作者机构：
[Liu, Guan-Nan; Li, Xin-Xia; Li, XX] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Liu, Hong-Bo] Hengyang Normal Univ, Sch Phys & Elect Engn, Hengyang 421001, Peoples R China.;[Sun, Ai-Ping; Sun, AP] Southwestern Inst Phys, Chengdu 610041, Peoples R China.
通讯机构：
[Sun, AP ] S;[Li, XX ] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;Southwestern Inst Phys, Chengdu 610041, Peoples R China.
关键词：
tokamaks;helicon wave;lower hybrid wave;synergy current drive
摘要：
Non -inductive current drive plays a crucial role in tokamak, especially for its steady state operations. Recently, the helicon wave (HW) has been regarded as a promising tool for driving off -axis plasma current in reactor -grade machine. The lower -hybrid wave (LHW) is the most effective radio -frequency current drive method, however, it has the drawback, which is limited by the conditions of wave accessibility in the high parameter tokamak, making the wave power usually damped at the plasma edge. HW can spiral towards the plasma centre directly under a high electron density. To obtain a long pulse steady state operation of reactor tokamak, the complementarity of HW and LHW in the aspect of driven current distribution in the high parameter tokamak is considered. The synergy current drive of the HW and the LHW is studied numerically in the steady-state scenario of HL -2M. According to the fast wave dispersion relation of plasma, the HW parameters, including its wave frequency and launched parallel refractive index, are obtained firstly. Results of GENRAY code simulation show that a single pass wave power absorption of the HW can be obtained generally through the electron Landau damping and transit time magnetic pumping effects. On the other hand, the LHW parameters are adopted from the equipped system on the machine. Results of single pass wave absorption are also obtained in the case of LHW. And then, the synergy effects of HW and LHW are studied numerically based on the GENRAY/CQL3D models. The cooperation of these two waves results in a broad plasma current distribution along the radial direction ( = 0.2-0.9) in the machine. Taking the electron distribution functions of these waves into account, it is clear that the electrons are accelerated by the HW in the parallel magnetic field direction, resulting in more electrons entering the region of LHW resonance area. As the consequence, a net plasma current appears. Furthermore, a fine-grained parametric scan is performed by changing the launched parallel refractive index of HW, and the results indicate that positive synergy effects can be generally observed once the related wave current drive profiles are overlapped. Finally, the synergy factor is shown to be proportional to this overlap and reaches its maximum value of 1.18 in HL -2M.
摘要：
Two tricyclohexyltin aryloxyacetates (C1, C2) have been synthesized by the reaction of tricyclohexyltin hydroxide with 1,3-phenylenedioxydiacetic acid (L1) or 3-(N,N'-dicarboxymethyl)aminophenoxyacetic acid (L2), respectively. The structures were characterized by elemental analyses, IR, H-1, C-13 NMR, and X-ray diffraction. The structure of complex C1 has been previously reported, C2 is a novel complex. The results of thermal stability analysis confirmed that the two complexes contain solvent molecules, so they can only exist stably below 70(o)C. The results of herbicidal activity showed that C1 and C2 had moderate growth regulation effects on Alfalfa.
摘要：
Graphene is always used to construct two-dimensional (2D) van der Waals (vdW) heterostructures due to its excellent performance. Hydrogenated phosphorus carbides (HPC or PCH), as novel 2D carbon-based materials, are predicted to be potential for nanoelectronics and optoelectronics. Herein, we explore the electronic prop-erties of vdW heterostructure of graphene and hydrogenated phosphorus carbides under both strain and electric field by using first-principles calculations. The results demonstrate that the Schottky barrier height (SBH) and band gap of the heterostructures can be effectively modulated by in-plane uniaxial or biaxial strain, but the Schottky contact type (n-type or p-type) could not be modified by the strain alone in the investigated range (from-10% to 10%). Interestingly, when the strain and electric field are simultaneously applied to the heterostructure, not only the SBH and band gap but also the Schottky contact type could be modulated effectively. The results open a new avenue for design of 2D carbon-based nanoelectronic and optoelectronic devices.
