bluuebunny/crossref_metadata_2025 huggingface dataset:
Diferencias por sexo en higiene del sueño en niños en edad escolar
Authors: Granillo Ávila M. , Valencia Ortiz AI , García Cruz R. , Ortega Andrade NA , Santana Vargas AD
Published: December 2017

La higiene del sueño se define como una serie de conductas, condiciones ambientales y factores relacionados con el sueño que pueden ser modificados para promover la cantidad y calidad del sueño (American Academy of Sleep Medicine [AASM], 2005) . En la población infantil se ha asociado con la regulación de la energía, control metabólico, endocrino, regulación emocional, consolidación de aprendizaje, memoria, entre otros (Lam, Hiscock & Wake, 2003). En los niños el impacto de no tener una buena calidad de sueño se refleja en bajo aprovechamiento escolar, alteraciones del crecimiento, problemas conductuales, creando factores de riesgo importantes para su salud y modificando la calidad de vida de la familia (Halal & Nunes, 2014) .  A pesar de la relevancia que tiene la higiene del sueño, son pocos los estudios enfocados en comprender y promover estas conductas, las cuales se desarrollan desde la infancia (Meltzer et al., 2014) .  El objetivo de este estudio fue conocer los patrones de Higiene del Sueño y las diferencias por sexo en infantes de edad escolar, utilizando el Reporte Infantil de Patrones de Sueño (CRSP) (Meltzer, et al., 2013). Con una muestra de 235 niños y niñas en edad escolar del estado de Hidalgo. Se realizó análisis descriptivo para conocer las diferencias entre los grupos. Los resultados se discuten en términos de las diferencias de género en las conductas de Higiene de Sueño en la Infancia.
Programa de intervención multimodal cognitivo conductual para modificar higiene del sueño en niños y padres
Authors: Granillo Ávila M. , Valencia Ortiz AI , Orozco Calderón G. , Santana Vargas AD
Published: December 2017

La higiene del sueño se define como una serie de conductas, condiciones ambientales y factores relacionados con el sueño que pueden ser modificados para promover la cantidad y calidad del sueño (American Academy of Sleep Medicine, 2005). En la población infantil esta variable se asocia con la regulación de la energía, control metabólico, endocrino, regulación emocional, consolidación de aprendizaje, memoria, entre otros (Lamp & Hiscock, 2003; Escobar et al. 2013). En los niños el impacto de no tener una buena calidad de sueño se refleja en bajo aprovechamiento escolar, alteraciones del crecimiento, problemas conductuales, creando factores de riesgo importantes para su salud y modificando la calidad de vida de la familia (Corgosinho et al. 2011). El objetivo de este estudio es desarrollar y evaluar el nivel de efectividad de un programa de intervención multimodal cognitivo-conductual para modificar la higiene del sueño en niños y padres del estado de Hidalgo. Es un estudio explicativo, con diseño cuasi experimental, pre prueba-post prueba con grupo control. El programa consta de tres fases, en la primera fase se realizó la adaptación y validación del instrumento “Reporte Infantil de Patrones del Sueño” (CRSP) adaptado por Granillo, Valencia, Martínez & Santana, 2015 (en prensa), por sus siglas en inglés The Children’s Report of Sleep Patterns (Meltzer, et al. 2013). Posteriormente, se realizó el diseño del Programa de Intervención basado en los principios de la terapia cognitivo-conductual, así como el desarrollo de una aplicación electrónica para poder reforzar aspectos conductuales. Y por último, se aplicará el programa de intervención. En este trabajo se reportan los resultados de la primera fase del estudio. Participaron 332 niños y niñas, de escuelas privadas del municipio de Pachuca de Soto, Hidalgo. Mediante un muestro no probabilístico intencional, de los cuales hubo 185 niñas (55.7%) y 147 niños (44.3). El rango de edad fue de 8 a 12 años. Dentro de los resultados preliminares de la prueba se llevó a cabo el análisis de fiabilidad utilizando el Alfa de Cronbach, encontrando un valor de .811, aceptable para el uso de la prueba.
Hipertermia maligna: un caso potencialmente mortal
Authors: Corona Casco F. , Galán Hernández CD , García Soto NA , Cariño Cortés R.
Published: December 2017

Desde los comienzos de la práctica médico-quirúrgica, las complicaciones en la anestesia han sido de gran interés por las patologías severas que se pueden generar, así como su origen desconocido y por los problemas a los que conlleva durante el acto quirúrgico. La hipertermia maligna por mucho tiempo fue un síndrome de origen desconocido y fue causa de numerables defunciones y es hasta principios del siglo XX que con la ayuda de las ciencias genómicas se logra encontrar la causa del origen de dicho síndrome. El propósito de la presentación de este caso clínico es dar a conocer los principales signos y síntomas que alertan la aparición de este síndrome así como presentar las alternativas de tratamiento y manejo que se dan para este caso. En el caso clínico presentado se abordan los signos y síntomas más significantes como la temperatura y presión arterial además de parámetros que brindan estudios como biometría hemática y gasometría arterial. De igual manera se presenta el manejo farmacológico y las medidas paliativas utilizadas para disminuir los síntomas.
Estrés como factor contribuyente en el incremento de la ingesta calórica en alumnos de medicina
Authors: Reynoso Vázquez J. , Ruvalcaba Ledezma JC , García Fragoso DG , Monroy Hernández MF , Ramírez Gabriel A.
Published: December 2017

