通讯机构：
[Cheng, F ] J;Jiangnan Univ, Sch Mech Engn, Wuxi 214122, Peoples R China.
关键词：
Small sample data;Multi-period-sequential-index combination;Forecasting method;Accuracy evaluation;Noise ratio
摘要：
Based on multi-period-sequential-index combination (MPSIC) technology, three forecasting methods (auto-MPSIC, IV- MPSIC, MSEI-MPSIC) were proposed for short-term prediction of small sample data. Natural gas datasets, coal datasets, electricity datasets and atmosphere datasets were separately tested by using MPSIC method, and then impact of weighting factors, forecasting accuracy analysis were carried out for MPSIC method as well as other comparative methods. The results showed that, auto-MPSIC method was partial to use statistical indicators, such as peak-to-peak, average, root mean square, to decrease prediction error, and meanwhile was also inclined to use sequential index at time of ti-1 next to ti to improve prediction accuracy. It was also concluded that: the proposed MPSIC method could achieve higher prediction accuracy compared with other methods; the robustness of auto-MPSIC method was slightly better than that of IV-MPSIC and MSEI-MPSIC under condition of noisy data, which was attributed to an adaptive weight allocation technology considering statistical distribution of forecasting errors.
摘要：
Currently, researches related to asphalt UV aging mostly based on constant-intensity UV radiation, which is not consistent with its real service condition. In this study, the variable-intensity and constant-intensity UV radiation conditions were proposed on the principle of constant total radiation. The UV-aged neat asphalt film thickness was 1 mm and 0.5 mm. The temperature sweep, frequency sweep, and multiple stress creep recovery tests were conducted to reveal the rheological properties of UV-aged neat asphalt. Moreover, the Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) tests were performed to reveal the microscopic properties of UV-aged asphalt. Regarding the constant-intensity UV-aged asphalt with 1 mm film thickness, the rutting parameter aging index (RPAI) of 9 cycles was smaller than that of RTFO-aged asphalt. The variableintensity UV aging induced a much larger aging effect than constant-intensity UV aging for UV-aged asphalt. The IS--O and IC--O under variable-intensity UV aging conditions is higher than constant-intensity UV aging for the same cycles. Besides, the asphalt thickness is an essential element affecting UV aging. The aging effect increased significantly as the film thickness decreased. SEM test results have indicated that the variable-intensity UV aging caused more microscopic morphology damage to asphalt than constant-intensity UV aging. Variableintensity UV aging test condition proposed in this study is more accurately simulate the real service conditions. It is meaningful to propose the variable-intensity UV aging process. This study provides new ideas for simulating UV aging conditions and methods in the laboratory.
期刊：
IEEE Transactions on Medical Imaging,2024年43(2):832-845 ISSN：0278-0062
作者机构：
[Xiaofei Huang; Hongfang Gong] School of Mathematics and Statistics, Changsha University of Science and Technology, Changsha, China
摘要：
Research in medical visual question answering (MVQA) can contribute to the development of computer-aided diagnosis. MVQA is a task that aims to predict accurate and convincing answers based on given medical images and associated natural language questions. This task requires extracting medical knowledge-rich feature content and making fine-grained understandings of them. Therefore, constructing an effective feature extraction and understanding scheme are keys to modeling. Existing MVQA question extraction schemes mainly focus on word information, ignoring medical information in the text, such as medical concepts and domain-specific terms. Meanwhile, some visual and textual feature understanding schemes cannot effectively capture the correlation between regions and keywords for reasonable visual reasoning. In this study, a dual-attention learning network with word and sentence embedding (DALNet-WSE) is proposed. We design a module, transformer with sentence embedding (TSE), to extract a double embedding representation of questions containing keywords and medical information. A dual-attention learning (DAL) module consisting of self-attention and guided attention is proposed to model intensive intramodal and intermodal interactions. With multiple DAL modules (DALs), learning visual and textual co-attention can increase the granularity of understanding and improve visual reasoning. Experimental results on the ImageCLEF 2019 VQA-MED (VQA-MED 2019) and VQA-RAD datasets demonstrate that our proposed method outperforms previous state-of-the-art methods. According to the ablation studies and Grad-CAM maps, DALNet-WSE can extract rich textual information and has strong visual reasoning ability.
