bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characteristics of mangrove ecosystems in Weda Bay: Environment, Vegetation, and Aboveground Carbon Stocks
Authors: Suyadi  
Published: December 2020

AbstractWeda Bay is one of the largest mangrove habitat in North Maluku and one of mega-biodiversity spots in Indonesia. However, data and information of mangrove vegetation and its ecosystem services particularly carbon stocks were limited. Mangroves were mapped using GIS-remote sensing and vegetation were sampled using transects in five sites of mangroves across Weda Bay. Tansects were extended from seaward to landward to cover all vegetation variation and hydrodynamic conditions. Environmental data (water and substrate): temperature, pH, Dissolved Oxygen (DO), particle size of sediment, and nutrient (phosphate and nitrate) were collected. The objective is to identify characteristics of mangrove landscape and vegetation, it is environment, and it ecosystem services in term of aboveground carbon stocks. The study showed that the characteristics of landscape and vegetation of mangrove varied among hydrodynamic conditions. The bay is important habitat for 8.5% (17 species) of mangrove species in Indonesia.Rhizophora apiculataandBruguiera gymnorrhizawere the most dominant mangroves. The environmental conditions of Weda Bay particularly northern part of the bay were suitable for mangrove growth. Substrate of mangrove did not vary significantly with distance from the seaward which was mainly dominated by mud and clay (3.9 - 63 μm). Mean water temperature in the mangrove area was 29.3°C, salinity 34.1 psu, mean water suspension was 46 mg l−1, mean dissolved oxygen was 3.2 mg l−1, and water current was 10 m s−1. Aboveground carbon stock was considerable (752 ± 17.6 Mg C ha−1). Change in aboveground carbon stocks over the distance from the seaward edge to landward edge was not significantly different. In contrast, aboveground carbon stocks varied among hydrodynamic conditions: estuarine, delta, and riverine mangroves. Delta mangrove contained the highest carbon stock (993 ± 27.7 Mg C ha−1), followed by estuarine mangroves (645 ± 12.2 Mg C ha−1) and riverine mangroves (244 ± 8.6 Mg C ha−1). However, this ecosystem faced some threats such as mangrove extraction and plastic pollution. Better mangrove management e.g. reducing mangrove extraction and pollution are required to protect the functions and ecosystem services of mangroves. In addition, conserving mangrove forests will allow the government to achieve blue economy goals and to mitigate climate change through carbon sequestration.
Changes in the Ambon Bay Seagrass for the Past Five Years (2011 – 2016)
Authors: Irawan A , Prayudha B 
Published: December 2020

Abstract
Ambon Bay is located on Ambon Island, which most of the area is within the Ambon City, the capital of Maluku Province. The coastal ecosystem such as coral reefs, mangroves, and seagrass beds still exist on this bay. However, as a coastal ecosystem in a crowded city, the potential of degradation for these ecosystems is immense. Over the past five years, many changes have taken place in this bay. In the land section, the construction of housing and large buildings such as shopping centers has occurred. Besides, on the coast, there has been a construction of new docks, and several locations have been reclaimed. Therefore, in 2016 there was a re-observation of the seagrass condition at all transect locations of 2011, to see the changes that have occurred in the seagrass bed in Ambon Bay over the past five years. The results will be compared to the satellite imagery of each location. Overall, the condition of seagrass beds in Ambon Bay in 2016 has decreased from the initial observation in 2011. Of the seven research locations, only one location (Halong) has an increase in its conditions, with seagrass canopy cover rise by almost twofold from previous data (24.29% rise to 50.00%). Four locations experienced a decline in condition, from a slight decrease in Waiheru and Lateri (25.00% down to 20.91% and 47.14% down to 39.33% respectively) to a sharp decrease in Tanjung Tiram and Passo (65.67% down to 39.33% and 48.33% down to 16.25% respectively). The remaining two locations (Tantui and Hative) were in worse condition because they were damaged by the reclamation project. From 2011 to 2016 satellite image comparison, almost all locations show changes in their land use, with more buildings built near and on the coastal area, except in Halong. This finding indicates that seagrass condition negatively affected by coastal development.
Ecosystem Characteristics in Inner Ambon Bay
Authors: Sabrina P L , Putri M R , Noerbaeti E 
Published: December 2020

