bluuebunny/crossref_metadata_2025_split huggingface dataset:
The impact of Motor Tanker (MT) Alex grounding on a patch reef ‘Gosong Panjang’ in the Manggar waters, Bangka-Belitung Province
Authors: Idris  , Fakhrurrozi  , Daud J R P , Sianipar O 
Published: January 2022

Abstract
The ship’s ran aground on coral reefs often result in severe physical and biological damage. It is including the removal and crushing of corals reefs (dislodging), the destruction of coral skeletons (pulverization), the erosion and removal of sedimentary calcium carbonate. It is almost cause the loss of three-dimensional complexity. Moreover, this event occurred in the patch reef was far away from the nearest land, located in the waters of Manggar-Bangka-Belitung Province with a distance of ± 65 nautical miles from the city of Manggar. The ship ground has caused damage to the marine environment especially the patch reef ‘Gosong Panjang’ at the location. The Fishbone method with the transect gauge is used to measure the extent of the affected area in each zone and underwater photo transect to measure the level of coral reef damage. Total extent of the affected area of each zone taking into account the survival of corals i.e., 10.177 square meter. Hard coral cover condition in the affected area of 7.7% goes to serious damage or poor. Hard coral species was affected in location where 43 species and 21 species are listed as red IUCN (International Union for Conservation of Nature) with vulnerable status and near threatened.
Assessment of the skin photoprotective capacities from coastal plant of Melaleuca cajuputi essential oil as a potential UV filters
Authors: Rozaini M Z H , Osman M U , Razali M H , Aziz M F A , Azhar M S 
Published: January 2022

Abstract
UV irradiation can cause cutaneous damage that may be specific according to the wavelength of UV rays. For example, damage from UVB irradiation manifests itself in the form of sunburn cells and enhancement of the expression of p53, while damage from UVA exposure results in an increase in the expression of vimentin. These reactions to UV irradiation were used in this work to evaluate the photoprotective capacities of two sunblock preparations that were applied to the surface of the skin. One sunblock preparation is a UVB absorber containing the coastal plant of Melaleuca cajuputi essential oil and titanium oxide (TiO2) exclusively. The other sunblock preparation is a conventional sunblock containing oxybenzone as comparison. Result obtained for UV-Vis test was observed that the new formulation derived showed good absorption and exhibit high potential to be further develop as sunscreen in cosmeceutical applications
Antioxidant, anti-inflammatory and anticoagulant activities of sulfate polysaccharide isolate from brown alga Sargassum policystum
Authors: Manggau M , Kasim S , Fitri N , Aulia N S , Agustiani A N , Raihan M , Nurdin W B 
Published: January 2022

Abstract
This study investigated the effect of sulphate polysaccharide isolate obtained from brown algae Sargassum polycistum on their biological activities. The antioxidant activity using FRAP (Ferric Reducing Antioxidant Power) method showed an IC50 value of 91.306 ppm compared to vitamin C as a positive control, with an IC50 value of 4,1667 ppm sulphate polysaccharide isolate showing intense antioxidant activity. In vivo anti-inflammatory activity of sulphate polysaccharide isolate from the brown algae has been done using CFA (Completed Freund’s Adjuvant). This study used 25 mice divided into five groups, namely the positive control group, negative control, the sulphate polysaccharide isolate compounds (doses of 10, 50, and 250 mg/kg). The results showed that the sulphate polysaccharide isolate had an anti-inflammatory effect that was not signed with positive controls but it was significantly different from negative controls. In anticoagulant activity, 25 mice were divided into five treatment groups: negative control, positive control, sulphate polysaccharide isolate sample with the dosage of 25, 50 and 100 mg/kg. The results showed that the sulphate polysaccharide isolate dosage of 100 mg/kg has anticoagulant activity. It can be concluded that sulphate polysaccharide isolates isolate has the potency to prevent and treat cardiovascular disease.
Seagrass, dugong, and people: Lessons learned from community-based conservation in Tolitoli Regency, Sulawesi Tengah, Indonesia
Authors: Amany C , Kamal M M , Kurniawan F , Sabila V 
Published: January 2022

