bluuebunny/crossref_metadata_2025_split huggingface dataset:
The nexus between stakeholders’ role, eco-empowerment, and community perceptions on mangrove ecosystem management’s sustainability
Authors: Suswadi  , Irawan N C , Esthi R B , Novitasari S 
Published: November 2023

Abstract
Managing coastal ecosystem resources and mangrove forests in Sayung District, Demak Regency faces many challenges if it does not involve the community’s active role and stakeholders. Ecological empowerment faces the abrasion, erosion, and sedimentation of coastal areas that mangrove stands have not covered. On the other hand, the revitalization and rehabilitation program is still not optimal, so it requires the participation of many institutions, not only from the government but also from non-government, so that all management programs run in tandem are integrated and is following regulations. This study aims to determine the relationship between the role of stakeholders, eco-empowerment, and community perceptions of the sustainability of mangrove ecosystem management. The location selection used the purposive method. While the sample selection used the purposive and snowball random sampling methods. Data analysis used the partial least square method. The study’s results indicate that the stakeholders’ role has a direct positive and significant impact on eco-empowerment and perceptions of sustainability. Eco-empowerment has a direct positive and significant effect on the perception of sustainability. The role of stakeholders has a positive and indirect influence on the perception of sustainability through eco-empowerment activities.
Spatial and temporal distribution of dissolved oxygen in the Ciliwung River, DKI Jakarta Province
Authors: Aprilia M , Effendi H , Hariyadi S 
Published: November 2023

Abstract
The Ciliwung River is one of the main streams that pass Jakarta. This river flows through the city’s center and passes many villages, highly inhabited homes, and slums, necessitating special attention to the Ciliwung River’s water quality. Because dissolved oxygen is essential for aquatic life, it is the most critical measure of freshwater quality. This study aimed to analyze the spatial and temporal distribution of dissolved oxygen in the Ciliwung River in DKI Jakarta Province. Water quality was monitored during the rainy (February and June 2021) and the dry seasons (August and September 2021). The study area comprised 18 observation sites along the Ciliwung River in DKI Jakarta. Spatially, in Central and North Jakarta, the dissolved oxygen content of the Ciliwung River is relatively low. Temporarily, the dissolved oxygen concentration was somewhat more significant during the rainy season, but statistical testing revealed no statistically significant difference between the rainy and dry seasons.
Effect of rainfall on water condition and catch results of eel (Anguilla spp.) in Cicatih River, Sukabumi, West Java
Authors: Nugraha R P , Wildan D M , Rahmadya A , Setiawan F , Ridwansyah I 
Published: November 2023

AbstractIndonesia is one of the countries with the largest eel catches in the world and is very vulnerable to climate change, especially with rainfall. Rainfall affects fishing activities and the surrounding aquatic environment. Fish resources in the Cicatih River are quite diverse, one of which is high economic fish, namely eel. This study aims to provide information about rainfall’s effect on eel catch results in Cicatih Rives, Sukabumi Regency. Sampling was conducted for six months, from August 2021 to January 2022. The method I use in this research is water condition and relationship analysis for water quality using APHA 2017 and analysis of the relationship between rainfall and fish catches. The result shows that the water quality of the Cicatih River is still in the optimal range for eel life. Still, there are water chemistry parameters that exceed the quality standard, and total nitrogen levels exceed 10mg/l. Most of the large eels in the Cicatih River were caught in the rainy season. Rainfall also affects the duration when fishing, and it is negatively correlated. High rainfall affects the time of fishing, which in turn affects the number of eel catches.
The decent catch size of mackerel tuna (Euthynnus affinis Cantor, 1849) and its implication to fisheries management in the border area of Indonesia and Timor Leste
Authors: Rehatta B M , Ninef J S R , Ginzel F I 
Published: November 2023