Abstract
Inner Ambon Bay has been used as a location for fish farming. The mean seasonal of chemical parameters as much as 3,92 – 6,52 ppm for dissolved oxygen, the surface concentration of nitrate and phosphate each one is 0,05 – 0,143 ppm and 0,014 – 0,6 ppm, meanwhile the pH reach 7,95 – 8,44. The mean seasonal of physical parameters about 30,3 – 34,4 ‰ for salinity and the value of surface temperature is 26,5 – 31,5 °C. This research reviews the condition of an ecosystem in Inner Ambon Bay, consist of nutrients, phytoplankton, zooplankton, and detritus (NPZD) concentrations. The input model uses data on temperature and average nitrate concentration from Ambon Marine Aquaculture Center (Balai Perikanan Budidaya Laut Ambon) which is located on 3,63529 °S and 128,2312 °E. Model simulation is carried out for 4 years (2015 – 2018) with the time step of 6 minutes. The model simulation result shows that the mean nutrient concentration is 3,52 – 3,84 mmolC/m3. The verification of nutrient concentration from a model with observation data (nitrate concentration) used a statistics method. The value of RMSE is 0,05 mg/L or 0,5 mmolC/m3, meanwhile correlation is 0,41. The highest nutrient concentration occurred in the southeast season. It could be influenced by upwelling from Banda Sea that carried high nutrients from the surface.
Ocean color as a proxy to predict sea surface salinity in the Banda Sea
Authors: Wouthuyzen Sam , Kusmanto E. , Fadli M. , Harsono G. , Salamena G. , Lekalette J. , Syahailatua A. 
Published: December 2020

AbstractSalinity is an important ocean parameter that greatly influences physical, chemical, and biological ocean properties and processes. Salinity combines with sea temperature and chlorophyll-a (Chl-a) that mostly sourced from remote sensing-based measurements can reveal ocean quality and supports fisheries. However, the satellite-derived Sea Surface Salinity (SSS) dataset (∼ 9 years) is not as temporally adequate as SST and Chl-a datasets (∼3 decades) and thus, preventing a comprehensively spatio-temporal analysis of this water quality aspect. Since (SSS) can be approximated using satellite-derived ocean color products having the similar temporal length of datasets to the available SST and Chl-a datasets, predicted SSS can be produced from these ocean color products to fill the gap of the existing SSS dataset. This study aims to estimate the SSS from ocean color products of Aqua-MODIS satellite with a spatial and temporal resolution of 4 km and 8-daily by developing an empirical model. The ocean color data used were remote sensing reflectance (Rrs) of blue, green and red wavelengths (412, 433, 469, 488, 531, 547, 555, 645, 667 and 678 nm). The absorption coefficients due to detritus material non-algae, Gelbstof and CDOM (ADG) at 443 nm and the absorption coefficient due to phytoplankton (APH) at 443 nm data were also used. The Banda Sea was chosen due to its large-scale upwelling system (∼300 km × 300 km) that providing an important ocean process related to fishery and the availability of in-situ salinity measurements (i.e. CTD casts from series of Research Vessel (R/V) Baruna Jaya III, VII and VIII cruises and Argo floats), which a part of these datasets will be used to validate predicted SSS. Results showed that of all ocean color parameters tested, ADG at 443 nm was strongly correlated with in-situ SSS through the polynomial order 5 regression equation with a high R2of 0.94 and a low RMES value of 0.101 PSU. Although this empirical model has high accuracy, but based on RMSE analysis results from various locations within and outside the Banda Sea that influenced by the Pacific and the Indian ocean water masses indicates that this model actually good to predict in-situ SSS only for a narrow range SSS of 33.4-34.5 PSU. Nevertheless, this model has a limitation, it is still can be used for predicting and mapping the SSS for Banda Sea as well as for most of the Indonesian waters. The long-term meteorological SSS map (2003-2017) derived by this model together with the SST and Chl-a maps can show clearly the upwelling phenomena of the Banda Sea, which occurred during the southeast monsoon (June-July-August, JJA). This study proves that ocean color data from Aqua-MODIS satellite can be applied to estimate and to map the SSS for most of the Indonesian waters, but validations for this model is still needed
Sustainable Port Planning in Future Indonesian Ports: A Case Study of Mafa Port based on UN SDGs
Authors: Amien Dhaneswara Al , Setyani Fera Dwi , Sihombing Rajin 
Published: December 2020

