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Authors = Chenhui Ding

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16 pages, 13475 KiB  
Article
Low Thermal Stress and Instant Efficient Atomization of Narrow Viscous Microfluid Film Using a Paper Strip Located at the Edge of a Surface Acoustic Wave Atomizer
by Yulin Lei, Yusong Li, Jia Ning, Yu Gu, Chenhui Gai, Qinghe Ma, Yizhan Ding, Benzheng Wang and Hong Hu
Micromachines 2025, 16(6), 628; https://doi.org/10.3390/mi16060628 - 27 May 2025
Viewed by 423
Abstract
A traditional SAW (surface acoustic wave) atomizer directly supplies liquid to the surface of the atomized chip through a paper strip located in the path of the acoustic beam, resulting in irregular distribution of the liquid film, which generates an aerosol with an [...] Read more.
A traditional SAW (surface acoustic wave) atomizer directly supplies liquid to the surface of the atomized chip through a paper strip located in the path of the acoustic beam, resulting in irregular distribution of the liquid film, which generates an aerosol with an uneven particle size distribution and poor directional controllability, and a high heating phenomenon that can easily break the chip in the atomization process. This paper presents a novel atomization method: a paper strip located at the edge of the atomizer (PSLEA), which forms a micron-sized narrow liquid film at the junction of the atomization chip edge and the paper strip under the effect of acoustic wetting. By using this method, physical separation of the atomized aerosol and jetting droplets can be achieved at the initial stage of atomizer startup, and an ideal aerosol plume with no jetting of large droplets, a uniform particle size distribution, a vertical and stable atomization direction, and good convergence of the aerosol beam can be quickly formed. Furthermore, the effects of the input power, and different paper strips and liquid supply methods on the atomization performance, as well as the heating generation capacity of the liquid in the atomization zone during the atomization process were explored through a large number of experiments, which highlighted the advantages of PSLEA atomization. The experiments demonstrated that the maximum atomization rate under the PSLEA atomization mode reached 2.6 mL/min initially, and the maximum thermal stress was 45% lower compared with that in the traditional mode. Additionally, a portable handheld atomizer with stable atomization performance and a median aerosol particle size of 3.95 μm was designed based on the proposed PSLEA atomization method, showing the great potential of SAW atomizers in treating respiratory diseases. Full article
(This article belongs to the Special Issue Novel Surface and Bulk Acoustic Wave Devices)
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14 pages, 4714 KiB  
Article
Investigating the Physical Adsorption of DCPD/Furfural and H2 Adsorption–Dissociation Behaviors in RE-MOFs
by Muye Niu, Zuoshuai Xi, Chenhui He, Wenting Ding, Shanshan Cheng, Juntao Zhang and Hongyi Gao
Molecules 2025, 30(9), 1954; https://doi.org/10.3390/molecules30091954 - 28 Apr 2025
Viewed by 366
Abstract
Metal–organic frameworks (MOFs) have emerged as promising catalysts in the hydrogenation of bicyclopentadiene (DCPD) and furfural. The physical adsorption behaviors of substrate molecules and H2 within the pore structures of MOFs significantly influence the efficacy of subsequent catalytic reactions. This study employs [...] Read more.
Metal–organic frameworks (MOFs) have emerged as promising catalysts in the hydrogenation of bicyclopentadiene (DCPD) and furfural. The physical adsorption behaviors of substrate molecules and H2 within the pore structures of MOFs significantly influence the efficacy of subsequent catalytic reactions. This study employs molecular dynamics (MD) simulations to identify the optimal temperature and pressure conditions for the adsorption of DCPD and H2, as well as furfural and H2, within rare-earth-element-based MOFs (RE-MOFs). By analyzing the physical adsorption characteristics of 1538 RE-MOFs, we investigate the correlation between pore structures and adsorption capabilities. This exploration has led to the identification of 10 RE-MOF structures that demonstrate superior physical adsorption performance for both DCPD and furfural. Following this initial evaluation, density functional theory (DFT) calculations were conducted to determine the chemisorption energies of H2 molecules on these 10 selected RE-MOF structures. Notably, the structure identified as “JALLEQ_clean” exhibited the most optimal overall adsorption performance. This study elucidates the quantitative relationship between the pore structure of RE-MOFs and their physical adsorption performance, clarifying the influence of porosity parameters on adsorption capacity and highlighting the advantages of cluster-type structures in mass transfer and adsorption. The findings provide theoretical guidance for developing high-performance RE-MOF catalysts and offer new insights for the rational design of MOF-based catalytic materials. Full article
(This article belongs to the Special Issue Inorganic Chemistry in Asia)
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17 pages, 527 KiB  
Article
The Impact of Carbon Trading Policy on the Green Innovation Efficiency of Enterprises: Evidence from China
by Shuwen Zhang, Chenhui Ding and Chao Liu
Sustainability 2024, 16(24), 11192; https://doi.org/10.3390/su162411192 - 20 Dec 2024
Viewed by 1597
Abstract
Improving green innovation efficiency (GIE) is crucial for reducing enterprise carbon emissions and fostering enterprise sustainability. Meanwhile. most of the research has not considered the micro-level influence of carbon trading on GIE. Therefore, the research objective of this paper is to assess the [...] Read more.
