作者机构：
[Qin, Jiaohua; Li, Chunzhi; Tan, Yun; Wang, Zhenxu] Central South University of Forestry and Technology, Hunan, China;[Li, Jingyu; Tan, Ling; Deng, Chao; Tang, Hao] The Second Xiangya Hospital of Central South University, Hunan, China
摘要：
BACKGROUND: Aortic dissection refers to the true and false two-lumen separation of the aortic wall, in which the blood in the aortic lumen enters the aortic mesomembrane from the tear of the aortic intima to separate the mesomembrane and expand along the long axis of the aorta. PURPOSE: In view of the problems of individual differences, complex complications and many small targets in clinical aortic dissection detection, this paper proposes a convolution neural network MFF-FPN (Multi-scale Feature Fusion based Feature Pyramid Network) for the detection of aortic dissection complications. METHODS: The proposed model uses Resnet50 as the backbone for feature extraction and builds a pyramid structure to fuse low-level and high-level feature information. We add an attention mechanism to the backbone network, which can establish inter-dependencies between feature graph channels and enhance the representation quality of CNN. RESULTS: The proposed method has a mean average precision (MAP) of 99.40% in the task of multi object detection for aortic dissection and complications, which is higher than the accuracy of 96.3% on SSD model and 99.05% on YoloV7 model. It greatly improves the accuracy of small target detection such as cysts, making it more suitable for clinical focus detection. CONCLUSIONS: The proposed deep learning model achieves feature reuse and focuses on local important information. By adding only a small number of model parameters, we are able to greatly improve the detection accuracy, which is effective in detecting small target lesions commonly found in clinical settings, and also performs well on other medical and natural datasets.
摘要：
In chemi-mechanical pulping process, selective fiber separation strategies directly affect pulp property. The secondary wall (SW) separation strategy and middle lamella (ML) separation strategy expose more chemical structures from polysaccharides and lignin on the pulp fiber surface, respectively. Hydrogen-containing groups in these chemical structures generate characteristic spectral changes in response to water perturbation, which makes it possible for surface property analysis of pulp fibers based on near-infrared spectroscopy (NIR). Here, two-dimensional correlation spectroscopy (2DCOS) was obtained by the dynamic NIR spectra of pulp fibers with various equilibrium moisture content (EMC). The 2DCOS-NIR can provide richer structural and distributional information about hydrogen-containing groups which characterize the differences in surface chemical properties due to selective separation of the fibers. In synchronous map, the fibers separated at SW have significant water perturbation-induced spectral changes at the bands due to polysaccharides, and the fibers separated at ML have characteristic spectral changes at the bands due to hydrogen-containing groups from lignin. Furthermore, the 2DCOS spectral features can also accurately reflect the variation in the distribution of hydrogen bonding on the fiber surface under different refining conditions, which directly affects the strength properties of pulp fibers. The PLSR model based on 2DCOS spectral features exhibits excellent and robust predictive performance for internal bond strength with RMSEp of 7.17 J/m2, R of 0.9378 and RPD value of 4.11.
摘要：
Metal-based materials are widely regarded as promising catalysts for activating peroxymonosulfate (PMS) to remove refractory organic contaminants with high efficiency. In our study, Ni-Fe layered double hydroxide (LDH)-biochar (BC) composite-induced PMS-based advanced oxidation process (AOP) was utilized to elucidate the degradation of tetracycline hydrochloride (TCH). In Ni-Fe LDH-BC/PMS system, more than 99% TCH (45 mu M) could be removed effectively at low doses of oxidant (PMS, 0.10 mM) and catalyst (Ni-Fe LDH-BC, 0.10 g/L) addition within 80 min. Besides, the Ni-Fe LDH-BC/PMS system showed high resistance to some inorganic anions, and the Ni-Fe LDH-BC composite possessed excellent reusability in the degradation of TCH (>99% in four cyclic experiments). The reaction mechanisms were investigated via electron paramagnetic resonance detection, chemical quenching tests, probe experiments, and electrochemical measurements. These results indicated that the electron-shuttle mechanism played the dominant role in the removal of TCH. It is worth noting that determination of PMS concentration can reflect the reliability of quenching experiments. In the Ni-Fe LDH-BC composite, BC could not only improve the dispersion of Ni-Fe LDH, but also increase the conductivity of Ni-Fe LDH. Overall, a successful modification strategy was proposed in our study to improve the catalytic property of Ni-Fe LDH, and reaction mechanisms of TCH degradation were discussed deeply and comprehensively.