Abstract
As one of the biggest maritime nation in the world, Indonesia has big advantages and potential with its long coastline. Part of the maritime industry that Indonesia can provide is the port services. Port development hopes to carry the development of the area in many aspects with the sustainable approach. This study uses Mafa Port in Indonesia as the study case location. This study looks into the new port development effect in regard to 5 goals of United Nation Sustainable Development Goals (UN SDGs), to see the connection of new port to the regional development. As a result, this study identifies the related sustainable goals with the port development and also the approach being used by sustainable port base practices.
A review of solid oxide fuel cell application
Authors: Li Weiquan , Wang Yang , Liu Weinan 
Published: December 2020

Abstract
Solid oxide fuel cell (SOFC) is an efficient chemical fuel cell, which has been widely used in different fields. The successful application of this technology is of great significance to alleviate the energy crisis, meet the demand of the quantity and quality of electricity, and protect the ecological environment. SOFC has been utilized with gas turbine (GT), homogeneous charge compression ignition (HCCI) and small-scale power generation. This article introduces the characteristics, working principle and engineering application of solid oxide fuel cells in more detail.
Spatio-temporal dynamic evaluation of land use benefit and its coupling coordination in Gansu Province
Authors: Lan Zheng , Zhi-bin Zhang , Ya-xiong Ma , Jiang-hong Dong 
Published: December 2020

Abstract
Based on the model of “economic benefit-social benefit-ecological benefit”, the evaluation index system of land use benefit was constructed, revealing the dynamic changes of the spatial and temporal pattern of land use benefit in Gansu Province. Combining the coupling coordination degree model, it analyzes the coupling coordination degree of economic, social and ecological benefits, and quantitatively analyzes its main limiting factors. The results show that: (1) The comprehensive benefits of land use in Gansu Province from 2000 to 2017 showed an upward trend. The spatial pattern of “high in the north and low in the south” was obvious, and a “dual core” structure with Lanzhou and Jiayuguan as the main cities was formed.(2) From the perspective of sub-systems, economic benefits show a trend of “rising first and then falling”, and the spatial pattern is still “high in the north and low in the south”; the social benefits basically show an upward trend. The northwest is characterized by “first decline and then rise”, and the southeast is characterized by “continuous rise”. The spatial pattern is “high in the middle, followed by the northwest, and lower in the southeast”. The ecological benefits are mainly present the trend of “rising first and then falling” markedly changed the spatial pattern.(3) From the perspective of the coupling coordination relationship, all cities in Gansu Province are in a state of imbalance, mainly with moderate imbalance, and the coupling coordination needs to be improved.
Experimental study on acoustic emission frequency characteristics of granite under different cyclic loading and unloading
Authors: Jie Tan , Zhaoyang Song , Zaihai Wu , Fangbo Ning 
Published: December 2020

