bacteria concentration of 105 CFU/ml was prepared by diluting with clean water to get the doses desired. The feed was subsequently mixed with the commercial fish feed in powder form and mixed well with water to form paste. This research used Two-ways ANOVA with 4 different types of treatments A (0 ml/kg feed),   B (50 ml/kg feed), C (100 ml/kg feed), D (150 ml/kg feed) and 3 repetitions. The fish were feed with treatments diets for 3 weeks with a dose of 3% body weight per day with a frequency of twice a day (at 08:00 am) and the afternoon (16.00 pm). The parameters measured was Total Leukocyte Count (TLC) which was measured every week (t0, t1, t2, t3). The results indicated that the addition of bakasang on eels’feed gave a significant increased on TLC, and that the highest TLC was found in the dose of 100 ml/kg feed. This shows that the optimal dose of bakasang in increasing the TLC of eels  was 100 ml/kg feed after administration of 3 weeks. Keywords: Eels, Bakasang, Total Leucocytes Count
Pakan diameter berbeda bagi pertumbuhan benih sidat (Anguilla sp)
Authors: Airin Dairi Y.L , Lumenta Cyska
Published: July 2019

The objective of research was to establish the effect of different powder diameter on growth, efficiency value and daily consumption of eel seed. This research was conducted at the Laboratory of Aquaculture Technology, Faculty of Fisheries and Marine Sciences Sam Ratulangi University. Experimental design used was Complete  Randomized Design with four treatments, each with three replication.  Variables analysed consisted of relative growth, specific growth rate, feed efficiency value and daily comsumption.  Results showed that treatment A with poder diameter of 0.125 mm displayed the best relative growth (105.356%), Specific growth (1.29%), feed efficiency value (6,431%), and daily consumption (0.813%). AS conclusion, feed with diameter 0.125 mm was utilized effectively by eel seed.   Keywords: relative growth, specific growth rate, feed efficiency value. and daily comsumption, Anguilla sp
Iptek bagi Masyarakat (IbM) Kelompok Petani Ikan Kelurahan Rap Rap
Authors: Kalesaran Ockstan J. , Lantu Sartje
Published: July 2019

The implementation of science and technology for society aimed to give knowledge and methods of application that can answer all problems encountered by fish farmers. Low cost of  feed manufacturing methods and high quality utilizing local raw ingredients had been given through counseling and basic training so that fish farmers can continue going forward and do not rely on commercial feed from the market.  Practical sex reversal methods were given, intended that fish farmers could get male tilapia seeds having rapid growth.   Keywords: Fish farmer, Rap Rap Village, feed, eeed, Sex Reversal Methods
Pertumbuhan rumput laut (Kappaphycus alvarezii) yang dibudidaya dalam kantong jaring dengan berat awal berbeda di Teluk Talengen Kepulauan Sangihe
Authors: Sahabati Susanty , Mudeng Joppy D. , Mondoringin Lukas L.J.J.
Published: July 2019

The research aimed to study the growth  of seaweed Kappaphycus alvarezii cultured for 42 days  (from May to June 2016) in net pen with different initial weights at Talengen Bay, Island of Sangihe, North Sulawesi Province. The research used Complete Randomized Design with three treatments, each with three replication. The treatments included A: 50 g, B: 100 g, and C: 150 g of initial weight. Data collected were absolute, relative and daily growth.  Data were analyzed using analysis of variance and Least Significance Different Test was used to determine the difference between treatments.  Statistical analysis used JMP (SAS-institute). Research results showed the best absolute growth was achieved in treatment C namely 300.55 g, the best relative growth was observed  in treatment A as much as 284.78% and the best daily growth rate was in treatment A as much as 3.26%. Keywords:  seaweed, net pen, absolut growth, relative growth, daily growth
Pemanfaatan tepung cangkang kijing taiwan untuk pertumbuhan kijing taiwan (Anodonta woodiana)
Authors: Runtu Raymond Y.A. , Lumenta Cyska , Sampekalo Julius
Published: July 2019

