bluuebunny/crossref_metadata_2025_split huggingface dataset:
Кінетика сушіння Nа+- заміщеної форми бентонітової глини
Authors: Chernyshyn O.G. , Nedbailo O.M. , Kuzminec M.P. 
Published: October 2017

Відомо, що термічна обробка бентонітової глини змінює її фізичні та хімічні властивості. Експериментально встановлено для палеоценового бентоніту Воронезького антеклазу, що режим сушіння може суттєво змінити деякі ливарні та металургійні властивості бентоніту. Мінеральний склад був встановлений методом РФА, здійснено ідентифікацію, визначено кількісний вміст мінералу з глинистого каменю та компоненти домішок, ступінь збагачення монтмориллонітом. Представлені результати експериментальних досліджень процесу сушіння гранульованих суспензій Na + - замінної форми бентонітової глини Черкаського родовища. Показано вплив на процес сушки температури, швидкості сушарки, вологості матеріалу, геометричних розмірів гранул, їх групування та розміщення щодо потоку теплоносія. Спостереження показали, що при збільшенні початкової вологості матеріалу збільшується кількість і розмір тріщин. Проте сушка природної бентонітової глини, навіть при підвищеній вологості, не викликає розтріскування гранул. Однак високий вміст вологи в суспензії призводить до продовження періоду сушіння та збільшення споживання енергії. Отримані результати вказують на те, що незалежно від напрямку потоку сушильного агента відносно однієї гранули або групи гранул кінетичні параметри сушіння поліпшуються зі зменшенням діаметра гранул. Аналіз даних показав, що швидкість висихання залежить від умов аеродинаміки в зоні розміщення гранул. При бічному вирівнюванні площини вагової площини по струму сушильного агента найкращі результати отримують, коли по одному потоку розташовуються одиночні гранули. Видно, що порушення режиму гранулювання може призвести до втрати продуктивності сушіння та збільшення споживання енергії.
El docente y el uso de herramientas tecnológicas de enseñanza-aprendizaje en la Educación Básica Ecuatoriana
Authors: Tonato Becerra Maria Nicolasa 
Published: October 2017

La cultura informática educativa en el Ecuador se encuentra frente a nuevos retos mediante el uso de nuevas metodología de enseñanza y aprendizaje. Basados en nuevos retos donde la información que maneja el estudiante es reflejada en los beneficio del uso de la tecnología, en este artículo presentamos un análisis basado en las Estrategias de Enseñanza – Aprendizaje, La educación y el Buen Vivir que interactúan de dos modos. Por una parte, el derecho a la educación es un componente esencial del Buen Vivir, ya que permite el desarrollo de las potencialidades humanas, y como tal, garantiza la igualdad de oportunidades para todas las personas, donde la Constitución de la República del Ecuador, Ley Orgánica de Educación Intercultural y el Código de la Niñez y adolescencia sobre la educación y las retos del docente y sus estrategias de enseñanza actual.
THE CHARACTERISTIC OF DEEP SEA FORAMINIFERAL COMMUNITY IN TOMINI BAY, SULAWESI
Authors: Dewi Kresna Tri , Hanafi Mustafa , Hanafi Mustafa 
Published: October 2017

<p>A total of 14 sediment samples from Tomini Bay, Sulawesi were used for this study as a component of sediment. The samples were carried out by using a gravity corer at water depth range between 600 and 1400 m. This study was a part of mapping activity on marine geology and geophysics during the first cruise of R/V Geomarin III in 2010. The purpose of this study was to examine the subsurface geology related to the potency of energy and mineral resources. Top core sediment samples were washed through 0.063mm opening sieve and then dried in an oven. About maximum 300 foraminiferal specimens were picked from every dried washed residue sample to separate them from other particles under a binocular microscope with brush and water. The result showed that most samples were dominated by planktonic foraminifera (&gt;90%), such as <span style="text-decoration: underline;">Globorotalia</span> <span style="text-decoration: underline;">menardii</span>, <span style="text-decoration: underline;">Orbulina</span> <span style="text-decoration: underline;">universa</span>, <span style="text-decoration: underline;">Globigerinoides</span> <span style="text-decoration: underline;">ruber</span> and others as typical of deep sea sediments. On the other hand, benthic foraminifera was found less than 10% that was represented by <span style="text-decoration: underline;">Cibicidoides</span> <span style="text-decoration: underline;">wuellerstorfi</span>, <span style="text-decoration: underline;">Ceratobulimina</span> <span style="text-decoration: underline;">pacifica</span>, <span style="text-decoration: underline;">Pyrgo</span> sp., <span style="text-decoration: underline;">Bolivinita</span> <span style="text-decoration: underline;">quadralatera</span>, <span style="text-decoration: underline;">Uvigerina</span> <span style="text-decoration: underline;">peregrina</span>, etc. The characteristic of deep sea foraminiferal community of this area may be used for interpreting environmental deposition in the adjacent areas that is useful for petroleum exploration.</p> <p>Keywords: foraminifera, deep sea, Tomini Bay, Sulawesi.</p>
THE EFFECTS OF DIFFERENT IMMERSION METHOD AND TIME ON THE PHYSICO-CHEMICAL CHARACTERISTICS OF SKIPJACK TUNA (Katsuwonus pelamis) FISH MEAL
Authors: Litaay Christina , Santoso Joko 
Published: October 2017