Improving green innovation efficiency (GIE) is crucial for reducing enterprise carbon emissions and fostering enterprise sustainability. Meanwhile. most of the research has not considered the micro-level influence of carbon trading on GIE. Therefore, the research objective of this paper is to assess the impact of carbon trading policy (CTP) on the GIE of enterprises and its specific mechanism. This paper uses data from China’s listed enterprises from 2010 to 2019 and treats the 2013 CTP in seven regions as a quasi-natural experiment. The Super-SBM model is applied to calculate the GIE. The difference-in-difference-in-differences (DDD) method assesses policy impact by comparing pre- and post-policy efficiencies. The results reveal that CTP improves the GIE of enterprises in high-carbon emission sectors in pilot areas. It primarily boosts GIE by increasing the environmental attention and resource allocation efficiency of enterprises. CTP significantly promotes the GIE of non-state-owned enterprises (non-SOEs), large-scale enterprises, and enterprises in regions with strict environmental regulations. Finally, policy recommendations are made for more environmentally friendly and sustainable enterprise development. Full article
(This article belongs to the Topic Low Carbon Economy and Sustainable Development)
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27 pages, 1098 KiB  
Article
The Nonlinear Effects of Digital Finance on Corporate ESG Performance: Evidence from China
by Qingmin Yin, Nan Su and Chenhui Ding
Sustainability 2024, 16(18), 8274; https://doi.org/10.3390/su16188274 - 23 Sep 2024
Cited by 2 | Viewed by 3650
Abstract
Digital finance enhances corporate ESG performance and is essential for achieving sustainable development; however, its consistent effectiveness in improving ESG outcomes remains contested. Using panel data from A-share listed companies on the Shanghai and Shenzhen stock exchanges in China from 2011 to 2021, [...] Read more.
Digital finance enhances corporate ESG performance and is essential for achieving sustainable development; however, its consistent effectiveness in improving ESG outcomes remains contested. Using panel data from A-share listed companies on the Shanghai and Shenzhen stock exchanges in China from 2011 to 2021, this study empirically examines nonlinear effects, transmission mechanisms, and moderating factors. The results indicate a U-shaped relationship between digital finance and ESG performance, with a positive impact becoming apparent when digital finance exceeds the threshold of 3.81. Mechanism tests reveal that green technological innovation and public environmental attention are crucial transmission channels for the nonlinear effects. Furthermore, financial regulation levels and environmental uncertainty negatively moderate this relationship, while corporate digital transformation has a positive moderating effect. Further analysis shows that the U-shaped relationship is more pronounced in areas with lesser financial advancement and higher levels of environmental regulation, as well as in non-high-tech industries, non-manufacturing sectors, smaller firms, and companies without political connections. This study provides empirical evidence and policy insights to support the promotion of financial services that better facilitate corporate sustainability. Full article
(This article belongs to the Section Economic and Business Aspects of Sustainability)
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11 pages, 2264 KiB  
Article
Development of Highly Efficient Lamb Wave Transducers toward Dual-Surface Simultaneous Atomization
by Chenhui Gai, Qinghe Ma, Jia Ning, Yizhan Ding, Yulin Lei, Honggeng Li, Chunhua Guo and Hong Hu
Sensors 2024, 24(17), 5607; https://doi.org/10.3390/s24175607 - 29 Aug 2024
Viewed by 1075
Abstract
Highly efficient surface acoustic wave (SAW) transducers offer significant advantages for microfluidic atomization. Aiming at highly efficient atomization, we innovatively accomplish dual-surface simultaneous atomization by strategically positioning the liquid supply outside the IDT aperture edge. Initially, we optimize Lamb wave transducers and specifically [...] Read more.