Abstract
Dugong (Dugong dugon) is a protected mammal in Indonesia. Hunting for dugongs is still very high, so that the status of this animal is threatened, one of which is in Tolitoli Regency, Central Sulawesi. Hence, conservation efforts need to be carried out, both species and habitat area. Based on observation and interviews, dugong conservation in Tolitoli Regency was community-based habitat management. Kelompok Masyarakat Pengawas or Monitoring Community Group (Pokmaswas) was a form of community-based management in charge of maintaining, protecting, and preserving the existence of dugong and seagrass protection. From a community perspective, significant indicators in the management of dugong habitats were community awareness, seagrass percentage, and management quality. There was 11 kind of seagrass species have been identified in Tolitoli Regency. Seagrass conditions in all three villages were characterized by less than 60% of seagrass cover, especially seagrass that was close to the shoreline. The appearance of dugongs is based not only on good seagrass conditions but also on sea conditions and ship traffic.
Microplastics in fishes as seabird preys in Jakarta Bay Area
Authors: Susanti N K Y , Mardiastuti A , Hariyadi S 
Published: January 2022

Abstract
There has been some growing research on plastics in fishes as human food in Indonesia, but none linked to fishes as seabirds’ prey. The objective of this research was to reveal whether there were microplastics in fishes as prey of little-black cormorant. The study site was the coastal area of Pulau Rambut Wildlife Sanctuary in Jakarta Bay, where the cormorants search for fish food. Fish samples (12-16.8 cm, 5 species; n=8) were collected by using fish-rod, at the usual fishing area of cormorants along the southern coast of the reserve. Gastrointestinal tracts of the samples were observed to find macro, meso and microplastic. After NaCl dilution, followed by observation using SRCC and microscope (10×10 magnification), followed by grouping based on type, color, and size. No macro or mesoplastic found. Total of 110 microplastics particles were found from all samples (range 7-26 particles/fish), with Lutjanus vitta having the highest number (15-26 particles/fish). Film (2-21 particles/fish) and fiber (1-10 particles/fish) were found, but no fragment. Transparent microplastics were found the most (57.3%), followed by blue (26.4%), black (10.0%), and red (6.4%). The size of the microplastic found were mostly (64.5%) between 100-1.000μm. A more intensive research is needed, as these sampled fishes might also consumed by human.
Detection of native peptides from Channa striata extract using de novo sequencing
Authors: Chasanah E , Martosuyono P , Budiari S , Kurnianto M A 
Published: January 2022

Abstract

Channa striata or Snakehead fish is well-known as medicinal fish in Asian countries, including Indonesia. It is rich in functional amino acid as well as high protein. Previous study showed the fish extract was active as an ACE inhibitor in vitro, in which 5-10 kDa fraction of 50% ethanol extract has the potential ACE inhibitory activity (4,76% inhibition of ACE g-1 protein). This study aims to identify the native peptide in the Channa striata extract using LS-MS/MS. The 5-10 kDa extract fraction was further purified using Sephadex G-50, the significant peak fraction was treated with trypsin and untreated before being analysed using LC-MS/MS. The result showed that the untreated fraction had better result than trypsin treated one, indicating the significant peak fraction contains native peptide. We identified the presence of a 25.8 kDa β-actin fragment using the Channa striata database and two peptides GQVITIGNER and VITIGNER that meet the requirement software Proteome Discoverer 2.1. De Novo sequencing resulted 319 peptides with ALC >70%. Bioinformatics study revealed that the native peptide resulting from de novo sequencing was rich in inhibitor ACE peptides. These concluded that Channa striata contain a native peptide that is potentially an ACE inhibitor or anti-hypertension.
Proximate and nutrition analysis of chocolate bar with addition of mangrove leaves powder during the shelf life
Authors: Sumartini  , Ratrinia P W , Sitorus K H 
Published: January 2022

AbstractExploration of the potential of mangrove leaves as an additive in food products has been widely carried out. Mangrove leaves contain primary and secondary metabolites that can be used to increase the nutritional value of food products, one of which is chocolate. The purpose of this part is must be done to increase the economic value of local chocolate during storage. This research aims to determine the nutritional characteristic of diversification chocolate by adding mangrove leaves powderAvicennia officinalis(AO),A. marina(AM), andRhizophora apiculata(RA) extract as a natural agent that can increase the shelf-life of the product. Chocolate is made with four different varieties of mangrove leaves powder addition (AM, AO, RA, and CO) and storage for 14 days at ambient temperature. This research method is an experimental laboratory with a randomized block design. Based on the results of this study, the addition ofAvicennia marinamangrove leaf powder was able to inhibit the decrease in the ash content of chocolate bars during 14 days of storage. In addition, the addition ofA. officinalisleaf powder can suppress the decrease in water content and protein content. While the decrease in carbohydrate levels during storage in chocolate bars can be inhibited by the application ofR. apiculatamangrove leaf powder.
Microplastic contamination extent on Strombus sp. in North Bintan Waters
Authors: Kafabihi  , Idris F , Putra R D , Nugraha A H , Apriadi T , Syakti A D 
Published: January 2022