Abstract
A study of mackerel tuna (Euthynnus affinis) has been conducted in Ombai Strait in the border area of Indonesia and Timor Leste. The objective of this study is to determine the decent catch size of mackerel tuna in Ombai Strait, based on the length at first caught (Lc), the length of first mature (Lm), and prediction of spawning season. Monthly data collection conducted in May 2018 – June 2019 from fish landing sites in Belu, East Nusa Tenggara, Indonesia. There were 1516 fish collected to measure the total length and gonadal maturity level. The results showed that the size of the mackerel tuna population in the Ombai Strait was between 131 - 450 mmTL. The length at first matured is 210,9 mmTL and the average length at first caught (Lc50) is 152,1 mmTL. Length of first matured was larger than length at first caught (Lm > Lc). The decent catch size is 211 mmTL and the prediction of spawning season in May – June. These results indicate that it is necessary to regulate selective fishing gears to ensure the sustainability of mackerel tuna resources in Ombai Strait.
Effectiveness of ICM system and its contribution to local capacity development: Case study in West Papua Province
Authors: Isdahartati  , Damar A , Solihin A , Kurniawan F , Yonvitner  , Amin M A Al 
Published: November 2023

Abstract
Integration and coordination of various coastal and marine management efforts is the major objective of the integrated coastal management (ICM) approach. In the implementation of the Raja Ampat’s COREMAP CTI activities, PKSPL IPB University replicates ICM practices, in Yensawai Village, Raja Ampat Regency. Those include cycle guidelines, structures, and models of ICM implementation at the local government level. The ICM cycle is very important because it provides a gradual and non-negotiable “must” to be able to proceed to the next several steps. The cycle must be done correctly to contribute to continuous improvement. The goal is to have a functioning ICM system to improve local government services and contribute to sustainable development. PKSPL IPB University has successfully demonstrated its effectiveness and impact on the implementation of the ICM program. This can be seen in the increasing adoption of the concept of sustainability in local governments as well as increasing local political commitment to the rehabilitation of sustainable coastal ecosystems in West Yensawai Village, Raja Ampat Regency. The experience of PKSPL IPB University in other ICM pilot sites in implementing ICM integration was replicated in the COREMAP CTI program in West Papua Province. Contribution factors adopted by ICM in local capacity building include: (i) local government involvement; (ii) the leadership role of the coordination mechanism; (iii) key steps of the ICM Cycle process; (iv) vision-led programs; (v) local champions; (vi) visible achievements and impacts; (vii) increased value of integrated planning and management approaches, and local and political commitments.
Significant metal buildup within the organs of Lethrinus sp. and Caranx ignobilis (Forsskål 1775) from Kao Bay waters, Indonesia
Authors: Pertiwi R T A , Ariyanto D , Edward  , Lessy M R , Putri B 
Published: November 2023

Abstract
Fish organs can contain heavy metals. This study’s objective was to map the distribution of heavy metals in several fish organs.. The research was conducted in Kao Bay waters from April to September 2019. The samples obtained were prepared at the aquatic science laboratory of Khairun University and were analyzed at the Environmental Productivity Laboratory of IPB University Bogor using the AAS instrument to determine heavy metals. The heavy metals accumulation in Lethrinus sp fish meat was Zn > Cu > Mn > Pb > Ni > Hg > Cd, and in gill was Zn > Pb > Mn > Ni > Hg > Cd. The accumulation of heavy metals in Caranx ignobilis fish meat was Zn > Pb > Mn > Cu > Ni > Hg > Cd, whereas the accumulation in the gills was Zn > Pb > Ni > Mn > Cd > Hg > Cu. Zn accumulation was the highest heavy metal discovered in fish as a result.
Ammonium removal characteristics of facultative heterotrophic nitrifying bacteria isolated from shortfin eel (Anguilla bicolor) recirculation aquaculture system
Authors: Afnur E S , Istiqomah I , Isnansetyo A , Murwantoko  , Sukardi  
Published: November 2023