La prevalencia de la obesidad en México ha aumentado, al igual que la presencia de estrés en los miembros de la sociedad moderna; parece haber mecanismos que relacionan ambos fenómenos de una manera causal. Objetivo: A fin de informar a los estudiantes del riesgo que existe de aumentar su ingesta de alimentos con mayor aporte calórico durante periodos en los que se someten a estrés para evitar que lleven a cabo acciones que en el futuro podrían dañar su organismo. Material y métodos: Se realizó un estudio de análisis de casos y controles en estudiantes universitarios de la Universidad Autónoma del Estado de Hidalgo que se encuentren cursando del primero al cuarto semestre en el área académica de medicina para dar base a dicha relación causal. Resultados: En base a los criterios evaluados se encontró que de los 54 estudiantes encuestados el 27% manifiesta aumento de su ingesta alimenticia durante periodos de estrés. Conclusión: La presencia de estrés en estudiantes universitarios por el aumento de apetito parcial que provoca, podría considerarse como uno de los orígenes de la obesidad.
Extracción de pectina de tejocote (Crataegus pubescens) para la elaboración de yogurth
Authors: Gutierrez Carrillo A.E , Monter Cruz N. , Lozano Montiel X.L , Ramírez Moreno E.
Published: December 2017

El tejocote es un fruto que pertenece a la familia de las Rosáceas, género Crataegus, con un contenido importante de fibra como pectina, y antioxidantes (flavonoides, carotenoides, vitamina C). La obtención de pectina a partir de este fruto permitirá valorizar a este producto que tiene baja demanda en México. Estudios previos han demostrado que la pectina le confiere al yogur calidad y estabilidad mediante su interacción con la caseína. La pectina se obtuvo del fruto de tejocote por ebullición. Posteriormente fue agregado al yogurth en una proporción del 20 % de extracto de pectina. El yogurth obtenido presentó una textura firme y suave con un sabor a tejocote característico, con una coloración crema con características físicas y sensoriales aceptables en gran proporción por la población evaluada. El producto aportó 141 kcals, además de que la adición del fruto de tejocote aporta fibra y antioxidantes.
Estrés y salud mental. Estrategias para el manejo integral del estrés.
Authors: Quezada Rovirosa VL , Mejía Castillo EA , Barrera Villalpando MI , Guzmán Saldaña RME , Solano Solano G.
Published: December 2017

El estrés es un conjunto de respuestas fisiológicas, cognitivas, emocionales y conductuales, organizadas por nuestro organismo que siempre están presentes y nos preparan para mantenernos alerta, para adaptarnos, para sobrevivir y enfrentar situaciones estresantes.El estrés, visto desde el enfoque biológico, es un conjunto de reacciones fisiológicas que preparan al organismo para la acción y tiene como función principal proteger al individuo. Desde el enfoque psicológico, el estrés es el resultado de una relación particular entre el individuo y su entorno que es evaluado por éste como amenazante y que pone en peligro su bienestar. Desde el enfoque biopsicosocial, el estrés se aborda como un proceso que incorpora tanto estresores, como las respuestas fisiológicas, cognitivas, emocionales y conductuales, la interacción entre el individuo y su entorno.
Fibromialgia guía para el manejo Cognitivo Conductual
Authors: Mejia Castillo EA , Guzmán Saldaña RME , Barrera Villalpando MI , Quezada Rovirosa VL , García Meraz M.
Published: December 2017

El libro “Fibromialgia Guía para el Manejo Cognitivo Conductual” recopila una serie de datos estadísticos y definiciones de una enfermedad poco conocida dándonos pauta a tener información del tema que nos sea útil en nuestra vida cotidiana, también nos abre un panorama psicológico para el tratamiento de la enfermedad utilizando un enfoque terapéutico cognitivo que puede ir de la mano con un tratamiento médico y técnicas complementarias que ayudaran a la persona a tener una mejor calidad de vida.
4TEFFECTS OF GRAIN SIZE, ROUGHNESS, AND HARDNESS OF SEA FLOOR ON BACK SCATTERING VALUE BASED ON HYDROACOUSTIC DETECTION
Authors: Pujiyati Sri , Hartati Sri , Priyono Wijo
Published: January 2018

3TBased on results of detection hydroacoustic, backscattering value from the first reflection (E-1) can describe the roughness and from the second reflections (E-2) can describe the hardness of sea floor. The objective of this study was to analyze the relationship between grain size, roughness and hardness with backscattering values using the hydroacoustic method. The results showed that the roughness, hardness, and diameter size fraction of fine sand substrate were greater than that of muddy sand substrate. The backscattering values of very fine sand substrate were also greater than that of muddy sand substrate.Keywords: Hydroacoustic, bottom, backscattering
DIFFERENT PERCENTAGE OF WATER EXCHANGE ON GROWTH OF CORAL TROUT GROUPER FINGERLING (Plectropomus leopardus)
Authors: Aslianti Titiek
Published: January 2018

Coral trout grouper (Plectropomus leopardus) is the prospective aquaculture commodities with a high demand. Fingerling culture is the one of shortly rearing time methods for grow out in net-cages in order to produce continuously. Two hundred fishes with initial total length 16.6±0.5 cm and 72.2±7.6 g of body weight were stocked in each of three of concrete tanks of 4m3 seawater. Water replace as a treatment was applied i.e. A (200%/day), B (300%/day) and C (400%/day).respectively. Feeding frequency of pellet was done twice a day of about 3 - 5% of body weight. Survival and growth of fishes were monitored during two-month period. The result showed that the different percentage of water replace had a significant role in increasing the growth and survival rate of the fishes. Water replaced of 400% daily (treatment C) gave the best survival rate (97%) and growth performance (TL 21.61±0,54 cm; BW 156.84±1.05 g). In contrast, the treatment B (300%/day) and A (200%/day) resulted in a lower survival and growth , i.e. (SR 95.5%; TL 19.51±0.52 cm; BW 140.96±0.08 g) and A (SR 93%; TL 19.08±0.30 cm; BW 132.2±2.65 g)., respectively.Keywords: Coral trout grouper, growth, survival rate, water exchange
HEAVY METALS CONCENTRATIONS IN WATER, SEDIMENT AND BIOTA IN KELABAT BAY, BANGKA ISLAND
Authors: Arifin Zainal
Published: January 2018