摘要：
Accurate flood event simulation and prediction, enabled by effective models and reliable data, are critical for mitigating the potential risk of flood disaster. This study aims to investigate the impacts of spatiotemporal resolutions of precipitation on flood event simulation in a large-scale catchment of China. We use high-spatiotemporal-resolution Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG) products and a gauge-based product as precipitation forcing for hydrologic simulation. Three hydrological models (HBV, SWAT and DHSVM) and a data-driven model (long short-term memory (LSTM) network) are utilized for flood event simulation. Two calibration strategies are carried out, one of which targets matching of the flood events, with peak discharge exceeding 8600 m 3 s - 1 between January 2015 and December 2017, and the other one is the conventional strategy for matching the entire streamflow time series. The results indicate that the event-based calibration strategy improves the performance of flood event simulation compared with a conventional calibration strategy, except for DHSVM. Both hydrological models and LSTM yield better flood event simulation at a finer temporal resolution, especially in flood peak simulation. Furthermore, SWAT and DHSVM are less sensitive to the spatial resolutions of IMERG, while the performance of LSTM obtains improvement when degrading the spatial resolution of IMERG-L. Generally, LSTM outperforms the hydrological models in most flood events, which implies the usefulness of the deep learning algorithms for flood event simulation.
作者机构：
[Qichao Tian; Chi Ding; Xiaodong Qiu; Qinghao Meng; Kaili Wang; Fan Yu; Yuyang Mu] National Laboratory of Solid State Microstructure, School of Physics, Nanjing University, Nanjing, China;School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha, China;Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China;Hefei National Laboratory, Hefei, China;[Can Wang] National Laboratory of Solid State Microstructure, School of Physics, Nanjing University, Nanjing, China<&wdkj&>School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha, China
通讯机构：
[Yi Zhang] N;National Laboratory of Solid State Microstructure, School of Physics, Nanjing University, Nanjing, China<&wdkj&>Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China<&wdkj&>Hefei National Laboratory, Hefei, China
摘要：
Layered material TaS2 hosts multiple structural phases and exotic correlated quantum states, including charge density wave (CDW), superconductivity, quantum spin liquid, and Mott insulating state. Here, we synthesized TaS2 monolayers in H and T phases using the molecular beam epitaxial (MBE) method and studied their electronic structures via angle-resolved photo-emission spectroscopy (ARPES). We found that the H phase TaS2 (H-TaS2) monolayer is metallic, with an energy band crossing the Fermi level. In contrast, the T phase TaS2 (T-TaS2) monolayer shows an insulated energy gap at the Fermi level, while the normal calculated band structure implies it should be metallic without any band gap. However, by considering Hubbard interaction potential U, further density functional theory (DFT) calculation suggests that monolayer T-TaS2 could be a CDW Mott insulator, and the DFT+U calculation matches well with the ARPES result. More significantly, the temperature-dependent ARPES result indicates that the CDW Mott state in the T-TaS2 monolayer is more robust than its bulk counterpart and can persist at room temperature. Our results reveal that the dimensional effect can enhance the CDW Mott state and provide valuable insights for further exploring the exotic properties of monolayer TaS2.
作者机构：
[Li, Chuanchang; Ma, Huan; Xie, Baoshan; Chen, Jian; Li, CC] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Key Lab Renewable Energy Elect Technol Hunan Prov, Changsha 410114, Peoples R China.;[Li, Chuanchang; Xie, Baoshan; Chen, Jian; Li, CC] Changsha Univ Sci & Technol, State Key Lab Disaster Prevent & Reduct Power Grid, Changsha 410114, Peoples R China.