Abstract
Nitrifying bacteria play a role in reducing the amount of toxic ammonia in the rearing media. The purpose of this study was to characterize, and identify nitrifying bacteria isolated from shortfin eel (Anguilla bicolor) recirculation aquaculture system. The selective anorganic nitrifying medium was used to isolate the bacteria, followed by cultivation of the bacterium in the organic medium (Triptone Soya Agar). Bacterial characterization was carried out for nine days using a nitrification activity test. A safety test was conducted by intraperitoneal injection of bacteria in healthy eels (Anguilla bicolor). Phenotypic characterizations and analysis of the 16S rRNA and DNA gyrB genes were used to identify the bacteria. This study resulted in the successful isolation of five isolates. The three isolates (ENS2, ENS4, and ENS5) were non-pathogenic and exhibited high nitrifying activities. The isolates reduced 40-50% of ammonia concentration in three days, resulting in a 2-5 mg/L of nitrate concentration in the medium. The 16S rRNA and gyrase B genes sequences of ENS5 were close to Klebsiella quasipneumoniae, but with the low similarity (97.9% and 99.3%, respectively). It is concluded that recirculation aquaculture system of shortfin eel (Anguilla bicolor) harbor of facultative heterotrophic nitrifying bacteria has potential for further application in shortfin eel aquaculture waste treatment facilities.
The mapping of the vulnerability coastal area in Pangandaran District by the coastal vulnerability index (CVI) approach
Authors: Maudhi RC , Arhatin R E , Gaol J L 
Published: November 2023

Abstract
The phenomenon of sea level rise (SLR) in Pangandaran Regency threatens the continuity of human activities such as tourism, fisheries and trade that gives value to coastal regions. The southern coast of Java directly faces the Indian Ocean and sea levels are expected to rise by 2 – 4 mm/year, leaving the Pangandaran Regency relatively vulnerable to SLR. Coastal vulnerability can be mapped using the Coastal Vulnerability Index method to determine levels of vulnerability based on six parameters which are geomorphology, elevation, tidal range, significant wave height (SWH), shoreline change and rate of SLR. The results show that the geomorphology of Pangandaran Regency is considered to be very vulnerable (Score 5) due to the number of sandy beaches present. Elevation is dominated by the vulnerable category (Score 4). Tidal range of the coastal region is considered moderately vulnerable (Score 3). SWH of the coastal region is very vulnerable (Score 5). Shoreline change is considered to be moderately vulnerable (Score 3) with overall erosion in the region. Rate of SLR is considered to be very vulnerable (Score 5). The coastal region Pangandaran Regency is leaning towards being vulnerable against sea level rise.
LCM of thermoset-based fiber reinforced composites for large-scale applications: are process kinetics and structural properties antagonistic?
Authors: Michaud Véronique 
Published: November 2023

Abstract
This article reviews the main methods to manufacture large-scale composite parts, with a focus on Liquid Composite Molding techniques of thermoset-based fiber reinforced structural parts. As this process relies on the impregnation of a dry textile stack, this manufacturing step is crucial in terms of part production rate, and part quality. To increase the process kinetics, a large effort has been devoted to increase the permeability of the textile preforms, while keeping a similar fiber content. An increase of almost two orders of magnitude can be attained if the textile shows a strong separation of scales between densely packed tows and large intra-two spaces. This however leads to a potential degradation in the resulting structural properties, particularly in dynamic mode due to the presence of the resin rich pockets. Alternative solutions emerge, which may help reach a cost-effective compromise.
Challenges in permeability characterisation for modelling the manufacture of wind turbine blades
Authors: Pierce Robert S. 
Published: November 2023

Abstract
As wind turbine blades continue to increase in size, and market competition grows, lean manufacturing has become even more important for OEMs. The rapid development of new blade designs, with greater performance, and reduced production waste are driving the need for predictive modelling of the blade infusion process. Such simulations are reliant upon Darcy’s Law for the description of fluid flow through porous materials and therefore depend greatly on the permeability properties of the blade preform materials. The characterisation of fabric permeability, although unstandardised, has been well studied in recent years as the focus of numerous international benchmarking efforts. However, the effective permeability properties of infusion consumables, core materials, and pre-cast elements are not so well defined or validated, despite their significance on infusion behaviour. Hence, the great variety of preform materials, stacking configurations, geometric features, and transition regions in wind turbine blades present considerable challenges in terms of permeability characterisation and subsequent modelling. This article reviews some of the challenges, opportunities, and alternatives for characterising permeability in common blade preform materials, along with examples of how these properties have been applied in numerical models to better simulate the resin infusion manufacturing process for wind turbine blades.
Defect detection in carbon fiber-reinforced composites using directional dark-field imaging and tomography
Authors: Slyamov Azat , Roosmalen Adriaan van , Pedersen Mads A. , Nielsen Kenneth K. , Ferguson Ole V. , Mikkelsen Lars P. , Lauridsen Erik 
Published: November 2023