Abstract
In Granite acoustic emission tests were performed during three different cyclic loading and unloading processes. The relationship between the acoustic emission frequency distribution pattern and the loading and unloading mode of granite during the cyclic loading and unloading process was discussed. The distribution pattern of the peak frequency with the stress evolution is analyzed qualitatively and quantitatively. Studies have shown that: in the first cycle of loading and unloading at each stage of the three cyclic loading and unloading processes, the acoustic emission ringing count and peak frequency are significantly increased, which has a significant Kaiser effect. It proves that the Kaiser effect essentially remembers the extent of the damage inside the rock previously. In the process of loading and unloading in the fourth stage cycle, the AE ring count showed a “U”-shaped change law, showing a significant Felicity effect. Comparing the three different cyclic loading and unloading modes, with the increase of the lower limit stress, the stress amplitude decreases, and the AE ringing count corresponding to the lower limit stress value of the unloading gradually decreases, and the peak frequency distribution shows more dense or concentrated characteristics. At the beginning of the third stage cycle, the proportion of high frequency band (140∼162kHz) gradually decreased, and the proportion of lower frequency band (11-18kHz) gradually increased. With the increase of the lower limit of cyclic loading and unloading, the lower frequency band (11-18kHz) in the fourth-stage cyclic loading and unloading process takes up a higher proportion, even as high as 95%. It indicates that the rock samples at this stage mainly undergo large-scale failure, and the rock samples are in a critical failure state. These provide the basis for exploring the evolution mechanism of rock mechanical behavior and the prediction method of instability and damage.
Study on the Mechanism of Enhancing Cementing Quality with the Downhole Shear Swirling Flow Vibration Cementing Tool
Authors: Zhenning Yu , Fahao Yu , Ting Wei , Yue Wang 
Published: December 2020

Abstract
Downhole shear swirling flow vibration cementing tool has shear, rotational flow and vibration triple effects. It can improve cementing quality in various aspects. This paper developed discussion in the aspects of the tool to change cementing fluid performance by shear, to realize turbulent displacement and improve the wall shear stress by swirling flow, to change periodically relative position of clearance by casing eccentric revolution, to increase compression strength of cement by vibration and so on. It analyzed the mechanism of enhancing cementing quality of the downhole shear swirling flow vibration cementing tool in detail. It deepened the understanding of the tool. Then the research results help to promote the tool further application in oil and gas well cementing engineering field, and further increase the oil and gas well cementing quality.
Stabilized Lithium Anode via a Uniform Li-Ions Distribution Enabled by a Robust LLZTO/Polysulfone Electrospun Membrane
Authors: Yin Yuxin 
Published: December 2020

Abstract
Lithium metal batteries (LMBs) using lithium metal as the anode is a promising technical route for the next battery. lithium metal anode delivers the highest energy density. Therefore, it has been extensively studied by scientists. Unfortunately, Li-metal anode is incapable to practical applications due to the dendritic propagation during the repeated charging/discharging process leading to short-circuit and severe safety issues. we loaded the fast Li-ions conductor LLZTO ceramic particles on the polysulfone (PSU) fiber. The LLZTO/PSU composite fiber membrane networks inherited both lithiophilic properties and strong rigidity from LLZTO particles, which could suppress the local electric field and exert influence of adjusting the distribution and deposition behavior of Li-ions while the improved mechanical properties against lithium dendrites. Therefore, the lithium metal anode with modified surface of composite fiber can effectively inhibit the formation of lithium dendrites with a prolong life-span.
Design of The Thick Wind Turbine Airfoil Based on An Improved MOPSO Algorithm
Authors: Huang Xinxiang , Guo Xiaofeng , Zhang Ren 
Published: December 2020

Abstract
The design of a thick wind turbine airfoil is a multi-constraint and multi-objective optimal problem. In order to make the thick airfoil with a blunt trailing-edge have better aerodynamic and structural performance simultaneously, a new method for thick airfoil optimal design based on an improved MOPSO algorithm was presented in this paper. To show the performance of the new design technique, the optimization is accomplished on the wind turbine airfoils with a 40% maximum relative thickness, and the Pareto-optimal set is obtained. The representative airfoils are picked, analyzed, and compared with a traditional wind turbine airfoil (DU00-W2-401) at Re=2×106 for free and fixed transitions, the results show that the new airfoils have better performance than the DU00-W2-401.
A Comparison of Energy Efficiency in AC and DC Microgrid with New Energy
Authors: HuipengLi  , Li Shengwen , Wang Tan , Wang Xu , Chang Xiao , Zhang Min , Meng Runquan 
Published: December 2020