通讯机构：
[Wei Liu; Xuexiao Zou] C;[Zhuqing Zhang] V;College of Horticulture, Hunan Agricultural University, Changsha, Hunan 410128, China<&wdkj&>Longping Branch, Graduate School of Hunan University, Changsha, Hunan 410125, Chin<&wdkj&>College of Life Sciences and Environment, Hengyang Normal University, Hengyang, Henan 421008, China<&wdkj&>Vegetable Institution of Hunan Academy of Agricultural Science, Changsha, Hunan 410125, China
摘要：
The stay-green trait is of considerable importance in extending the shelf life of green pepper fruit (Capsicum annuum L.) and in enhancing the appearance of ornamental plants. The study revealed the genetic and regulatory mechanisms of the stay-green trait in pepper, which will aid in the selection of ornamental pepper varieties. In this study, a pepper mutant with stay-green fruit named TNX348 was identified from a germplasm resource bank. Two segregating populations were constructed using the stay-green mutant TNX348 and then used in bulked segre-gant analysis combined with RNA sequencing and linkage analyses. The causal gene of the stay-green trait was mapped to an approximately 131-kb region, and a senescence-induced chloroplast protein gene, CaSGR1 (Capana01g000359), was identified as a candidate gene. Sequencing analysis revealed a G -> A single-base mutation of CaSGR1 in TNX348 that led to early termination of translation. Based on the single-base mu-tation, a single nucleotide polymorphism (SNP) marker co-segregating with the stay-green trait was developed. Furthermore, in transcriptome analysis, expression patterns of 11 hormone transduction-related transcription factors, such as abscisic acid-insensitive (ABI), abscisic acid-responsive element-binding factor (ABF), and NAC transcription factor, were similar or opposite to that of CaSGR1. The results indicated that the transcription factors might mediate chlorophyll degradation by regulating the expression of CaSGR1.
摘要：
Photocatalytic reduction of CO2 into CH4 has attracted comprehensive concerns as an effective solution to meet the energy crisis and global warming. F-doped defective anatase TiO2 was reported to effectively improve the photocatalytic efficiency and the selectivity of CH4 generation. However, the mechanism behind it remains unclear. Herein, we systematically studied the photocatalytic pathway of CO2 reduction to CH4 on F-doped defective anatase TiO2(101) by density functional calculations. First, we found that F doping leads to the enhanced reduction potential of photoexcited electrons. Furthermore, we identified a thermodynamically feasible reaction path: CO2 -> CO/HCOO -> CHO -> CH2O -> CH3O -> CH3OH -> CH3 -> CH4. The whole reaction is exothermic, elucidating an extremely strong reduction activity of the TiO2(101) surface. Our work provides some new insights into the CO2 reduction mechanisms of F-doped TiO2, which will help to design TiO2-related photocatalysts with high catalytic performance.
期刊：
JOURNAL OF GEOMETRIC ANALYSIS,2023年33(7):1-45 ISSN：1050-6926
通讯作者：
Chen, SL
作者机构：
[Huang, Manzi; Chen, Jiaolong; Zheng, Huaqing] Hunan Normal Univ, Sch Math & Stat, MOE LCSM, Changsha 410081, Hunan, Peoples R China.;[Chen, Shaolin; Chen, SL] Hengyang Normal Univ, Coll Math & Stat, Hengyang 421002, Hunan, Peoples R China.;[Chen, Shaolin; Chen, SL] Hunan Prov Key Lab Intelligent Informat Proc & App, Hengyang 421002, Peoples R China.
通讯机构：
[Chen, SL ] H;Hengyang Normal Univ, Coll Math & Stat, Hengyang 421002, Hunan, Peoples R China.;Hunan Prov Key Lab Intelligent Informat Proc & App, Hengyang 421002, Peoples R China.
