bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improvement of maintenance and asset management strategy in a maritime terminal under regulatory and physicochemical testing criteria
Authors: Arrieta-Estrella E A , Dueñas-Ramírez L M 
Published: June 2023

Abstract
This work was developed in the gas and oil sector, more specifically in the equipment that make up the Coveñas maritime terminal, one of the main oil terminals in Colombia. This work sought to improve the maintenance strategy and asset management of all terminal equipment through criteria based on international standards such as International Organization for Standardization 14224, which guides the ranking of equipment; also considered were the results of physicochemical tests that were applied to sample materials obtained from the equipment in the field. With this information, a road map was drawn up to establish a maintenance and asset management plan to improve the efficiency of the marine terminal’s operation. The physical variables measured in this equipment and its parts, evidenced the importance of carrying out projects with interdisciplinary approaches, to enhance the achievement of the objectives set. In this specific case, a considerable improvement in maintenance work execution hours was shown.
Obtaining structural parameters of cerium-doped lanthanum cobaltites from X-ray diffraction pattern modeling
Authors: Oviedo Cuéter J M , Sánchez Pacheco L C , Mora Florez C D 
Published: June 2023

Abstract
In this work, structural parameters of lanthanum cobaltites doped with cerium atomic concentration of 1%, 3%, and 5 %, synthesized using the sol-gel method and considering calcination temperature of 900 °C, were estimated from the modeling of the X-ray diffraction patterns of the samples. Modeling of the experimental X-ray diffraction patterns is carried out using the Rietveld refinement method implemented with the Fullprof-Suite program. Estimation of crystallite sizes obtained from diffraction peak modeling, implemented with the X powder program, and using the Scherrer equation and Williamson-Hall plots, considering Lorentzian and Pseudo Voigt line profiles, are also performed. Additionally, the obtained compounds were also characterized by scanning electron microscopy. The identified phase for the samples corresponds to hexagonal perovskite structure and

R

3

¯

c

(# 167) space group, with crystallite size in the range of 38 nm to 56 nm. In general, significant changes in the structural parameters of the samples due to doping with cerium are not evidenced.
Mechanical analysis for personalized implant for neurocranial protection manufactured with Polymethylmethacrylate
Authors: Moncayo-Matute F P , Vázquez-Silva E , Torres-Jara P B , Peña-Tapia P G , Moya-Loayza D P , Abad-Farán G 
Published: June 2023

Abstract
Advances in terms of mathematical simulation techniques have favored the development of successful methodologies for the restoration or restitution of bone structures in the human body. Achievements in materials science and their physical, mechanical and biological characterization have allowed the development of biocompatible composites capable of achieving properties and similarities comparable to those of natural bone. This research aims to evaluate some mechanical properties of a customized cranial implant manufactured from polymethylmethacrylate. With the support of finite element method, the level of neurocranial protection offered by the manufactured implant is assessed.
Local Yang–Baxter correspondences and set-theoretical solutions to the Zamolodchikov tetrahedron equation
Authors: Igonin S , Konstantinou-Rizos S 
Published: June 2023

Abstract
We study tetrahedron maps, which are set-theoretical solutions to the Zamolodchikov tetrahedron equation, and their matrix Lax representations defined by the local Yang–Baxter equation. Sergeev (1998 Lett. Math. Phys.
45 113–9) presented classification results on three-dimensional tetrahedron maps obtained from the local Yang–Baxter equation for a certain class of matrix-functions in the situation when the equation possesses a unique solution which determines a tetrahedron map. In this paper, using correspondences arising from the local Yang–Baxter equation for some simple

2
×
2

matrix-functions, we show that there are (non-unique) solutions to the local Yang–Baxter equation which define tetrahedron maps that do not belong to the Sergeev list; this paves the way for a new, wider classification of tetrahedron maps. We present invariants for the derived tetrahedron maps and prove Liouville integrability for some of them. Furthermore, using the approach of solving correspondences arising from the local Yang–Baxter equation, we obtain several new birational tetrahedron maps with Lax representations and invariants, including maps on arbitrary groups, a nine-dimensional map associated with a Darboux transformation for the derivative nonlinear Schrödinger equation, and a nine-dimensional generalisation of the three-dimensional Hirota map.
Seasonal response of coccolithophores and its potential to reconstruct paleomonsoon in the eastern Indonesian seas: an overview
Authors: Yuwono F S , Rendy  
Published: June 2023

