作者机构：
Department of Mathematics, Shantou University, Shantou 515063, China;College of Computer Science and Mathematics, Central South University of Forestry and Technology, Changsha 410004, China;School of Science, Hunan University of Technology, Zhuzhou 412007, China;Author to whom correspondence should be addressed.;[Zhimin Wang] School of Science, Hunan University of Technology, Zhuzhou 412007, China<&wdkj&>Author to whom correspondence should be addressed.
通讯机构：
[Zhimin Wang] S;School of Science, Hunan University of Technology, Zhuzhou 412007, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
fractional derivatives;Cauchy transform;self-similar measure;Bergman space
摘要：
Let μ be a self-similar measure with compact support K. The Hausdorff dimension of K is α. The Cauchy transform of μ is denoted by F(z). For 0<β<1, we define the function F[β], which compares with the fractional derivative of F of order β. Let Φ(z)=F(1/z),|z|<1. In this paper, we prove that Φ[β] belongs to Ap for 0<p<1/(β+1), and (Φ′)[β] belongs to Ap for 1≤p<1/β≤1/(2−α), where Ap is the Bergman space. At the same time, we give a value distribution property of F, which is similar to the big Picard theorem.
摘要：
Eucalyptus was one of the most cultivated hardwood species worldwide, with rapid growth, good wood properties and a wide range of adaptability. Eucalyptus stem undergoes primary growth (longitudinal growth) followed by secondary growth (radial growth), which produces biomass that is an important source of energy worldwide. In order to better understand the genetic regulation of secondary growth in Eucalyptus grandis, Transcriptome analyses in stem segments along a developmental gradient from the third internode to the eleventh internode of E. grandis that spanned primary to secondary growth were carried out. 5,149 genes that were differentially expressed during stem development were identified. Combining the trend analysis by the Mfuzz method and the module-trait correlation analysis by the Weighted Gene Co-expression Network Analysis method, a total of 70 differentially expressed genes (DEGs) selected from 868 DEGs with high connectivity were found to be closely correlated with secondary growth. Results revealed that the differential expression of these DEGs suggests that they may involve in the primary growth or secondary growth. AP1, YAB2 TFs and EXP genes are highly expressed in the IN3, whereas NAC, MYB TFs are likely to be important for secondary growth. These results will expand our understanding of the complex molecular and cellular events of secondary growth and provide a foundation for future studies on wood formation in Eucalyptus.
摘要：
Bacteria colonized on solid electrode developing electroactive biofilm (EAB) has been shown to promote the contaminants biodegradation. Regulating electrode potential can improve the stability of extracellular electron transfer (EET), but how the electrode potential regulating the extracellular polymer secretion and the tetracycline (TC) removal has not been fully studied. Here, EAB cultured at 0 V was used to study the degradation mechanism of TC at different electrode potentials. Results showed that −0.1 V was the optimized electrode potential for TC biodegradation compared with 0.1 V, 0 V and −0.3 V, which was 28 % higher than that without electric field. Stimulation of electric field can retain proper extracellular polymer (EPS) to relieve the poison of TC, while excessive extracellular polysaccharide (PS) at 0 V have hindered the contact between microorganisms and TC, thus limited electron transfer and reduced the TC biodegradation efficiency. Excessively negative potential (−0.3 V) will restrict the electron transfer which was not conducive to the biodegradation of organic pollutants. Microbial community analysis revealed that TC addition have refreshed the EAB structure, Dokdonella and Norank_f_Rikenellaceae replaced Geobacter as the dominant species in EAB to promote TC biodegradation. The variation of metabolic pathway was suggested that the up-regulation of pyruvate metabolism and ubiquinone synthesis at −0.1 V have promoted the TC removal. This study has provided theoretical support for the electrode potential regulating the extracellular polymer secretion and promoting the pollution bioremediation.
