bluuebunny/crossref_metadata_2025_split huggingface dataset:
TURBULENT MIXING PROCESSES IN LABANI CHANNEL, THE MAKASSAR STRAIT
Authors: Naulita Yuli 
Published: January 2018

Study on turbulent mixing processes in Labani Channel, the Makassar Strait, was conducted by using the INSTANT (International Nusantara Stratification And Transport) program dataset, in Juli 2005. The turbulent mixing process was evaluated using Thorpe method, where the overturning eddies were revealed by density inversions in CTD (Conductivity Temperature Depth) profiles. All individual identified-overturn regions was validated by the GK’s test (Galbraith and Kelly test) where at first noise on CTD signals had been removed by applying wavelet denoising. A large number of overturn regions with Thorpe scale (LT) less than 0.5 m were detected in the thermocline layer of Makassar Strait. Based on linear relationship between Thorpe and Ozmidov scale, order of magnitude of the turbulent energy kinetic dissipation rate in Labani Channel was estimated about 10-11- 10-5Wkg-1 and density eddy diffusivity Kρ(10-6 – 10-2) m2/s . The strong of turbulen mixing was found at the layer of NPSW at 150 m depth and NPIW at 300 m depth, indicated by high values of Kρ (O = 10-3 – 10-2 m2s-1). It reveals that turbulent mixing has an important role on determining ITF water mass character. Keywoods: turbulent mixing, wavelet denoising, overturn region, Thorpe method, Labani Channel, Makassar Srait.
RESPONSIBLE FISHERIES MANAGEMENT OF MINI PURSE SEINE IN THE LAMPUNG BAY AREA
Authors: Tanjov Yulia Estmirar , Yusfiandayani Roza , Mustaruddin . 
Published: January 2018

Lempasing is a Coastal Fishing Port (CFP) which located in Bandar Lampung. It is one of the centers of fisheries activities in the city. One of the fishing gear which operated by most of fishermen in Lempasing is mini purse seine. Mini purse seine fishing activities in the Lampung Bay Area and Lempasing CFP is not in accordance with the conditions of the surrounding waters area. The research was conducted in the Lampung Bay Area and Lempasing CFP, Lampung. This study aims to: 1) determine the status of fisheries resources utilization, 2) to describe the dominant fish caught by mini purse seine. Analysis methods were used in this study namely: 1) Fishing Power Index (FPI), Catch Per Unit Effort (CPUE), and Maximum Sustainable Yield (MSY) to determine the status of fisheries resource utilization. The dominant small pelagic fishes caught were scad fish Selaroides sp., mackerel fish Rastrelliger sp., longnose trevally fish Carangoides chrysophrys. The result showed that Fox model was the best fits models with estimated maximum sustainable yield of 15.5 ton and fishing effort of 992 trip/year for mini purse seine. The longnose trevally fish in lampung bay area in do not exceeded the optimal catch fish condition can be used to sustainably. In these condition is necessary to wisely manage and setting the catches to not exceed the allowable catch of the small pelagic fish, so the stock of small pelagic fish in the Lampung Bay Area can be used sustainably.
RATIO OF THE MAIN DIMENSIONS AND STATIC STABILITY TRADITIONAL PURSE SEINER IN PINRANG
Authors: Azis Muh. Arkam , Iskandar Budhi Hascaryo , Novita Yopi 
Published: January 2018