<p>High fat content in a dark fleshed fish can affect on nutritional value because it can lead to odors in fish meal products. Effort Immersion (deffating) is one way to reduce fat content in fish meal products in order to reduce the products from odor. Research on methods and durations of immersion effects were conducted from October to November 2011. This study aimed to determine the best method to get quality materials skipjact tuna fish meal based on methods and durations of immersion. Fish sampling were taken from the village of Latuhalat, Ambon-Maluku waters. Deffating process used water, 3% acetic acid, and 0.8% sodium bicarbonate. Immersion durations were 2, 4, and 6 hours. Deffating method using 0.8% sodium bicarbonate with 6 hours immersion time exhibited the best quality fish meal with protein content of 82.86% and 1.10% fat content.</p> <p>Keywords: deffating, fish meal, skipjact tuna.</p>
GENETIC VARIATION OF HUMPBACK GROUPER (Cromileptes altivelis) ON F1 AND F3 GENERATIONS
Authors: Sembiring Sari Budi Moria , Tridjoko Tridjoko , Haryanti Haryanti 
Published: October 2017

<p>Hatchery and culture technology of Humpback grouper has been developed. However, sometimes it is still found constraint in sedd production and caused instability of production due to failure by many factors. Breeding program become necessary to provide seed with high quality and good genetic variation. Quantitative characteristic selection is one of breeding program to improve productivity in grouper aquaculture. The aim of this research was to produce good phenotyphic and genotypic quality of Humpback grouper candidate broodstock. Selection of Humpback grouper F1 and F3 was done based on quantitative characteristic (body length and weight) and genotyphic characteristic by using ramdom amplified polymorphism DNA (RAPD) method. The results of conventional selection were found candidate broodstock of Humpback grouper F1 and F3 with body weight range from 170-210 g and 160-170 g consecutively. Heterozygosity values of Humpback grouper analized by RAPD of F1 and F3 were 0.7940 and 0.7749 consecutively and it was not significantly different. This value emphasis that population of this F3 Humpback grouper was still good to grow for broodstock.</p> <p>Keywords: genetic variation, humpback grouper, F1, F3.</p>
DIFFERENCES CONCENTRATION DISTRIBUTION AND SOURCE OF IN ORGANOCHLORINE PESTICIDES IN WATER AND SEDIMENT IN JAKARTA BAY WATERS DURING TRANSITION SEASON
Authors: Khozanah Khozanah 
Published: October 2017

<p>Study on the distribution and sources of organochlorine pesticide concentrations in water samples and sediments from the Jakarta Bay was conducted in April 2011 (transition season I) and June 2011 (dry season). The purpose of this study was to determine the distribution of pesticide concentrations in water and sediments and to identify possible sources of organochlorine pesticides. The concentrations of organochlorine pesticides was measured by the GC/ECD (electron capture detection) HP 5890 series II. Concentrations found in the water column during transition I season ranged from 11.596 to 74.338 ng/l (average=41.998 ng/l) and in dry season varied from 4.554 to 19.119 ng/l (average=7.741 ng/l). In sediment samples, concentrations found in transition I season varied from 0.936 to 2.816 ng/g (average=1.782 ug/g), and in dry season about 0.7691 to 7.138 ug/g, (average=2.722 ug/g). In the water column, the average concentration in transition I was higher than that found in dry season, whereas levels in sediment during transition season I was lower. The average levels of pesticides in the water column was higher than those found in sediments. These results suggested that the seasons played a role in the distribution of organochlorine pesticides in the water column and sediments. Source of organochlorine pesticides were suggested from agricultural activities in the mainland Cisadane.</p> <p>Keywords: organochlorine pesticides, DDT, BHC, Jakarta Bay waters.</p>
COMMUNITY STRUCTURE OF PHYTOPLANKTON IN SEKOTONG AND KODEK BAY WATERS, WEST LOMBOK
Authors: Sutomo Sutomo 
Published: October 2017

