bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biodiversity and social aspects of the Sawo-Lahewa Marine Protected Area, North Nias: a social-ecological mapping
Authors: Abdurrahim A Y , Siringoringo R M , Abrar M , Triyono  , Sari N W P 
Published: October 2020

Abstract
Sawo-Lahewa sea waters, North Nias District, North Sumatra Province was determined to become one of the marine conservation areas on December 22, 2017 through the Decree of the Minister of Marine Affairs and Fisheries Republic of Indonesia Number 54/Kepmen-KP/2017. This stipulation aims to protect, preserve, and utilize the potential of fisheries and important habitats (coral reefs, mangroves, and seagrass) and important species (turtles, dolphins, manta rays, napoleons, lola, dugongs, whale sharks, sea bamboo Isis puridis, Black Coral Anthipatharia, etc.) to support tourism development. This paper aims to map the condition of biodiversity and social aspects in the Sawo-Lahewa Marine Conservation Area by using the social-ecological framework. Using the data on ecological and social conditions were collected during 2014-2015 and updated with 2019-2020 data. The mapping of ecological aspects have involved the condition of coastal-marine ecosystems, including coral reefs, reef fish abundance, reef megabentos abundance, mangroves, and seagrasses) and also oceanographic conditions, meanwhile, the mapping of social aspects including socio-demography and socio-economics aspects. To enrich the analysis, this paper is was also equipped with a discussion of zoning arrangements. Important findings from this study that the sustainability of biodiversity is influenced by the sustainability of local social activities; vice versa.
Identification of marine bacteria HPP.4A and HPP.T13 and its anticancer activity against P388 murine leukaemia cell
Authors: Wijaya A P , Bondar K G , Frederick E H , Igarashi Y , Sibero M T 
Published: October 2020

Abstract
Sea cucumber has been widely studied as a source of bioactive compounds with various biological activities such as antibacterial, antifungal, antioxidant, and anticancer. However, there are a few studies have reported on the biological activity of its associated bacteria. The purpose of this study were to determine the potential of sea cucumber associated bacteria from Panjang Island, Jepara, Central Java, Indonesia as a natural source of anticancer compounds and identify the prospective isolates through DNA barcoding. Bacteria HPP.4A and HPP.T13 were isolated from the gut of sea cucumber Holoturia atra. The bacteria were cultivated in three different media (A3, A11, and A16) then extracted using 1-butanol with maceration method. Cytotoxic assay of each extract was conducted against P388 murine leukaemia cell. Bacteria HPP.4A and HPP.T13 were identified through molecular approach as Sallinicoccus roseus and Sphingobium yanoikuyae with 99.73% similarity. The strongest anticancer activity was showed by Sallinicoccus roseus extract which cultivated in A11 medium while Sphingobium yanoikuyae extract in A3 medium.
Age, growth, and mortality of starspotted smooth-hound, Mustelus manazo (Bleeker, 1854) in southern West Nusa Tenggara waters
Authors: Jatmiko I , Sentosa A A 
Published: October 2020

Abstract

Mustelus manazo (Starspotted smooth-hound shark) is one of the important catch for small scale fisheries in West Nusa Tenggara. This species belongs to the family Triakidae. According to the IUCN Red List, the conservation status of this species is data deficient, which means that there is insufficient information to conduct a proper assessment of conservation status. The objective of this study is to estimate the age, growth and mortality of M. manazo in southern West Nusa Tenggara waters. Length data were collected from January to December 2016 in Tanjung Luar Port, West Nusa Tenggara. Electronic length-frequency analysis (ELEFAN) in R Statistics with package “TropFishR” was used to estimate the population parameter. Length converted catch curve analysis was used to estimate the total mortality. The results showed that von Bertalanffy growth model for male was Lt=122 (1-e(-0.1(t+0.01))), for female was Lt=130 (1-e(-0.18(t+0.02))) and for combined sex was Lt=132 (1-e(-0.1(t+0.01))). Total mortality was estimated at 0.25 year
−1. The results from this study represent basic information to support fisheries management of M. manazo in Indonesia.
Status of polychlorinated biphenyl (PCBs) contamination in several marine and freshwater sediments in the world during the last three decades
Authors: Umasangaji H , Ramili Y , Najamuddin  
Published: October 2020