Abstract
Microplastics, which are crumbled plastic waste measuring less than 5 mm, are known to have contaminated the conch snail species Strombus sp. and sediments in the waters of North Bintan. This study aims to provide a basic report on the number of stranded plastic crumbs (micro) and the contamination level in conch Snails (Strombus sp.) In North Bintan waters. The methods used in this research are survey and quantitative methods. Determination of the location point by purposive sampling. The procedure is divided into two stages: quadrant sampling in the field and analysis of microplastic particles in the laboratory with H2O2 liquid as an oxidizing agent and ZnCl2 solution as a microplastic determinant with a floating system. 16.4 ± 31.6 particles/individuals. Meanwhile, the level of contamination that occurs in Strombus sp. experienced in Pengudang Village by 88%, which means that on average each individual at the Pengudang station has the potential to be contaminated with 22 microplastic particles. The high level of contamination is a threat to the safety of seafood because there is the contamination of microplastic particle pollutants in one of the marine biota consumed by Strombus sp.
The impact of Manta Mae Phinisi ship grounding at Gili Lawa Darat Marine National Park of Komodo, West Manggarai, East Nusa Tenggara
Authors: Johan O , Idris  , Fakhrurrozi  , Sianipar O 
Published: January 2022

Abstract
Coral reefs are distributed widely around Indonesia waters which has various functions as fisheries sources and tourism benefits. Coral reefs are very vulnerable to various threats, such as ship grounding in several areas in Indonesia. The measurement of damage width of coral reefs used the irregular polygon method. In contrast, the impact and the level of damage were measured using the underwater photo transect (UPT) method. The grounding of the ship has caused massive damage to coral reefs with a width area of 46.89 m2. Types of damage include physical and biological damages that make the coral split, break, and shift. The ship grounding caused the coral colonies to be uprooted and blown from the substrate, destroying coral skeletons, lifting, and sediment displacement. Coral condition at the control area was 35.13% (bad condition), whereas condition on the damaged area as the impact of ship grounding was 14% in trajectory zone. The total width to be claimed was 11.92 m2. The degradation of coral reefs can affect and reduce the functions and benefits of ecosystems both ecologically and economically. The shipowner has to do the rehabilitation and compensation of the damaged area.
Small island development based on the capture and mariculture feasibility at three islands in Kepulauan Seribu
Authors: Putri M K , Yonvitner  , Imran Z 
Published: January 2022

Abstract
Kepulauan Seribu consists of small islands that have enormous fishery potential that can be a fisheries investment. The existence of investment in fisheries business by considering the carrying capacity is expected to ensure the results of capture fisheries or mariculture production from fishery businesses, which can affect the needs of the Kepulauan Seribu citizen. The purpose of this study is to analyse the carrying capacity of fishery business investment in Kepulauan Seribu with a business feasibility method approach so that it can be carried out sustainably. The research method was built by survey and observation with a feasibility study and multi-criteria analysis. The main potential of capture fisheries in Harapan Island, Kelapa Island, and Kelapa Dua Island are tuna, yellowtail fish, and squid, while mariculture product is grouper. Capture fishery or mariculture activity at the research location has met the investment criteria to be feasible. Capture fishery and mariculture activity in Kelapa and Harapan Islands have the better carrying capacity for investment based on ecological, economic, and social aspects. Therefore, the development of Kepulauan Seribu must be carried out based on the feasibility of development and investment by considering the community’s ecological, economic, and social aspects.
Nutritional composition and mineral analysis of the by-products from tropical marine fish, purple-spotted bigeye (Priacanthus tayenus Richardson, 1846) and barracuda (Sphyraena obtusata Cuvier, 1829)
Authors: Jaziri A A , Hasanuddin H , Shapawi R , Mokhtar R A M , Noordin W N M , Huda N 
Published: January 2022