通讯机构：
[Li, CC ] C;Changsha Univ Sci & Technol, Sch Energy & Power Engn, Key Lab Renewable Energy Elect Technol Hunan Prov, Changsha 410114, Peoples R China.;Changsha Univ Sci & Technol, State Key Lab Disaster Prevent & Reduct Power Grid, Changsha 410114, Peoples R China.
关键词：
thermal energy storage;phase change material;stone coal;vanadium extraction;secondary utilization
摘要：
Phase change materials (PCMs) can be incorporated with low-cost minerals to synthesize composites for thermal energy storage in building applications. Stone coal (SC) after vanadium extraction treatment shows potential for secondary utilization in composite preparation. We prepared SC-based composite PCMs with SC as a matrix, stearic acid (SA) as a PCM, and expanded graphite (EG) as an additive. The combined roasting and acid leaching treatment of raw SC was conducted to understand the effect of vanadium extraction on promoting loading capacity. Results showed that the combined treatment of roasting at 900 degrees C and leaching increased the SC loading of the composite by 6.2% by improving the specific surface area. The loading capacity and thermal conductivity of the composite obviously increased by 127% and 48.19%, respectively, due to the contribution of 3wt% EG. These data were supported by the high load of 66.69% and thermal conductivity of 0.59 W center dot m-1 center dot K-1 of the designed composite. The obtained composite exhibited a phase change temperature of 52.17 degrees C, melting latent heat of 121.5 J center dot g-1, and good chemical compatibility. The SC-based composite has prospects in building applications exploiting the secondary utilization of minerals.
期刊：
Construction and Building Materials,2024年421:135758 ISSN：0950-0618
通讯作者：
Naitian Zhang
作者机构：
Key Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China;Xinjiang Key Laboratory of Green Construction and Smart Traffic Control of Transportation Infrastructure, Xinjiang University, Urumqi, Xinjiang 830017, China;Foshan Zhongce Expressway Investment Co., Ltd, Foshan, Guangdong 528000, China;[Guozhi Zheng; Songtao Lv] Key Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology,Changsha,Hunan 410114,China;[Naitian Zhang] Key Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology,Changsha,Hunan 410114,China<&wdkj&>Xinjiang Key Laboratory of Green Construction and Smart Traffic Control of Transportation Infrastructure, Xinjiang University,Urumqi,Xinjiang 830017,China
通讯机构：
[Naitian Zhang] K;Key Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha, Hunan 410114, China<&wdkj&>Xinjiang Key Laboratory of Green Construction and Smart Traffic Control of Transportation Infrastructure, Xinjiang University, Urumqi, Xinjiang 830017, China
摘要：
In the actual service process of asphalt pavement, the dynamic response of the pavement structure layer is induced by vehicle loads. The dynamic modulus is a crucial parameter for analyzing the mechanical response of asphalt pavement. Due to significant influences from temperature and loading frequency on test measurements, along with its time-temperature equivalence, it becomes imperative to investigate the behavior of dynamic modulus under different temperature frequencies. Furthermore, laboratory loading modes also exert substantial effects on dynamic modulus. Employing different loading modes during measurement often leads to significantly varied stress states in specimens, yielding distinct values for dynamic modulus. Therefore, this study conducts dynamic modulus tests using direct tension, uniaxial compression, and indirect tension under five test temperatures and six loading frequencies while examining its variations under different stress states and temperature frequencies. The corresponding master curves and prediction models of dynamic modulus are derived, providing a valuable reference for predicting the dynamic modulus under wide-area test conditions. Through comparative analysis of dynamic modulus values at different stress levels, the stress level is incorporated into the master curve to establish corresponding master curves of dynamic modulus. By applying relevant theories and research on time-temperature equivalence, we obtained dynamic modulus master curves for three loading modes by fitting and analyzing dynamic modulus test data at various temperatures and loading frequencies. Combining the Sigmoid model and Williams-Landel-Ferry(WLF) equation, we derived prediction models for dynamic modulus under three loading modes. Comparative analysis of dynamic modulus values under these three loading modes allowed us to establish transformation equations for the prediction models in different loading scenarios. Finally, representative dynamic modulus values for permanent deformation in typical pavement structure layers were predicted based on laboratory test results and the derived models. The research findings presented in this paper have significant implications in eliminating the influence of loading modes on dynamic modulus predictions, establishing a unified prediction model, and providing essential parameters for predicting permanent deformation and fatigue life equivalent temperature.