摘要：
Myocardial ischemia-reperfusion (MI/R) not only causes cardiac damage, but also causes severe renal damage. T8 is the 8th peptide identified by peptiomics in digested yak milk dregs and our previous studies showed that T8 had strong antioxidant activity. This study evaluated the protective effects and molecular mechanisms of MI/R-induced kidney injury in rats. Our results indicated that peptide T8 could increase ejection fraction (EF) and shortened fraction (FS), and degraded ST segment elevation, which ameliorated cardiac function in the MI/R rats. Peptide T8 could increase activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX), and decreased the contents of malondialdehyde (MDA), serum creatinine (Scr) and blood urea nitrogen (BUN), which could ameliorate renal insufficiency. Peptide T8 and kidney injury-related targets in the MI/R-damaged rats were obtained from network pharmacology analysis. KEGG analysis revealed that T8 might affect 54 signaling pathways and 13 key targets were obtained by PPI network analysis. The binding affinity of peptide T8 to Keap1 was found to be the strongest by molecular docking analysis. In the H2O2-induced HEK293 cell model, peptide T8 decreased reactive oxygen species (ROS) content and changed the expression ratio of Bcl-2 and Bax, thereby inhibiting mitochondria-dependent apoptosis. Further studies indicated that T8 could regulate Nrf2 pathway and downstream target genes such as NQO1, which could reduce oxidative stress-induced damage. These results suggest that peptide T 8 can exert renal protection via regulating Nrf2 pathway and apoptosis-related genes.
作者机构：
[Liu, Dongbo; Zhang, Zhixu] State Key Lab Subhlth Intervent Technol, Changsha 410128, Hunan, Peoples R China.;[Liu, Dongbo; Zhang, Zhixu] Hunan Agr Univ, Coll Hort, Changsha 410128, Hunan, Peoples R China.;[Qin, Dan] Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Hunan, Peoples R China.;[Guo, Xin] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.;[Lin, Haiyan] Natl Res Ctr Engn Technol Utilizat Ingredients Bot, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Guo, X ] C;Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.
关键词：
Adsorption;Carbon dots;Pb(II);Starch
摘要：
The adsorption removal of lead (Pb) ions has become a crucial area of research due to the potential health hazards associated with Pb contamination. Developing cost-effective adsorbents for the removal of Pb(II) ions is significantly important. Hence, a novel fluorescent starch-based hydrogel (FSH) using starch (ST), cellulose nanofibrils (CN), and carbon dots (CD) was fabricated for simultaneous adsorption and detection of Pb(II). A comprehensive characterization of FSH, including its morphological features, chemical composition, and fluorescence characteristics, was conducted. Notably, FSH exhibited a maximum theoretical adsorption capacity of 265.9mg/g, which was 13.0 times higher than that of pure ST. Moreover, FSH was employed as a fluorescent sensor for Pb(II) determination, achieving a limit of detection (LOD) of 0.06μg/L. An analysis was further performed to investigate the adsorption and detection mechanisms of Pb(II) utilizing FSH. This study provides valuable insights into the production of a novel cost-effective ST-based adsorbent for the removal of Pb(II) ions.
作者机构：
[Li, Lin; Zhan, Jialei; Li, Rui; Li, L; Yang, Ruoli; Hu, Yaowen; Cai, Weiwei] Cent South Univ Forestry & Technol, Coll Comp & Informat Engn, Changsha 410004, Hunan, Peoples R China.;[Guan, Renxiang; Hu, Yaowen] Natl Univ Def Technol, Coll Comp, Changsha 410073, Hunan, Peoples R China.;[Zhan, Jialei; Wang, Yanfeng; Yang, Ruoli] Natl Univ Def Technol, Coll Syst Engn, Changsha 410073, Hunan, Peoples R China.;[Xu, Haiwen] Hunan Forest Grassland Fire Prevent Monitoring Dis, Changsha, Hunan, Peoples R China.;[Li, Liujun] Univ Idaho, Dept Soil & Water Syst, Moscow, ID 83844 USA.