Abstract
Coccolithophore is a group of marine calcifying phytoplankton and its living distribution is sensitive to ecological change within the photic zone. Their coccoliths contribute majorly to the marine sediments and have become a reliable proxy in paleoceanography and paleoclimatology. The upper hydrology of the eastern Indonesian seas has been strongly influenced by seasonal climate change, the Australian-Indonesian monsoon. We review and discuss the result of previous studies on the response of living coccolithophore to seasonal change and the significance of their coccoliths as a proxy for reconstructing past dynamic of monsoon in the region. Coccolithophores abundance, species assemblages and coccolith malformation change in respond to the shift of photic environment condition modulated by reversing monsoon with particular responds across the region. Coccoliths variations in the marine sediment core archives from off southwest Sumba, eastern Banda Sea and Halmahera Sea show an insignificant control of glacial-interglacial climate variability to paleoproducitivity. Primary productivity based on the relative abundance of Florisphaera profunda has contributed to reconstruction of the past dynamic of Australian-Indonesian monsoon. However, more extensive and continuous observation of coccolithophores and their relationship with the photic environment in the eastern Indonesian seas is necessary for a better understanding of their response to monsoon dynamics in the present, past and future.
Sedimentary Facies of the Cimanuk River Delta on the North Java Coastal Area and Its Geotechnical Properties
Authors: Soebowo E , Sarah D , Wibawa S 
Published: June 2023

Abstract
Understanding the sedimentary facies and their engineering properties in the Cimanuk river delta is very important to support the regional infrastructure development and the environmental assessment of the north Java coastal area. This research is aimed to characterize the sedimentary facies association and its geotechnical properties of the Cimanuk delta, Indramayu, West Java. Methods included geotechnical boring and Cone Penetration Tests with pore water measurement (CPTu). The results show that the subsurface condition of the Cimanuk delta comprises several sedimentary facies development and boundaries, namely the delta plain, delta front, and prodelta. The delta plain consists of the fluvial channel sands and marsh-lagoon; the delta front consists of beach ridge, and the prodelta is of clay to silt thickening towards the northeast. The fluvial channel consists of fluvial sand and silt, dense and hard with SPT N value of 30 and cone resistance, qc of 2,000-10,000 kPa. The beach ridge comprises beach sand and sandy silt, loose to very dense, with qc value of 500-16,000 kPa and SPT N value of 30. The delta plain sandy silt has a variable consistency from very soft to hard with SPT N value of 1-37, and qc value of 300- 4,900 kPa. The prodelta clay and silt consist of very soft to medium consistency, with qc value of 200- 3,000 kPa and SPT N value of 1-8. The prodelta clay-silts engineering properties are very soft to a soft consistency. When development occurs in the marsh-lagoon and prodelta facies, particular caution must be taken. The vertical, lateral, and spatial sedimentary facies and their geotechnical properties can provide information for spatial planning in the coastal region.
Quaternary Seabed Sediment Characteristics as an indication of VMS-mineral deposits at the South Banda Basin and its surroundings, Indonesia
Authors: Aryanto Noor C.D. , Kurnio H. , Tuakia M.Z. , Tampubolon A. , Pardiarto B. , Widi B.N , Widodo W. , Kusnawan  
Published: June 2023