The fishing vessel is the main vehicle of the fishermen to go to fishing ground and hauling purse seine especially fishing gear. Pinrang Regency ships traditionally built without calculation of naval architecture. Where the purse seine fishing gear in Pinrang Regency has length 330 m nets with a depth of 36 m. The purpose of this research was to examine the main dimension ratio in particular design and static stability of the vessel purse seine in Pinrang Regency. Method of using a case study on two types of vessels have different relative and analyzed by numerical simulation, calculate the ratio of the main dimensions and static stability. The results of this research are the vessels in Pinrang kasko model has the shape of a round bottom and slim body as well as the ratio of the dimensions of the vessels only L/D purse seine LOA 24 m more than the standard reference of vessels (encircling) in Indonesia and on the value of the static stability by the IMO, with a purse seine vessel Pinrang already has a good stability. However, in both types of vessel purse seine size 20 m that has better stability. Keywords: design, fishing vessel, purse seine, stability
WATER QUALITY OF POST CONTAMINATION OF MARINE DEBRIS IN THE KUTA BEACH OF BALI
Authors: Putra Aprizon , Husrin Semeidi 
Published: January 2018

Kuta Beach of Bali is one of the top tourist destination for a vacation in Bali Island. The beauty of the beach with white sand, ocean waves are excellent for surfing, sunset, and tourism infrastructure which detailed makes very famous Kuta beach to foreign countries. However, in recent years the beauty of Kuta beach which has become an icon of tourism in Bali began plagued by high levels of contaminant of the marine debris on the beach, mainly contamination of the marine debris that often accumulate in Kuta beach every season West. The purpose of this study was to determine the condition of water quality based the quality standards of sea water KMNLH Number 51 Years 2004 post contamination of the marine debris that occurred in the Kuta beach of Bali. The method used is to perform measurements using a "Water Quality Checker" at 8 measuring stations. Water quality parameters which measured, namely physical parameters (temperature, turbidity) and chemical parameters (pH, salinity, DO). The results showed a temperature with the range of value 29.10-29.40°C, turbidity with the value range 0.30-18.70 NTU, pH with the value range 8.10-8.15 DO with the value range 6.85-7.38 mg/L and salinity with the value range 30.60-30.90%o. Based on the measurement data obtained indicates conditions of the waters chemistry of still suitable and condition of the waters physical showed the value of the temperature is still suitable, except the turbidity value shows the value does not suitable in the station 1, 2 and 8. Keywords: Bali, water quality, Kuta Beach, marine debris
REPRODUCTIVE ASPECTS OF SCALLOPED PERCHLET, Ambassis nalua (HAMILTON, 1822) IN PABEAN BAY INDRAMAYU, WEST JAVA
Authors: Arianti Nisha Desfi , Rahardjo M.F. , Zahid Ahmad 
Published: January 2018

ABSTRACTScalloped perchlet, Ambassis nalua, is one of fishes in Pabean Bay, Indramayu. This research aims to determine the reproductive aspects of Ambassis nalua in Pabean Bay Indramayu including sex ratio, spawning season, first maturity, fecundity and spawning pattern. Fish samples were collected by trap net and trammel net at three sites in Pabean Bay from April to October 2015. A total of 424 of A. nalua were caught, consist of 114 males and 310 females; with total length ranged from 38.04 to 112.63 mm and total weight ranged from 0.37 to 25.44 g. Sex ratio of mature fish was 1:1.9. The mature males and females were found in every month of sampling period. The gonado-somatic index (GSI) ranged from 0.40 to 0.83 and 2.36 to 4.54 for male and female, respectively. The peak of spawning season was found in September. The first maturity (Lm50) for male and female were 79.17 mm and 91.25 mm, respectively. The fecundity varied from 3,451–32,465 eggs. Egg diameter distribution shows that spawning pattern of A. nalua was batch spawner. Keywords: Ambassis nalua, spawning season, sex ratio, reproduction
POPULATION BIOLOGY OF MUD CRAB Scylla serrata - Forsskal, 1775 IN MANGROVE ECOSYSTEM OF SUBANG DISTRICT, WEST JAVA
Authors: Kumalah Ayu Annisa , Wardiatno Yusli , Setyobudiandi Isdradjad , Fahrudin Achmad 
Published: January 2018