通讯机构：
[Li, L ] C;Cent South Univ Forestry & Technol, Coll Comp & Informat Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
Forest fire smoke detection;Feature pyramid network;Loss function;Feature extraction;Deep learning
摘要：
Smoke is an early manifestation of forest fire. Accurate identification of smoke from forest fires is crucial for the prevention and control of forest fires, which helps protect the ecological environment and the safety of people. The texture features of smoke are complex and prone to detection omissions. The forest environment is complex, and smoke-like objects in the forest often interfere with smoke recognition. The concentration of smoke at the edge is thin, which easily leads to edge omission. In response to these problems, we propose a high-precision edge focused forest fire smoke detection network. To begin, in response to the problem of detection omission, we present a Swin multidimensional window extractor (SMWE) that enhances information exchange between windows in both horizontal and vertical dimensions to extract global texture features from images with smoke. Then, the guillotine feature pyramid network (GFPN) is suggested, along with a new guillotine convolution method for reducing redundant feature information from a feature fusion perspective, thereby improving the anti-interference ability of the model. Finally, taking into account the thinness and irregularity of the smoke near the borders, a contour adaptive loss function is suggested to minimize the boundary blur caused by down-sampling the feature map in the network. The experimental and application results show that SMWE-GFPNNet accomplishes 80.92 % of the mAP, 90.01 % of the mAP50, and 83.38 % of the mAP75 on the Forest Fire Smoke Complex Background Detection Dataset. Excellent in anti-interference ability and accuracy.
摘要：
Whitfordiodendron filipes var. tomentosum is an endemic plant in China. There have been no chemical or pharmacological studies of this plant reported before. In the current research, eight triterpenes and two steroids were obtained. Their structures were established by the analysis of NMR data and comparison with those reported in the literature. These ten structurally diverse compounds comprised five distinct carbon frameworks with different functionalities. The chemotaxonomic significance of these secondary metabolites was discussed, disclosing the common components between the variant W. filipes var. tomentosum and the species W. filipe. Evaluation of α-glucosidase inhibitory activities of these isolates disclosed that compounds 1, 2, 4, and 6 exhibited significant α-glucosidase inhibitory activities (IC(50) = 16.6-19.2 μM), which were close in value to the positive control acarbose (IC(50) = 11.5 μM). Moreover, the binding modes between the biologically active compounds 1, 2, 4, and 6 and the α-glucosidase protein were preliminarily studied using molecular docking. This study not only showed the chemical and biological profile of the plant W. filipes var. tomentosum but also revealed that these components could be developed as hypoglycemic lead compounds.
作者机构：
[Peng, Jiqing; Peng, JQ; Xue, Chao; Gao, Yu; Cao, Shoujin; Zhang, Yaoyi; Wen, Yuxing; Chen, Tingfeng; Sheng, Song] Cent South Univ Forestry & Technol, Coll Forestry, 498 South Shaoshan Rd, Changsha 410004, Peoples R China.;[Peng, Jiqing; Peng, JQ; Sheng, Song] Hunan Agr Univ, Yuelushan Lab, Qiushi Bldg, Changsha 410128, Peoples R China.;[Peng, Jiqing; Peng, JQ; Sheng, Song] Belt & Rd Int Union Res Ctr Trop Arid Nonwood Fore, 498 South Shaoshan Rd, Changsha 410004, Peoples R China.
通讯机构：
[Peng, JQ; Cao, SJ ] C;[Peng, JQ ] H;Cent South Univ Forestry & Technol, Coll Forestry, 498 South Shaoshan Rd, Changsha 410004, Peoples R China.;Hunan Agr Univ, Yuelushan Lab, Qiushi Bldg, Changsha 410128, Peoples R China.;Belt & Rd Int Union Res Ctr Trop Arid Nonwood Fore, 498 South Shaoshan Rd, Changsha 410004, Peoples R China.