AbstractThe aim of this study is to evaluate the nutritional composition, macro- and micro-elements from purple-spotted bigeye (Priacanthus tayenus) and barracuda (Sphyraena obtusata) by product which are extensively used for surimi. The proximate composition showed significant differences (p < 0.05) for all parameters. The moisture, protein, fat, ash and carbohydrate contents of purple-spotted bigeye sample ranged from 56.22-79.26%, 12.46-31.14%, 0.24-1.29%, 1.27-22.86% and 0.42-0.98%, respectively. Meanwhile, barracuda recorded 55.76-79.86% moisture, 18.46-27.29% protein, fat 0.05-2.55% fat, 1.22-24.36% ash and 0.41-0.88% carbohydrate contents. For macro-elements analysis, both fish species contained high concentration of calcium, especially in fins, bone and skin. For other macro-elements, all samples recorded lower than 4.5 mg/g. Although the concentration of micro-element zinc and copper were dominant in all samples examined, their levels were still below the permissible limits recommended by the Food and Agriculture Organization/World Health Organization (FAO/WHO) and the Malaysian Food Regulations (MFR). More importantly, chromium, cadmium and lead were far below the toxic levels regulated by the FAO/WHO and the MFR. Thus, the by-products used may be applied for potential food ingredients and for baseline information in the further experimentation.
Engaging multi-stakeholders’ strategy toward strengthened mangrove rehabilitation program in Tangerang Regency
Authors: Mahardika S M A H , Yulianda F , Sulistiono  , Adrianto L , Amin M A Al 
Published: January 2022

Abstract
The Tangerang’s coastal area faces (1) decreasing environmental quality, and (2) poverty. The government developed Gerbang Mapan Program, an integrated coastal management (ICM) program designed to accelerate the recovery of coastal ecosystems and community development. To encourage the acceleration of the program, the government invites various parties (multistakeholders) to be involved in the program. This study aims to explore the processes of involving multistakeholders in the success of the mangrove rehabilitation, which has now succeeded transforms from damage to be good and have even become centers of community socio-economic activities. The method is an explorative method with a coevolutive dynamic historical process approach from 2014 to 2020. The involvement of various parties i.e local government agencies/institutions in Tangerang Regency, the private sector, TNI/Polri, schools, universities, and coastal community groups in mangrove rehabilitation programs and awareness campaigns and public education have encouraged the acceleration of mangrove rehabilitation, where by 2020, rehabilitation has been carried out with planted 720,000 mangrove trees, with six species (Rhizophora sp, Avicennia sp, Bruguiera cylindrica, Bruguiera gymnoriza, Ceriop tagal and Sonneratia alba), where the survival rate reached 69.22%, with the most adaptive type Avicennia sp planted in Tangerang Regency with a survival rate of 90.71%.
A new near-infrared fluorescent probe for sensing extreme acidity and bioimaging in lysosome
Authors: Liu Qiuchen , Liu Chang , Cai Songtao , He Song , Zhao Liancheng , Zeng Xianshun , Zhou Jin , Gong Jin 
Published: January 2022

Abstract
Since the intracellular pH plays an important role in the physiological and pathological processes, however, the probes that can be used for monitoring pH fluctuation under extreme acidic conditions are currently rare, so it is necessary to construct fluorescent probes for sensing pH less than 4. In this work, we developed a new near-infrared (NIR) fluorescent probe Cy-SNN for sensing pH fluctuation under extremely acidic conditions. For the preparation of this probe, benzothiozolium moiety was chosen as lysosomal targeting unit and NIR fluorophore, and barbituric acid moiety was fused in the polymethine chain of probe to introduce protonation center. Surprisingly, on the basis of the balance of quaternary ammonium salts and free amines, the pka value of Cy-SNN was calculated as low as 2.96, implying that Cy-SNN can be used in acidic conditions with pH < 4. Moreover, Cy-SNN exhibited highly selective response to H+ over diverse analytes in real-time with dependable reversibility. Importantly, Cy-SNN can be used to specifically target lysosome, providing potential tools for monitoring the function of lysosome in autophagy process.
Creating custom-designed patterns of nanoscale graphene quantum dots
Authors: Yang Qian , Zhang Yu , Fu Zhong-Qiu , Chen Yulong , Di Zengfeng , He Lin 
Published: January 2022