Abstract
The South Banda back-arc basin is a morphotectonic environment that is part of the South Banda Basin, characterized by a flat morphology with depths ranging from 5000m to 6000m. The purpose of this paper is to analyze and relate morphometric aspects to the Quaternary seabed sediment deposits deposited in an active tectonic basin in the Banda Sea area, including information on the type of sediment and its distribution as well as its relation to volcanic hosted-massive sulfide (VHMS) or volcanogenic massive sulfide (VMS) mineral deposits. The seabed lithofacies in the Banda Arc area were deposited in several morphotectonic environments. The types of deposits that are deposited are pelagic, and hemipelagic deposits including turbidite and volcanic origin deposits. Volcanic deposits consist of gravel, sand, muddy sand, and silt which are classified very poorly to moderately well sorted. The grain composition is volcanic lithic, feldspar, augite, hypersthene, and enstatite which are commonly found in volcanic arcs and troughs. Groups of volcanic grains composed of pyroxene andesite, pumice, and tuffite or siliceous gravel, distributed in the northern and the middle of the volcanic arc area are interpreted to originate from the Banda volcanic complex and the Seram-Gorong islands.
A preliminary magnetic anomaly study of the Nieuwerkerk Seamount, Banda Sea, Indonesia
Authors: Alodia G , Nugroho A B , Nurhidayat  , Kalambo Y , Fadillah A , Pratama A , Wiguna T 
Published: June 2023

Abstract
The Nieuwerkerk seamount has been identified in the Banda Sea since the 1930s by Dutch researchers through the Snellius Expedition. However, the physical description of the seamount and its relation to the surrounding seafloor features has not been discussed due to the lack of geophysical data in the area. This study addresses those issues by examining the shipboard magnetic anomalies acquired during the Jalacitra II-2022 “Banda” Expedition. The result indicates two possible magmatic flows, with the reduced-to-equator magnetic anomaly of around -120 nT and -30 nT at the main and secondary summits, respectively. No magnetic anomaly is identified at the ridge east of the seamount, indicating the absence of structure or magmatic rocks. An extreme magnetic anomaly contrast of up to 145 nT is indicated at the southern foot of the seamount, striking ENE-WSW. These magnetic discontinuities are possibly depicting strike-slip faults, which are also found at the three other smaller seamounts southwest of Nieuwerkerk. These preliminary physical descriptions are key to opening up a discussion on the structure and activities of the Nieuwerkerk seamount and its relationship with the surrounding seafloor features.
Geopark as a Participatory Collaborative Management Concept to Manage the Raja Ampat Archipelago
Authors: Septiana A R , Samodra H , Lamatenggo Y N 
Published: June 2023

Abstract
Numerous and multi-level organizations from sub-national to international working in Raja Ampat Regency as the globally important marine areas and world’s class tourism, yet the gap of knowledge and capacities with communities keeps distancing. Raja Ampat Geopark exists as a management agency that coordinates various programs implemented by multi-institutions with various interests within the Regency. Approaching the effective management, Raja Ampat Geopark performs through three stages: 1) mapping relevant stakeholders; 2) designing a participatory collaboration strategy; and 3) encouraging the collaborative works following the strategy where the roles of each stakeholder are clear. Master plan of Raja Ampat Geopark were developed and agreed by 41 related partners of were clustered into 8 interest groups, who are implementing 31 programs consists of 84 activities. This collaborative participatory marine management resulting an increase of documentation and published biodiversity data, of which empowered by the improved capacities of local government and communities in Raja Ampat.
Marine Protected Area management under the impacts of climate change and increased human activities in marine ecosystems: A review for Anambas Islands MPA
Authors: Taufiqurrahman Edwards , Prayitno Hanif Budi , Ibrahim Putri Sapira , Ratnawati Herlina Ika , Maslukah Lilik 
Published: June 2023

Abstract
The Anambas Islands is one of richest marine biodiversity area in western part of Indonesia, especially for species appeared in coral reef ecosystems. However, as in other parts of the world, climate change and increased human activities pose threats to the ecosystem’s sustainability. Efforts to maintain the balance of the ecosystem in Anambas Islands have been conducted by stating the Anambas Islands and its surrounding sea as a Marine Protected Area (MPA). Here, we review the studies featuring Anambas Island MPA in ecosystem resilience of the islands. From this review, we suggest that oceanographic parameters, especially marine biogeochemistry parameters, should be further utilized to provide environmental data to be used for policy development in the MPA management. Further research and development using marine biogeochemical parameter monitoring/assessment should be taken into consideration by relevant stakeholders in order to achieve MPA’s objectives.
Analysing climate change in the coastal zone: the case of Kepulauan Riau, Indonesia
Authors: Safitri Dian Prima , Hakim Abdul , Khairul Muluk M.R. , Putra Fadillah 
Published: June 2023