期刊：
LETTERS IN DRUG DESIGN & DISCOVERY,2024年21(3):496-503 ISSN：1570-1808
通讯作者：
Huang, PM;Liu, JY
作者机构：
[Wu, Minghui; Huang, Pengmian; Liu, Xiangwei] Changsha Univ Sci & Technol, Sch Chem & Chem Engn, Changsha 410114, Peoples R China.;[Liu, Jiyong; Liu, Minhua; Zhou, Liqi] Shanghai Int Trading Co Ltd, Shanghai 200335, Peoples R China.
通讯机构：
[Huang, PM ] C;[Liu, JY ] S;Changsha Univ Sci & Technol, Sch Chem & Chem Engn, Changsha 410114, Peoples R China.;Shanghai Int Trading Co Ltd, Shanghai 200335, Peoples R China.
关键词：
Thioether and oxide sulfide-containing diamide;insecticidal activity;structure-activity relationship;cyproflanilide;chlorantraniliprole;gamma-aminobutyric acid (GABA)
摘要：
Background: With the emerging resistance to mainstream insecticides, it is necessary to develop new insecticides to tackle the problem of pest threat. Diamide insecticides are widely studied because of their broad spectrum of activities, high efficiency, and low toxicity. Most thioether and oxide sulfide-containing compounds have a wide range of biological activities in agricultural chemicals.<&wdkj&>Objective: The main purpose of the study was to explore novel thioether and oxide sulfide-containing diamide compounds possessing outstanding insecticidal activity.<&wdkj&>Methods: Based on the “active substructure replacing” method by introducing methylthio groups, 29 sulfide-containing diamide compounds were designed and synthesised. The structures of all synthetic compounds were confirmed by 1H-NMR, 13C-NMR and HRMS. Moreover, the biological activities of all the compounds were tested.<&wdkj&>Results: The preliminary bioassay indicated that most of the new compounds did not exhibit better activity than the reference insecticide cyproflanilide. However, compounds 18a and 23a showed markedly potent activity against Tetranychus cinnabarinus at 100 mg/L, which was better than cyproflanilide since these compounds possessed 2-methyl-4-cyanophenyl, which might be the reason for their better internal absorption in the plant.<&wdkj&>Conclusion: The structure-activity relationship showed that some compounds were of potential value to be developed as novel insecticides, but the majority of compounds did not show superior insecticidal activity than cyproflanilide.
关键词：
Ou, Yu-Chen;Asphalt pavement;thermal-reflective coating;Urban heat island effect;cooling effect
摘要：
Asphalt pavements are generally more susceptible to rutting under high temperatures, which can be further exacerbated by prolonged solar exposure and thermal absorption. The continuous thermal radiation from the asphalt pavement could aggravate the urban heat island effect and negatively impact urban life. To address this problem, this study was conducted to develop and evaluate a thermal-reflective coating material that minimizes thermal absorption and enhances the cooling effects of asphalt pavements. As documented herein, three pigment fillers were comparatively assessed in terms of their ability to enhance thermal reflectance, namely Hollow Glass Beads (HGB), Rutile Titanium Dioxide (RTD), and Potassium Titanate Whiskers (PTW). Acrylic resin (AR) and epoxy resin (ER) served as the base binding materials, while Polyamide acted as the curing agent. The performance of these materials was analyzed through various tests, including tensile strength, indoor cooling simulation, outdoor (field) cooling, and Differential Scanning Calorimetry (DSC)measurements. The corresponding results indicated that the optimum composition for the coating materials consist of: (1) base materials (namely 50% AR and 50% ER); (2) pigment fillers (namely 25% HGB, 20% RTD, and 15% PTW); and (3) curing agent (namely 40% Polyamide), with 2 mm as the optimum coating thickness to minimize thermal absorption.