关键词：
hormone;regulation of flowering;transcriptome;molecular mechanism
摘要：
Understanding the molecular mechanisms that regulate flower growth, development, and opening is of paramount importance, yet these processes remain less explored at the genetic level. Flower development in Hydrangea paniculata 'Vanilla Strawberry' is finely tuned through hormonal signals, yet the genetic underpinnings are not well defined. This study addresses the gap by examining the influence of gibberellic acid (GA3), salicylic acid (SA), and ethylene (ETH) on the flowering traits and underlying molecular responses. Treatment with 100 mg/L SA significantly improved chlorophyll content and bolstered the accumulation of soluble sugars and proteins, advancing the flowering onset by 6 days and lengthening the flowering period by 11 days. Concurrently, this treatment enhanced inflorescence dimensions, increasing length, width, and petal area by 22.76%, 26.74%, and 27.45%, respectively. Contrastingly, 100 mg/L GA3 expanded inflorescence size but postponed flowering initiation and decreased inflorescence count. Higher concentrations of SA and GA3, as well as any concentration of ETH, resulted in delayed flowering and inferior inflorescence attributes. A physiological analysis over 50 days revealed that these regulators variably affected sugar and protein levels and modified antioxidant enzyme activities. An RNA-seq analysis during floral development highlighted significant transcriptomic reprogramming, with SA treatment downregulating Myb transcription factors, implicating them in the modulation of flowering timing and stress adaptation. These findings illuminate the complex interplay between hormonal treatments, gene expression, and flowering phenotypes in Hydrangea paniculata, offering valuable perspectives for ornamental horticulture optimization.
摘要：
Achieving seedlessness in citrus varieties is one of the important objectives of citrus breeding. Male sterility associated with abnormal pollen development is an important factor in seedlessness. However, our understanding of the regulatory mechanism underlying the seedlessness phenotype in citrus is still limited. Here, we determined that the miR159a-DUO1 module played an important role in regulating pollen development in citrus, which further indirectly modulated seed development and fruit size. Both the overexpression of csi-miR159a and the knocking out of DUO1 in Hong Kong kumquat (Fortunella hindsii) resulted in small and seedless fruit phenotypes. Moreover, pollen was severely aborted in both transgenic lines, with arrested pollen mitotic I and abnormal pollen starch metabolism. Through additional cross-pollination experiments, DUO1 was proven to be the key target gene for miR159a to regulate male sterility in citrus. Based on DNA affinity purification sequencing (DAP-seq), RNA-seq, and verified interaction assays, YUC2/YUC6, SS4 and STP8 were identified as downstream target genes of DUO1, those were all positively regulated by DUO1. In transgenic F. hindsii lines, the miR159a-DUO1 module down-regulated the expression of YUC2/YUC6, which decreased indoleacetic acid (IAA) levels and modulated auxin signaling to repress pollen mitotic I. The miR159a-DUO1 module reduced the expression of the starch synthesis gene SS4 and sugar transport gene STP8 to disrupt starch metabolism in pollen. Overall, this work reveals a new mechanism by which the miR159a-DUO1 module regulates pollen development and elucidates the molecular regulatory network underlying male sterility in citrus.
作者机构：
[Lei, Junjie; Chen, Yazhen; Xu, Yichen; Yan, Wende; Zhang, Yi; Wu, Xiaohong; Wang, Jun; Li, Bowen] Cent South Univ Forestry & Technol, Natl Engn Lab Appl Technol Forestry & Ecol South C, Changsha 410004, Peoples R China.;[Peng, Yuanying] Lewis Univ, Coll Arts & Sci, Romeoville, IL 60446 USA.;[Chen, Xiaoyong] Governors State Univ, Coll Arts & Sci, University Pk, IL 60484 USA.;[Farooq, Taimoor Hassan] Bangor Univ, Bangor Coll China, Joint Sch, Changsha 410004, Peoples R China.;[Farooq, Taimoor Hassan] Cent South Univ Forestry & Technol, Changsha 410004, Peoples R China.
通讯机构：
[Wang, J ] C;Cent South Univ Forestry & Technol, Natl Engn Lab Appl Technol Forestry & Ecol South C, Changsha 410004, Peoples R China.;Lutou Natl Stn Sci Observat & Res Forest Ecosyst H, Yueyang 414000, Peoples R China.