Kelabat Bay is a semi enclosed waters divided into two parts, i.e., outer part of Klabat bay facing the Natuna Sea (T Luar) and inner Kelabat bay surrounded by human activities and five river mouths (T Dalam). Study on metal concentrations on sediments and biota was carried out in March and July 2006. Water and sediment samples as well as biota were analyzed using Flame-Atomic Absorption Spectrophotmetry (Flame AAS). The result showed that concentrations of the dissolved heavy metals were generally low with ranged as follows, Pb(1,0 – 26,0 μg L-1), Cd(<0,1– 3,0 μg L-1 ), Cu(1–2,0 μg L-1) dan Zn(1,0–4,0 μg L-1). An average of metal concentrations in sediments were as follows, Pb (11,46 mg kg-1), Cd (0,10 mg kg-1), Cu (2,50 mg kg-1) and Zn(13,64 mg kg-1). Average concentrations of Pb, Cu dan Zn in T Dalam was about double compared to that of sediments of T Luar. However, no significant different was observed between west and south-east monsoon. In contrast, concentrations of Cd in sediment was similar throughout Kelabat bay and influenced by seasons. Accumulation of metals by fishes were mostly lower compared to that of shellfishes. The snail Strombus canarium accumulated the highest of Pb and Cu, cockle Anadara sp was for Cd and Zn.Keywords: heavy metals, water, sediment, biota, temporal variation, Kelabat Bay
THE STUDY OF FERTILITY MARINE ECOSYSTEM OF SOUTHEAST SULAWESI BASED ON BACTERIOLOGICAL ASPECT
Authors: Kunarso Djoko Hadi
Published: January 2018

The study of waters fertilization in Southeast Sulawesi include Flores Sea, Kabaena Strait, Muna Strait, Buton Strait and Tioro Strait based on bacteriological aspect was conducted on April–May 2006, using the Research Vessel Baruna Jaya VII with total stations 25. The aim of investigation was to find out the total numbers and pattern of distribution heterotrophic bacteria and productivity bacteria in the marine ecosystem of Southeast Sulawesi and related with waters fertilization. The analysis of heterotrophic bacteria was determined based on the Total Plate Count method, whereas bacterial productivity with Acridine Orange Direct Count method. The result indicated that the pattern of distribution and total numbers of heterotrophic bacteria at the surface layers varied between (10–10220)CFU x 10-1/ml with an average 940CFU x 10-1/ml. While at the bottom layer varied between (2–488)CFU x 10-1/ml with an average 91CFU x 10-1/ml. For the bacterial productivity in the form of Carbon biomass at the surface layers varied between (1.30– 5.84) x 10–7grC/m3 with an average 3.56 x 10–7grC/m3, at the bottom layer varied between (0.24–1.33) x 10–7grC/m3 with an average 0.64 x 10–7grC/m3. The result of numbers bacteria that in Southeast Sulawesi waters was lower than the Arafura Sea but still higher than the Aceh Sea. The fluctuation of numbers bacteria perhaps due to the factor of monsoon and environmental was influenced on the marine ecosystem. In general this paper conclude that the condition of marine ecosystem Southeast Sulawesi still relatively fertility.Keywords: Fertility, heterotrophic bacteria, productivity bacteria, Southeast Sulawesi waters
THE CHARACTERISTICS OF FORAMINIFERAL COMMUNITY IN JAKARTA BAY
Authors: Rositasari Ricky
Published: January 2018

Jakarta bay is a unique water since there are hydrological and ecological complexity. In general, the feature of these water consist of three ecological elements that are estuaries, coral reefs and open sea. Each of these ecological element has different hydrology, ecology as well as biological characteristics. As a form of meiobenthic community, foraminifera has adaptive behavior to each of ecological element of the waters. The observation on foraminiferal adaptive behavior due to the hydrological condition of Jakarta Bay was conducted from 2003 to 2009. The result showed that foraminiferal distribution was tend to pursue to the degradation water conditions and constructed a specific pattern. Coastal water and estuary were found dominated by Ammonia beccarii, Calcarine and other larger benthic foraminifera were common in coral reef area, Elphidium and Nonion depressulum were common in open waters area. Based on the diversity indices, the foraminifera in Jakarta Bay has a higher diversity compared to foraminifera in the coastal water of Semarang and Cirebon and among the ecological element of Jakarta Bay, reef area has the highest diversity index than coastal nor open sea area.Keywords: Foraminifera, Calcarine, Jakarta Bay
MORPHOLOGY AND CELL BIOMASS OF SPONGE Aaptos aaptos AND
Authors: Ismet Meutia Samira , Soedharma Dedi , Effendi Hefni
Published: January 2018

Aaptos aaptos and Petrosia sp. sponges are known for their ability to produce potential marine bioactive compound. As a metazoan animal with simple body structure, the morphology and it association with symbiont-bacteria could influence their bioactive compound both type and activity, as much as their habitat adaptation. In order to determine morphology and its cell biomass of Aaptos aaptos dan Petrosia sp., samples were taken from the West Pari Island, at 7 m depth. Preserved samples (in 4% formaldehyde) were examined using a histological mounting and centrifugation method to separate the cells fraction of sponge’s tissues. A. aaptos sponge has a soft body structure with 55.9% skeleton-forming fraction, 14.2% sponge cell fraction and 29.9% bacteria fraction. Meanwhile, Petrosia sp. sponge has a rigid body with dominant skeleton-forming fraction (68.6%), and lesser sponge cell and bacteria associated (19.7% and 11.7%, respectively).Keywords: A. aaptos, Petrosia sp, morphology, cell biomass
MEIOFAUNA (FORAMINIFERA) IN SEDIMENTS AND ITS RELATION TO WHITE SANDY BEACH OF SENGGIGI AND WATER CONDITION OFF WEST LOMBOK
Authors: Dewi Kresna T. , Arifin L. , Yuningsih A. , Permanawati Y.
Published: January 2018