作者机构：
[Zhaoyang Yu; Yuan Liu; Shanshan Chang] College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China;Hunan Taohuajiang Bamboo Science & Technology Co. Ltd., Yiyang 413400, China;Astrum Innovations Limited, Wisdom Park, Country Garden, Changsha 410006, China;[Denis Rodrigue] Department of Chemical Engineering, Laval University, Quebec, G1V 0A6, Canada;[Xiaodong (Alice) Wang] Department of Wood and Forest Sciences, Laval University, Quebec, G1V 0A6, Canada
通讯机构：
[Jinbo Hu; Gonggang Liu; Shanshan Chang] C;College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>Astrum Innovations Limited, Wisdom Park, Country Garden, Changsha 410006, China<&wdkj&>College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>Hunan Taohuajiang Bamboo Science & Technology Co. Ltd., Yiyang 413400, China<&wdkj&>Astrum Innovations Limited, Wisdom Park, Country Garden, Changsha 410006, China
摘要：
Similar to transpiration, the formulation of interfacial solar evaporation has been designed to perform water treatment. The concept involves wood-based support (tree) with a graphene-based layer acting as leaves. To enhance light absorption and solar-thermal conversion capacity, a novel holly-leaf graphene (HLG) layer with an individual hollowed-out structure was engineered. The formation mechanism of this HLG was shown to be linked to the strong capillarity forces in the polyporous wood. By creating biomimetic leaves made of graphene, the light-to-heat conversion performance can be improved, while exhibiting substantially lower thermal conductivity (74 mW/m/K) than natural wood. Under solar irradiation, HLG/wood exhibits an outstanding evaporation rate of 1.96 kg/m2/h, with an impressive efficiency of 94%. A theoretical model of HLG/wood based on the thermal management capability was built to further confirm its structural superiority in facilitating photothermal conversion. Consequently, a bilayer evaporator based on HLG/wood has the potential to revolutionize water purification processes, including desalination of seawater, removal of heavy metal ions, and treatment of organic dye-contaminated wastewater.
作者机构：
[Yifan Tan; Fanhui Meng] Laboratory of Insect Behavior and Evolutionary Ecology, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China;[Xuanye Wen] Center for Biological Disaster Prevention and Control, National Forestry and Grassland Administration, Shenyang 110031, China;Authors to whom correspondence should be addressed.;[Jinxiu Yu; Mi Li; Wan Deng] Institute of Forestry and Grassland Protection, Hunan Academy of Forestry, Changsha 410018, China;[Xiudan Wang; Daohong Zhu] Authors to whom correspondence should be addressed.<&wdkj&>Laboratory of Insect Behavior and Evolutionary Ecology, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China
通讯机构：
[Xiudan Wang; Daohong Zhu] A;Authors to whom correspondence should be addressed.<&wdkj&>Laboratory of Insect Behavior and Evolutionary Ecology, College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China
摘要：
Basilepta melanopus is a pest that severely affects oil tea plants, and the Notch signaling pathway plays a significant role in the early development of insect ovaries. In this study, we explored the function of the notch gene within the Notch signaling pathway in the reproductive system of B. melanopus. The functional domains and expression patterns of Bmnotch were analyzed. Bmnotch contains 45 epidermal growth factor-like (EGF-like) domains, one negative regulatory region, one NODP domain and one repeat-containing domain superfamily. The qPCR reveals heightened expression in early developmental stages and specific tissues like the head and ovaries. The RNA interference (RNAi)-based suppression of notch decreased its expression by 52.1%, exhibiting heightened sensitivity to dsNotch at lower concentrations. Phenotypic and mating experiments have demonstrated that dsNotch significantly impairs ovarian development, leading to reduced mating frequencies and egg production. This decline underscores the Notch pathway’s crucial role in fecundity. The findings advocate for RNAi-based, Notch-targeted pest control as an effective and sustainable strategy for managing B. melanopus populations, signifying a significant advancement in forest pest control endeavors.