关键词：
intercropping;purple soil slope farmland;surface runoff;interflow;nitrogen and phosphorus loss
摘要：
Soil and water loss represent a significant environmental challenge in purple soil cropland in China. However, the quantity and mechanism of nutrient loss from purple soil remain unclear. To understand water and soil conservation and address nitrogen (N) and phosphorus (P) mitigation in Camellia oleifera forest stands on purple soil slope farmland, this study aimed to explore the resistance control effect of forest stands on N and P loss in such agricultural landscapes. In the study, a runoff plot experiment was conducted in purple soil slope farmland. The experiment included three distinct treatments: intercropping of oil tea (Camellia oleifera) and ryegrass (Lolium perenne L.), Camellia oleifera monoculture, and barren land served as the control treatment (CK). Water samples were collected and analyzed from the soil surface runoff and the middle soil layer at a depth of 20 cm (interflow) in three treatment plots under natural rainfall conditions in 2023. Various nutrient components, including total nitrogen (TN), dissolved nitrogen (DN), nitrate nitrogen (NO3--N), ammonium nitrogen (NH4+-N), particulate nitrogen (PN), total phosphorus (TP), dissolved phosphorus (DP), phosphate (PO4+-P), and particulate phosphorus (PP), were measured in the water samples. The results indicated that intercropping effectively mitigated the loss of various forms of N and P in both surface runoff and interflow within purple soil slope farmland. Compared to the CK, the ryegrass intercropping reduced TN and TP loss by 29.3%-37.3% and 25.7%-38.9%, respectively. The ryegrass intercropping led to a decrease in the average total loss of TN, DN, NO3-N, and NH4+-N by 63.0, 24.3, 4.5, and 6.8 g/ha, corresponding to reductions of 33.3%, 47.6%, 58.3%, and 49.1%, respectively, compared to the CK. The average total loss of TP, DP, and PP decreased by 4.4, 1.8, and 1.4 g/hm(2) in the intercropping, reflecting reductions of 32.3%, 31.3%, and 31.1%, respectively. The most significant proportion was observed in PN and PP within the runoff water solution, accounting for 53.3%-74.8% and 56.9%-61.0% of the TN and TP, respectively. These findings establish a foundation for purple soil and water conservation. The research provides valuable insights for land management and policymakers in developing erosion prevention and control programs for sloping cultivated land with Camellia oleifera forests in purple soils. Additionally, it offers guidance for soil and water conservation and prevention of surface source pollution in purple soil regions.
摘要：
Laser cladding was used to fabricate the high entropy alloy (HEA) coating of FeCoCrNiMnx (x = 0, 0.5, 1). Coatings were studied to determine how Mn affected the microstructure, microhardness, and tribological property. Molecular dynamics simulations were used to examine the atomic-scale deformation and wear behavior of FeCoCrNiMn HEA coatings. FeCoCrNiMnx HEA coatings were composed of single FCC-type solid solution. Friction reduction and wear resistance are improved with Mn doping. When compared to the substrate and FeCoCrNi coating, the wear resistance of Mn1 coating is superior by 69.34% and 25.05%, respectively (wear rate is 3.74 x10- 5 mm3/N center dot m). The findings of molecular dynamics simulations demonstrate that Mn-doping significantly enhances strain hardening by the friction-induced FCC phase transition to the HCP phase. The deformation mechanism of Mn1 coating, as determined by the dislocation evolution pattern, is twinning induced plasticity, which improves the plasticity, strength, and work-hardening rate of coating all at once.
作者：
Hu, Yanting;Schafer, Karina V. R.;Hu, Songjiang;Zhou, Wenneng;Xiang, Dong;...
期刊：
Science of The Total Environment,2024年908:168172 ISSN：0048-9697
通讯作者：
Xiang, WH;Zhou, WN
作者机构：
[Chen, Liang; Zhao, Zhonghui; Xiang, Wenhua; Zeng, Yelin; Ouyang, Shuai; Hu, Yanting; Lei, Pifeng; Hu, Songjiang; Fang, Xi; Xiang, WH; Deng, Xiangwen] Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.;[Chen, Liang; Zhao, Zhonghui; Xiang, Wenhua; Zeng, Yelin; Ouyang, Shuai; Hu, Yanting; Lei, Pifeng; Fang, Xi; Deng, Xiangwen] Huitong Natl Stn Sci Observat & Res Chinese Fir Pl, Huitong 438107, Hunan, Peoples R China.;[Schafer, Karina V. R.] Rutgers State Univ, Dept Earth & Environm Sci, 195 Univ Ave, Newark, NJ 07102 USA.;[Zhou, Wenneng] Guangdong Univ Technol, Guangdong Prov Key Lab Water Qual Improvement & Ec, Sch Ecol Environm & Resources, Guangzhou 510006, Peoples R China.;[Xiang, Dong] Forestry Bur Huaihua Perfecture, Huaihua 418099, Hunan, Peoples R China.