A development of meiofaunal data (foraminifera) from offshore area of West Lombok was conducted on 20 marine sediment samples. The samples were taken out using a grab sampler in 1997. The purpose of this study was to apply the formula of Foraminiferal Index by Hallock et al. (2003). Another purpose of this study was to recognize its relation of white sands of Senggigi beach that was dominated by Shlumbergerella floresiana. The result of analysis showed that the value of Foraminiferal Index (FI) was varies between 1.22 and 9.81. The low value of FI (<2) was found at sites that were close to the coastal area. The values FI >2 and <4 occur at five stations that gave indication of limited environment for coral growth. Value of FI >4 that showed good water condition was found in an area surrounding small islands of Gili Trawangan, Gili Meno, Gili Air and southern part of the study area. Based on the identification of foraminiferal specimens, the occurrence of Shlumbergerella floresiana was not abundant as it was accumulated in Senggigi beach. This result showed that this species did not come from samples studied but might come from marine sediment adjacent to the Senggigi beachKeywords: Benthic foraminifera, FORAM Index, west Lombok
VARIABILITY OF CHLOROPHYLL-A CONCENTRATION AND SEA SURFACE TEMPERATURE OF NATUNA WATERS
Authors: Nababan Bisman , Simamora Kristina
Published: January 2018

Variability of chlorophyll-a concentration and sea surface temperature (SST) in Natuna waters were analyzed using satellite data Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and the National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer (NOAA-AVHRR). SeaWiFS data with a resolution of 9×9 km2 and AVHRR with a resolution of 4×4 km2 were the monthly average data downloaded from NASA website. Chlorophyll-a concentrations and SST were estimated using OC4v4 and MCSST algorithms. In general, the concentration of chlorophyll-a in Natuna waters ranged between 0.11-4.92 mg/m3 with an average of 0.56 mg/m3 during the west season and 0.09-2.93 mg/m3 with an average of 0.66 mg/m3 during the east season. Chlorophyll-a concentrations were relatively high seen in coastal areas, especially around the mouth of the Kapuas, Musi, and Batang Hari rivers allegedly caused by the high nutrient intake from the mainland. SST variability in Natuna waters ranged from 23.46-30.88 °C during the west season and tended to be lower than that the east season (27.91-31.95 °C). In addition, the SST values tended to be lower in the offshore than that inshore. During the west season (Nov-Feb) and the transitional season (Apr) in the years of Elnino Southern Oscillation (ENSO), the concentration of chlorophyll-a and the SST in Natuna waters was generally higher than that in non-ENSO years. The results of wind analyses showed that ENSO caused the change of direction and speed of wind from its normal conditions.Keywords: Sea surface temperature, chlorophyll-a, Natuna waters, ENSO, SeaWiFS, AVHRR
IDENTIFICATION OF SECONDARY METABOLITES COMPOUNDS, ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES ON THE METHANOL EXTRACT OF SEA CUCUMBER Stichopus hermanii
Authors: Rasyid Abdullah
Published: January 2018

Identification of secondary metabolites, antibacterial and antioxidant activities assay of methanol extract of sea cucumber Stichopus hermanii were conducted from May to July 2011 at the Natural Products Laboratory, Research Center for Oceanography, Indonesian Institute of Sciences. Sea cucumber used in this study comes from South Lampung waters. Objective of the study was to get information of secondary metabolites, antibacterial and antioxidant activities of methanol extract of sea cucumber S. hermanii. The extraction method which used in this experiment was the maceration method using methanol solvent. Identification of secondary metabolites was performed through observing reaction of colors, precipitation, and foaming. Antibacterial and antioxidant activities of methanol extract from sea cucumber were tested using agar diffusion method and reducing of free radicals 1.1-Diphenyl-2-Picrylhydrazyl (DPPH) respectively. The results showed that secondary metabolites identified in the methanol extract of sea cucumber S. hermanii were saponin and steroids. Both secondary metabolites had antibacterial activities against Staphylococcus aureus, Vibrio eltor and Bacilus subtilis. The analysis of antioxidant activity showed that the IC50 value of methanol extract of sea cucumber S. hermanii was about 65.08 ppm. It indicated that S. hermanii is having potency as antibacterial and antioxidant. Keywords: antibacterial, antioxidants, sea cucumber Stichopus hermanii, secondary metabolites
INDONESIAN THROUGHFLOW TRANSPORT VARIATIONS AND OCEANOGRAPHIC’S PARAMETER IN TIMOR SEAS AS AN INDICATION OF ENSO EVENTS
Authors: Safitri M. , Cahyarini S. Y. , Putri M. R.
Published: January 2018

Variation of Indonesian Throughflow transport, salinity, and temperature at surface level of Timor Seas monthly, seasonal, and annual mean scale was studied using the datasets provided by IRI/LDEO Climate Data Library i.e Simple Ocean Data Assimilation (SODA) for the salinity. The period data used in this study was 1995-2004, ERSST for the temperature. The Indonesian Thourghflow transport was obtained from Hautala et al. (2001). Result of this study showed there was influence of monsoon and ENSO on oceanographic parameters. During the South East (SE) monsoon, an emptiness on the surface water occurred in Timor Seas due to the easterly wind, which causes the upwelling. The results was also shown that during the SE monsoon the average temperature was 26.84oC, salinity was 34.35, and Indonesian Throughflow transpor was -0.34 Sv. While during the North Western (NW) monsoon the average temperature was 29.6 oC, salinity was 34.22, and the Indonesian Throughflow transport was -0.27 Sv. The negative value (-) means that the flow toward the Indian Ocean. In addition, based on temporal correlation between Indonesian Throughflow transport and NINO 3.4 index was found that the annual mean variability increases (-0.18 Sv) during La Niña period and decreased (-0.13 Sv) during period El Niño. These indicated that ENSO phenomena influenced the transport across the Equatorial Pacific east-west. Keywords: Indonesian throughflow, salinity, temperature, SODA, Monsoon, ENSO, Timor Seas.
SPECTRAL OF REMOTE SENSING REFLECTANCE OF SURFACE WATERS
Authors: Nababan Bisman , Wirapramana Anak A.G. , Arhatin Risti E.
Published: January 2018