Abstract
Despite the research on PCBs occurrence in the various matrices in the world, no review has been carried out on the status of these substance contaminations in marine and freshwater sediments during the current periods throughout the globe. The objectives of this paper are to briefly discuss the occurrence of PCBs concentrations within marine and freshwater sediments in several places in the world and to determine which part of marine and freshwater sediments are the most contaminated in the world. The emphasis is on the last three decades namely from 1985 to 2020. The results suggested that during 1985 to 2010, the PCBs concentrations in the sediments ranged between 2 μg.kg−1 and 1648 μg.kg−1. The most elevated was found in Ionian Sea, Italia as the site where connected with high activities of industries, urban and harbor. The lowest one was reported in Bering sea and the Gulf of Alaska as the uncontaminated site during this era. Subsequently, a decade later which was recorded from 2011 to 2020 found the PCBs concentrations in the sediments ranged from 0.036 to 3730 μg.kg−1. The highest concentration was reported at coastal area at the center of Vietnam where linked with the urban and industries sites. Conversely, the lowest one was found at Chao River sediments where connected with the agriculture field. The evaluation of sediments guide lines quality through ERL (Effects Ranged Low) and ERM (Effects Ranged Medium) showed that the most contaminated marine and freshwater sediment in the world during 1985 to 2010 was at Ionian Sea, Italy, whereas in the recent period (2011 to 2020) was found in the Coastal area of Vietnam. According to this evaluation, these locations are high risk to the toxic effect particularly to the benthic organisms. Therefore, these places are high concerned in terms of protection and conservation of some marine biotas.
Genetic diversity information of seagrass Enhalus acoroides and Cymodocea rotundata for the local genetic conservation at North Maluku
Authors: Ramili Y , Bengen D G , Madduppa H , Kawaroe M 
Published: October 2020

Abstract
This study is aimed at analyzing the molecular identification and the level of the genetic diversity of seagrass species as a basis information for the local genetic conservation. Sampling of both species, Enhalus acoroides and Cymodocea rotundata, was carried out at four small islands at North Maluku, namely Hiri, Ternate, Maitara, and Tidore Island. Locus used in genetic analysis is the chloroplast genome (rbcL and matK). The results of this work indicated that the rbcL genetic marker were able to identify species well but were low in discrimination and divergence of species, thus is not give the good results for genetic diversity level. Conversely, matK genetic marker, although a little weak in identifying species, have good results in the discrimination and divergence of species. matK genetic marker were able to provide a description of genetic diversity level. The results of this study found that the level of genetic diversity of E. acoroides (Hn: 13; Hd: 0.862; π: 0.273) and C. rotundata (Hn: 19; Hd: 0.975; π 0.119) were higher at Tidore Island compared to the three others. This indicated that the high genetic diversity at Tidore Island can be used as a basis for local genetic conservation and maintenance of biodiversity.
Institutional capacity building of Bina Hang Tuah youth organization and Tambaan Indah waste bank in the context of plastic waste management in Tambaan Urban Village, Pasuruan City, East Java Province, Indonesia
Authors: Rudianto  , Yudaningtyas E , Kasitowati R D 
Published: October 2020

Abstract
Plastic waste in Indonesia has reached 64 million tons per year of which 3.2 million tons per year is discharged into the sea. Because of this condition, Indonesian coastal waters experience degradation. Plastic waste on the coast can be utilized to add value in the form of premium fuel, diesel and kerosene, using a destilator machine. The study was carried out on the coast of Tambaan Village, Pasuruan, East Java. The results indicate that the beach is clean and the processing results are in line with the community expectations. However, the beach has become dirty again and plastic waste has accumulated. The purpose of this study is to examine the relationship between youth organizations which are responsible for processing plastic waste, and waste banks that currently receive waste from the community. The methods used are analytical Hierarchy Process (AHP) and Partial Least Square (PLS). The two methods are used in the analysis of organizational capacity building and cooperative relations between Bina Hangtuah Youth organization and waste banks. The results of the analysis indicate that operating agreements and revenue sharing based on a “win-win” solution including increasing human resources are an important basis for increasing institutional capacity.
Reproductive biology, growth and mortality of silver pomfret (Pampus argenteus) in Tarakan waters, North Kalimatan
Authors: Prihatiningsih  , Lestari P , Chodrijah U 
Published: October 2020