The study of population biology of mud crab Scylla serrata is necessary to analyse the population dynamics, such as growth of crabs, size distribution, mortality and exploitation rates of S. serrata. Population biology data collection was carried out from March to June 2016 at estuary and silvofishery areas of three stations (Mayangan, Tanjung Tiga and Blanakan villages). Data were analyzed using analytical methods of FISAT-II (FAO-ICLARM Stock Assessment Toool II)instruments. The results showed the growth of S. serrata male in Subang distric was positive allometric and the female was negative allometric. Growth coefficient (K) ranged from 0.21 to 0.43 in the estuary and from 0.28 to 0.89 in silvofishery area. Exploitation rate in the silvofishery area has been above the maximum exploitation rate. The size distribution of S. serrata in Subang district has the highest frequency at class interval of 106-110 mm (male) and of 101-105 mm. The highest abundance of mature female crabs is in May.Keywords : population biology, Scylla serrata, Subang District
MODIFICATION AND REENGINEERING OF ELECTRONIC FISH AGGREGATING DEVICE AS A FISHING TOOLS BASED ON LED ILLUMINANCE
Authors: Baswantara Arif , Jaya Indra , Yusfiandayani Roza 
Published: January 2018

Fish Aggregating Devices (FADs) is generally made from foliage like a leaf of coconut, palm and nut, but with the development of marine and fishing technology, the FADs could be made electronic ally. Electronic FADs had been developed by using light and sound as an attractor, and was able to aggregate fish but the catch harvest was still relatively low compared with lift net lamp. In this paper we describe the recent development of electronic FADs. The new electronic FADs has 120 watts total power of LEDs as attractor, 12V 12Ah battery as the energy resources, and HDPE as the body of FADs. The lighting of the new is either blue – red light color (RE1) or red-white light color (RE2). The two kinds of lighting are tested and compared and its light distribution underwater case measured in term of the value of luminous flux. The results showed that new FADs work well in the water with light penetration of RE1 was better than RE2. Keywords: FADs, instrument, fishing, light
INVENTORY AND DISTRIBUTION OF MOLLUSC IN CORAL REEF OF BACAN ISLAND WATERS, NORTH MALUKU PROVINCE
Authors: Cappenberg Hendrik A.W. 
Published: January 2018

Bacan Island waters of North Maluku Province consisted of three main tropical ecosystems, namely mangrove, seagrass, and coral reef with the highest marine biodiversity. Mollusc is a group of marine fauna that most of them associated with coral reef. However, little is known about their information in the Bacan Island due to lack of study conducted there. The purpose of this study is to observe the diversity and distribution of mollusc fauna in the coral reef flat of Bacan Island. Mollusc inventory was done using Rapid Reef Resource Assessment (RRA) method by snorkling in the reefs of east coast (25 sites) and west coast (10 sites) of Bacan Island. The molluscs found were directly identified into species level and recorded. Results of inventory show that there are 47 species belong to 19 families with the family of Muricidae is the highest diversity (6 species), while the lowest are Buccinidae, Bursidae, Haliotidae, Olividae, Cardiidae, Isognomonidae and Spondylidae, respectively with only 1 species in each of those families. The highest species number of mollusc was distributed along the east coast of the island (40 species), and the lowest one was in the west coast (37 species). Some species such as Tridacna spp., Pinctada margaritifera and Pteria penguin are important species, because they have economical values. Keywords: biodiversity, molluscs, coral reef, Bacan Island, North Maluku
DENSITY AND THE COVERAGE OF SEAGRASS ECOSYSTEM IN BAHOI VILLAGE COASTAL WATERS, NOTRH SULAWESI
Authors: Fahruddin Muh. , Yulianda Fredinan , Setyobudiandi Isdradjad 
Published: January 2018