Spectral measurements of remote sensing reflectance (Rrs) of surface waters in the northeastern Gulf of Mexico were conducted in various seasons in 1999-2000 using Fieldspec Analytical Spectral Devices (ASD) Spectroradiometer. Filtering process was performed on the data to eliminate invalid data. In general, in coastal waters particularly near rivers mouth (water type-2) the Rrs spectrals were relatively low at blue, maximum at green, and decreased to a minimum value at the red wavelength. In offshore waters (type-1), the general pattern of Rrs spectrals were maximum at the blue wavelength and then continued to decline at the green wavelength until the minimum value at the red wavelength except during summer where Rrs spectrals in most offshore area having the maximum value at the green wavelength due to the phytoplankton bloom as a result of freshwater intrusion from the Mississippi river. In general, the patterns and values of Rrs ​​were significantly different among seasons and locations. Results showed that Rrs values ​​at the blue wavelength (λ=400 nm) were generally higher in the spring than in other seasons ranging of 0.007-0.018 sr-1 in offshore waters and 0.004-0.015 sr-1 in coastal waters. During spring, Rrs values at the green ​​wavelength (λ=500 nm) were also higher than in other seasons ​​ranging of 0.005-0.013 sr-1 found in coastal waters. However, during summer in coastal waters, the maximum values of Rrs spectrals were found in different green wavelength on different locations showed the differences in the type and composition of phytoplankton, organic materials, and suspension matters at those locations. Keywords: remote sensing reflectance, phytoplankton, offshore, coastal, Gulf of Mexico
ACOUSTIC DETECTION AND CHARACTERIZATION OF MARINE SEDIMENT WITH SHALLOW SEISMIC TECHNOLOGY IN RAMBAT WATERS, BANGKA BELITUNG
Authors: Ramdhani Haqqu , Manik Henry M. , Susilohadi Susilohadi
Published: January 2018

High resolution of marine seismic reflection seismic were used to detect the layers of seafloor sediment and to interpret the seismic data geologically. The objectives of this study weres to detect and to characterize the seafloor sediment in the Rambat area, West Bangka, Bangka Belitung. Acquisition data was held on 10-24  August  2012 located between 105.1°00'00" - 105.5°00'00 " N and 1.7°00'00"-1.9° 00'00" W. Several methods used to process the data were geometry processing, band pass filter, predictive deconvolution,  and Autocoralation Gain Control (AGC)  in order to reduce the multiple noise and to  ease the data interpretation. Seismic cross section found in Cross Rambat (CRMBT) line 11 exhibited  sedimentation process of the sea floor which rocky substrates. The process was assumed to be occurred due to legal and illegal mining activities for long period of time. Keywords: seismic, acoustic, sediment, band pass filter, deconvolution, noise
ECHINODERMATA, Holothuria atra, IN AN INTERTIDAL SEAGRASS BED OFF THE BAMA BEACH, BALURAN NATIONAL PARK, EAST JAVA, INDONESIA
Authors: Setyastuti Ana
Published: January 2018

The occurrence of sea cucumber, Holothuria atra, was assessed in the seagrass area of the Bama beach, Baluran National Park in East Java. The study investigated the frequency and early stages of seagrass association preference of H. atra. Survey was conducted in May 2011 using belt transect (1m x 100m with three replicates). Frequency of H. atra and their association with seagrass were recorded. Furthermore, length and wet weight of each individual of H. atra were measured. The total of 146 individuals of H. atra were observed in which 37.67% associated with Enhalus acoroides (EA), 23.29% associated with Cymodocea rotundata (CR), 23,29% associated with mixed seagrass species of E. acoroides and C. rotundata, and 15.75% associated with no seagrass habitats. The results suggested that small size H. atra might prefer to live under the taller seagrass stands such E. acoroides, which could be morphologically benefits the H. atra by providing better protection and shelter area. Keywords: Holothuria atra, Enhalus acoroides, Cymodocea rotundata, Baluran National Park
THE RELATIONSHIP BETWEEN SEASON VARIATIONS AND DEPTH LEVEL ON THE GROWTH AND SURVIVAL RATE OF PEARL OYSTER SEEDS (Pinctada maxima) IN KAPONTORI BAY, BUTON ISLAND
Authors: Hamzah M S
Published: January 2018

The pearl oyster (P. maxima) farming particularly in the Kapontori Bay, Buton Island waters and in other areas had complained for the mass mortality of pearl oysters saplings on the shell width between 3-4 cm. The mass mortality, was allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 27, 2007 to February 28, 2008. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. The variance analyses showed that depth levels affected the survival rates of the pearl oyster seeds significantly (P<0.01). Based on honest significantly difference test, it also showed that the percentage number of survival rate was found higher within the depth of 2m (93.33%). Based on the relationship analyses between length and weight of shell body in all depths indicated a similar growth pattern of  minor allometric (b<3). The growth, survival rate, and environmental conditions based on depth levels on pearl oyster saplings were discussed in this paper. Keywords: Seasonal variation, survival rate, growth, pearl shell (P. maxima), depth level
A NUMERICAL MODELING STUDY ON UPWELLING MECHANISM IN SOUTHERN MAKASSAR STRAIT
Authors: Atmadipoera Agus S , Widyastuti Priska
Published: January 2018