Abstract
Unsustainable development is our species’ biggest threat to private and public values. The coastal zone most affected by climate change and public value (PV) should be actively engaged with the environmental issues because ecology has provided the most fundamental criticism of PV. However, we still don’t fully comprehend how public value is considered while managing climate change in Kepulauan Riau, Indonesia. This paper challenges Moore’s strategic triangle as a framework for coordinating the process in producing public value, namely: the definition of public value; the authorising environment, and; organizational capacity. The purpose of the paper is to explore the public value considered in reducing the impact of climate change. We identified Moore’s strategic triangle using desk research and secondary sources. Results support the assertion that public value is not created by the public sector alone but also recognized by other sources. This study suggests that government develop and strengthen institutions to handle contemporary environmental issues in order to organize climate change. Lack of ecological literacy can have ramifications for organizational capability.
Determination of Marine Conservation Areas by means of Satellite Imagery and Participatory Planning in Bawean Island, Gresik Regency, East Java
Authors: Firmansyah F , Ariastita P G , Wirawan I , Yusuf M , Koswara A Y , Argarini T O 
Published: June 2023

Abstract
Bawean Island and its marine surrounding hold a lot of potential biotas in its marine ecosystem. To maintain these potential natural resources, it is necessary to make marine conservation efforts, one of which is by means of Bawean marine conservation area determination. This research began with the preparation of image processing to determine the distribution of seagrass and coral reef biota. Furthermore, a groundcheck was carried out to review the condition of the existing ecosystem, the results of which became input for FGD as a form of participatory planning. Categories, types, zones, and subzones of conservation areas are determined based on marine and fisheries regulations. As a result, seagrasses can be found at several points in Bawean waters with a total area of 125.60 ha. The average seagrass closure condition can be considered as moderate, with the most encountered species being Thalassia Hemprichii. Meanwhile, coral reefs distribution is scattered in almost all Bawean marine with a total cover area of 3,037.51 ha. The average live coral reef cover in the observation area reaches 76%, which can be considered as good condition.
Fractal Dimensions Analysis of Urban Agglomeration at Road Intersections in Metropolitan Malang Raya
Authors: Afrianto Firman 
Published: June 2023

Abstract
The agglomeration review is mostly carried out by identifying the physical and economic dispersal processes of the two growth poles. Many researchers conclude on the result of agglomeration rather than the process nor the forecasts. This study tries to examine the process of urban agglomeration in the metropolitan city of Malang. This is done by combining city fractal theory and urban percolation. The DBSCAN clustering approach at the intersection is used to identify the agglomeration process between the growth poles. While Minkowski’s Dimensional theory is used to identify the fractals that occur. The calculation results show that the maximum Minkowski dimension distribution figure is 200m. It indicates the fractals that occur in the road network data. The DBSCAN clustering modeling at 200m has a strong correlation with the number of light intensity values in the 2021 nighttime light satellite imagery. On the other hand, modeling at 250m to 350m provides an overview of the future agglomeration. This research can be the basis for urban planners to analyze the agglomeration process and predict the future.
The correlation between the city bus accessibility and transit ridership in Surabaya City, Indonesia
Authors: Handayeni K D M E , Firmansyah F , Fathoni S 
Published: June 2023

Abstract
Suroboyo Bus and Trans Semanggi Suroboyo are public modes in Surabaya City, should be one way to serve city mobility in high number. However, the load factor of the city bus is below 50%. Therefore, it is necessary to evaluate the provision of public transportation, such as the city bus accessibility. This study uses the Public Transport Accessibility Levels (PTAL) method to analyze the city bus accessibility. The analysis result shows that most of the city bus accessibility levels are in the very poor category. This means that the city bus system could cover the city area at low level. Following that, the relationship between the accessibility level and the transit ridership is analyzed using correlation analysis. The results show that there are a significant correlation between the variable number of passengers and the bus stop accessibility index; frequency with the purpose of travel; accessibility index with the distance variable (distance of the departure stop from the origin location; distance of the destination stop to the destination location; distance traveled from the departure stop to the destination stop and total mileage); the frequency with the socioeconomic variables (age; average monthly income and driving license ownership). Based on these results, some recommendations are proposed to increase the accessibility level for influencing the demand of city bus.
Recent progress of organ-on-a-chip towards cardiovascular diseases: advanced design, fabrication, and applications
Authors: Wu Hanbai , Shi Shuo , Liu Yi , Zhang Qiang , Lam Raymond H W , Lim Chwee Teck , Hu Jinlian 
Published: June 2023