Abstract
This paper proposes the use of circular X-ray grating interferometry as an effective technique for defect detection with potential applications for in-line inspection of carbon fiber-reinforced pultruded profiles used inside the load-carrying spar caps of wind turbine blades. A fuzzball defect in the pultruded profile is characterized as a demonstration. The method allows for large field-of-view quantification of local fiber alignment and relative fiber volume fraction. A two-dimensional through the thickness averaged distribution of the fiber orientation, the mean scattering, and fractional anisotropy are determined. Based on this, it is possible to determine the size of the defect as well as quantify the severity of the defect.
Effect of span/thickness ratio on fatigue properties of thick quasi-isotropic CFRP laminates subjected to three-point bending loading
Authors: Otsubo M , Hosoi A , Sakurai T , Yamatogi T , Kawada H 
Published: November 2023

Abstract
In this study, three-point bending fatigue tests were conducted to investigate damage growth behavior of thick quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates. The span/thickness ratio L/h was varied for both static tests and fatigue tests to determine failure mechanisms. In the static tests, the failure mode changed from delamination to compressive buckling as span/thickness ratio increases. The apparent interlaminar shear strength was higher for the specimens with lower span/thickness ratios, and the shear failure was likely to be caused by oblique crack in 90° plies. In the fatigue tests, the specimens with span/thickness ratio L/h=7 caused delamination regardless of stress level. For the specimens with span/thickness ratio L/h =15, three types of failure modes were obtained depending on stress level; delamination near the neutral plane, buckling at compressive area and matrix crack at tensile area. During the fatigue tests, stiffness of specimens with different span/thickness ratios which fail in shear was compared using digital image correlation (DIC) method. The specimens with span/thickness ratio 4 suddenly decreased in stiffness without increasing normal strain over cycles. Both specimens with span/thickness ratio 4 and 11 finally failed by delamination but they showed different failure process in how normal or shear strain developed.
Large-scale fatigue testing of a retrofitted 3rd shear web in a 34m wind turbine blade section
Authors: Waldbjørn J. P. , Berggreen C. , Ahmed S. , Nagy T. 
Published: November 2023

Abstract
Utilizing a fatigue-rated multi-axial strong-floor based test rig, the effect of a retro-fitted fish-mouth third shear-web geometry detail located within the double-curved trailing edge sandwich panels are evaluated in an inner 15m root section from a 34m wind turbine blade manufactured by SSP Technology. From previous research, a load configuration is identified, capable of triggering the breathing/pumping deformations in the trailing edge panels within the root and transition zone, which will drive the propagation on the shear-web disbonding mechanism. Investigation and evaluation of the shear web disbonding and associated mitigation are acquired through strain gauges, wire potentiometer and digital image correlation (DIC) measurements inside the root section.
Mode mixity for the fracture toughness obtained by climbing drum peel tests
Authors: Jespersen K M , Toftegaard H L 
Published: November 2023

Abstract
Wind turbine blades include numerous interfaces, which are known to be critical regions for early failure. Thus, reliable testing of interfaces and a solid understanding of the tests used are of utmost importance. The climbing drum peel (CDP) test is a standardized test for characterization of adhesively bonded interfaces, which in literature has been referred to as a possible simple alternative to mode I double cantilever beam testing of composites. The current work uses finite element modeling of the CDP setup to show that it is actually a mixed mode test, and therefore one cannot use it to obtain the mode I fracture toughness. It can, however, be used to compare different interfaces, keeping in mind that the comparison is done for a mode mixity of approximately 40°, and that one adherend has to be thin (around 0.5mm).
Quantification of process-induced effects on fatigue life of short-glass-fiber-filled adhesive used in wind turbine rotor blades
Authors: Rosemeier M , Holst T , Antoniou A 
Published: November 2023