摘要：
Abstract: This paper is dedicated to the study of a class of tumor immune models with threshold control strategies. The Filippov theory was used to analyze the sliding mode dynamics and global dynamics. It is found that the dynamic behavior of the system changes with the change of thresholds, including the boundary focus branch.#@#@#摘要: 本文致力于研究一类具有阈值控制策略的肿瘤免疫模型。利用Filippov理论分析了滑模动力学和全局动力学。 研究发现，系统的动力学行为随着阁值的改变而改变，包括边界焦点分支。
期刊：
Journal of Hazardous Materials,2024年469:134022 ISSN：0304-3894
通讯作者：
Xue, Wenjing
作者机构：
[Lin, Weilong; Liu, Hongdou; Wen, Siqi; He, Qi; Shi, Xiaoyu; Xu, Yiqun; Guo, Jiaming] College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, PR China;[Gao, Yang] School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China;[Wang, Rongzhong] School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, PR China;[Xue, Wenjing] College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, PR China. Electronic address: xuewenjing@yzu.edu.cn
通讯机构：
[Xue, Wenjing] C;College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, PR China. Electronic address:
关键词：
Bacterial community;Cadmium;Precursor;Sediment;Sulfidized nanoscale zero-valent iron
摘要：
Sulfidized nanoscale zero-valent iron (S-nZVI) showed excellent removal capacity for cadmium (Cd) in aqueous phase. However, the remediation effects of S-nZVI on Cd-contaminated sediment and its interactions with microorganisms in relation to Cd fate remain unclear. The complexity of the external environment posed a challenge for Cd remediation. This study synthesized S-nZVI with different S and Fe precursors to investigate the effect of precursors and applied the optimal material to immobilize Cd in sediments. Characterization analysis revealed that the precursor affected the morphology, Fe(0) crystallinity, and the degree of oxidation of the material. Incubation experiments demonstrated that the immobilization efficiency of Cd using S-nZVI(Fe)(3+)(+S)(2-) (S/Fe = 0.14) reached the peak value of 99.54%. 1% and 5% dosages of S-nZVI significantly reduced Cd concentration in the overlying water, DTPA-extractable Cd content, and exchangeable (EX) Cd speciation (P<0.05). Cd leaching in sediment and total iron in the overlying water remained at low levels during 90 d of incubation. Notably, each treatment maintained a high Cd immobilization efficiency under different pH, water/sediment ratio, organic acid, and coexisting ion conditions. Sediment physicochemical properties, functional bacteria, and a range of adsorption, complexation and precipitation of CdS effects dominated Cd immobilization.
摘要：
The controller design for integrated electrohydraulic suspension with leaf spring is a complicated and challenging task, aiming to achieve optimal dynamic performance for heavy vehicles. Considering the hysteresis property of leaf spring, parameter uncertainties and nonlinearity, a novel hierarchical optimization control strategy including upper and bottom controllers is proposed to effectively suppress the vertical vibration of vehicle body. To describe the hysteresis property of leaf spring, a novel resistor-capacitor operator hysteresis model is identified by experiment and optimized by genetic algorithm. Based on hysteresis model, the filter adaptive backstepping control with sprung mass uncertainty is designed as upper controller to generate the desired active force for electrohydraulic actuator. Then, the projection adaptive fuzzy sliding mode control is designed as bottom controller for nonlinear actuator with time-varying fluid parameter to accurately track the required target force. Additionally, a stratified sampling algorithm is investigated to optimize the parameters of hierarchical control strategy for addressing multi-objective optimization issue of electrohydraulic suspension with leaf spring. Finally, the results show that the proposed method has better robustness and effectiveness, and it can ensure ride comfort, safety and optimal performance.