The purpuse of this research was to determine the effect of shell powder of Taiwanese mussel (Anodonta woodiana) at different doses on absolute growth, relative growth and survival rate of Taiwanese mussel. The treatment dosages of shell powder included A: 0 ppm,  B: 10  ppm, C: 20 ppm, D: 30 ppm, and E: 40 ppm. Experimental design used was Complete Randomized Design with five treatments, each with three replications.  The results showed that supplementation of 40 ppm of shell powder resulted in the best absolute growth and relative growth, namely 0.475 g and 1.84% respectively. Survival rate of Taiwanese mussel in all treatments during the experimental period was 100%.   Keywords:  Anodonta woodiana, Taiwanese mussel, shell powder, absolute growth, relative growth, survival rate
Budi daya cacing sutra (Tubifex sp.) dengan sistim air mengalir di Balai Perikanan Budidaya Air Tawar Tatelu (BPBAT), Propinsi Sulawesi Utara
Authors: Ngatung Jefrikardus E. E. , Pangkey Henneke , Mokolensang Jeffrie F.
Published: July 2019

The field work training of silk worm culture was done in one month at Balai Perikanan Budidaya Air Tawar Tatelu (BPBAT), Province of North Sulawesi, from May to June, 2016.  The media used are poultry dung (chicken manure) and EM4 with a flowing water system and fed with additional tofu waste.  The initial spread of silk worm seeds was 75 g / m2, and the results obtained were silk worm biomass of 150 g / m2, with the measurement of water quality parameters for DO, temperature and pH are respectively 1.61 ppm, 24.4-27.7° C and 6.1-7.3.Keywords:  aquaculture, life feed, silk worm, Tubifex sp., water quality
Isolasi bakteri probiotik Lactobacillus sp dari usus ikan mas (Cyprinus carpio)
Authors: Novitarizky Intan A. , Manoppo Henky , Longdong Sammy N.J.
Published: July 2019

The objective of research was to isolate the probiotic bacteria from intestine of carp.  Isolation was performed by weighing 1 g of intestine, crushed and inserted in a reaction tube containing 9 mL of NaCl then centrifuged. Supernatant was taken and spread over the agar medium by scatter method. The bacteria-stocked medium was then incubated in an incubator at 28°C for 24-48 hours. The growing colonies were re-isolated on the agar medium to obtain pure colonies. The bacteria were then identified by morphological observation, resulting pigment and gram staining. Five nile tilapia (sized 8 – 10 cm) were used in pathogenicity test and placed in the aquarium. Fish were injected with 0.2 ml of Lactobacillus solution containing 1x107 CFU/mL via intraperitoneal injection. The results showed that the bacteria Lactobacillus sp had rod-shaped characteristics, white pigment and gram positive and  not pathogenic, which means it can be used as probiotic for aquaculture.Keywords : Lactobacillus sp, carp, probiotic, pathogenicity test
Penggunaan bakteri probiotik untuk pencegahan infeksi bakteri Streptococcus agalactiae pada ikan Nila, Oreochromis niloticus
Authors: Umasugi Aisin , Tumbol Reiny A. , Kreckhoff Reni L. , Manoppo Henky , Pangemanan Novie P.L. , Ginting Elvi L.
Published: July 2019

This study aimed to evaluate the effect of probiotic on growth and survival of tilapia (Oreochromis niloticus) against Streptococcus agalactiae infection. The test materials used were commercial probiotic bacteria and Streptococcus agalactiae. The probiotic bacteria were administered by mixing into the feed with a dose of 0 mL (without probiotics), 10 mL / kg of feed, 15 mL / kg of feed and 20 mL / kg of feed.  Feed was given 3 times a day at 08.00, 12.00 and 16.00 for 21 days. After that, the challenge test was done with Streptococcus  agalactiae bacteria by cohabitation. Bacteria with a density of 107 cells / mL were mixed into the water and allowed for 2 hours. The result showed that B treatment (10 mL / kg of feed) gave the best result with 93,33 percent of  survival rate. Statistical analysis showed that the survival of fish in treatments B, C and D was significantly different from treatment A (P <0.1). However, there was no significant difference between treatments B, C, and D. It was also found that the addition of probiotic in feed did not affect the growth of Nile tilapia (Orechromis niloticus). Keywords : Probiotic bacteria,  nile tilapia,  Streptococcus  agalactiae, growth,  infection
Preferencias TRATADOS HIPOCRÁTICOS SOBRE LOS AIRES AGUAS Y LUGARES
Authors: Galimberti Oliveira María Cecilia
Published: July 2019