Abstract
Cardiovascular diseases (CVDs) are a major cause of death worldwide, leading to increased medical care costs. To turn the scale, it is essential to acquire a more in-depth and comprehensive understanding of CVDs and thus formulate more efficient and reliable treatments. Over the last decade, tremendous effort has been made to develop microfluidic systems to recapitulate native cardiovascular environments because of their unique advantages over conventional 2D culture systems and animal models such as high reproductivity, physiological relevance, and good controllability. These novel microfluidic systems could be extensively adopted for natural organ simulation, disease modeling, drug screening, disease diagnosis and therapy. Here, a brief review of the innovative designs of microfluidic devices for CVDs research is presented, with specific discussions on material selection, critical physiological and physical considerations. In addition, we elaborate on various biomedical applications of these microfluidic systems such as blood-vessel-on-a-chip and heart-on-a-chip, which are conducive to the investigation of the underlying mechanisms of CVDs. This review also provides systematic guidance on the construction of next-generation microfluidic systems for diagnosis and treatment of CVDs. Finally, the challenges and future directions in this field are highlighted and discussed.
Roadmap on nonlinear optics–focus on Chinese research
Authors: Ren Mengxin , Xu Jingjun , Lan Pengfei , Lu Peixiang , Li Zhi-Yuan , Hong Li-Hong , Wang Yulei , Bai Zhenxu , Lv Zhiwei , Zhou Zhi-Yuan , Shi Bao-Sen , Zhang Yong , Zhu Shining , Xiao Min , Aya Satoshi , Lu Yan-qing , Fan Huixin , Luo Min , Ye Ning , Sun Zeyuan , Liu Wei-Tao , Wu Shiwei , Li Qingyun , Hu Hui , Zheng Yuanlin , Chen Xianfeng , Hu Xiaoyong , Tian Chuanshan , Hu Zixian , Li Guixin , Hu Yi , Huang Kun , Zeng Heping , Li Zhen-Ze , Sun Hong-Bo , Dong Lei , Li Runfeng , Yang Wenkai , Shi Kebin 
Published: June 2023

Abstract
In nonlinear optical systems, the optical superposition principle breaks down. The system’s response (including electric polarization, current density, etc) is not proportional to the stimulus it receives. Over the past half century, nonlinear optics has grown from an individual frequency doubling experiment into a broad academic field. The nonlinear optics has not only brought new physics and phenomena, but also has become an enabling technology for numerous areas that are vital to our lives, such as communications, health, advanced manufacturing, et al. This Roadmap surveys some of the recent emerging fields of the nonlinear optics, with a special attention to studies in China. Each section provides an overview of the current and future challenges within a part of the field, highlighting the most exciting opportunities for future research and developments.
3D positioning and autofocus of the particle field based on the depth-from-defocus method and the deep networks
Authors: Zhang Xiaolei , Dong Zhao , Wang Huaying , Sha Xiaohui , Wang Wenjian , Su Xinyu , Hu Zhengsheng , Yang Shaokai 
Published: June 2023

Abstract
Accurate three-dimensional positioning of particles is a critical task in microscopic particle research, with one of the main challenges being the measurement of particle depths. In this paper, we propose a method for detecting particle depths from their blurred images using the depth-from-defocus technique and a deep neural network-based object detection framework called you-only-look-once. Our method provides simultaneous lateral position information for the particles and has been tested and evaluated on various samples, including synthetic particles, polystyrene particles, blood cells, and plankton, even in a noise-filled environment. We achieved autofocus for target particles in different depths using generative adversarial networks, obtaining clear-focused images. Our algorithm can process a single multi-target image in 0.008 s, allowing real-time application. Our proposed method provides new opportunities for particle field research.