Abstract
Cracks in the adhesive joints of wind turbine blades can often cause severe structural blade damage. Effects induced by the manufacturing process can have a significant impact on the cycle number toward crack initiation in the bonding material. This research compared two experimental series of neat adhesive, dog-bone-shaped specimens with different degrees of cure, fiber orientation, and porosity content, which were subjected to static and cyclic tension-tension loading. To enhance the comparability of the two coupon series, the experimental data was normalized. Normalization factors were introduced to compensate for the different properties of the two series. These factors were derived from correction models. After normalization, the S-N values of the two data series were in good agreement in the high-cycle fatigue regime. In the very-low-cycle fatigue regime, however, there was still a lack of agreement in some cases, including the static strength. Moreover, the failure mechanisms were investigated by analyzing images from the fracture surfaces and dedicated samples using X-ray microscopy. The correction models presented can be applied to estimate the design strength of adhesives. This knowledge can then be used to make rotor blade structures more resistant to crack initiation.
Viability of recycled fibres extracted from EoL composites
Authors: Laurikainen P. , Sarlin E. 
Published: November 2023

Abstract
Recycling thermoset-based composites is a technological and economic challenge. The predominating recycling methods (mechanical recycling and pyrolysis) downgrade the fibre properties (length, strength) and are energy-intensive. To avoid downcycling and to ensure economic feasibility, technological solutions need to be developed to enable recycling of long reinforcing fibres that can also be used in demanding applications. Thermochemical recycling, where reinforcing fibres are extracted from the depolymerized matrix, can be considered as an advanced option for recovery of higher quality fibres from EoL composites. Additional steps are required to use these fibres in new composite structures. Thermochemical recycling removes the sizing from the fibre surface making it difficult to handle and resulting in poor fibre-matrix compatibility especially in the case of glass fibres. In this study, we discuss the re-sizing of recycled fibres. We have focused on fibres extracted from glass fibre reinforced composites (GFRPs) from EoL wind turbine blades and carbon fibre reinforced composites (CFRPs) collected from aeronautics industry. We demonstrate the steps for a batch re-sizing process and study the effects of the re-sizing on the properties of composites made of recycled fibres. The interfacial properties are analysed with micro-mechanical testing using the microbond method – both for thermoset and thermoplastic composites – and with tensile tests for thermoplastic composites. Re-sizing significantly eases the handling of the fibres, but the interfacial compatibility is improved only in the case of GFRPs as thermochemically recycled carbon fibres (rCF) exhibit very good interfacial performance even without sizing. This study highlights that with proper recovery and resizing processes, recycled fibres can be viable feedstocks for various applications and – with future improvements on the fibre recovery methods – even approach the applicability of virgin fibres.
The state-of-the-art of atmospheric pressure plasma for transdermal drug delivery
Authors: NIE 聂 Lanlan 兰兰 , LIU 刘 Dawei 大伟 , CHENG 程 He 鹤 , ZHAO 赵 Feng 峰 , LU 卢 Xinpei 新培 
Published: November 2023

Abstract
Plasma-enhanced transdermal drug delivery (TDD) presents advantages over traditional methods, including painless application, minimal skin damage, and rapid recovery of permeability. To harness its clinical potential, factors related to plasma’s unique properties, such as reactive species and electric fields, must be carefully considered.This review provides a concise summary of conventional TDD methods and subsequently offers a comprehensive examination of the current state-of-the-art in plasma-enhanced TDD. This includes an analysis of the impact of plasma on HaCaT human keratinocyte cells, ex vivo/in vivo studies, and clinical research on plasma-assisted TDD. Moreover, the review explores the effects of plasma on skin physical characteristics such as microhole formation, transepidermal water loss (TEWL), molecular structure of the stratum corneum (SC), and skin resistance. Additionally, it discusses the involvement of various reactive agents in plasma-enhanced TDD, encompassing electric fields, charged particles, UV/VUV radiation, heat, and reactive species. Lastly, the review briefly addresses the temporal behavior of the skin after plasma treatment, safety considerations, and potential risks associated with plasma-enhanced TDD.