期刊：
Journal of Luminescence,2024年268:120434 ISSN：0022-2313
通讯作者：
Zhang, XM
作者机构：
[Zhang, XM; Long, Fenzhong; Wu, Pianpian; Fu, Jiawei; Zhang, Xinmin] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Hunan Prov Key Lab Mat Surface & Interface Sci & T, Changsha 410004, Peoples R China.
通讯机构：
[Zhang, XM ] C;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Hunan Prov Key Lab Mat Surface & Interface Sci & T, Changsha 410004, Peoples R China.
关键词：
Chloroborate;Phosphor;Site occupation;White LED
摘要：
Investigation on Ce3+ ions occupying different cation sites of a specific compound is of great significance for exploring multicolor phosphors. Herein, we report the luminescent properties of Ce3+ in chloroborate Ca2BO3Cl host. Two kinds of Ce3+ f -d transitions have been observed via adjusting the doping concentration. The assignment for different Ce3+ sites to certain cation sites is corroborated by structural analysis (XRD), fluorescence spectroscopy (PL) and decay kinetic analysis. Information on the two Ce3+ sites' wavelengths of the five 5d bands in the Ca2BO3Cl host lattice together with ecfs, ec, D and Delta S are obtained. Moreover, with the increasing of Ce3+ doping concentration, the emission peak shows an obviously redshift, and the emission color changes from dark blue to blue. The tuning luminescence properties are attributed to the energy transfer from Ce II to Ce I. The optical properties of the as-fabricated white light-emitting diode (LED) are studied. However, the optical properties of current studied Ce3+ doped Ca2BO3Cl is not good enough to be a candidate for near-UV chip excited phosphor-converted white LED.
通讯机构：
[Zhou, WR; Li, JZ ] B;[Li, C ] H;Beijing Forestry Univ, State Key Lab Efficient Prod Forest Resources, Beijing 100083, Peoples R China.;Beijing Forestry Univ, MOE Key Lab Wooden Mat Sci & Applicat, Beijing 100083, Peoples R China.;Beijing Forestry Univ, Beijing Key Lab Wood Sci & Engn, Beijing 100083, Peoples R China.
关键词：
epoxy polymeric siloxane nanoclusters;phenylboronicacid polymeric siloxane nanoclusters;hyperbranched;functional SM adhesive;toughness
摘要：
From an environmentally sustainable perspective, soybean meal (SM) adhesive presents an ideal alternative to petrochemical-based adhesives. Generally, strength and toughness are mutually exclusive for an adhesive. Hence, the creation of protein-based adhesives with high water-resistant strength of bonding, remarkable toughness, and multifunctionality remains a notable challenge. This study reports a dual hyperbranched siloxane nanocluster cross-linking strategy for creating SM-based adhesives with superior performance. In detail, synthesized hyperbranched epoxy siloxane nanocluster (ESN) and hyperbranched phenylboronic acid siloxane nanocluster (BPA@SN) were introduced into the SM matrix to establish a targeted cross-linking network between epoxy groups and protein chains as well as phenylboronic acid and polysaccharides. Meanwhile, the flexible Si-O segments within the hyperbranched siloxane facilitated energy dissipation, significantly boosting the adhesive toughness. After cross-linking modification, SM/ESN/BPA@SN-1 adhesive demonstrated outstanding dry bonding strength (2.04 +/- 0.18 MPa), water-resistant bonding strength (1.12 +/- 0.06 MPa), and toughness (18.5 +/- 4.02 kJ/m(3)). Moreover, the adhesive exhibited distinctly improved resistance to mold, thermal stability, and flame retardancy. Therefore, this new strategy of using functional hyperbranched siloxane nanoclusters and SM to design strong, tough, and multifunctional green and sustainable wood-based biomass adhesives provides new ideas for achieving green development.
期刊：
Engineering Applications of Artificial Intelligence,2024年130:107774 ISSN：0952-1976
通讯作者：
Yi, JZ
作者机构：
[Yi, Jizheng; Yang, Ke; Chen, Aibin; Yi, JZ] Cent South Univ Forestry & Technol, Coll Comp & Informat Engn, Changsha 410004, Peoples R China.;[Yi, Jizheng; Chen, Aibin] Yuelushan Lab Carbon Sinks Forests Variety Innovat, Changsha 410000, Peoples R China.;[Jin, Ze] Tokyo Inst Technol, Inst Innovat Res, Lab Future Interdisciplinary Res Sci & Technol, Tokyo 2268503, Japan.