通讯机构：
[Xiang, WH ] C;[Zhou, WN ] G;Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha 410004, Hunan, Peoples R China.;Guangdong Univ Technol, Sch Ecol, Environm & Resources, Guangzhou 510006, Peoples R China.
关键词：
Carbon isotope composition;Hydraulic efficiency;Hydraulic traits;Photosynthetic traits;Phylogenetic signal;Water use strategy
摘要：
Leaf carbon isotope composition (δ(13)C) provides an integrative record on the carbon and water balance of plants over long periods. Photosynthetic ability and hydraulic traits which are highly associated with stomatal behavior could affect leaf δ(13)C. Association between photosynthetic ability and leaf δ(13)C has been examined, however, how hydraulic traits influence leaf δ(13)C has not been fully understood. To fill this gap, we investigated the variations in leaf δ(13)C among 2591 woody species (547 shrub and 2044 tree species), and analyzed the link of leaf δ(13)C with leaf photosynthetic and xylem hydraulic traits. Our result showed that leaf δ(13)C was positively correlated to leaf photosynthetic ability and capacity. For hydraulic traits, leaf δ(13)C was negatively related to hydraulic conductivity (K(s)), xylem pressure inducing 50% loss of hydraulic conductivity (P(50)) and vessel diameter (V(dia)). Associations of leaf δ(13)C with xylem hydraulic traits indicate woody species with stronger hydraulic safety discriminated less against (13)C, while woody species with higher hydraulic efficiency had more negative leaf δ(13)C. Shrub species, which showed a lower V(dia) and P(50), had a significant less negative leaf δ(13)C than tree species. Furthermore, woody species inhabiting in dry regions discriminated less against (13)C than those growing in humid regions. Moreover, leaf δ(13)C displayed a low phylogenetic signal based on Blomberg's K statistic. Overall, woody species with a higher leaf photosynthetic ability or stronger hydraulic safety system discriminated less against (13)C and adopt the provident water use strategy.
期刊：
Expert Systems with Applications,2024年244:121150 ISSN：0957-4174
通讯作者：
Zhang, DZ
作者机构：
[Ji, Bin; Zhou, Saiqi; Zhang, Dezhi; Zhang, DZ] Cent South Univ, Sch Traff & Transportat Engn, Changsha 410075, Hunan, Peoples R China.;[Li, Shuangyan] Cent South Univ Forestry & Technol, Coll Logist & Transportat, Changsha 410004, Hunan, Peoples R China.
通讯机构：
[Zhang, DZ ] C;Cent South Univ, Sch Traff & Transportat Engn, Changsha 410075, Hunan, Peoples R China.
关键词：
Two-echelon vehicle routing problem;Direct deliveries;Access time windows;Integer linear programming model;Adaptive large neighborhood search
摘要：
Nowadays, heavy-duty trucks are usually restricted from entering urban areas due to emission and congestion problems in most cities. So, a two-echelon distribution system becomes vastly applicable, in which satellites transfer cargo and avoid heavy-duty trucks entering urban areas. However, with the development of new energy vehicles and access policies and regulations, some environmentally friendly trucks are accessible to urban areas within specific time windows of daytime directly. In light of this, we introduce a two-echelon vehicle routing problem with direct deliveries and access time windows (2E-VRPDDATW) arising in city logistics. In this problem, customers are served by the two-echelon distribution systems within their required time windows and are allowed to be directly delivered by the first echelon vehicles within access time windows, which provides more flexible routing schemes. A novel mixed integer linear programming (MILP) model for the above problem is presented, and the corresponding adaptive large neighborhood algorithm is developed. The computational experiments are provided to verify the validity of the proposed model and the effectiveness of the algorithm. Finally, the sensitivity analysis shows some interesting findings about the number of two-echelon vehicles and the assignment of customers. Moreover, we conclude that direct deliveries are advantageous in transportation costs when the proportion of the end time of access time window to the last end time of customers is greater than 0.25.