Highly efficient surface acoustic wave (SAW) transducers offer significant advantages for microfluidic atomization. Aiming at highly efficient atomization, we innovatively accomplish dual-surface simultaneous atomization by strategically positioning the liquid supply outside the IDT aperture edge. Initially, we optimize Lamb wave transducers and specifically investigate their performance based on the ratio of substrate thickness to acoustic wavelength. When this ratio h/λ is approximately 1.25, the electromechanical coupling coefficient of A0-mode Lamb waves can reach around 5.5% for 128° Y-X LiNbO3. We then study the mechanism of droplet atomization with the liquid supply positioned outside the IDT aperture edge. Experimental results demonstrate that optimized Lamb wave transducers exhibit clear dual-surface simultaneous atomization. These transducers provide equivalent amplitude acoustic wave vibrations on both surfaces, causing the liquid thin film to accumulate at the edges of the dual-surface and form a continuous mist. Full article
(This article belongs to the Special Issue Exploring the Sensing Potential of Acoustic Wave Devices)
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21 pages, 16282 KiB  
Article
Research on Calculation Method of On-Orbit Instrumental Line Shape Function for the Greenhouse Gases Monitoring Instrument on the GaoFen-5B Satellite
by Yunfei Han, Hailiang Shi, Haiyan Luo, Zhiwei Li, Hanhan Ye, Chao Li, Yi Ding, Shichao Wu, Xianhua Wang, Wei Xiong and Chenhui Hou
Remote Sens. 2024, 16(12), 2171; https://doi.org/10.3390/rs16122171 - 15 Jun 2024
Viewed by 1051
Abstract
The Greenhouse Gases Monitoring Instrument is based on the spectroscopic principle of spatial heterodyne spectroscopy technology and has the characteristics of no moving parts, a hyperspectral resolution, and a large luminous flux. The instrumental line shape function is one of the most important [...] Read more.
The Greenhouse Gases Monitoring Instrument is based on the spectroscopic principle of spatial heterodyne spectroscopy technology and has the characteristics of no moving parts, a hyperspectral resolution, and a large luminous flux. The instrumental line shape function is one of the most important parameters characterizing the features of the instrument, and it plays a vital role in the system error analysis of the instrument’s measurements. To accurately obtain the instrumental line shape function of a spatial heterodyne spectrometer during the on-orbit period and improve the accuracy of gas concentration retrieval, this study develops a method to model and characterize the characteristics of the instrumental line shape function, including modulation loss and phase error. This study employs the solar calibration spectrum in the 1.568–1.583 μm bands to conduct iterative calculations of the instrumental line shape function error model. After the instrumental line function is updated, the average relative deviation is reduced from 1.83% to 0.756% between the theoretical and measured solar spectra. Additionally, the average relative deviation is reduced from 7.049% to 2.106% between the GMI nadir and theoretical nadir spectra. The findings demonstrate that updating the instrumental line shape function mitigates the impact of variations in the spectrometer’s instrumental line shape due to alterations in the orbital environment. This study offers a dependable reference for both the enhancement and oversight of a spectrometer’s instrumental line shape function, along with an investigation of shifts in instrument parameters. Full article
(This article belongs to the Special Issue Remote Sensing Satellites Calibration and Validation)
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12 pages, 9954 KiB  
Article
Amino-Modified Graphene Oxide from Kish Graphite for Enhancing Corrosion Resistance of Waterborne Epoxy Coatings
by Shengle Hao, Siming Wan, Shiyu Hou, Bowen Yuan, Chenhui Luan, Ding Nan, Gen Huang, Deping Xu and Zheng-Hong Huang
Materials 2024, 17(5), 1220; https://doi.org/10.3390/ma17051220 - 6 Mar 2024
Cited by 1 | Viewed by 1663
Abstract
Waterborne epoxy (WEP) coatings with enhanced corrosion resistance were prepared using graphene oxide (GO) that was obtained from kish graphite, and amino-functionalized graphene oxide (AGO) was modified by 2-aminomalonamide. The structural characteristics of the GO and AGO were analyzed using X-ray diffraction (XRD), [...] Read more.