通讯机构：
[Yi, JZ ] C;Cent South Univ Forestry & Technol, Coll Comp & Informat Engn, Changsha 410004, Peoples R China.
关键词：
Scene text detection;Fully convolutional networks (FCN);Semantic segmentation network;Buffer region;Polygonal expansion
摘要：
Scene text detection has always been a research hotspot in computer vision and image understanding. With the development of deep learning, segmentation-based methods have achieved an exceptional effect in regular or curved text detection, but they cannot separate adjacent word-level texts. In this paper, we proposed a detector called Buffer-Text for the detection of irregular text in the natural scene image. First, the buffer region is proposed for bending text detection which widens the spatial distance between word-level texts. Then, a centerline-based polygon expansion algorithm is developed for the acquisition of the buffer region. After that, the scene text image is divided into different regions which are predicted by adopting the idea of multiclass semantic segmentation. To obtain effective segmentation results and solve the category imbalance problem, a Fully Convolutional Networks (FCN) with Spatial and Channel Squeeze & Excitation Block module is designed, and a loss function with adaptive weight updating is defined for the network. Ultimately, the post-processing including the total erosion and the single expansion is applied to eliminate the areas of noise in the segmented image and to separate the weak junctions in the word-level text. To verify the validity of the proposed method, several experiments were conducted on two curved text datasets, namely Total-Text and CTW1500, and the results indicated that the proposed method achieved significant accuracy in three statistical indicators (precision, recall, and F-score), particularly for the images with natural scenes and various text shapes.
作者机构：
[She, Kang; Sheng, Guo; Shan, Zhengping; Xu, Piaorong; Liu, Exian] China College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China
通讯机构：
[Exian Liu] C;China College of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China
关键词：
Attenuation coefficient;Chemical vapor deposition;Finite element method;Graphene;Nonlinear effects;Thin films
摘要：
Controlling the output light-intensity and realizing the light-switch function in hollow-core anti-resonant fibers (HC-ARFs) is crucial for their applications in polarizers, lasers, and sensor systems. Here, we theoretically propose a hybrid light-intensity-tunable HC-ARF deposited with the sandwiched graphene/hexagonal boron nitride/graphene based on the typical six-circular-tube and the nested structures. Changing the external drive voltage from 12.3 to 31.8 V, the hybrid HC-ARF experiences a high-low alterative attenuation coefficient with a modulation depth 3.87 and 1.91 dB/cm for the six-circular-tube and nested structures respectively, serving as a well-performance light-switch at the optical communication wavelength of 1.55 µm. This response is attributed to the variation of the Fermi level of graphene and is obviously influenced by the core size, fiber length, and the number of graphene and hBN layers. Moreover, one attenuation dip of the modulation depth was found because of the epsilon-near-zero effect in graphene. Our design provides a feasible paradigm for integrating graphene with anti-resonant fibers and high-performance electro-optic modulators.
摘要：
Ellagic acid (EA) is a natural antioxidant found in many fruits and vegetables. However, its solubility in water is poor, which limits its application. To overcome this limitation, the surfactants Span 20 and Tween 60 are used to increase its solubility in water. FTIR, TEM and laser particle size and zeta potential analysis were used to characterize the morphology and structure of ellagic acid emulsions. The antioxidant activity of surfactant-compatible ellagic acid was determined using various antioxidant evaluation methods such as DPPH and ABTS radical scavenging, reducing power and total antioxidant activity. The results indicate that the solubility of ellagic acid in water was improved by the addition of Span 20 and Tween 60, and ellagic acid formed complex particles in combination with Span 20 and Tween 60. Compared to pure ellagic acid, the antioxidant activity of ellagic acid lotion was significantly enhanced.