ABSTRACT While it has been well documented in the previous studies that upwelling events in the southern Makassar Strait (MAK) during the Southeast Monsoon (SEM) period are associated with low sea surface temperature (SST) and high chlorophyll-a (Chl-a) concentrations in the seawater, the dynamic and physical processes that trigger these upwelling events are still less well understood. In the present study we proposed a mechanism of the upwelling event using a numerical model of the Regional Ocean Modeling System (ROMS).  Model validations showed a high correlation of SST climatology between the model and the NOAA-AVHRR satellite data. Moreover, velocity fields of the Indonesian Throughflow (ITF) Makassar in Libani Channel was well reproduced by proposed model, revealing an intensification of the flow centered near 120 m depth, which is in good agreement with the observation data. The model demonstrated that during the SEM period strong southeasterly winds that blow over southern Sulawesi Island can increase high vertical diffusivity and heat loss through heat flux. Hence, these physical processes lead to increased vertical mixing that, in turn, generates low SST, as a proxy of upwelling event. Furthermore, the upwelling process is enhanced by the ITF Makassar jet that creates large circular eddies flow due to complex topographic within the triangle area of southern Makassar - eastern Java Sea - western Flores Sea. The eddies generate the area of convergence offshore along the ITF pathways and divergence area in the coastal waters close to southern Sulawesi Island.  Model experiment with closing/opening Selayar Strait revealed a change of intensity and area of upwelling, suggesting that the Selayar Island forms a barrier for the outflow from MAK to northern part of Flores Sea. Keywords: Upwelling, ITF Makassar, SE monsoon winds, ROMS-AGRIF, Makassar Strait.
NURSERY TECHNIQUES WITH JUVENILE CORAL TROUT, Plectropomus leopardus WITH DIFFERENT TYPES OF FOOD
Authors: Alit Anak Agung , Setiawati Ketut Maha , Dharma Tony Setia
Published: January 2018

ABSTRACT Feed management is a critical factor in the nursery activities because food serves as an energy for growth and survival rates. The study aimed to determine the best feeding to improve growth and survival rates. Cultured of coral trout grouper seeds were used for this research in 9 fiber tubs each of  0.8 tonnes of sea water volume with 3 treatments and 3 replicates. The feeding treatments were (a) commercial feeding pelle; (b) trash fish; and (c) feeding combinations (50% pellets and 50% trash fish). The initial length of coral trout grouper seeds were 3 cm long. The pellet used was a commercial pellet with dose of 5-10% biomass, while the trash fish was clupeid fish. Feeding times were twice a daya at 08:00 and 16:00 local time. A complete random design was used as an experiment design. Data was analysed using ANOVA and descriptive statistics. Water qualities during larva rearing included water temperature, pH, salinity, DO, ammonia, nitrite, and phosphate. The results showed that growth dan survical rates was significantly affected by combination feeding method (50% pellet and 50% trash fish) with growth rate of 0.08% cm/day and survival rate of 60.20±2.34%. Keywords: Feed, trash fish, juvenile coral trout grouper, growth, and survival.
WATER MASSES CHARACTERISTICS AT THE SANGHIE TALAUD ENTRY PASSAGE OF INDONESIAN THROUGHFLOW USING INDEX SATAL DATA 2010
Authors: Radjawane Ivonne M , Hadipoetranto Paundra P
Published: January 2018

ABSTRACT Measurement of ocean physical parameters using the CTD was conducted by deep water expedition INDEX-SATAL 2010 (Indonesian Expedition Sangihe-Talaud) in July-August 2010. The aim of this study was to determine the characteristics of water masses around the Sangihe Talaud Water where there was an entry passage of Indonesian throughflow (ITF) at the west pathway that passed through the primary pathway i.e., the Sulawesi Sea and Makassar Strait and the secondary pathway (east pathway) that passed through the Halmahera Sea. The analyses were performed by the method of the core layer and was  processed with software Ocean Data View (ODV). The results showed that in the Sangihe Talaud waters there was a meeting water masses from the North Pacific and the South Pacific. The water mass characteristics in main pathway through the Sulawesi Sea was dominated by surface and intermediate North Pacific water masses and carried by the Mindanao Currents. While the Halmahera Sea water mass was dominated by surface and intermediate South Pacific water masses carried by the New Guinea Coastal Current that moved along the Papua New Guinea and Papua coast enters to the Halmahera Sea. Keywords: Index-Satal 2010, Northern Pacific Water Masses, Southern Pacific Water Masses, Sangihe Talaud
TURBULENT MIXING IN OMBAI STRAIT
Authors: Suteja Yulianto , Purba Mulia , Atmadipoera Agus S.
Published: January 2018

Ombai Strait is one of the exit passages of Indonesian Throughflow (ITF) which conveys hotspot of strong internal tidal energy. Internal tide is the one of main energy which causes mixing processes in the oceans and could lead to changes in water mass characteristics. The purpose of this research was to estimate the turbulent mixing by using Thorpe analysis. Nine CTD cast were obtained for one tidal cycle (24 hours) in Ombai Strait. The results showed the average value of the turbulent mixing is 833.5 x 10-4 m2s-1, the highest found in deep homogeneous layer (2383.4x 10-4 m2s-1), followed by mixed surface layer (103.0 x 10-4 m2s-1) and thermocline (14.2 x 10-4 m2s-1). This Turbulent mixing value is much higher than the previous measurement in Indonesian Sea. This is presumably due to the strong internal tidal energy and its interaction with existing deep sill in Ombai Strait. Keywords: Indonesian throughflow (ITF), Ombai Strait, turbulent mixing
WAVE PROPAGATION AND RESIDUAL CURRENT OF TIDE IN MAYALIBIT BAY: 2D HYDRODYNAMICS MODEL OF TIDE
Authors: Budiman Asep Sandra , Koropitan Alan F. , Nurjaya I Wayan
Published: January 2018