Physical seagrass ecosystem damage have been reported in various regions in Indonesia. Seagrass ecosystem damage is caused by human activity such as trampling seagrass and boats that muddy the waters and reduced the density and seagrass cover. This study aims to provide information about the density and the coverage of seagrass. The method used in this research is the transect method measuring 50x50 cm squared at three different locations by considering coastal ecosystems Bahoi village that already exist. Station 1 is near to mangrove habitat, station 2 is right on seagrass habitats, and station 3 is near to coral reef habitat. The results indicated there is six seagrass species that found in the Bahoi village which is Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halophila ovalis, and Halodule uninervis. The density and seagrass cover is shows that the station 1 has the highest density and seagrass cover percentage compared with the other stations. The highest density of seagrass species located in station 1 with 955 individuals/m2, and the lowest was located at station 3 with 699 individuals/m2. While the highest cover percentage is located at station 1 with 270% and the lowest located at station 3 with 229%. Keyword: seagrass ecosystem, density, coverage, Bahoi
THE EFFECT REPLACEMENT OF OXYGEN ON TRANSPORTATION SEEDS GROUPER WITH CLOSED SYSTEM
Authors: Ismi Suko 
Published: January 2018

The location of grouper aquaculture are usually far from the seed source so it takes a long time to transport the seeds. The research purposes was to extend the time by replacing oxygen so the seeds can reach the destination that is located far away with high survival and healthy condition. Previously conducted preliminary research that is transportation with a different length of time 24 hours; 36 hours; 48 hours and 60 hours. The best results of the preliminary study are 24 hour transport which is then used in the main research. In the main study, fish seeds were transported for 24 hours later, oxygen was replaced by: oxygen in disposable plastic bags replaced with new oxygen. Then repackaged to continue transport up to 12 hours; 24 hours; 36 hours and 48 hours. Trasportation conducted with closed system with car. Seeds used were cantik grouper hybrid seed i.e., a crossbreed between female tiger grouper (Epinephelus fuscoguttatus) and male marbled grouper (Epinephelus microdon), a size of 7.0 ± 0.54 cm, with a density of 125 fish / boxes. Grouper seeds were packed with 0.8 mm thick plastic bags, 120cm x 53cm wide, filled with 10 liters of sea water, oxygen is added with a volume ratio of water: oxygen is 1: 3, then put in 75 x 40 x 30 cm styrofoam box. The best result is after fish is transported 24 hours, then replaced oxygen and transported again for 24 hours, so that transportation time can be extended up to 48 hours, with survival rate 98.4%. Keywords: grouper seeds, oxygen replacement, transportation
ECONOMIC VALUATION OF MANGROVES FOREST RESOURCES IN REGENCY OF BANGGAI DAN BANGGAI ISLAND CENTRAL SULAWESI
Authors: Putranto Sugeng , Zamani Neviaty P. , Sanusi Harpasis S. , Riani Etty , Fahrudin Achmad 
Published: January 2018

This study aims to determine how big the value of the total economic benefits of mangrove forest by using the concept of economic valuation to calculate the value of the benefits of natural resources which exist in 9 District of Banggai Regency and Banggai Island Regency located in Peleng Strait Costal Area there are: District of Batui Selatan, Batui, Luwuk Timur, Lamala, Masama, Balantak, Bualemo (in Banggai Regency Area) and District of Buko and Buko Selatan (Banggai Island Regency). The research was conducted in August to November 2016, by conducting field observations and interviews directly to the community and local government. Based on the results obtained that indicate the area of mangrove forest ecosystems in Peleng Strait Costal Area with a broad ± 167 ha, have total value of economic benefits amounted Rp 26,591,841,888/year with the largest contributor to the value of benefits is from the value of indirect benefits that is the value of the benefits of mangrove forests as a buffer abrasion or sea water waves is about Rp 16.030.000.000. The total value of economic benefits can be used as a reference or basic comparison for the community and the government in determining the policy management and utilization of existing mangrove forests. Keywords: mangrove forest ecosystems, benefits value, economicvaluation
SUSPENDED SOLID LOAD OF KAWAL AND GALANG BATANG RIVERS, AND ITS DISTRIBUTION AT GUNUNG KIJANG COASTAL AREA, EAST DISTRICT OF BINTAN
Authors: Rositasari Ricky , Supriadi Indarto Happy , Iswari Marindah Yulia 
Published: January 2018