摘要：
Light is one of the most important environmental factors for plant growth. In the production process of tung oil tree cultivation, due to the inappropriate growth of shading conditions, the lower branches are often dry and dead, which seriously affects the yield of tung oil trees. However, little is known about the key factors of light-induced tree photomorphogenesis. In this study, a total of 22 VfBBX family members were identified to provide a reference for candidate genes in tung tree seedlings. All members of the VfBBX family have different numbers of highly conserved B-box domains or CCT domains. Phylogenetic evolution clustered the VfBBX genes into four categories, and the highest density of members was on chromosome 6. Interspecific collinearity analysis suggested that there were six pairs of duplicate genes in VfBBX members, but the expression levels of all family members in different growth and development stages of the tung tree were significantly divergent. After different degrees of shading treatment and physiological data determination of tung tree seedlings, the differential expression level and chlorophyll synthesis genes correlation analysis revealed that VfBBX9 was a typical candidate nuclear localization transcription factor that was significantly differentially expressed in light response. This study systematically identified the VfBBX gene family and provided a reference for studying its molecular function, enhanced the theoretical basis for tung tree breeding, and identified excellent varieties.
摘要：
Plastic pollution, particularly microplastic (MP) and nanoplastic (NP) pollution, has become a significant concern. This study explores the use of porous wood for filtration to remove MPs and NPs and investigates their removal mechanisms. Undecorated fir wood with a thickness of 4 mm achieves a 91% removal rate for model polystyrene (PS) MPs (2.6 μm) at a water flux of 198 L/m(2)h. However, its separation performance for NPs (255.8 and 50.9 nm) is poor. It also shows that fir wood (coniferous wood) has a higher PS removal rate than poplar wood (hard wood). With poly dimethyl diallyl ammonium chloride (PDDA) modification, both MPs and NPs are effectively removed, with NPs' removal rate increasing from <10% to 90% for PDDA/wood. Characterization results reveal that size-exclusive interception dominates for micron-sized particles, and electrostatic interaction is crucial for nanosized particles. Additionally, intercepted NPs have been used as a strong binder for hot-pressed wood to remarkably enhance the mechanical properties of wood, suggesting a novel recycle utilization of discarded wood filters. Overall, this renewable wood material offers a simple solution for tackling MP/NP pollution.
期刊：
Sustainable Cities and Society,2024年103:105248 ISSN：2210-6707
通讯作者：
Shao, HQ
作者机构：
[Wang, Zhaofeng] Hunan Normal Univ, Dept Tourism, Changsha 410081, Peoples R China.;[Shao, Haiqin] Cent South Univ Forestry & Technol, Dept Tourism, Changsha 410004, Peoples R China.;[Shao, Haiqin] Cent South Univ Forestry & Technol, Dept Tourism, 498 Shaoshan South Rd, Changsha, Hunan, Peoples R China.
通讯机构：
[Shao, HQ ] C;Cent South Univ Forestry & Technol, Dept Tourism, Changsha 410004, Peoples R China.;Cent South Univ Forestry & Technol, Dept Tourism, 498 Shaoshan South Rd, Changsha, Hunan, Peoples R China.
关键词：
Carbon emission efficiency;Spatiotemporal interaction;Exploratory spatiotemporal data analysis;Multiscale geographically weighted regression;Yangtze River Economic Belt
摘要：
Exploring the spatiotemporal evolution and influencing factors of carbon emission efficiency (CEE) is crucial for achieving the goal of urban carbon neutrality. However, most of the existing studies ignore the temporal dependence of the spatial pattern evolution of CEE and the scale variability of the factors influencing CEE. With the help of an exploratory spatiotemporal data analysis framework, this paper examined the spatiotemporal interactions of CEE across 110 cities in the Yangtze River Economic Belt (YREB). In addition, a multiscale geographically weighted regression model was employed to reveal the scale effects of influencing factors on CEE. The main conclusions are as follows: first, the CEE of cities in the YREB shows a fluctuating upward trend, but the overall level is still low, and a certain polarization phenomenon exists. Second, the spatial pattern of the CEE of cities in the YREB is generally relatively stable, with strong spatial integration and path dependence. Finally, the factors influencing CEE exhibit obvious scale variability and spatial heterogeneity. Our findings can provide a basis for localized and differentiated carbon emission reduction decision-making at the city level, as well as new insights for the formulation of sustainable urban spatial planning and low-carbon development strategies.