Este artículo estudia el Tratado Hipocrático sobre Aires, Aguas y Lugares escrito por Hipócrates. Se analiza la influencia que ejerce el ambiente en la conducta del individuo, donde el médico hipocrático presta atención no solo al cuerpo del enfermo, sino a todo el universo cósmico: tierra, agua, clima, estaciones del año y vientos. Se estudia la visión pronostica de la medicina hipocrática, basada en el conocimiento racional de la enfermedad y la relación entre diagnóstico y pronóstico. Finalmente, se analiza la influencia de la teoría antropológica cuando estudia los patrones culturales de la gente, las formas de pensar y actuar, las costumbres y el carácter del individuo, factor que debe ser tomado en cuenta por el médico hipocrático.
HIDRANENCEFALIA
Authors: Venturo Castro Willans
Published: July 2019

La hidranencefalia representa la más severa de las lesiones destructivas del SNC, seguida de la porencefalia y de la esquizencefalia (1). Es una de las malformaciones cerebrales que se presenta desde el final del tercer trimestre de gestación hasta los 2 años de edad, caracterizada por compromiso isquémico, especialmente en la circulación cerebral anterior, que induce a destrucción del parénquima cerebral y cavitación. Se presenta el caso de una gestante adolescente de 16 años de edad con diagnóstico ecográfico prenatal de hidranencefalia, confirmado por estudio tomográfico post nacimiento. Se presenta el presente artículo por tener baja incidencia esta patología, siendo 1 a 2 casos por cada 10 000 nacimientos.
Evaluación de los efectos de croton lechleri en la candidiasis vulvovaginal
Authors: León Hoyos Félix Ajejandro , Ramos Dueñas Dante Erick , Motta Rodríguez Juan Wilder
Published: July 2019

Introducción. El objetivo del presente estudio fue determinar y comparar los efectos benéficos de Croton Lechleri y clotrimazol en crema en el tratamiento de la candidiasis vulvovaginal, en pacientes del centro de salud del distrito de Pillcomarka, Huánuco. Métodos. Fueron elegidas para el estudio mujeres en edad fértil, con síntomas de candidiasis vulvovaginal y observación de pseudomicelos en la microscopía. Asignamos a las pacientes de forma no aleatoria en 2 grupos de tratamiento tópico; un grupo recibió croton y el otro recibió clotrimazol. Se extrajo una muestra de sangre y orina antes de iniciar y al finalizar el tratamiento. Resultados. Incluimos 30 pacientes en el presente estudio. Del total de remisiones de leucorrea el 44,4% perteneció al grupo experimental (croton) y el 55,6% al grupo control (clotrimazol) [OR=8,68 (IC95% 0,41; 184,28) p < 0,22)], y de las remisiones del prurito el 44,4% perteneció al grupo experimental y el 55,6% al grupo control [OR=8,68 (IC95% 0,41; 184,28) p < 0,22)]. Con respecto a los exámenes microscópico no patológicos el 44,4% perteneció al grupo experimental y el 55,6% al grupo control [OR=0,20 (IC95% 0,02; 2,05) p < 0,22)] y de todos los cultivos no patológicos el 46,4% perteneció al grupo experimental y el 53,6% al grupo control [OR=0,24 (IC95% 0,03; 3,13) p < 0,41)]. Los resultados post tratamiento de la analítica sanguínea y examen orina, no mostraron diferencias significativas en el grupo experimental frente al grupo control. Conclusiones. No hubo diferencias significativas en los resultados post tratamiento del uso de croton frente al uso del clotrimazol.
Depresión y factores asociados en adolescentes de un colegio de la ciudad de Huánuco, Perú
Authors: Bustillos-Cotrado Anthony , Laguna-León Edgard
Published: July 2019