Waterborne epoxy (WEP) coatings with enhanced corrosion resistance were prepared using graphene oxide (GO) that was obtained from kish graphite, and amino-functionalized graphene oxide (AGO) was modified by 2-aminomalonamide. The structural characteristics of the GO and AGO were analyzed using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). And the anti-corrosive performance of waterborne epoxy-cased composite coatings with different addition amounts of AGO was investigated using electrochemical measurements, pull-off adhesion tests, and salt spray tests. The results indicate that AGO15/WEP with 0.15 wt.% of AGO has the best anti-corrosive performance, and the lowest frequency impedance modulus increased from 1.03 × 108 to 1.63 × 1010 ohm·cm−2 compared to that of WEP. Furthermore, AGO15/WEP also demonstrates the minimal corrosion products or bubbles in the salt spray test for 200 h, affirming its exceptional long-term corrosion protection capability. Full article
(This article belongs to the Section Carbon Materials)
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27 pages, 3039 KiB  
Review
Advancements and Prospects of Genome-Wide Association Studies (GWAS) in Maize
by Javed Hussain Sahito, Hao Zhang, Zeeshan Ghulam Nabi Gishkori, Chenhui Ma, Zhihao Wang, Dong Ding, Xuehai Zhang and Jihua Tang
Int. J. Mol. Sci. 2024, 25(3), 1918; https://doi.org/10.3390/ijms25031918 - 5 Feb 2024
Cited by 35 | Viewed by 10255
Abstract
Genome-wide association studies (GWAS) have emerged as a powerful tool for unraveling intricate genotype–phenotype association across various species. Maize (Zea mays L.), renowned for its extensive genetic diversity and rapid linkage disequilibrium (LD), stands as an exemplary candidate for GWAS. In maize, [...] Read more.
Genome-wide association studies (GWAS) have emerged as a powerful tool for unraveling intricate genotype–phenotype association across various species. Maize (Zea mays L.), renowned for its extensive genetic diversity and rapid linkage disequilibrium (LD), stands as an exemplary candidate for GWAS. In maize, GWAS has made significant advancements by pinpointing numerous genetic loci and potential genes associated with complex traits, including responses to both abiotic and biotic stress. These discoveries hold the promise of enhancing adaptability and yield through effective breeding strategies. Nevertheless, the impact of environmental stress on crop growth and yield is evident in various agronomic traits. Therefore, understanding the complex genetic basis of these traits becomes paramount. This review delves into current and future prospectives aimed at yield, quality, and environmental stress resilience in maize and also addresses the challenges encountered during genomic selection and molecular breeding, all facilitated by the utilization of GWAS. Furthermore, the integration of omics, including genomics, transcriptomics, proteomics, metabolomics, epigenomics, and phenomics has enriched our understanding of intricate traits in maize, thereby enhancing environmental stress tolerance and boosting maize production. Collectively, these insights not only advance our understanding of the genetic mechanism regulating complex traits but also propel the utilization of marker-assisted selection in maize molecular breeding programs, where GWAS plays a pivotal role. Therefore, GWAS provides robust support for delving into the genetic mechanism underlying complex traits in maize and enhancing breeding strategies. Full article
(This article belongs to the Section Molecular Plant Sciences)
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16 pages, 18488 KiB  
Article
Detection of the Corn Kernel Breakage Rate Based on an Improved Mask Region-Based Convolutional Neural Network
by Hongmei Zhang, Zhijie Li, Zishang Yang, Chenhui Zhu, Yinhai Ding, Pengchang Li and Xun He
Agriculture 2023, 13(12), 2257; https://doi.org/10.3390/agriculture13122257 - 10 Dec 2023
Cited by 5 | Viewed by 1667
Abstract
Real-time knowledge of kernel breakage during corn harvesting plays a significant role in the adjustment of operational parameters of corn kernel harvesters. (1) Transfer learning by initializing the DenseNet121 network with pre-trained weights for training and validating a dataset of corn kernels was [...] Read more.