摘要：
We consider the Alternating Direction Implicit (ADI) method to compute the numerical solution of a continuous Sylvester equation
$$AX+XB=C$$
, based on the recently developed inexact ADI iteration, and we propose classical acceleration techniques to enhance its convergence rate. An extrapolated variant (EADI) and a block successive overrelaxation variant (block SOR-ADI) of the ADI iterative method are described. These relaxation approaches are similar to what is used in Gauss-Seidel and Jacobi methods for linear systems, and, to our knowledge, novel, especially the block SOR-ADI scheme. Convergence properties of these two relaxed variants are analyzed when the matrix A is positive definite and the matrix B is positive semi-definite (not necessarily Hermitian matrices), or conversely. Our numerical experiments suggest that these new schemes are computationally attractive. The convergence rate of the ADI method is usually increased, particularly with the block SOR-ADI variant. A comparison with the well-known Hermitian and skew-Hermitian splitting (HSS) method emphasizes the efficiency of the proposed methods.
关键词：
Entrepreneurial networks;Causation;Effectuation;Business model innovation;Environmental dynamism;Resource orchestration
摘要：
Purpose
Although it is acknowledged that entrepreneurial networks play a crucial role in fostering business model innovation (BMI) for start-ups, it is unclear how and when these networks affect BMI. This research developed a moderated mediation model to explore the impact of entrepreneurial networks on BMI in start-ups and examined the dual mediating effects of causation and effectuation, as well as the moderation of environmental dynamism.
Design/methodology/approach
The proposed framework was tested by hierarchical regression analyses and bootstrapping using samples of 248 start-ups in China.
Findings
The results showed that entrepreneurial networks significantly positively impacted start-up BMI. Causation and effectuation played dual mediating roles between entrepreneurial networks and BMI. Furthermore, the entrepreneurial networks-effectuation-BMI association was more substantial in highly dynamic environments, whereas the entrepreneurial networks-causation-BMI relationship was unaffected.
Research limitations/implications
There are several theoretical contributions resulting from this research. The findings offer new insights for understanding the antecedents of start-up BMI from the network perspective. This research adds to the growing literature on resource orchestration (RO) by exploring the dual mediating influences of causation and effectuation in resource management. This investigation revealed the boundary condition between entrepreneurial networks and BMI by testing the moderating influence of environmental dynamism.
Practical implications
Start-ups must effectively use external resources embedded within networks to advance BMI. Start-up entrepreneurs should apply causation and effectuation to transform entrepreneurial network resources into BMI. Start-up entrepreneurs must dynamically manage resources in response to ever-changing environmental conditions. Resource acquisition and management of entrepreneurial networks can vary significantly in their influence on start-up BMI under different environmental contexts.
Originality/value
Unlike previous BMI research focused on internal organizational factors, this study highlighted the critical importance of entrepreneurial networks as a prerequisite for achieving start-up BMI, contributing to the literature on open innovation and resource-based view. Examining the dual mediating roles of causation and effectuation illustrated the bridging role of strategic decision-making logic in connecting resources to value creation, contributing to the developing RO literature. The moderating influence of environmental dynamism was explored, clarifying how start-up BMI benefits from entrepreneurial networks in differing situations. A framework for reconciling contradictory findings concerning the association between entrepreneurial networks and innovation is provided.
通讯机构：
[Hu, C ] C;Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Key Lab Rd Struct & Mat Transportat Minist, Changsha 410114, Hunan, Peoples R China.