The research aimed to discover the runoff suspended solid load of Gunung Kijang estuary to coastal area, East District of Bintan. The research was held in May and September 2015. The total suspended solid (TSS) load in five estuaries was measured on May. On September, measurement was focused in two biggest estuaries, Kawal and Galang Batang. The TSS in coastal water area was measured both on May and September. Regarding to five estuaries measured, the lowest TSS came from Angus River while the highest comes from Kawal River. TSS load in May on both estuary were lower than in September. Suspended solid load at the lowest tide period was higher than at the highest tide at both estuaries. In May TSS load in the Kawal estuary was 528.723 mg/sc and Galang Batang estuary was 172.903 mg/sc. In September TSS load in the Kawal estuary was 720.920 mg/sc while Galang Batang estuary was 446.893 mg/sc. These results indicate that tidal patterns and current were major influence on the TSS load in estuaries. Keywords : Bintan, coastal water, estuary, load, TSS
Isothermal sections of the Co–Ni–Ti system at 950 and 1 000 °C
Authors: Li Han , Zhou Peng , Du Yong , Jin Zhanpeng 
Published: January 2018

Abstract
The isothermal sections of the Co–Ni–Ti system at 950 and 1 000 °C were investigated experimentally. Diffusion couples were measured by electron probe microanalysis to construct the phase relations at 950 °C, whereas eleven key alloys annealed at 1 000 °C were investigated using X-ray diffraction and electron probe microanalysis. The ternary phase, τ-(Co,Ni)3Ti (hP24-VCo3), was observed at both temperatures. At 950 °C, continuous solid solutions are formed between CoTi2 and NiTi2 as well as between CoTi and NiTi. Eight 3-phase regions, i. e. Ni3Ti + (Co,Ni)Ti + τ, Ni3Ti + γ-(Co,Ni) + τ, τ + c-Co2Ti + (Co,Ni)Ti, τ + c-Co2Ti + Co3Ti, τ + Co3Ti + γ-(Co,Ni), c-Co2Ti + h-Co2Ti + Co3Ti, L + β-(Ti) + (Co,Ni)Ti2 and L + (Co,Ni)Ti2 + (Co,Ni)Ti, were constructed at 1 000 °C. Considerable ternary solubilities in Ni3Ti, Co3Ti and c-Co2Ti were determined.
Microstructure and magnetic properties of iron–cobalt-based alloys processed by metal injection moulding
Authors: Ma Jidong , Qin Mingli , Ding Xiangying , Khan Dil Faraz , Zhang Houan 
Published: January 2018

Abstract
Fe–Co-based soft magnetic alloys with excellent magnetic properties were prepared by metal injection moulding and hot isostatic pressing. The effect of processing parameters on microstructure and magnetic properties of the alloy were investigated. Good magnetic performance of Fe-50 %Co alloy with a maximum permeability of 9550, saturation induction of 2.42 T, and coercive force of 68.14 A m–1 was achieved. Hot isostatic pressing processing resulted in a near-full density and the achieved saturation induction exceeded the reported value (1.99 to 2.26 T) of Fe-50 %Co produced by metal injection moulding.
Intermetallic precipitation in rare earth-treated A413.1 alloy: A metallographic study
Authors: Samuel Agnes M. , Doty Herbert W. , Valtierra Salvador , Samuel Fawzy H. 
Published: January 2018