Introducción: El objetivo del presente estudio fue Determinar la relación entre depresión y tres factores asociados (disfunción familiar, imagen corporal distorsionada y acoso escolar) en los adolescentes de un colegio secundario de la Ciudad de Huánuco en Perú, en octubre del 2016. Métodos: Estudio analítico transversal en una muestra aleatoria estratificada de 169/203 adolescentes del tercero al quinto grado de secundaria. Se aplicó la Escala de Depresión en Adolescentes de Reynolds (EDAR) para medir la variable dependiente y otros cuestionarios, para los factores asociados. Resultados: El 18,9% de los estudiantes presentó depresión; la disfunción familiar se encontró en 75,7%; el 68% presentó imagen corporal distorsionada; el 18,9% manifestó Bullying; se evidenció depresión en 5,7% de los varones y en 22,4% de las mujeres. Los siguientes factores asociados presentaron relación significativa con depresión: disfunción familiar (p=0,037), imagen corporal distorsionada (p=0,020) y género (p=0,028). Conclusiones: El estudio identificó un porcentaje importante de adolescentes que padecen depresión. Sobresalieron la imagen corporal distorsionada y la disfunción familiar como factores asociados. No se encontró ninguna relación entre depresión y acoso Escolar.
Factores de riesgo para sepsis neonatal temprana en el Hospital Hermilio Valdizán Medrano. Huánuco, Perú. 2016
Authors: Falcón-Fabian Melchor , Ventura-Lorenzo Gabriel
Published: July 2019

Objetivo: Determinar los principales factores de riesgo asociados a sepsis neonatal probable temprana. Metodología: Se realizó un estudio de tipo observacional, analítico, retrospectivo de casos y controles. Los casos fueron 71 recién nacidos diagnosticados con sepsis probable temprana asociado a uno o más de los factores en estudio; y el grupo de controles: 71 neonatos sin sepsis neonatal probable temprana con uno o más de los factores en estudio, los datos fueron recogidos de las historias clínicas. El análisis bivariado de los factores de riesgo evaluados, el bajo peso al nacer, infección del tracto urinario materno en el tercer trimestre y rotura prematura de membrana, se realizó a través de la prueba de Chi-2, Odds ratio con un nivel de confianza al 95%. Para el análisis comparativo de las variables cuantitativas se utilizó la prueba U de man whitney. Resultados: En el análisis bivariado se identificaron como factores de riesgo a la infección del tracto urinario materno (OR = 2,515, 95% IC = 1,246 – 5,075, p=0,00), bajo peso al nacer (OR=3,5, 95% IC= 1,65-7,84, p=0.01), la ruptura prematura de membranas no resultó estadísticamente significativa (OR=0,7, 95%IC=0,31-1,7) Conclusiones: La infección del tracto urinario y el bajo peso al nacer fueron los factores de riesgo más importantes en este estudio para el desarrollo de sepsis neonatal probable temprana.
Variability in the Position of the IBEX Ribbon over Nine Years: More Observational Evidence for a Secondary ENA Source
Authors: Dayeh M. A. , Zirnstein E. J. , Desai M. I. , Funsten H. O. , Fuselier S. A. , Heerikhuisen J. , McComas D. J. , Schwadron N. A. , Szalay J. R.
Published: July 2019