Abstract
Silver pomfret (Pampus argenteus) was a demersal fish of the family Stromateidae and high economical value. The fish was caught by the mini trawler. This research aims to study the reproductive biology, growth and mortality of silver pomfret in North Kalimantan. The research was conducted in January-November 2016 in Tarakan, North Kalimantan. The length of the silver pomfret was 9.5-32 cmFL, sex ratio between female and male was unbalanced (0,55:1). The peak of spawning season in January and august. The fecundity of silver pomfret ranges from 57,969 – 248,520 eggs and the spawning type was a multispawner. length weight relationship was negative allometric. Length at first captured (Lc) was smaller than length at first matured (Lm). The Von Bertalanffy’s growth equation was Lt = 36.6 (1-e 0.51 (t +-0.30274)). The natural mortality rate (M) of silver pomfret was smaller than fishing mortality rate (F).
A review on status of marine radioecology in Indonesia after Fukushima accident
Authors: Prihatiningsih W R , Suseno H , Makmur M , Yahya M N , Putra D I P , Priasetyono Y 
Published: October 2020

AbstractA brief overview of the current status of marine radioecology in Indonesia after the Fukushima accident is given. Indonesia waters as a part of a global oceanic current, taking an essential role in distributing radionuclide releases from the Fukushima accident. Recent years have seen significant work conducted on the radioactivity marine environmental monitoring on the seawater, sediment, and biota both in offshore and coastal of Indonesia marine area. This article mainly focuses on the radiocesium (137Cs and134Cs) as an essential conservative radionuclide released from the Fukushima accident. The distribution of anthropogenic radiocesium was comprehensively monitored from the West part Aceh to Papua in the East. Moreover, seawater masses bringing radiocesium at inflow and outflow of Indonesian Through Flow (ITF) was also observed. The activity ratios of134Cs/137Cs measured at several locations are evaluated to gain an insight of radiocesium origins. It is important to note that the137Cs radionuclides detected in the Indonesia marine area have been very low and comparable to other regional marine areas. On the other side,134Cs radionuclide has been not detected over the Indonesia marine area.
Brackish water pond management strategies based on salinity and pyrite distribution in the Mahakam Delta, East Kalimantan
Authors: Rizal S , Hutabarat J , Anggoro S , Prayitno S B 
Published: October 2020

Abstract
Brackish water ponds in the Mahakam delta are located in the area that has acidic soil and is affected by the distribution of salinity. This study aims to analyze brackish water pond management strategies based on salinity and pyrite distribution. The location of this research was in the local farmers’ brackish water ponds in the Mahakam delta, East Kalimantan. Sampling collection was carried out on several brackish water ponds with different salinity, namely salinity of 0 – 10 ppt, 11 – 20 ppt, and 21 – 30 ppt. Each type of salinity was represented by 10 brackish water ponds. Samples were selected using a purposive sampling technique in which respondents consisted of farmers, academics, and the government. Data were analyzed using the Analytic Hierarchy Process and qualitative descriptive methods. The results indicated that the alternative pond management strategies employed in the Mahakam delta were brackish water pond management with salinity and pyrite management approaches (0.312), brackish water pond management with pyrite management approach (0.222), and brackish water pond biophysical management (0.155).
Plastic pollution on the beaches of outer Ambon Bay
Authors: Tuahatu J W , Noya Y A , Manuputty G D 
Published: October 2020