Abstract
The present study was performed mainly on A413.1 alloy. Measured amounts of La, Ce or La+Ce, Ti and Sr were added to the molten alloy in the form of master alloys. Samples sectioned from castings obtained from thermal analysis experiments were used for preparing samples for metallographic examination. The results show that addition of rare earth (RE) metals to Al–Si alloys increased the α-Al nucleation temperature and depressed the Al-Si eutectic formation temperature, thereby increasing the solidification range. Depending upon the alloying elements/additives, a large number of RE-based intermetallics could be formed: Al4(Ce,La), Al13(Ce,La)2Cu3, Al7(Cu,Fe)6(Ce,La)6Si2, Al4La, Al2La5Si2, Al2Ce5Si2, Al2(Ce,La)5Si2. Under an electron microscope, these phases appear in backscatter imaging mode in the form of thin grayish-white platelets on the dark gray Al matrix. The average thickness of these platelets is about 1.5 μm. When the alloy is grain refined with Ti-based master alloys, precipitation of a gray phase in the form of sludge is observed: Al12La3Ti2, or Al12(Ce,La)3Ti2. Regardless the alloy composition, the RE/Al ratios remain constant in each type of intermetallic. Rare earth metals have a strong affinity to react with Sr (resulting in partial modification of the eutectic Si particles) as well as some transition elements, in particular Ti and Cu. Iron has a very low affinity for interaction with RE metals. It is only confined to Fe-based intermetallics.
Magnetic properties of amorphous–nanocrystalline Fe–Cr–B–Si–Ni–Nb alloys
Authors: Tavoosi Majid 
Published: January 2018

AbstractMagnetic characterization of amorphous–nanocrystalline Fe–Cr–B–Si–Ni–Nb alloys was the goal of this study. In this regard, three different amorphous Fe40Cr20Si15B15M10 (Nb, Ni, Ni0.5Nb0.5) alloys were prepared using the mechanical alloying technique for up to 20 h and subsequent annealing. The prepared samples were characterized using X-ray diffraction, scanning and transmission electron microscopy, differential scanning calorimetry and vibrating scanning magnetometry. According to the results, amorphous phase can successfully form in Fe40Cr20Si15B15M10 (Nb, Ni, Ni0.5Nb0.5) alloys. The coercivity and saturation magnetization values of the amorphous Fe40Cr20Si15B15Ni10 sample were about 100 Oe and 65.9 emu · g–1. By replacement of Ni with Nb, the coercivity and saturation magnetization values were slightly increased (to about 142 Oe) and decreased (to about 14 emu · g–1), respectively. Regardless of the annealing condition, amorphous–nanocrystalline Fe40Cr20Si15B15Ni10 alloy showed higher saturation magnetization and lower coercivity values in comparison with the samples containing Nb.
Core Competency of Mid-level Public Health Managers in Bangladesh
Authors: Jahan Sharmin , Flora Meerjady Sabrina 
Published: January 2018

Bangladesh has been making remarkable progress in health sector. Despite, there are some areas where further intervention is required. People-centered health systems cannot be strengthened without competent management. Core competencies are the essential knowledge, skills and attitudes required for the practice of public health. This was a first kind of effort to assess the core competencies of mid-level public health managers, working at different tiers of health system in Bangladesh. This descriptive cross-sectional study was conducted from July 2012 to June 2013, to assess the core competencies of mid-level public health managers including Civil Surgeons, Programme Managers, Upazilla Health and Family Planning Officers and Upazilla Family Planning Officers. Data were collected by pretested self administered questionnaire based on competency measuring scale consisting of four grades of scoring. The questionnaires were mailed to 678 managers of whom 26% responded. The male female ratio of the respondents was 8:1 with an average age of 51 years. The level of competency was found, on scale, between aware and knowledgeable. Only 12.4% of the managers had postgraduate education in public health and they obtained higher average scores in all domains. The overall scores of managers in analytical, policy development, communication, cultural competency, community dimension of practice, public health science, financial planning and leadership skills were 2.6, 2.5, 2.6, 2.6, 2.7, 2.3, 2.6 and 2.7 respectively. Some two-thirds (65.7%) of the respondents had short training on different public health areas, and they showed better competency. The study findings suggest that there are scopes of improvement in the competency of mid-level public health managers in Bangladesh. As postgraduation and short training in public health might improve the competency level of the mid-level managers, so education and training for them are thus recommended.