bluuebunny/crossref_metadata_2025_split huggingface dataset:
Utilisation of fish skin waste as a collagen wound dressing on burn injuries: a mini review
Authors: Afifah A , Suparno O , Haditjaroko L , Tarman K 
Published: October 2019

Abstract
The fish processing industries produce wastes such as skin, fish scales, stomach contents, and bones. Those organic wastes has not been widely used. The biggest content of fish processing industry is collagen. Fish skin has the highest collagen content (5%-30%). Collagen has been widely used in pharmaceuticals, cosmetics, and food. One of the benefits of collagen is as a wound dressing on burn injuries. Collagen as the most abundant fibrous protein in fish is the main constituent of the extracellular matrix (ECM). ECM is a dynamic substance between cells in a tissue and has the ability to improve the tissue functions. Burn injuries are one of the types of wounds that has a long healing phase, which requires intensive treatment. Severe burn injuries could make people who experience it have traumatic and paralysis that affects the entire organ system. Collagen wound dressing was expected to be able to engineer tissue and accelerate cell regeneration to replace or regenerate damaged tissues. This paper will describe the potency of fish skin waste, problems in healing burn injuries, collagen extraction, and collagen application as wound dressing.
Potency of reef fishes in Tuhaha bay waters, Central Maluku Regency, Maluku Province, Indonesia
Authors: Sahetapy D , Retraubun A S W , Bengen D G , Abrahamsz J 
Published: October 2019

Abstract
The research aimed to provide data on taxa composition, density, standing stock and potency of reef fishes at Tuhaha bay waters in 2017. There were 35 families, 105 genera and 243 species of reef fishes found in Tuhaha bay. Four areas of coral reef at good until excellent categories and various habitat had high species richness of reef fishes. Species richness, density and standing stock of major reef fishes species were higher than target and indicator species. Potency (biomass) of economically food fish (target species) ranged from 1.65 - 5.59 tons ha−1 of coral reef (total 2.93 tons ha−1). Total potency, Maximum Sustainable Yield and Allowable Total Catch of economically food fish in 389,70 ha of Tuhaha bay coral reef area were 1,141.82, 590.91 and 456.73 tons, respectively. The status of reef fishes in two coral reef areas belonged to a high category, while the other nine areas had a moderate category.
A Broker: role and function in small pelagic fish marketing in traditional market in Ambon
Authors: Apituley Y M T N , Savitri I K E , Bawole D , Tuapetel F 
Published: October 2019

Abstract
This research was conducted in Pasar Mardika-Ambon, on June to July 2018. Five of the ten brokers in that market were taken as samples and observed as well as interviewed in depth. The results show that the role of the Brokers in the fresh fish marketing process, especially in that market, which is known as the main traditional market in Ambon is very large. It can be seen from the percentage of fish passing through them. Approximately 90% of the fishermen’s catch (especially purse seine) must pass the brokers for further distribution to consumers through retailers. For this job, they will earn 10% of fishermen’s sale, both those distributed to retailers and those sold to Cold Storage. Some fishermen argue that the existence of broker is very helpful in the marketing process, but some fishermen also complain about their presence in the market. When fishermen experience problems and need assistance (money), the broker will immediately reach out to help. The assistance must still be returned by the fishermen but the return time is flexible.
Numerical simulation of tidal bore in Kampar river: a preliminary study
Authors: Abdullah F A R , Ningsih N S , Rachmayani R 
Published: October 2019

Abstract
Tidal bore is a very rare natural phenomenon, in which the flow of the river goes upstream. It usually happens close to the estuary. In Indonesia, it happens at Kampar river, Riau province. Some factors that cause this phenomena are tides waves and water bottom topography. In this paper, we simulated the propagation of tidal bore in the Kampar river based on shallow water equations (SWE). We used the staggered grid conservative scheme to discretize the SWE. Next, we apply bottom topography of Kampar river and tides elevation profile there into our scheme. Finally, we present numerical simulation of tidal bore propagation along the Kampar river. The result shows that the river discharges have a quite significant effect on increasing bore elevations. The friction coefficient has an important role on wave attenuation of tidal bore propagation.
Species identification and spawning of sea turtle at Meti Island North Halmahera Regency
Authors: Rupilu K , Fendjalang S N M , Payer D 
Published: October 2019