The ribbon of enhanced energetic neutral atom flux, discovered by the Interstellar Boundary Explorer (IBEX) in 2009, has redefined our understanding of the heliosphere’s interaction with the local interstellar medium (LISM). Yet, its origin continues to be a topic of scientific debate. The ribbon is circular and traces the region where the putative LISM magnetic field (B
LISM) is perpendicular to the radial direction from the Sun. Using nine years of IBEX-Hi observations, we investigate the ribbon circularity and location as functions of time and energy. We provide updated locations of the ribbon center at five energy passbands (centered at 0.7, 1.1, 1.7, 2.7, and 4.3 keV) in ecliptic coordinates [longitude, latitude]: [217.°41 ± 0.°95, 44.°36 ± 0.°93], [219.°72 ± 0.°95, 41.°50 ± 0.°87], [220.°51 ± 1.°19, 39.°96 ± 1.°00], [218.°08 ± 1.°66, 38.°44 ± 1.°24], and [214.°68 ± 1.°48, 34.°13 ± 1.°19] respectively. The weighted mean center location over all energies and all years is [218.°33 ± 0.°68, 40.°38 ± 0.°88] and its radius is 74.°81 ± 0.°65. As viewed by IBEX at 1 au, we find that (1) the ribbon is stable over time, with distinct centers at each energy; (2) ribbon centers exhibit small temporal variations, likely caused by the solar wind (SW) speed and density variations; and (3) ribbon location in the sky appears to be driven by (i) the inherent alignment of the ribbon centers along the plane connecting the presumed B
LISM and the heliospheric upwind direction, and (ii) the variable SW structure along the heliographic meridian, further emphasizing that the ribbon source is outside the heliosphere.
Radiation-mediated Shocks in Gamma-Ray Bursts: Subshock Photon Production
Authors: Lundman Christoffer , Beloborodov Andrei M.
Published: July 2019

Internal shocks provide a plausible heating mechanism in the jets of gamma-ray bursts (GRBs). Shocks occurring below the jet photosphere are mediated by radiation. It was previously found that radiation-mediated shocks (RMSs) inside GRB jets are inefficient photon producers, and the photons that mediate the RMS must originate from an earlier stage of the explosion. We show that this conclusion is valid only for nonmagnetized jets. RMSs that propagate in moderately magnetized plasma develop a collisionless subshock that locally heats the plasma to a relativistic temperature, and the hot electrons emit copious synchrotron photons inside the RMS. We find that this mechanism is effective for mildly relativistic shocks and may be the main source of photons observed in GRBs. We derive a simple analytical estimate for the generated photon number per proton, Z, which gives Z = 105–106, consistent with observations. The number is controlled by two main factors: (1) the abundance of electron–positron pairs created in the shock, which is self-consistently calculated, and (2) the upper limit on the brightness temperature of soft radiation set by induced Compton scattering. The photons are initially injected with low energies that are well below the observed GRB peak. The injected soft photons that survive induced downscattering and free–free absorption gain energy in the RMS via bulk Comptonization and shape its nonthermal spectrum.
Comparison of the Asteroseismic Mass Scale of Red Clump Giants with Photometric Mass Estimates
Authors: An Deokkeun , Pinsonneault Marc H. , Terndrup Donald M. , Chung Chul
Published: July 2019

Asteroseismology can provide joint constraints on masses and radii of individual stars. While this approach has been extensively tested for red giant branch (RGB) stars, it has been more difficult to test for helium core–burning red clump (RC) giants because of the lack of fundamental calibrators. To provide independent mass estimates, we utilize a number of widely used horizontal-branch models in the literature and derive photometric masses from a comparison with

photometry. Our selected models disagree with each other on the predicted mass–luminosity–temperature relation. We adopt first-order corrections on colors and magnitudes to minimize the dispersion between different models by forcing models to match the observed location in the solar-metallicity cluster M67. Even for these calibrated models, however, the internal consistency between models deteriorates at higher metallicities, and photometric masses become smaller than asteroseismic masses, as seen from metal-rich field RC stars with Gaia parallaxes. Similarly, the average photometric mass for metal-rich NGC 6791 stars ranges from 0.7 to 1.1 M
⊙, depending on the specific set of models employed. An ensemble average of the photometric masses (0.88 ± 0.16 M
⊙) in NGC 6791 is marginally consistent with the asteroseismic mass (1.16 ± 0.04 M
⊙). There is a clear tension between the masses that one would predict from photometry for metal-rich field RC stars, asteroseismic masses, and those that would be expected from the ages of stars in the Galactic disk populations and canonical RGB mass loss. We conclude that standard RC models need to be reexamined in light of these powerful new data sets.
Testing the Kerr Metric with X-Ray Reflection Spectroscopy of Mrk 335 Suzaku Data
Authors: Choudhury Kishalay , Nampalliwar Sourabh , Abdikamalov Askar B. , Ayzenberg Dimitry , Bambi Cosimo , Dauser Thomas , García Javier A.
Published: July 2019