<p>Phytoplankton plays important roles of food weeb in aquatic ecosystem, can absorb and release CO<sub>2</sub> which is very useful for other organisms and the environment. The purpose of this research was to study the community structure, including abundance, composition and diversity of phytoplankton in the Sekotong and Kodek Bay, West Lombok. The study was conducted in April 2012 at 10 stations in the Sekotong Bay and six stations in Kodek Bay. Sampling was done vertically by using plankton Kitahara net having mesh size of 80 μm. The results showed that the abundance of phytoplankton from 10 stations in Sekotong Bay ranged between 834,134-6,488,888 sel/m3, while in Code Bay ranged between 53,571-191,642 sel/m<sup>3</sup>. Phytoplankton dominant in the waters of Sekotong Bay were Chaetoceros and Skeletonema, while in Kodek Bay the dominant phytoplankton were Chaetoceros, Hemialus, Lauderia, and Skeletonema. The results of the analysis of the diversity of phytoplankton genera in Sekotong Bay showed the value of diversity index (H')=0.40-1.13 and dominancy index=0.41-0.85. While in Kode Bay, the diversity of phytoplankton genera showed the value of diversity index (H')=1.53-1.98 and dominancy index=0.03-0.28. Based on these results, it can be concluded that the diversity of phytoplankton genera in the waters Sekotong Bay could be classified as less to moderate and there was a tendency of being dominated by one genera in the population. The diversity of phytoplankton genera in Kodek could be classified as moderate and there were low tendency of domination by certain genera in the population.</p> <p>Keywords: stucture community, phytoplankton, Sekotong Bay, Kodek Bay, West Lombok.</p>
GROWTH AND SURVIVAL RATE OF GOLDEN TREVALLY, Gnathannodon Speciosus Forsskal WITH DIFFERENT LENGTH SIZE
Authors: Alit Anak Agung 
Published: October 2017

<p>Golden travelly is a type of fish that can live on the surface, belongs to Carangidae family, for a length of 5-8 cm can function as marine ornamental fish with the name of yellow crime or yellow samba, and can be used for consumption. The study was conducted to determine the effect of length on the initial stocking of fish seed to the growth and survival rate of golden travelly. Fish samples were cultured fish golden travelly of 45 days old hatchery and stocked with density of 300 pc/tank in 9 tanks with volume of 1 m³ feber/tanks. Golden travelly were fed with commercial fish by feeding frequency of 3 times/day untill satiation. The tested treatments were based on initial different lengths i.e., treatment A (1.5 to 2.0 cm/pc), B (2.5 to 3.0 cm/pc), and C (3.5 to 4,0 cm/pc). Feeding was based on 10-15 % of body weight. Measured variables were body length growth, survival rate, and quality of water. Growth and survival rate were analysed using analyses of variance (ANOVA). The results showed that the growth rate of fish golden travelly <span style="text-decoration: underline;">Gnathannodon</span> <span style="text-decoration: underline;">speciosus</span> Forsskal was best at treatment B (2.5 to 3.0 cm/pc) with 7% per day and 92% survival rate.</p> <p>Keywords: fish seed golden trevally, tanks , growth, and survival.</p>
MICROHABITAT PREFERENCE OF SEASTAR IN HARI ISLAND WATERS, SOUTHEAST SULAWESI
Authors: Gaffar Syamsidar , Zamani Neviaty P , Purwati Pradina 
Published: October 2017

<p>The objective of this study was to explore the information on the microhabitat preference of asteroidea in Hari Island Waters, Southeast Sulawesi. The specimens were collected in August 2012 and December 2012. The methods used in this study were road sampling technique, freehandpicking, and observation. The geographical coordinate position of the asteroidea and microhabitat were recorded by using GPS and then mapped by using the ArcGIS 10.1. Asteroidea map was overlayed with microhabitat map to determine the microhabitat preference. The study found 9 species of asteroidea belonging to 7 generas, 4 families, and 2 orders. All the asteroidea were relatively common species in the tropical shallow waters. The species were distributed along sides of the island with majority found in the northern side. The dominant species, <span style="text-decoration: underline;">Linckia</span> <span style="text-decoration: underline;">laevigata</span>, was found in all microhabitat which had beed adapted to various microhabitat conditions and water fluctuation. Based on area of distribution and population density, seastar tended to use reef coral as its microhabitat preference since reef coral could serve as a food source and habitat protection.</p> <p>Keywords: Seastar, microhabitat preference, Hari island</p>
GONADAL DEVELOPMENT OF DOMESTICATED CORAL TROUT (Plectropomus leopardus) REARED IN FLOATING NET CAGE
Authors: Sembiring Sari BM , Andamari R , Muzaki A , Wardana I K , Hutapea J H , Widya A Ni Wayan 
Published: October 2017