Abstract
Sea turtles are large, air-breathing reptiles that inhabit tropical and subtropical seas throughout the world. With long lifetimes and wide-ranging migration patterns, sea turtles are exposed to many sources of danger both in coastal area and in the open sea, including environmental accidents. Sea turtles are most endanger and threaten with extinction, many are listed in the IUCN Red List or at CITES list. The objective of this study was to identify sea turtles species in Meti Island, their nesting area and its characteristics. Data on nesting area obtained from direct observation and interview with the local community. The result showed that there are three species of sea turtles found in Meti Island i.e. Chelonian mydas, Eretmochelys imbricata, and Lepidocheys olivacea. There are two locations of nesting area i.e. the coastal area of Meti Island and Pasir Timbul Island The characteristic of the substrate at nesting area was medium sand, fine sand, and coarse sand. The slope of the coast of nesting area is approximately 350 at Meti Island while the upper side at Timbul Island was steeper with approximately 400. Marine flora at the nesting site is dominated by seagrass and sargassum which is suitable for nesting area for sea turtle. Shore vegetation at Meti Island consist of Hernandia nymphaeifolia, Scaevola taccada, Thespesia populnea, Pandanus sp, Guettarda speciosa, Terminalia catappa, Crinum asiaticum, Millettia pinnata, Cycas circinalis, Thuarea involute, Cardia subcordata while shore vegetation of Pasir Timbul Island consist of Ipomoea pes-caprae, Wedelia biflora, Spinifex littoreus, Scaevola taccada, Argusia argentea, Terminalia catappa, Pandanus sp, Hernandia nymphaeifolia, and Cocos nucifera.
Investigation of fuel consumption on an operating ship due to biofouling growth and quality of anti-fouling coating
Authors: Hakim M L , Nugroho B , Nurrohman M N , Suastika I K , Utama I K A P 
Published: October 2019

AbstractThis article will look into to the environmental and economic issues in the maritime sector that arise due to biofouling. For the shipping industry, biofouling is known to increase hull roughness that would lead to an increase in friction resistance and fuel consumption. Here we present a short review regarding ship-hull roughness due to biofouling and its associated increase in skin friction drag, and analysis of fuel consumption from an operating ship with two different anti-fouling coating. The data shows that a higher quality antifouling would result in a low biofouling attachment on the hull surface, resulting in a lower fuel consumption.
The effect of joints model to the vibration characteristics of wood
Authors: Lekatompessy D R , Zubaydi A 
Published: October 2019

Abstract
The One piece of the wooden beam has different vibration characteristics compared to the two pieces of wood with a joint. One of the parameters measured is the dynamic stiffness of wood. The method used is a technique in which the vibration excitation test using a hammer with a rubber head. The wood used in this study is Gofasa (vitex cofassus). The Properties of wood was using the data from previous studies. Vibration characteristic of a piece of wood was used for comparison purposes. Two pieces of wood have joined and secured by bolts. Cantilever beam model has used with the knock in a perpendicular direction to the wood fibres. The joints model used to excitation test is the plain scarf, hooked scarf, half lap splice, and tabled splice. All of these models were tested to determine the characteristics of vibration. The results showed the different vibration characteristics for each model. The results are used as a recommendation of the best models in distributing the vibration from the vibration source.
Study on development of shipyard type for supporting pioneer ship in Indonesia
Authors: Pratama P , Fadillah A 
Published: October 2019

Abstract
Abstract— Based on the geographical conditions of Indonesia, especially the eastern region of Indonesia, a national sea transportation system is needed that can be a bridge for remote, isolated and undeveloped islands using pioneering sea transportation. The problem is when the pioneer ships carry out maintenance and repairs, where the pioneer ship population of 82% operates in the eastern part of Indonesia and 18% operates in the western region of Indonesia, while 70% of shipyards are located in Western Indonesia and the remaining 30% are located in Eastern Indonesia. The purpose of this study is to determine the appropriate type of shipyard. The methods used in this study were the fishbone and SWOT methods. As many as 11 locations in Indonesia are selected for surveys. Construction of shipyards for pioneer ships takes into account shipyard availability in the area of operation, the number and type of vessels operating. The results show that the best shipyard location to support the operation of pioneer ships is located in the Bitung Region or in the Sorong Region with the type of shipyard in the form of a slip way.
Antimicrobial activity of fungi isolated from the marine sponges collected from Sekotong Beach Lombok, Indonesia
Authors: Julianti E , Singgih M , Ikram M R , Naufal A , Putra M Y , Hadi T A 
Published: October 2019