Abstract
Plastic pollution in the marine environment is a global problem, which is currently in particular concern because this pollutant can be a negative impact on ecosystems. Identification of group plastic can be a solution to plastic debris management strategy throughout Outer Ambon Bay (OAB). The purpose of this study was to determine and analyze the composition and percentage of plastic debris in OAB and analyze the density of plastic debris in OAB according to the plastic group. The research findings from 20 sampling sites showed that the plastic debris category found was mostly plastic packaging, 86% on the coast of the Jasirah Leitimur and 78% on the Jasirah Leihitu. The highest density of plastic waste was found at Tantui and Mardika shores located in Jasirah Leitimur. The sampling site in Jasirah Leihitu shows that Rumahtiga and Liliboy have the highest density of plastic. Overall, the dominant group of plastic found on the shores of Outer Ambon Bay is plastic packaging.
Distribution map and first record of Nomorhamphus sp. (Beloniformes, Zenarchopteridae) in Southeastern Sulawesi, Indonesia
Authors: Oetama D , Lawelle S A , Mokodongan D F , Takwir A , Arsal L O M , Hasuba T F , Permatahati Y I 
Published: October 2020

Abstract
The purpose of this study were to know the distribution of Nomorhamphus genus in Southeastern Sulawesi and to examine the first record of Nomorhamphus sp. in Loea river east Kolaka Regency Southeast Sulawesi Indonesia. Nomorhamphus is as one of Sulawesi’s endemic fish. The distribution map of Nomorhamphus based on primary and secondary data. Both visualized using System Information Geography (SIG) through QGIS application. First record of Nomorhamphus sp. in Loea river describe by morphometric and meristic data. Nomorhamphus sp. catched by used a beach seine. Each individual caught was put into a plastic sample which was given formalin about 4%. This study recorded the fiftythree specimen consist of twentytwo males and thirtyone females. Several locations are known as the Nomorhamphus sp. habitat, namely Fotuno fountain, Moramo waterfall, Balano fountain, Laweau river, Moramo river, Anduna river and Asinua river. Furthermore, other Nomorhamphus found in Wawolambo river (N. lanceolatus) and Mangolo river (N. sagittarius). Several characters of male and female of present study including total length, standard length and head length about 30.0-87.7 mm, 24.2-70.5 mm and 7.3-30.7 mm, respectively. The meristic showed both males and females have relatively the same number of fin rays. The relationship between total length and body weight of male and female followed the equation W = 0.0385L1.1355 (r = 0.90664) and W = 0.0647L2.2221 (r = 0.87756), respectively.
Mangrove vegetation health index analysis by implementing NDVI (normalized difference vegetation index) classification method on sentinel-2 image data case study: Segara Anakan, Kabupaten Cilacap
Authors: Akbar M R , Arisanto P A A , Sukirno B A , Merdeka P H , Priadhi M M , Zallesa S 
Published: October 2020

Abstract
Segara Anakan, Cilacap District is an area that embodies the largest mangrove forest in Indonesia, namely 8,576.06 ha in 2016. The observation and mapping of vegetation index surrounding the forest are done by utilizing remote sensing to acquire satellite images. Plants have adequate reflectance to Near Infrared (NIR) lights. Normalized Vegetation Index (NDVI) is classified to have high accuracy in mapping mangrove in an area. The concept of NDVI is considerably simple, namely by observing the best NIR light reflected by the chlorophyll and red light radiation absorbed by green plants. Algorithm or equation used is (NIR - RED)/(NIR + RED). The results from the algorithm will then be used to derive index value ranging from -1 to 1. This index value will be employed as a parameter to indicate whether the mangroves are healthy or not. This study is done in 2020 incorporating data from 2017 to 2020 that are relevant to Segara Anakan, Cilacap District and implementing NDVI method to analyze the mangroves’ health. Results from the satellite images show that mangroves in Segara Anakan are experiencing a negative trend regarding their health from year to year. The result in 2017 shows a majority of 0.9 index with pixel vegetation frequency of 17,500 which drastically declined in 2020 to only 7,000 with majorities of 0,2;0,6;0,8 which is caused by deforestation and natural causes inhibiting the sowing and growth of mangroves.
Symmetry-protected dual quasi-bound states in the continuum with high tunability in metasurface
Authors: Wang Meng , Li Baoying , Wang Wudeng 
Published: October 2020

