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Nantong Daxue xuebao. Ziran kexue ban
ISSN 1673-2340 · Editorial Department of Journal of Nantong University (Natural Science Edition) · 292 artikel di indeks
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Artikel Jurnal
Analysis of phosphorus fraction characteristics and influencing factors in typical selenium-rich agricultural soils in China
Soil selenium bioavailability is significantly influenced by phosphorus(P) fractions, yet the regional variability of P components and their key driving factors in Se-rich agricultural soils remain poorly understood. In this study, 36 farmland soil samples were collected from nine representative…
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Artikel Jurnal
Succession characteristics and ecological significance of Cladocera assemblages in Bosten Lake over the past century
As essential primary consumers and secondary producers in freshwater lake ecosystems, the composition and abundance of Cladocera directly reflect the status of lake ecosystems. Bosten Lake is one of the most important freshwater lakes in northwestern China. This study analyzes the zooplankton…
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Artikel Jurnal
Research progress in preparation process of fiber-based carbon aerogels
Carbon aerogels have attracted considerable attention due to their high specific surface area, ultra-high porosity, and low density. With advances in fiber materials research and nanotechnology, fiber-based carbon aerogels have demonstrated superior tensile strength, compressive resistance, and…
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Artikel Jurnal
Preparation and piezoelectric properties of bacterial cellulose/chitosan/barium titanate aerogels
To prepare piezoelectric sensors with good mechanical and piezoelectric properties, BC/CS and BC/CS/BT-OH composite aerogels were fabricated using bacterial cellulose(BC) and chitosan(CS) as the aerogel matrix and hydroxylated barium titanate nanoparticles(BT-OH) as the piezoelectric material via…
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Artikel Jurnal
Research on the antibacterial modification and properties of melt blown materials using DEHMA
Melt-blown air filtration materials can capture harmful microorganisms but risk releasing them as secondary pollutants. To address this problem, polypropylene(PP) melt-blown material was used as a substrate, onto which the quaternary ammonium salt antibacterial agent 2-(dimethylamino)ethyl…
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Artikel Jurnal
Preparation and structural control of flexible alumina-based nanofiber membranes
Alumina(Al_2O3) nanofiber membranes are promising high-temperature thermal insulation materials with broad applications in aerospace, firefighting, and rescue operations. However, rapid grain growth during phase transformation tends to cause brittle cracking, limiting their practical use. Element…
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Artikel Jurnal
Fabrication and electromagnetic wave absorption properties of flake carbonyl iron/polyester fiber reinforced composites
Flake carbonyl iron powder(CIP) is a typical magnetic-loss electromagnetic wave absorber, but its high density limits practical application. In this study, CIP was compounded with waterborne polyurethane( PU) and polyester fiber(PET) to prepare CIP/PET/PU composites, and their performance was…
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Artikel Jurnal
Preparation and evaluation of X-ray shielding performance of Bi_2O3/TPU/W-coated yarn fabric
To investigate the preparation process and X-ray shielding performance of bismuth oxide/polyurethane/tungsten wire(Bi_2O3/TPU/W) sheathed yarn fabrics, using a spinning solution of polyurethane(TPU) and bismuth oxide(Bi_2O3) with tungsten wire(W) as the core layer, Bi_2O3/TPU/W sheathed yarn was…
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Artikel Jurnal
Mobile robots path planning based on improved ant colony algorithm
Path planning for mobile robots is considered one of the fundamental research areas in robotics. It involves determining an optimal, collision-free path from a start point to a target based on the assigned task and environmental perception. To address the limitations of the standard ant colony…
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Artikel Jurnal
Vehicle scheduling optimization at unsignalized intersection based on Petri net and improved black-winged kite algorithm
To meet the demand for efficient vehicle passage at unsignalized intersections in intelligent connected environments, this study proposes a new vehicle scheduling optimization method for unsignalized intersections based on a Petri net model, a deadlock avoidance strategy, and an improved…
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Artikel Jurnal
DL-SESTR:a deep learning-based semantic encoding method for synthetic trajectory reconstruction
Background knowledge attacks pose serious threats to trajectory privacy by exploiting prior knowledge to infer user behavior patterns. Existing trajectory reconstruction methods, however, suffer from two major limitations.First, they fail to address semantic location information leakage…
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Artikel Jurnal
Analysis of influencing factors and action mechanisms of karst collapse based on the discrete element method
To address the risk of karst collapse during wharf construction in covered karst areas, this study focuses on a karst collapse event of the ″ clay-over-sand″ composite overburden induced by the construction of bored piles by percussion drilling at a port in Jiujiang. Employing discrete element…
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Study on the fracture law of the combined structure of curved fissure and tunnel based on discrete element method
In view of the widespread existence of cracks in rocks and their geometric characteristics affecting rock mechanical properties, and the previous studies on the interaction between tunnels and cracks mostly focused on straight cracks, this study aims to explore the interaction mechanism between…
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Artikel Jurnal
Fuzzy clustering iterative post-evaluation of “Four New″ asphalt pavement technologies considering preferences
In order to further improve the post evaluation system of the “Four New″ technologies(new materials, new technologies, new processes, and new equipment) for road maintenance, the study adopts an index weight vector method that incorporates decision-makers′ preference factors, and proposes an…
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Artikel Jurnal
Modeling and simulation of wind power-photovoltaic-thermal power cooperative optimal scheduling based on stepped carbon price
To enhance the absorption rate of new energy within the power dispatching of new energy systems, the uncertainty of new energy output must be addressed, and an appropriate low-carbon management mechanism should be designed properly. In this paper, the adaptive kernel density estimation method is…
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Artikel Jurnal
Higher-order multi-scale computational method and its error estimation for heat conduction problem of quasi-periodic composite structures
In this paper, a comprehensive computational framework is established based on multiscale asymptotic analysis for analyzing the heat conduction performances of quasi-periodic composite structures, integrating lower-and higher-order microscopic unit cell models, a homogenized macroscopic model, and…
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Artikel Jurnal
Effect of heat treatment processes on the microstructure and properties of low-alloy high-strength steel Q890D
To improve the comprehensive performance of Q890D, the influence mechanism of different quenching temperatures on microstructure, properties, and fatigue life was analyzed. The microstructure and mechanical properties of Q890D low-alloy high-strength steel subjected to various quenching…
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Artikel Jurnal
Dual encoder-based reaction prediction for multilevel organic chemistry
Prediction of forward reactions in organic chemistry as a critical artificial intelligence(AI) application has attracted more attention from researchers in recent years. The simplified molecular-input line-entry system(SMILES)provides a method to linearize the chemical molecular formula. Thus…
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Artikel Jurnal
Stock index futures trading strategies based on model ensemble reinforcement learning method
This paper focuses on stock index futures and designs an integrated reinforcement learning quantitative trading strategy based on advantage actor critic(A2C) model and proximal policy optimization(PPO) model. First, the extreme gradient boosting(XGBoost) model is used to select key technical…
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Artikel Jurnal
Recent progress in circularly polarized organic light-emitting diodes based on chiral supramolecular assembly
Circularly polarized organic light-emitting diodes(CP-OLEDs) have demonstrated significant application potential in areas such as 3D displays and optical information encryption, owing to their intrinsic capability to directly generate circularly polarized electroluminescence. However, achieving…