Abstract
The search for new antibiotics from a variety of sources that have the potential to produce bioactive metabolite compounds is essential to solve the increasing problem of microbial resistance. Recently, one of the most widely studied for new antimicrobial sources is marine derived fungi. The aims of this study were to isolate endophytic fungi of marine sponges collected from Sekotong Beach Lombok, Indonesia and determine their antimicrobial activity. Fungi isolation were conducted in yeast extract, peptone, and dextrose (YPD) agar medium and each pure fungi was fermented for 21 days in YPD broth medium. Culture media and mycelium were separated by filtration method. The culture media was extracted by liquid liquid extraction and mycelium was extracted by maceration method using ethyl acetate. The dried extracts then tested for their antibacterial activity against Escherichia coli ATCC8739, Staphylococcus aureus ATCC6538, and Candida albicans ATCC 10231 using paper disk diffusion method. Extracts which showed antimicrobial activities on 250 ug/disk content were determined their minimum inhibitory concentration (MIC) and minimum bactericidal or Fungicidal concentration (MBC or MFC). The results of this research were obtained 12 fungi isolates that were coded as FSKT1 until FSKT12. The lowest MIC and MBC value against E. coli was showed by mycelium extract of FSKT10 with concentration of 128 and 256 ug/mL, respectively. The lowest MIC and MBC value against S. aureus was showed by medium extract of FSKT9 with concentration of 64 ug/mL and against C. albicans with concentration of 128 and 512 ug/mL, respectively. The antimicrobial activity observed in this research indicates that the endophytyc fungi of the marine sponge could be considered as new sources of antibiotics.
A hybrid wavelet neural network (HWNN) for forecasting rainfall using temperature and climate indices
Authors: Ghamariadyan M , Imteaz M A , Mekanik F 
Published: October 2019

Abstract
Rainfall forecasting plays an important role in water resources management and also for controlling the unusual events related to the rainfall. This study aims to forecast monthly rainfall from antecedent monthly rainfall, temperature and climate indices using a hybrid wavelet neural network (HWNN) model. The discrete wavelet transform is used incorporation with a conventional ANN model. The skilfulness of the proposed model is compared with the observed rainfall and the ANN model. The results show that the HWNN model provides a good fit with the observed rainfall data particularly in facing the extreme rainfall. The decomposed sub-series obtained by wavelet transform can extract invaluable information which is enormously useful for future rainfall prediction. The results confirm that the hybrid model considerably improves the neural network ability to predict future rainfall.
Dynamic characteristics of liquid sloshing in cylindrical tanks filled with porous media
Authors: Tsao W H , Hwang W S 
Published: October 2019

Abstract
The dynamic characteristics of liquid sloshing in cylindrical tanks filled with porous media are analyzed in this paper. As the tank is subjected to the small external excitations, the flow is assumed to be in Darcy’s flow regime, and then the porous medium can provide damping effect linearly proportional to the fluid velocity. Based on the pore flow theory, the linear equivalent mechanical model with the damping effect due to porous medium is established. This equivalent model consists of a rigidly fixed mass and infinite sets of mass-damping-spring systems, which can exert the same total dynamic force as the linearized actual fluid field. The equivalent system can explain the dynamic characteristics of each modal response of sloshing in a cylindrical porous-medium tank. Therefore it is more convenient to analyze the sloshing behavior from the structural dynamic analysis point of view. By this model, the natural frequency and damping ratio of the cylindrical porous-medium tank are revealed. Both parameters are related to the tank dimensions, porosity and permeability of the porous medium.
Foam glass from municipal waste as a lightweight aggregate for cement mortar
Authors: Wattanasiriwech D , Nontachit S , Manomaivibool P , Wattanasiriwech S 
Published: October 2019

Abstract
Municipal waste glass has long been a problem because of its difficulty in disposal. In Chiang-rai province alone, it was approximated that improperly treated glass waste amounts to 20,000 kg per annum. Foam glass is a porous insulating material which provides the advantage of low-thermal conductivity, low density and fire resistance. This research aimed to prepare foam insulating glass using waste glass collected from local municipality. The glass was first cleaned and then crushed using a hammer mill. Further grinding using ball milling technique was done until glass powder was obtained. With the use of proper amounts of foaming agent, calcium carbonate (CaCO3), and binder, cassava gel, glass foams could be prepared at the temperature of 750 °C. Microstructure was observed using an optical microscope, while density was measured using water replacement. The obtained foam glass has a bulk density of 0.535 g/cm3 with approximated porosity of 77%. To observe ability as a lightweight aggregate, cement mortar with different amounts of glass foams was prepared. It was found that thermal conductivity linearly decreased while compressive strength increased when the amount of the foamed glass was increased. Compressive strength and thermal conductivity of the foam glass were estimated to be 2.43 MPa, of 0.23 W/m.K, making it a new economically promising lightweight aggregate for cement mortar.
Evaluation of high performance cementitious grouts for connecting precast concrete bridge deck panels
Authors: Yang Z F , Brown H J 
Published: October 2019