Real-time knowledge of kernel breakage during corn harvesting plays a significant role in the adjustment of operational parameters of corn kernel harvesters. (1) Transfer learning by initializing the DenseNet121 network with pre-trained weights for training and validating a dataset of corn kernels was adopted. Additionally, the feature extraction capability of DenseNet121 was improved by incorporating the attention mechanism of a Convolutional Block Attention Module (CBAM) and a Feature Pyramid Network (FPN) structure. (2) The quality of intact and broken corn kernels and their pixels were found to be coupled, and a linear regression model was established using the least squares method. The results of the test showed that: (1) The MAPb50 and MAPm50 of the improved Mask Region-based Convolutional Neural Network (RCNN) model were 97.62% and 98.70%, in comparison to the original Mask Region-based Convolutional Neural Network (RCNN) model, which were improved by 0.34% and 0.37%, respectively; the backbone FLOPs and Params were 3.09 GMac and 9.31 M, and the feature extraction time was 206 ms; compared to the original backbone, these were reduced by 3.87 GMac and 17.32 M, respectively. The training of the obtained prediction weights for the detection of a picture of the corn kernel took 76 ms, so compared to the Mask RCNN model, it was reduced by 375 ms; based on the concept of transfer learning, the improved Mask RCNN model converged twice as quickly with the loss function using pre-training weights than the loss function without pre-training weights during training. (2) The coefficients of determination R2 of the two models, when the regression models of the pixels and the quality of intact and broken corn kernels were analyzed, were 0.958 and 0.992, respectively. These findings indicate a strong correlation between the pixel characteristics and the quality of corn kernels. The improved Mask RCNN model was used to segment mask pixels to calculate the corn kernel breakage rate. The verified error between the machine vision and the real breakage rate ranged from −0.72% to 0.65%, and the detection time of the corn kernel breakage rate was only 76 ms, which could meet the requirements for real-time detection. According to the test results, the improved Mask RCNN method had the advantages of a fast detection speed and high accuracy, and can be used as a data basis for adjusting the operation parameters of corn kernel harvesters. Full article
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17 pages, 9513 KiB  
Article
Analysis of the Effect of Ultra-Fine Cement on the Microscopic Pore Structure of Cement Soil in a Peat Soil Environment
by Jing Cao, Chenhui Huang, Huafeng Sun, Yongfa Guo, Wenyun Ding and Guofeng Hua
Appl. Sci. 2023, 13(23), 12700; https://doi.org/10.3390/app132312700 - 27 Nov 2023
Cited by 1 | Viewed by 1466
Abstract
Treating peat soil foundations around Dianchi Lake and Erhai Lake in Yunnan is a complex problem in practical engineering projects. Peat soil solely reinforced with ordinary cement (OPC) does not satisfy demand. This study aims to solidify soil to achieve better mechanical properties. [...] Read more.
Treating peat soil foundations around Dianchi Lake and Erhai Lake in Yunnan is a complex problem in practical engineering projects. Peat soil solely reinforced with ordinary cement (OPC) does not satisfy demand. This study aims to solidify soil to achieve better mechanical properties. The preparation of peat soil incorporates a humic acid (HA) reagent into cohesive soil, and cement and ultra-fine cement (UFC) are mixed by stirring to prepare cement soil samples. They are then immersed in fulvic acid (FA) solution to simulate cement soil in the actual environment. X-ray diffraction (XRD), mercury intrusion porosimetry (MIP), scanning electron microscopy (SEM), and pores and cracks analysis system (PCAS) tests are used to study the impact of the UFC on the microscopic pore structure of cement soil in a peat soil environment. The unconfined compressive strength (UCS) test is used for verification. The microscopic test results indicate that incorporating UFC enhances the specimen’s micropore structure. The XRD test results show the presence of C–S–H, C–A–S–H, and C–A–H. SEM and PCAS tests show that the UFC proportion increases by between 0% and 10%, and the percentage reduction in the macropore volume is the largest, at 38.84%. When the UFC admixture is 30%, the cumulative reduction in the percentage of macropore volume reaches 71.55%. The MIP test results show that the cumulative volume greater than 10 µm in pore size decreases from 7.68% to 0.17% with an increase in the UFC proportion. The UCS test results show that the maximum strength growth of cement soil is 12.99% when the UFC admixture is 0–10%. Incorporating UFC to form a compound curing agent solves the problem of the traditional reinforcement treatment of peat soil foundation being undesirable and decreases the amount of cement. This study provides practical guidance for reducing carbon emissions in actual projects. Full article
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17 pages, 1111 KiB  
Article
The Bilateral Effects of Population Aging on Regional Carbon Emissions in China: Promotion or Inhibition Effect?
by Xin Zhang, Chenhui Ding, Chao Liu, Xianzhong Teng, Ruoman Lv and Yiming Cai
Sustainability 2023, 15(23), 16165; https://doi.org/10.3390/su152316165 - 21 Nov 2023
Cited by 1 | Viewed by 1512
Abstract
To achieve the high-quality model of green, low-carbon, and sustainable development in China, it is necessary to clarify the relationship between population aging and carbon emissions in regions. Based on the panel data of 30 provinces and cities in China from 2011 to [...] Read more.