Study on tidal waves and residual currents in Mayalibit Bay was conducted by constructing the 2D numerical hydrodynamics to find the characteristics of tide and residual currents inside the Bay. The 2D hydrodynamic equations with non-linier terms were solved by finite difference methods explicitly. M2 and K1 wave propagations were observed and analyzed at 25 observation points. M2 and K1 residual currents were obtained and described spatially. Simulation results of tidal currents were validated with field measurements. The validation result showed that the tidal currents between the model results and field measurements were quite fit. Generally, simulation results showed the significant differences between the tide inside and outside the Bay. This was strongly explained by the simulation results of M2 and K1 wave propagations. The M2 and K1 amplitudes were 10 times lower inside  than outside the Bay with the phase lags of about 180°(M2) and 160°(K1). This result indicated that the tide inside and outside the Bay were in the opposite conditions. The tide had an ebb inside while the flood was outside and vice versa.  M2 residual currents was flowed into the Bay uniformly, while K1 residual currents flowed out to the open sea in the Northern part and it flowed into the Bay in the Southern part of the Bay. Eventually, both of them converged in the middle of the Bay. Keywords: tide, tide-induced residual current, numerical method
GROWTH RESPONSE OF WHITE SHRIMP (Litopenaeus vannamei) REARED IN LOW SALINITY MEDIUM, FED DIFFERENT PROTEIN AND CALCIUM LEVELS
Authors: Kaligis Erly
Published: January 2018

The white shrimp (Litopenaeus vannamei) has been an important commercial shrimp species in Indonesia. This species is tolerance to low salinity therefore, it is important to develop its aquaculture. The purpose of this study was to study the effect of protein and calcium levels in diet on growth performance of the white shrimp post larvae. A factorial experiment at three levels of dietary protein (25, 35, 45%) and three levels of calcium (0, 2, 4%) with three replicates were used in this experiment. Fifteen shrimps (PL25) were placed in triplicate 45-l glasses aquarium. Salinity in shrimp aquarium was 2 ppt. The shrimps were fed of about 8% of body weight four times per day for 28 days. Measured parameters were daily growth rate, feed efficiency, RNA/DNA ratio, frequency of moulting, calcium and protein retentions. Results showed that shrimp fed on diet 45% protein and 2% calcium levels produce higher daily growth rate, feed efficiency, RNA/DNA ratio, protein retention, compared to the other treatments. It was concluded that the white shrimp post larvae required 45% protein and 2% calcium for the shrimp maintenance in a low salinity condition. Keywords: protein, calcium, RNA/DNA ratio, moulting, Litopenaeus vannamei
SEDIMENTATION RATE AND DISPERSION OF ORGANIC WASTE FROM LOBSTER CULTURE ON CAGE IN EKAS BAY, WEST NUSA TENGGARA PROVINCE
Authors: Junaidi Muhammad , Hamzah Mat Sardi
Published: January 2018

The objective of this study was to determine sedimentation rate and dispersion of organic waste from lobster culture on cage in Ekas Bay, West Nusa Tenggara Province. Measurement of sedimentation rate was conducted every month during the process of cultivation lobster. This measurement was done by setting up a sediment trap under and around the cage. The result of this study showed that sedimentation rate under the lobster cage within 270 days ranged from 14.92 to 27.33 (20.66±4.60) g/m2/day. The organic waste did not disperse far away from the cage because of the small current rate around the cage location of 0.068 to 0.2 m/s. Feces and residual feed settling velocities followed the current direction within the range of 0.0373 to 0.072 m/s with 8.50 m of water depth. According to this result, dispersion of feces particle and residual food was between 8.24 and 45.58 m from the cage. In order to prevent an accumulation of waste particle on the water bottom, the distance between cages needs to be set to at least twice of the farthest distance of particle dispersion which is 2 x 45.58 = 91.16 m or about 100 m. Keywords: sedimentation rate, waste dispersion, lobster culture, Ekas Bay
DIVERSITY OF SEA CUCUMBER (ECHINODERMATA: HOLOTHUROIDEA) IN SABU RAIJUA WATERS, SABU ISLAND, EAST NUSA TENGGARA
Authors: Oedjoe Marcelien Dj Ratoe , Eoh Crisca B.
Published: January 2018

Sea cucumber has an ecological function as an organic decomposer in sediment and nutrient producer within a food chain. In addition, sea cucumber has also economic values as fisheries and trade commodities. The pupose of this research was to investigate diversity of sea cucumber in the Sabu Raijua waters, East Nusa Tenggara Province. Samples were collected from Sabu Raijua waters in July -August 2014 using transect quadrant of 1x1 m2 during the lowest low tide in daytime at 13:00-16:00 and nighttime at 18.00-22.00 Central Standar Local Time. Data analyses on the sea cucumber were based on composition, density, distribution, and eating habits. The results showed that there were 8 species that can be classified into 3 families i.e., the Holothuridae (Holothuria nobilis, Holothuria scabra, Holothuria atra, Holothuria edulis, Holothuria impatiens, and Holothuria leucospilato); the Actinopyga (Actinopyga lecanora); and the Bohadshia (Bohadschia argus). The density of Holothuria nobilis was 5.651 individual/m2, Holothuria atra of 4.409 individual/m2, Holothuria scabra of 3.294 individual/m2; Holothuria edulis of 3.102 individual/m2; Bahaschia argus of 2.102 individual/m2; Holothuria mexicana of 2.088 individual/m2; Holothuria impatiens of 2.044 individual/m2; and Actinopyga lecanora of 1.037 individual/m2. Of these sea cucumber species, 17.3% were distributed on sandy substrate and 82.7% on seagrass and coral subtsrates. All sea cucumber species have a posi-tive association with its environment indicating that the water quality was still in a good condition.   Keywords: sea cucumber, association, diversity, composition, distribution
NATURAL CATHEPSIN INHIBITOR TO INHIBIT MILKFISH DETERIORATION DURING CHILLING STORAGE
Authors: Nurhayati Tati , Trilaksani Wini , Zaenuri Mohammad
Published: January 2018