<p>Research on Coral trout breeding has been started since 2002 at the Institute of Mariculture Research and Development and currently some hatcheries are being developed around the institute using natural broodstock. To promote the success on this breeding program, it is necessary to study the reproduction development of domesticated coral trout. The fishes were reared in floating net cage. Observation were conducted on 163 fishes in June 2013 with body weight range from 710 -2020 g (average of 1.393 g) and total length with range of 34-49.5 cm. Fishes were dissected and taken out their gonad for histology preparedness. Histology analyses found that there were 156 female, 2 hermaprodite, 2 male, and 3 unidentified fishes. All female fishes were on early gonadal development (stage I and II with gonadal maturation index of observed coral trout ranged from 0.1 to 1.83). Further analyses showed that several different stages of gonad were found in the same gonad and concluded that coral trout was multiple spawnning order (asynchrounous). Based on the data above, it was concluded that gonad maturation of Coral trout is able to develop in domestication system in floating net cage.</p> <p>Keywords: Gonad, Coral trout (Plectropomus leopardus), hystology, floating net cage</p>
VERTEBRAL DEVELOPMENT AND PROTEASE ACTIVITY OF LARVAL MILKFISH, Chanos chanos Forsskal IN DIFFERENT REARING MEDIA
Authors: Aslianti Titiek , Nasukha Afifah , Setyadi Irwan 
Published: October 2017

<p>The milkfish (<span style="text-decoration: underline;">Chanos</span> <span style="text-decoration: underline;">chanos</span> Forsskal) seed quality is an important factor for supporting the fisheries industrialization program . The egg fertility and larval rearing management are two main factors to improve the quality of the seed. The aim of this research was to obtain the information about those two indicators on milkfish larvae, reared in different media. About 100,000 eggs were located in 6 units of the outdoor concrete tank with volume of 6 m<sup>3</sup>. Larvae were reared due to the rearing standard procedure while the feeding management was adapted during larvae development. Two different treatments in larval rearing medium were with and without the addition of molasses, subsequently in triple trials. This study started from hatching day (0 DAH) until the end of larval rearing period (16-18 DAH). The growth parameters such as vertebrae analyses and survival were taken in the end of research periods, while protease assessment was analyzed every day using tyrosine and casein standard methods. The results showed that the molasses addition produced a higher growth (TL 12.95±0.87 mm) and survival rate (87.66±1.52%), better vertebral performance (44-45 segments), and higher protease activity (0.1392-0.3863 U/ml/min) than without molasses addition. The results indicated that molasses addition in larvae rearing medium improved the larvae quality.</p> <p>Keywords: Protease enzime activity,milkfish seeds, molasses, vertebrae</p>
INTRA-SEASONAL VARIABILITY OF NEAR-BOTTOM CURRENT IN THE HALMAHERA SEA
Authors: Wattimena Marlin C , Atmadipoera Agus S , Purba Mulia , Koch-Larrouy Ariane 
Published: October 2017

<p><em>The secondary entry portal of the Indonesian Throughflow (ITF) from the Pacific to Indian Oceans is considered to be via the Halmahera Sea (HS). However, few ITF studies have been done within the passage. This motivated the Internal Tides and Mixing in the Indonesian Througflow (INDOMIX) program to conduct direct measurements of currents and its variability across the eastern path of the ITF. This study focused on the intra-seasonal variability of near-bottom current in HS (129°E, 0°S), its origin and correlation with surface zonal winds and sea surface height over the equatorial Pacific Ocean. The result showed a strong northwestward mean flow with velocity exceeding 40 cm/s, which represented the current-following topography with the northwest orientation. Meridional current component was much stronger than the zonal component. The energy of power spectral density (PSD) of the current peaked on 14-days and 27-days periods. The first period was presumably related to the tidal oscillation, but the latter may be associated with surface winds perturbation. Furthermore, cross-PSD revealed a significant coherency between the observed currents and the surface zonal winds in the central equatorial Pacific zonal winds (180°E-160°W), which corroborates westward propagation of intra-seasonal sea surface height signals along the 5°S with its mean phase speeds of 50 cm/s, depicting the low-latitude westward Rossby waves on intra-seasonal band.</em></p> <p><em> </em></p> <strong><em>Keywords</em></strong><em>: current, equatorial Pacific Ocean, zonal winds, sea surface height, Halmahera Sea</em>
SCREENING ON THE POTENTIAL BIOACTIVE COMPOUNDS OF ANTIBACTERIAL ACTIVITY IN SOFT CORAL COLLECTED FROM SOUTH BANGKA ISLAND WATERS AND LAMPUNG BAY
Authors: Rozirwan Rozirwan , Bengen Dietriech G , Zamani Neviaty P , Effendi Hefni , Chaidir Chaidir 
Published: October 2017