Einstein’s gravity has undergone extensive tests in the weak field gravitational limit, with results in agreement with theoretical predictions. There exist theories beyond general relativity (GR) which modify gravity in the strong field regime but agree with GR in the weak field. Astrophysical black holes are believed to be described by the Kerr metric and serve as suitable candidates to test strong gravity with electromagnetic radiation. We perform such a test by fitting one Suzaku data set of the narrow-line Seyfert 1 (NLS1) galaxy Mrk 335 with X-ray reflection spectroscopy, using the Johannsen metric to model the black hole spacetime and test for deviations from Kerr. We find the data is best modeled with a hybrid model that includes both partial covering absorption and a reflection component. This is the first time such a model has been proposed for a high-flux (low reflection) Mrk 335 data set. We constrain the Johannsen deformation parameter α
13 to −1.5 < α
13 < 0.6 with spin parameter a
* > 0.8, and the α
22 parameter to −0.4 < α
22 < 2.1 with a
* > 0.7, both at the 99% confidence level. Although additional solutions at large deviations from the Kerr metric show statistical similarity with the ones above, further analysis suggests these solutions may be manifestations of uncertainties beyond our control and do not represent the data. Hence, our results are in agreement with the idea that the supermassive compact object at the center of Mrk 335 is described by the Kerr metric.
A Unique Communicating Arterial Branch between the Celiac Trunk and the Superior Mesenteric Artery: A Case Report
Authors: Fakoya Adegbenro Omotuyi John , Aguinaldo Emilio , Velasco-Nieves Natalia M. , Barnes Erica , Vandeveer Zachary T. , Morales-Marietti Nannette , Afolabi Abayomi Gbolahan , McCracken Thomas
Published: July 2019

BACKGROUND: Many anatomical variations have been associated with the Celiac Trunk, of which most are classified as being asymptomatic. CASE PRESENTATION: In this article, we describe yet another anatomical variation involving the Celiac Trunk, Superior Mesenteric artery and the Inferior Pancreaticoduodenal Artery during routine cadaveric dissection. We identified a fourth branch of the Celiac trunk (quadrification) that communicated with the Superior Mesenteric artery at the point of origin of the Inferior Pancreaticoduodenal artery which we concluded to be the Anterior Inferior Pancreaticoduodenal artery. CONCLUSION: This anastomosis could be essential in the case of occlusion between the Celiac Trunk and the Superior Mesenteric artery.
Nectria-related fungi causing dieback and canker diseases in China, with Neothyronectria citri sp. nov. described
Authors: Yang Qin , Chen Wen-Yan , Jiang Ning , Tian Cheng-Ming
Published: July 2019

To clarify phylogenetic relationships amongst Nectria, Neothyronectria and Thyronectria in Nectriaceae, we examined detailed morphological characters and performed phylogenetic analyses of a concatenated dataset, based on the ITS, LSU, tef1 and tub2 DNA sequences of fungal specimens in China. Four species of nectria-related fungi were identified, i.e. Nectriadematiosa, N.pseudotrichia, Neothyronectriacitri and Thyronectriapinicola. The newly described species, Neothyronectriacitri, is characterised by its ascomatal wall with bright yellow scurf, unitunicate asci, each with 4-spored and ascospores allantoid to short-cylindrical, uniseriate, muriform, hyaline to slightly yellowish-brown. This species has affinities with other one known species of Neothyronectria and can be distinguished by molecular data.
Organisational and economic characteristics of the baby food products market in Ukraine and EU countries
Authors: Krychkovska Aelita , Zayarnyuk Natalia , Lobur Ivanna , Khomenko Olena , Lopatynska Oksana , Hubytska Iryna , Novikov Volodymyr
Published: July 2019