Quality deterioration of fish is caused by various factors, one of them is due to the activity of cathepsin enzyme. Cathepsin enzyme activity can be inhibited by enzyme inhibitors. Inhibitors of the enzyme can be obtained from fish meat tissue by separating the enzyme-inhibitor complex with heat treatment. The purpose of this research was to extract and apply the cathepsin inhibitors to inhibit deterioration of fish quality. This research was conducted in three  steps: (1) the determination of the optimum extraction temperature for extraction of cathepsin inhibitors, (2) the determination of the most potent cathepsin inhibitors with various concentrations, and (3) the application of cathepsin inhibitors in inhibiting the deterioration of fish quality. The results showed that the cathepsin inhibitors was optimally extracted at 80°C. Cathepsin inhibitors diluted using buffer with a ratio of 1: 1 had the same relative activity without dilution. The process of quality deterioration of milkfish  control in chilling temperatures occured after 504 hours (21 days) storage with a 24-hour observation time interval. The complete process during observation was pre-rigor (0 hour ), rigor mortis (96 hours), post-rigor (360 hours), and deterioration (504 hours). The process of milkfish quality deterioration treated with soaking in  cathepsin inhibitors occured after 624 hours (26 days) storage with the detailed process as follows: 0 hour (pre-rigor), 144 hours (rigor mortis), 408 hours (post-rigor), and 624 hours (deterioration). Thus fish marinated with cathepsin inhibitors achieve slower deterioration phase 5 days. Keywords: cathepsin inhibitor, deterioration, pre-rigor, rigor mortis, post-rigor, quality deterioration.
SEASONAL VARIABILITY OF LIGHT ABSORPTION COEFFICIENT OF SURFACE WATER
Authors: Nababan Bisman , Wiguna Denny A. , Arhatin Risti E.
Published: January 2018

Absorption coefficient measurement can be used in estimating water quality, optical characteristic of water column, and marine bio-optical models. The purposes of this research were to determine values and variability of sea surface absorption coefficient in the northeastern Gulf of Mexico (NEGOM) based on various seasons. The data were collected in spring, summer, and fall seasons in 1999-2000 with AC-9 instrument. The spatial distribution of absorption coefficient showed that relatively high values were generally found along the run off Missisippi, Mobile, Chochawati, Escambia, Apalachicola, and Suwannee rivers, as well as Tampa Bay. Meanwhile, relatively low values were found in offshore region. This pattern followed the distribution pattern of chlorophyll and CDOM. Based on the local region comparison of spectral average value of absorption coefficient, we found a significant difference (α = 95%) among regions with the highest value in the run off of the Mississippi and Mobile rivers, and the lowest value in the offshore region. Comparison of spectral average value of absorption coefficient among seasons at the three primary wavelengths (blue=440 nm, green=510 nm, and red=676 nm) also showed a significant difference (α = 95%) with the highest value during the summer 1999 (Su-99) and the lowest value during the spring of 2000 (Sp-00). Absorption coefficient values were influenced by oceanographic factors that varied in every season such as wind, surface currents, upwelling, the location and speed of the Loop Current, and the river discharge of fresh water into the NEGOM.Keywords: absorption coefficient, seasons, chlorophyll, CDOM, northeastern Gulf of Mexico
THE ABUNDANCE OF ORNAMENTAL CORALS AFTER MASS DIE OFF IN 1997 ON THE PADANG SHELF REEF SYSTEM, WEST SUMATERA, INDONESIA
Authors: Johan Ofri , Prasetio Anjang B. , Ardi Idil , Syam Amran R. , Quinn Norman J.
Published: January 2018

ABSTRACTThe Indonesian Ministry of Marine Affairs and Fisheries aims to establish export quota ornamental corals based on scientifically-founded data from the natural environment. The purpose of this study was to determine the abundance of ornamental coral after mass die off in 1997. Ornamental corals were classified into three groups based on the guideline of ornamental coral propagation for trading purposes. Classification categories are rapid (3-6 months), middle (8-12 months), and slow growth rate (>24 months), which relates to their harvesting time when transplanted for the trade purpose. The survey method used line intercept transects to get coral condition data and belt transect with 2 m width to get ornamental coral data. Both line and belt transect have 30 m length and with three replicates. The study showed number of colony and abundance of ornamental coral for fast growth rate group such as Acropora sp (1348 col & 7.49 col/m2), Galaxea sp, Hydnophora exesa, H. microconus, Pocillopora damicornis, Stylopora sp and Montipora sp with the highest abundant found on Acropora sp and Montipora sp (1348 col & 7.49 col/m2). Whereas the coral which from middle growth rate were Leptoseris sp, Pavona sp, Platygyra sp, Favia sp, Favites sp with the highest abundant found on Favia sp (101 col & 0.56 col/m2).  Coral species typically used for ornamental coral trade within the slow growth rate category such massive coral were not found on this survey. Due to the massive coral die-off in 1997 and the paucity of ornamental corals, the utilization of ornamental coral should be supported by coral transplantation and the broodstock of slow growth of coral taken from other area.  Keywords: ornamental coral, abundant, mass die off, Padang Waters