Abstract
The use of full-depth precast concrete panels for rehabilitation of bridge decks allows fast installation and all-weather construction. Typically, precast panels are prefabricated in a well-controlled environment, resulting in strong and durable products. Undoubtedly, they will perform well under the traffic loading and weathering. However, the panel joints that are closed later with grout pour may degrade prematurely, leading to a less desirable composite action. Obviously, the lack of overall system performance causes concerns that limit the wider application of this innovative construction method. Conventionally, cementitious grouts, epoxy mortars or polymer concretes are used for the closure pour. In general, epoxy mortars or polymer concretes have extremely low permeability and dry shrinkage, as well as good adhesion with the substrate; but they are difficult to mix and clean, very sensitive to moisture variations, and incompatible with the substrate under thermal and mechanical loads. As a result, deficient bonding may occur, particularly when longitudinal post-tensioning is not provided, causing leaking and rusting. Oppositely, cementitious grouts are easier to mix and more compatible with the concrete substrate; however, they are more prone to shrinkage. More recently, advances in cementitious materials resulted in the development of Ultra-High Performance Concrete (UHPC). While this material has demonstrated exceptional performance when used for the closure pour; it requires special mixing to well disperse the particles and careful attention must be paid to the construction and curing practices to achieve enhanced mechanical and durability properties. As a result, testing of various types of grout materials is essential to establish the quality and serviceability of these materials. It is the intention of this paper to evaluate the performance of different cement-based grouting materials and to provide bridge engineers with useful database as to what materials are preferred for a specific project.
The analysis of influential factors for urban water supply system considering causality with time-series data
Authors: Ryu J W , Park H K 
Published: October 2019

Abstract
Recently, the research on critical infrastructures have been extended its boundary and some previous research analysed interdependency between infrastructures tried to suggest operation and management policy of the infrastructure. This highlighted the importance of systemic approach such as System Dynamics. But there still exist the limit to select the modelling component in terms of causality. In this study, convergent cross mapping was applied to time series variables in Songpa-gu and Gangdong-gu in Seoul, South Korea. Selected variables include operating variable of water supply system, floating population and meteorological variables and 330 observations were collected. The result shows that daily average temperature and floating population that are equivalent to mobile population influences to the daily water supply, and vice versa. Other weather factors such as average precipitation and wind speed showed little causality with the daily water supply. The influential factors of water supply system can be investigated with convergent cross mapping and the result can be utilized for the pre-process of other methodology such as LSTM in short-term water demand prediction. It is expected to collect more available data to improve this study further.
Water quality risk assessment for drought conditions: A case study of the Korean Nakdong River basin
Authors: Kim J -S , Lee J -H , Park S -Y , Chen J , Chen H 
Published: October 2019

Abstract
As the frequency of drought from climate change increases and the severity of drought become worse, it is imperative to prepare appropriate countermeasures against severe droughts. Despite the severe impacts of droughts on coupled humans and environmental systems, we do not fully understand the consequences of severe droughts affecting the environment. Therefore, the present study proposed a quantitative assessment index for water quality risk for extreme droughts to improve the safety of water environment management by providing flows to areas vulnerable to the drought. The application of this study is the Nakdong River basin in Korea, which has assessed the vulnerability of water quality to severe droughts as water quality deterioration problems continue to be experienced event after the river restoration project was completed. The results of this study are expected to provide scientific environmental drought monitoring information in a changing climate.
Research on the differential settlements of mat foundations
Authors: Ma C-M , Chen Y-Y 
Published: October 2019

Abstract
Mat foundation is a very commonly used foundation type. There are many advantages in adopting mat foundations including the effects of loading compensation, full utilization of underground space, lowering foundation settlements and increasing the factor of safety of bearing capacity for foundations etc. In addition, because of the high stiffness of the mat foundation and foundation girders the differential settlements could be effectively decreased, which would in turn increase the safety of structures. The differential settlements of the foundation will produce extra stresses in the structure. At the worst it will make the structure members failure. There are many factors which would affect the differential settlements of the foundation, which include the uneven distribution of structure column loading, the subgrade reaction of foundation soils (or so called soil spring coefficient), the combined stiffness of the foundation plate and foundation girders, the shape and size of the mat plate etc. The main objective of this research is to use the finite element method to simulate the interactions between the mat foundation and the underneath soils. It will focus on the systematic research on all possible factors affecting the differential settlements of mat foundations. The influence of each factor on the differential settlements will be studied and identified. The influence charts for the differential settlements for each individual factor will be proposed. Finally a reliable method using these influence charts to predict the differential settlements of mat foundations will be developed, which will be verified by practical examples.
A prediction model of bubble size from experimental factors and fluid properties using multiple linear regression algorithm
Authors: Park G B , Park H K 
Published: October 2019

Abstract
In a clean water test, the bubble diameter coming out through the circular diffusers was measured by photographic method and binary image analysis. Strong correlation was found between bubble diameter and superficial velocity. The depth of water has been added to existing experimental factors that include pore size and superficial velocity. By using dimensional analysis and multiple linear regression algorithm, a prediction model of bubble diameter was developed considering fluid properties and experimental factors including the depth of water. The developed model(EF-Model) was compared with the existing bubble diameter prediction models for the sample data. As a result of estimating the bubble diameter for the superficial velocity, the EF-Model has a lower RMSE and higher accuracy result than the existing models.