<p><strong><em>ABSTRACT</em></strong><strong><em> </em></strong></p> <p><em>Soft corals contain bioactive compounds that can be used as a marine natural product. Th</em><em>e</em><em> </em><em>puposes of this </em><em>study </em><em>was</em><em> to determine of the soft corals inhibition potential for antibacterial activity. The methodology </em><em>in this study included</em><em> field sampling, extraction (in the solvent of n-hexane, ethyl acetate and methanol), antibacterial bioassay, and briefly describe the type of soft coral that possesed the highest inhibition. </em><em>In sampling treatment, the biomass among</em><em> wet </em><em>samples and </em><em>dry </em><em>samples </em><em>varied</em><em>. The</em><em> highest shrinkage </em><em>due to drying</em><em> </em><em>was found in</em><em> </em><em><span style="text-decoration: underline;">Nephthea</span></em><em>, followed by <span style="text-decoration: underline;">Lobophytum</span> and <span style="text-decoration: underline;">Sarcophyton</span>, while the lowest </em><em>wa</em><em>s </em><em>found in </em><em>the genus of <span style="text-decoration: underline;">Sinularia</span>. Extracted from 12 samples of soft coral</em><em>,</em><em> the lowest </em><em>extract </em><em>weight </em><em>was found </em><em>in the semi-polar solvent (EtOAc), while the </em><em>extract </em><em>weight </em><em>of </em><em>n-Hex and MeOH </em><em>was </em><em>var</em><em>y</em><em>. </em><em>Inhibition power from all extract </em><em>sample</em><em>s</em><em> </em><em>was found on soft coral extract in </em><em>the EtOAc and MeOH</em><em> solvents.</em><em> The highest value of inhibition </em><em>power</em><em> was found in </em><em>soft coral of </em><em><span style="text-decoration: underline;">Sinularia</span></em><em> <span style="text-decoration: underline;">polydactyla</span></em><em> <span style="text-decoration: underline;">and</span> <span style="text-decoration: underline;">S. Flexibilis</span> within strong catogery.</em><em> </em><strong><em></em></strong></p> <p> </p> <strong>Keywords</strong>: bioactive compounds, <em>Lobophytum</em>, <em>Nephthea</em>, <em>Sarcophyton</em>, <em>Sinularia,</em> soft coral
CHARACTERISTICS OF LIPID BIOMARKERS (N-ALKANES, FATTY ACIDS, STEROLS, N-ALKANOLS AND ISOPRENOID) IN ESTUARINE SEDIMENTS OF MUARA ANGKE JAKARTA BAY AND CILINTANG-UJUNG KULON
Authors: Nugraha Mohammad Agung , Prartono Tri , Sanusi Harpasis Slamet 
Published: October 2017

<p><strong><em>ABSTRACT</em></strong></p> <p><em>Lipid</em><em> </em><em>biomarkers as specific organic compounds can be used to evaluate the </em><em>possible </em><em>contribution of organic carbon from different sources or to</em><em> </em><em>trace the biological origin of molecules. The purpose of this</em><em> </em><em>research was to assess the contribution of sedimentary organic of origin based on the characteristics of lipid biomarkers in the Muara Angke Estuary-Jakarta Bay and Cilintang-Ujung Kulon. Single sediment sample were</em><em> </em><em>collected at the 10 cm deep from the top sediment. Those samples were extracted by soxhlet apparatus and fractioned prior to GC-MS analysis. All of those sediment showed different characteristics of biomarker (n-alkanes, fatty acid, sterol,n-alkanols and isoprenoid). </em><em>They</em><em> indicated the different of contribution of organic material input</em><em>s</em><em> influenced by the activity of the upland and surrounding the estuary. </em></p> <p><em> </em></p> <strong><em>Keywords</em></strong>: <em>estuary sediment, GC-MS, lipids biomarkers</em>