To achieve the high-quality model of green, low-carbon, and sustainable development in China, it is necessary to clarify the relationship between population aging and carbon emissions in regions. Based on the panel data of 30 provinces and cities in China from 2011 to 2020, this article employs a bilateral stochastic frontier model to estimate the promotion, inhibition, and net effects of population aging on regional carbon emissions. The results show that regional carbon emissions are decreased by 15.77% due to the inhibition effect, while they are increased by 10.63% due to the promotion effect. As a result, the net effect is that regional carbon emissions are decreased by 5.14% overall due to the composite action of the above effects. In addition, population aging in eastern, western, and central regions significantly reduces regional carbon emissions. And the inhibition effect of population aging on carbon emissions increases continuously and gradually holds the dominant position during the study period. Moreover, the inhibition effect in the eastern region is stronger than that in the central and western regions, which can be strengthened by improving the level of population aging and human capital, as well as urbanization. The conclusions are conducive to providing new perspectives and empirical evidence for understanding the connection between population aging and carbon emissions, as well as policy recommendations for tackling population aging, carbon emission reduction, carbon peaking, and carbon-neutral strategic goals. Full article
(This article belongs to the Section Sustainable Urban and Rural Development)
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22 pages, 1356 KiB  
Article
Bilateral Effects of the Digital Economy on Manufacturing Employment: Substitution Effect or Creation Effect?
by Chenhui Ding, Xiaoming Song, Yingchun Xing and Yuxuan Wang
Sustainability 2023, 15(19), 14647; https://doi.org/10.3390/su151914647 - 9 Oct 2023
Cited by 6 | Viewed by 3018
Abstract
Understanding the substitution effect and creation effect of digital transformation on the manufacturing industry is crucial to safeguarding employment stability and advancing manufacturing sophistication in China’s contemporary context. In this study, a bilateral stochastic frontier model is used to examine the aforementioned effects [...] Read more.
Understanding the substitution effect and creation effect of digital transformation on the manufacturing industry is crucial to safeguarding employment stability and advancing manufacturing sophistication in China’s contemporary context. In this study, a bilateral stochastic frontier model is used to examine the aforementioned effects drawing on provincial panel data of China spanning 2011 to 2020. The study reveals that: Firstly, the substitution effect of digital economy development on manufacturing employment outweighs the creation effect, culminating in a 7.80% decrease below the frontier benchmark, contrasted by a 4.15% increase attributed to the creation effect. The two effects possess an inverse relationship, collectively inducing a 3.66% decline in manufacturing employment as compared to the frontier. Secondly, the prevailing influence of the digital economy upon manufacturing employment is predominantly characterized by the substitution effect. However, projected medium to long term trajectories intimate a diminishing potency of this substitution effect and the creation effect will become more pronounced. Thirdly, in terms of geographical areas, the weakening of the employment-substitution effect due to the digital economy is most evident in the central region, followed by the western, and then the eastern regions. Conclusively, the impact of the digital economy on manufacturing employment exhibits variances contingent upon distinct economic maturation and disparate human capital stratification. Full article
(This article belongs to the Special Issue Digital Technology, Digital Management, and Sustainability)
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11 pages, 1817 KiB  
Article
Over-Expression of ZmIAA29, an AUX/IAA Transcription Factor, Improved Maize Flowering Time
by Chenhui Ma, Kuntai Dang, Qiankun Xie, Javed Hussain Sahito, Baiyu Yuan, Jiong Wan, Xiaoqian Qiu, Jiawen Zhao, Yanan Lin, Shujun Meng, Liqin Mu, Dong Ding, Huili Yang, Yadong Xue, Xiaoyang Chen, Xuehai Zhang and Jihua Tang
Agronomy 2023, 13(8), 2028; https://doi.org/10.3390/agronomy13082028 - 31 Jul 2023
Cited by 7 | Viewed by 2267
Abstract
Maize is one of the most important food and feed crops in China due to the high demand for its use by both humans and animals. The Huang-Huai-Hai region is a major maize cultivation area in China, and the special cropping rotation system [...] Read more.