This article presents the results of the study of problematic issues of organisational-and-economic character concerning the provision of children with baby food products in Ukraine and European Union countries. It is established that the marketing feature of baby food products in Ukraine is its sales from pharmacies. It has been proved that the cost of baby food products in EU countries and in Ukraine have no price gradation depending on the degree of economic development of the country. The dynamics of development of the Ukrainian market of baby food products, as well as the dynamics of the cost of baby food products in Ukraine, depending on their dispensing place, have been analysed. It is established that the cost of baby food products is somewhat lower in pharmacies.
Digital resources and didactic methodology in the initial training of History teachers
Authors: Miralles-Martínez Pedro , Gómez-Carrasco Cosme J. , Arias-González Víctor B. , Fontal-Merillas Olaia
Published: July 2019

This paper analyzes the links that exist between the perceptions of teachers-in-training regarding the use of digital resources in the Secondary Education classroom and their own methodological and epistemological conceptions. Shulman’s theories continue to largely guide current research on teacher knowledge. However, the impact caused by the new technologies has inspired new approaches like T-PACK, which put the focus on the teachers’ digital competence. In order to address this goal, information has been collected by means of a questionnaire implemented in 22 universities, 13 Spanish (344 participants) and 9 British (162 participants). The analysis of data was conducted along three phases: a) examination of the structure of assessments regarding the usefulness of digital resources by analyzing latent classes; b) estimation of confirmatory factor models for variable evaluation processes, History as a formative subject and historical competencies; c) estimation of interclass differences by using confirmatory factor models. The results showed four types of response regarding the use of digital resources in the classroom that were polarized about two items: comics and video games. Important interclass differences have likewise been found regarding methodological issues (traditional and innovative practices), as well as less important differences concerning epistemological conceptions and views on the development of historical competencies in the classroom.

El objetivo de este trabajo es analizar los vínculos entre las percepciones del profesorado en formación sobre el uso de los recursos digitales en el aula de Secundaria, y sus concepciones metodológicas y epistemológicas. Las teorías de Shulman siguen orientando en gran medida las investigaciones sobre el conocimiento del profesorado. Sin embargo, el impacto de las nuevas tecnologías ha impulsado nuevos enfoques, como el T-PACK, que incide en la competencia digital docente. Para abordar este objetivo se ha recogido información de un cuestionario implementado en 22 universidades, 13 españolas (344 participantes) y 9 inglesas (162 participantes). Los análisis de datos se realizaron en tres fases: a) exploración de la estructura de las valoraciones sobre la utilidad de los recursos digitales mediante análisis de clases latentes; b) estimación de los modelos factoriales confirmatorios para las variables procesos de evaluación, Historia como materia formativa, y competencias históricas; c) estimación de las diferencias entre clases. Los resultados mostraron cuatro perfiles de respuesta en función de la opinión sobre el uso de los recursos en el aula, y polarizadas en torno a dos ítems: cómics y videojuegos. También se ha podido comprobar importantes diferencias entre clases en cuestiones metodológicas (prácticas tradicionales e innovadoras); y diferencias menos importantes sobre percepciones epistemológicas y de desarrollo de competencias históricas en el aula.
Online political participation of young people in Mexico, Spain and Chile
Authors: de-la-Garza-Montemayor Daniel-Javier , Peña-Ramos José-Antonio , Recuero-López Fátima
Published: July 2019

Digital media are present in all areas of society, even configured as a new space for political socialization. This is especially applicable in the case of young people due to their high use of new technologies, as they are also trained with the necessary skills to do so. In this context, social networks have prompted the emergence of a new type of political participation: which takes place online. Therefore, this study delves into the relationship between the socialization that occurs in the network, digital skills and political participation online and offline. A quantitative survey-based methodology was used with university students from three Ibero-American countries: Mexico, Spain and Chile. The fieldwork was conducted between the months of December 2017 and June 2018. The results obtained show that young people consume mainly digital media, which does not prevent them from being critical with the quality they deserve. In this sense, the political participation actions in which they are involved are mostly developed in the network, thus participating to a lesser extent offline. Therefore, young people enter the world of politics through the consumption of information on the Internet, which favors a subsequent online political participation.