Abstract
As photovoltaic, wind power and other new energy sources are connected to the power grid on a large scale, the research on key technologies of microgrid needs to be further improved. Since most distributed generation and energy storage devices are mostly powered by direct current, DC distribution technology has got more and more attention. Aiming at the difference of energy efficiency between AC and DC microgrid, this paper proposes the analysis method of “the efficiency of source side with distributed generation”, establishes a mathematical model of system loss of AC and DC microgrid with distributed generation and sets up a selection principle of distribution system mode through the intersection point of system loss rate, from the perspective of energy efficiency. The calculation results show that the loss rate of DC microgrid with distributed power source is lower than that of AC microgrid supposing the DC load ratio is 50%. The system loss rate curve confirms the necessity of DC distribution system technology research. With the continuous access of distributed generation and energy storage devices to microgrids, and the increasing improvement of DC load rate, the DC microgrid with distributed generation will have more advantages in the future.
Research on the Design and Development of Animation Cultural and Creative Products in Jilin Province under the Internet Big Data
Authors: Liu Kun , Lu Hao 
Published: December 2020

Abstract
Under the background of the big data era, based on the regional characteristics and traditional national culture of Jilin Province, this paper focuses on the application of big data technology in the design and development of animation, cultural and creative products in different links. With big data technology as the guide of product design, the paper puts forward innovative design ideas and methods for the design of animation and cultural and creative products in Jilin Province to construct and develop the IP effect in this field, thus enhancing the competitiveness of Jilin Province in this field and solving the current problems in the development of the animation and cultural and creative industries in Jilin Province.
Study on the Influence of Diatomite with Different Shapes on the Moisture Absorption and Release Performance in Changbai Region of Jilin Province
Authors: Liguang Xiao , Hongyang Kou 
Published: December 2020

Abstract
In this paper, different morphologies of diatomaceous earth (disc, cylindrical) were purified, and characterized by SEM, BET and pore size distribution, and moisture absorption and desorption tests were carried out. The results show that the humidity control performance of the cylindrical diatomite sample is better than that of the disc-shaped diatomite sample. Its 24h moisture absorption, 24h moisture release, volumetric moisture content ratio, average volumetric moisture content and other indicators all exceed Disc-shaped diatomite samples; the specific surface area of cylindrical diatomite samples is higher than that of disc-shaped diatomite samples, and the pore size distribution is more reasonable. Combined with the analysis of humidity control performance, cylindrical diatomite samples are more suitable As an excellent humidity control material.
Problems and Countermeasures in Protection of Drinking Water Sources in Hubei Province
Authors: Lin Xin , Zhang Ji 
Published: December 2020

Abstract
This paper introduces the current situation of drinking water sources in Hubei Province, and points out that in the new period of harnessing the Yangtze River, the drinking water sources are faced with prominent contradictions such as low annual water consumption and prominent non-point source pollution. At the same time, the emergency standby water source is insufficient, and the water production technology of water supply enterprises needs to be improved. In order to ensure the optimal allocation and rational utilization of water resources, some suggestions are put forward, such as controlling the non-point source pollution system, actively promoting the construction of standby water source, and timely upgrading the water supply treatment process of water plants.
Application of fuzzy comprehensive evaluation of improved AHP in ship safety evaluation in plateau reservoir area
Authors: Jun Li 
Published: December 2020

Abstract
There are many factors that affect the safety of transport ships in the plateau reservoir area, which makes it difficult to allocate weights reasonably, and a large amount of single factor information is submerged. A fuzzy comprehensive evaluation model using improved AHP (AHP) is proposed, the advantages of the model are explained, and the method of constructing the model is introduced. The practicality of the model is verified through examples, and the results show that the model can scientifically and reasonably assess the safety risks of ships, and provide a reference for ship management companies and maritime safety bureaus to improve management methods.
Development law of lateral displacement of deep soil mass in submerged breakwater
Authors: Liu Wenbin , Zhao Yan 
Published: December 2020

Abstract
The 12.5m deep water channel project under Nanjing of the Yangtze River is a national key project. Based on the hechangzhou waterway section of the project, combined with the characteristics of water depth, strong wind, rapid flow and high wave, aiming at the problems such as short construction time, difficult instrument embedding, easy damage and low data collection efficiency, field monitoring test is carried out to monitor the foundation of submerged dike structure in the construction process The lateral displacement of deep soil mass, clear its development law, provide a strong guarantee for safe construction.