Maize is one of the most important food and feed crops in China due to the high demand for its use by both humans and animals. The Huang-Huai-Hai region is a major maize cultivation area in China, and the special cropping rotation system of wheat and maize requires a suitable reproductive period for maize. The AUX/IAA and ARF transcription factors are two key genes that regulate auxin signals in plants, which play an important role during the process of auxin regulation in plant growth and development. In this study, we obtained two overexpressed lines of ZmIAA29 belonging to the AUX/IAA transcription factor family. Compared with the Wide type, the overexpressed strains of ZmIAA29 were significantly regulated in maize during the flowering time and had increased ear weight. Moreover, ZmIAA29 was assayed via the yeast two-hybrid and BiLUC systems for interaction, and the results showed that ZmIAA29 interacted with several ZmARF transcription factors. Furthermore, RNA-seq and DAP-seq analysis revealed that ZmIAA29 regulates maize growth and development by influencing pathways such as those for plant signal transduction and the key genes related to maize flowering. Taken together, our results suggest that ZmIAA29 plays a key role in the development of maize flowering. This study provides new insight for better understanding the combined regulation of the AUX/IAA and ARF transcription factors during flowering time in maize. Full article
(This article belongs to the Special Issue Genetic Dissection and Improvement of Crop Traits)
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15 pages, 9458 KiB  
Article
Effect of Expanded Body Diameter on the Soil Surrounding a Pile Based on the Half-Face Pile Model Test of Undisturbed Soil
by Lina Xu, Chenhui Qi, Lei Niu and Xu Ding
Buildings 2023, 13(4), 951; https://doi.org/10.3390/buildings13040951 - 3 Apr 2023
Cited by 3 | Viewed by 1862
Abstract
The effect of expanded body diameter on the displacement field of soil surrounding a pile under different vertical loads was investigated using the half-face pile model test of undisturbed soil. Digital image correlation technology was used to record the displacement characteristics of soil [...] Read more.
The effect of expanded body diameter on the displacement field of soil surrounding a pile under different vertical loads was investigated using the half-face pile model test of undisturbed soil. Digital image correlation technology was used to record the displacement characteristics of soil around the pile in real time. The displacement and failure characteristics of the soil around the pile were analyzed. The results show that with an increased load, the soil below the expanded body is compressed, and the soil at both ends will slip, leading to the continuous development of cracks. In a horizontal direction, the soil surrounding the pile first moves close to the pile and then tends to stabilize or move away from the pile. The horizontal and vertical displacement of the soil decreases as the distance from the pile increases. The main area of influence on the soil is below the expanded body, in which the increased diameter of the expanded body results in a gradual increase in the area of influence. Furthermore, all of the load-settlement curves show a slow decline and the bearing capacity increases with the increased diameter of the expanded body. Therefore, the research in this paper can provide an experimental method for the study of soil displacement around drill-expanded concrete piles. Full article
(This article belongs to the Collection Innovation of Materials and Technologies in Civil Construction)
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25 pages, 4429 KiB  
Article
Analysis and Optimization of Landscape Preference Characteristics of Rural Public Space Based on Eye-Tracking Technology: The Case of Huangshandian Village, China
by Tingting Su, Kaiping Wang, Shuangshuang Li, Xinyan Wang, Huan Li, Huanru Ding, Yanfei Chen, Chenhui Liu, Min Liu and Yunlu Zhang
Sustainability 2023, 15(1), 212; https://doi.org/10.3390/su15010212 - 23 Dec 2022
Cited by 14 | Viewed by 3817
Abstract
As an important part of rural space, the public space landscape has a positive influence on tourists and local residents, and also has an important guiding significance for the sustainable development of rural areas. This study expands the previous research on rural public [...] Read more.
As an important part of rural space, the public space landscape has a positive influence on tourists and local residents, and also has an important guiding significance for the sustainable development of rural areas. This study expands the previous research on rural public space, taking the “user-oriented” landscape preference as an important entry point, taking Beijing rural public space as the research object, using eye-tracking technology to objectively reflect the degree of users’ preference for the landscape, making quantitative analysis through eye-tracking objective data and subjective satisfaction evaluation to explore the subconscious and aesthetic laws of the subjects, and summarizing the internal driving factors leading to its evolution from the summary of phenomena. This paper explores the visual behavior information and significance behind the “subjective space” created by the countryside for the users, intending to provide strategies for landscape optimization and the management of rural public space in an effort to aid the sustainable development of the countryside. Full article
(This article belongs to the Section Sustainable Urban and Rural Development)
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