Abstract
We propose a split ring metasurface supporting simultaneously symmetry-protected dual bound states in the continuum (BIC) under normal excitation. Such two BICs can be classified as symmetry protected toroidal dipole (TD) BIC and magnetic dipole (MD) BIC, and the asymmetrically distributed holes can convert these two BICs into TD quasi-BIC and MD quasi-BIC with ultrahigh Q-factors, respectively. Two eigenmodes reveal the existence of symmetry protected BICs with an infinite lifetime and exhibit the intrinsic TD and MD characters by multipole analysis. In addition, it is shown that the two quasi-BICs can be switched on and off at orthogonal incident polarization orientations simultaneously. Further, such two quasi-BICs can be efficiently modulated by varying the Fermi energy of the graphene covered on the dielectric metasurface, indicating that the TD and MD quasi-BICs in the proposed metasurface have potential applications in designing novel quasi-BIC-based optical modulator and switching.
Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles
Authors: Bai Zhongchen , Wang Xueqin , Zhang Zhengping , Qin Shuijie 
Published: October 2020

Abstract
We studied an enhanced photoluminescence (PL) effect of CsPbBr3/Al2O3 heterojunction by using gold nanoparticls (NPs). The CsPbBr3/Al2O3 heterojunction and CsPbBr3/Au/Al2O3 heterojunction were respectively prepared on porous Al2O3 film by using a colloidal self-assembly method. The defect fluorescence of CsPbBr3/Al2O3 heterojunction was enhanced up to 40 times due to the transfer of photo-generated carriers from the CsPbBr3 quantum dots (QDs) to the porous Al2O3 film. To suppress the defect fluorescence of heterojunction, the CsPbBr3/Au/Al2O3 heterojunction was prepared by loading the gold NPs between the CsPbBr3 QDs film and the porous Al2O3 film. The results showed that the gold NPs facilitated the transfer of the photo-generated carriers from the CsPbBr3 QDs to the surface of porous Al2O3 film. Compared with the porous Al2O3 film and CsPbBr3/Al2O3 heterojunction, the peak fluorescence of CsPbBr3/Au/Al2O3 heterojunction was enhanced to 6.4 times and 2.8 times, respectively. This method of enhanced fluorescence of QD heterojunction provides a new pathway in the applications of photovoltaic, photodetector, LED, image sensor, photocatalysis.
RETRACTED: The application of hierarchy MoS2 particles for NIR induced drug delivery towards liver cancer treatment
Authors: Wang Kai , Li Chengfang , Li Yin , Wang Jinjing , Ma Aiqing 
Published: October 2020

Abstract
This paper applied hierarchy MoS2 particles for near-infrared induced drug delivery towards liver cancer treatment. MoS2 particles were used as the photothermal responsive agent, 1-tetradecanol was used as the phase change material, doxorubicin was encapsulated into the particles, and MoS2/1-tetradecanol@doxorubicin composite was synthesized. The drug release was tested under near-infrared irradiation. Within the MoS2/1-tetradecanol@doxorubicin composite, the photothermal response of MoS2 to near-infrared facilitated the phase change of 1-tetradecanol and the release of doxorubicin. The release of doxorubicin could be regulated by both the MoS2 concentration and the irradiation power. The cytotoxicity study indicated that MoS2/1-tetradecanol had negligible toxicity to the HepG2 cells, while MoS2/1-tetradecanol@doxorubicin had more tumor-killing effects than free doxorubicin. This research showed that hierarchy MoS2 particles had the potential of delivering anti-tumor drugs through photothermal stimuli.
Simulation as a Tool for Teaching and Learning Epidemiologic Methods
Authors: Rudolph Jacqueline E , Fox Matthew P , Naimi Ashley I 
Published: October 2020

Abstract
In aspiring to be discerning epidemiologists, we must learn to think critically about the fundamental concepts in our field and be able to understand and apply many of the novel methods being developed today. We must also find effective ways to teach both basic and advanced topics in epidemiology to graduate students, in a manner that goes beyond simple provision of knowledge. Here, we argue that simulation is one critical tool that can be used to help meet these goals, by providing examples of how simulation can be used to address 2 common misconceptions in epidemiology. First, we show how simulation can be used to explore nondifferential exposure misclassification. Second, we show how an instructor could use simulation to provide greater clarity on the correct definition of the P value. Through these 2 examples, we highlight how simulation can be used to both clearly and concretely demonstrate theoretical concepts, as well as to test and experiment with ideas, theories, and methods in a controlled environment. Simulation is therefore useful not only in the classroom but also as a skill for independent self-learning.