关键词：
Red mud;Manganese slag;Compound;Grey correlation theory;Modification mechanism;Molecular simulation
摘要：
In order to promote the virtuous cycle of economic society, minimize the harm of red mud and manganese slag and maximize the efficiency of processing and utilization of red mud and manganese slag; in order to analyze the influence of red mud and manganese slag on the performance of matrix asphalt, this paper conducts multiple groups of compound proportion tests after fully mixing red mud and manganese slag, and finally determines the optimal compound proportion of 1:1.5. The red mud manganese slag compound modified asphalt binder was prepared by adding the powder-oil ratio of 0, 3%, 6%, 9%, 12%, 15%, 18%, 21% and 24% to the matrix asphalt by the external mixing method. Through the determination of three indexes of modified asphalt binder, the modification effect of different dosage on matrix asphalt is analyzed. From a large number of experimental data, it is concluded that when the mixing ratio is 15%, the three indexes of modified asphalt binder are the best. In this paper, the grey correlation theory is used to analyze the correlation between the dosage of the compound modifier and the penetration, ductility and softening point of the matrix asphalt. It is concluded that the addition of the compound modifier has the most obvious influence on the penetration at 10 degrees C, followed by the penetration at 20 degrees C, the softening point, the penetration at 25 degrees C, the penetration at 30 degrees C, the penetration at 15 degrees C, the delay at 5 degrees C and the delay at 15 degrees C. The adsorption process of red mud compound manganese slag and asphalt was qualitatively simulated by molecular dynamics theory, and the interaction energy between red mud compound manganese slag modified asphalt binder and matrix asphalt was quantitatively calculated, and the modification mechanism of modified asphalt was analyzed.
作者机构：
[Zhenzhou Jin; Xin Ye] School of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, China;[Jiangang He] Hunan Renjian Baogu High-Tech Development Co., Changsha 410114, China;Author to whom correspondence should be addressed.;[Guangyao Li; Chao Wang; Xuemei Huang] School of Transportation Engineering, Changsha University of Science and Technology, Changsha 410114, China;[Weijun Yang] School of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, China<&wdkj&>Hunan Renjian Baogu High-Tech Development Co., Changsha 410114, China
通讯机构：
[Jianyu Yang] S;School of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
The huge demand for sand and gravel resources in road engineering construction leads to excessive consumption of resources and environmental damage. Recycling waste concrete and industrial solid waste as a road material is a promising alternative. In order to explore the application of these solid wastes in the road base, this paper studies the effect of adding lithium slag activated by an alkaline activator, fly ash (FA) and a combination of the two on the compressive strength, splitting strength and shrinkage performance of recycled cement-stabilized macadam mixture (RCSM). The optimum content of recycled aggregate (RA), alkali-activated lithium slag (AALS) and FA in composite-improved RCSM was optimized using a response surface method (Box–Behnken), and the microscopic characteristics of the mixture were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that the optimum dosage of AALS, FA and RA determined by the response surface method is 15%, 10% and 40%, respectively. Compared with the cement-stabilized macadam mixture (CSM) with 40% RA, the 28 d compressive strength and 28 d splitting strength of the composite-improved RCSM are increased by 26.8% and 22.9%, respectively, and the dry shrinkage coefficient and average temperature shrinkage coefficient are decreased by 25.8% and 14.8%, respectively. Microscopic tests show that AALS and FA participate in the hydration reaction, generate more hydrated silicate (C-S-H) and ettringite (AFt), refine pores, effectively improve the performance of the internal interface transition zone of the mixture, make the microstructure of the mixture denser, and improve the strength and shrinkage performance of RCSM. This study provides technical support for the reuse of resources and the sustainable development of road construction.
摘要：
Pigeon eggs have been used as a valuable source of high-quality proteins, which play a crucial role to regulate metabolism, immunity, and other physiological functions in humans. However, the specific composition and function of pigeon egg proteins remain underexplored. In this study, a comprehensive into the common proteome and modified proteins (phosphorylated proteins and N-glycosylated proteins) of whole pigeon eggs was carried out using proteomics. The results showed that a total of 189 proteins were identified, including 27 phosphorylated proteins (containing 90 phosphorylation modification sites) and 73 N-glycosylated proteins (containing 203 N-glycosylation modification sites). Motif analysis indicated that serine (Ser) accounted for 72.6% of the phosphorylation events, while the sequence "N-X-T" emerged as the predominant motif for N-glycosylation, representing 58.7% of such modifications. Functional enrichment analysis further demonstrated that the majority of pigeon egg proteins, modified proteins were involved in binding and catalytic activities and contributed to enzyme activity regulation and inhibition. Pigeon egg proteins were predominantly associated with the lysosomal pathway, as outlined in the KEGG database. This study could pave the way for the development of innovative food products and nutritional interventions based on pigeon egg proteins.