Abstract
Graphene quantum dots (GQDs) have attracted extensive attention over the years because of their importance both in fundamental science and potential applications. However, fabricating patterns of the GQDs is still of great challenge in experiment. Here, we demonstrate a technique to create patterned nanometer-sized GQDs with nanoscale precision in their sites. By applying a voltage pulse from a scanning tunneling microscopy (STM) tip, we successfully create stationary nanoscale circular p–n junctions, i.e. GQDs, in a continuous graphene sheet on hydrogen terminated germanium (110) surface. With accurately tuning the coordinates of the STM tip, the designed patterns of the GQDs are successfully generated. Spatial-resolved measurements indicate that the patterns of the GQDs strongly affect the local electronic properties and two-dimensional distributions of local density of states in graphene.
Preparation and characterization of Portland cement clinker from sulfuric acid leaching residue of coal fly ash
Authors: Zhao Aichun , Liu Yujin , Zhang Ting-an , He Xin , Ye Xin , Zeng Miao 
Published: January 2022

Abstract
This work reported a process for the preparation of Portland cement clinker from sulfuric acid leaching residue of coal fly ash. Aluminum and iron in fly ash were effectively leached by sulfuric acid leaching, and the silica was all concentrated in the acid leaching residue. The chemical analysis showed that the content of SiO2 in the leaching residue was 79.1% and the leaching residue contained a small amount of Al2O3, CaO and Fe2O3, which could replace clay as the raw material for the preparation of Portland cement clinker. The effects of main process conditions on the quality of prepared cement clinker were studied. The results showed that the burnability of the raw material with clinker rate value KH = 0.92, SM = 2.1, IM = 1.2 and leaching residue content of 26.98% was excellent and good. The mineralogical analysis and microscopic examination showed that the good quality clinker was obtained under the conditions of sintering temperature of 1450 °C and holding time of 60 min, and the tricalcium silicate phase was well developed. Based on this study, acid leaching residue of coal fly ash was viable as an effective, alternative raw material in Portland cement production.
The influence of carbon potential after gas-carbonitriding on the microstructure and fatigue behavior of low alloyed steel
Authors: Ghanem Abdelkarim , Terres Mohamedali 
Published: January 2022

Abstract
In this paper, the effects of gas-carbonitriding time on fatigue limit improvement of low alloy steel specimens were investigated by experimental tests of three points fatigue flexion. Besides, metallurgical evaluations and micro-Vickers hardness tests were performed employing metallographic techniques, optical, scanning electron microscopy and x-ray diffraction techniques. Test findings showed that this amount remarkably improved the components fatigue resistance. The fatigue life of carbonitrided specimens was prolonged between 16%, for CN11 (i.e. austenization-870°/7 h, atmosphere with 1% carbon potential, quenching-oil medium and tempering-200 °C/1 h), and 32%, for CN21(i.e. austenization-870°/8 h, atmosphere with 1, 2% carbon potential, quenching-oil medium and tempering-200 °C/1 h), compared to the untreated state. It is obvious, from the fractography analysis, utilizing (SEM), that fatigue cracks appeared first at the carbonitrided specimens surface.
The effect of surface morphology on the peel performance of UV-induced adhesion-reducing adhesives
Authors: Wu Xing , Ren Fengmei , Ma Haihong , Zhou Zhengfa , Xu Weibing 
Published: January 2022

Abstract
In this paper, end-hydroxy fumaryl chloride-diol copolyesters (EHFDCP) with different double bond contents were prepared by the reaction of fumaryl chloride and diols. The molecular weight of the target hydroxy polyesters was controlled to be essentially the same, EHFDCP prepared from 1,8-octanediol, 1,5-pentanediol and ethylene glycol named EHFDCP-1, EHFDCP-2 and EHFDCP-3, respectively. The UV-induced adhesion-reducing adhesives (ARA) were prepared with EHFDCP, isophorone diisocyanate (IPDI), chain extender and photoinitiator. The ARA-1, ARA-2 and ARA-3 were produced by EHFDCP-1, EHFDCP-2 and EHFDCP-3, respectively. After UV curing, all the surfaces of ARA-1, ARA-2, and ARA-3 had a high number of concave and convex areas, which helped to reduce the contact area between the adhesive and the substrate surface. The surface roughness of ARA-2 is the highest and the adhesion reduction effect is the most significant. The higher surface roughness of ARA-2 came from moderate double bond content and crosslinking density. With the increasing photoinitiator content, the 180° peel strength after UV curing decreased. The 180° peel strength of ARA-2 was reduced to 0.16 N/25 mm at 4 wt% of photoinitiator content, and it also had a high initial 180° peel strength of 18.55 N/25 mm due to the absence of small molecule polyfunctional monomers.