Los medios digitales están presentes en todos los ámbitos de la sociedad, configurándose incluso como un nuevo espacio para la socialización política. Ello es especialmente aplicable en el caso de los jóvenes debido al elevado uso que realizan de las nuevas tecnologías, al estar capacitados también con las habilidades necesarias para ello. En este contexto, las redes sociales han propiciado el surgimiento de un nuevo tipo de participación política: la que tiene lugar de forma online. Por tanto, esta investigación indaga sobre la relación existente entre la socialización que se produce en la red, las habilidades digitales y la participación política en línea y fuera de línea. Se utiliza una metodología cuantitativa a partir de la realización de encuestas a jóvenes universitarios de México, España y Chile. El trabajo de campo se desarrolló entre los meses de diciembre de 2017 y junio de 2018. Los resultados obtenidos muestran que los jóvenes consumen principalmente medios digitales, lo cual no impide que sean críticos con la calidad que merecen los mismos. En relación con ello, las acciones de participación política en las que se implican se desarrollan en su mayoría en la red, participando así en menor medida fuera de línea. Por tanto, los jóvenes se introducen en el mundo de la política a través de Internet mediante el consumo de información, lo que favorece una posterior participación política online.
Safe and inclusive educational apps: Digital protection from an ethical and critical perspective
Authors: Crescenzi-Lanna Lucrezia , Valente Riccardo , Suárez-Gómez Rafael
Published: July 2019

The mediated use of technology fosters learning from early childhood and is a potential resource for inclusive education. Nevertheless, the huge range of options and exposure to interactive digital content, which is often online, also implies a series of risks. The definition of protection underlying the current strategies to protect children is inadequate as it only extends to reducing children's exposure to harmful content. This study proposes the expansion of this definition. Through systematic observation of 200 apps within the Catalan sphere for children under 8 years of age and principal component analysis, the results support a multidimensional conceptualisation of protection which, instead of being restricted to the potential risks, also considers aspects related to the educational and inclusive potential of digital resources. Five factors are suggested in order to select these resources and contribute to the digital competence of teachers and students. The first factor concerns the use of protection mechanisms and the existence of external interference, the second factor indicates the presence of adaptation tools; the exposure to stereotypes corresponds to the third factor and the last two consider the previous knowledge required and the verbal component of the apps. Finally, the scope of the suggested definition and its limitations as a guide for future analysis will be discussed.

El uso mediado de la tecnología fomenta el aprendizaje desde la infancia y representa un potencial recurso para la educación inclusiva. Al mismo tiempo, la creciente exposición a contenidos digitales interactivos, a menudo conectados a la red, conlleva una serie de riesgos para los niños. A las estrategias actualmente empleadas para protegerlos, que se limitan a reducir su exposición a contenidos perjudiciales, parece subyacer una definición de protección inadecuada. Esta investigación propone que se amplíe esta definición. A través de una observación sistemática de 200 apps para menores de ocho años en el ámbito catalán y un análisis de componentes principales, se propone una definición multidimensional de protección que no se limita a detallar los riesgos potenciales, sino que también considera aspectos relacionados con el potencial educativo e inclusivo de los recursos digitales. Se sugieren cinco factores a considerar para seleccionar estos recursos y contribuir a la competencia digital de docentes y alumnos. El primer factor concierne al uso de mecanismos de protección y la existencia de interferencias externas; el segundo factor indica la presencia de herramientas de adaptación; la exposición a estereotipos corresponde al tercer factor y los últimos dos consideran los conocimientos previos requeridos y el componente verbal de las apps. Finalmente se discute el alcance de la definición propuesta y sus limitaciones para guiar análisis futuros.