关键词：
Isoperimetric type inequality;Poisson type integral;Hardy type space;Bergman type space;\((K,K')\)-elliptic mapping
摘要：
The main purpose of this paper is to establish some isoperimetric type inequalities for mappings induced by the weighted Laplace differential operators. The obtained results of this paper provide improvements and extensions of the corresponding known results.
作者机构：
[Zhou, Jialu; Wang, Cheng] Yunnan Normal Univ, Fac Geog, Kunming, Peoples R China.;[Zhou, Jialu; Nie, Sheng; Wang, Cheng] Int Res Ctr Big Data Sustainable Dev Goals, Beijing, Peoples R China.;[Zhou, Jialu; Nie, Sheng; Wang, Cheng] Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Digital Earth Sci, Beijing, Peoples R China.;[Zheng, Wenwu; Deng, Yunyuan; Fu, Jing] Hengyang Normal Univ, Coll Geog & Tourism, Hengyang, Peoples R China.;[Sun, Yue] Natl Forestry & Grassland Adm, East China Survey & Planning Inst, Hangzhou, Peoples R China.
通讯机构：
[Nie, S ] I;Int Res Ctr Big Data Sustainable Dev Goals, Beijing 100094, Peoples R China.;Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China.
关键词：
Forest height;terrain height;ICESat-2;space-borne LiDAR;photon-counting;leaf-on and leaf-off
摘要：
Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) provides effective photon-counting light detection and ranging (LiDAR) data for estimating forest height across extensive geographical areas. Although prior studies have illustrated canopy conditions during leaf-on and leaf-off phases may influence ICESat-2 derived forest heights, a comprehensive understanding of this effect remains incomplete. This study seeks to comprehensively assess how varying canopy conditions (leaf-on/leaf-off) affect ICESat-2 forest height retrieval and modelling. First, the accuracies of ICESat-2 terrain and canopy heights under leaf-on and leaf-off conditions were validated. Second, random forest algorithm was utilized to model forest height by integrating ICESat-2, Sentinel-2, and other ancillary datasets. Finally, we evaluated the influence of leaf-on and leaf-off conditions on forest height retrieval and modelling. Results reveal higher consistency between ICESat-2 and airborne LiDAR-derived terrain heights compared to the agreement between two canopy height datasets. Accuracies of ICESat-2 terrain and canopy heights are higher under leaf-off conditions in contrast to leaf-on conditions. Notably, the accuracies of ICESat-2 terrain and canopy heights under various conditions are closely linked to canopy cover. Furthermore, the accuracy of forest height modelling can be enhanced by combining ICESat-2 data collected during both leaf-on and leaf-off seasons with further eliminating low-quality samples.
通讯机构：
[Mugang Lin] C;College of Computer Science and Technology, Hengyang Normal University, Hengyang 421002, China<&wdkj&>Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang 421002, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
The graph autoencoder (GAE) is a powerful graph representation learning tool in an unsupervised learning manner for graph data. However, most existing GAE-based methods typically focus on preserving the graph topological structure by reconstructing the adjacency matrix while ignoring the preservation of the attribute information of nodes. Thus, the node attributes cannot be fully learned and the ability of the GAE to learn higher-quality representations is weakened. To address the issue, this paper proposes a novel GAE model that preserves node attribute similarity. The structural graph and the attribute neighbor graph, which is constructed based on the attribute similarity between nodes, are integrated as the encoder input using an effective fusion strategy. In the encoder, the attributes of the nodes can be aggregated both in their structural neighborhood and by their attribute similarity in their attribute neighborhood. This allows performing the fusion of the structural and node attribute information in the node representation by sharing the same encoder. In the decoder module, the adjacency matrix and the attribute similarity matrix of the nodes are reconstructed using dual decoders. The cross-entropy loss of the reconstructed adjacency matrix and the mean-squared error loss of the reconstructed node attribute similarity matrix are used to update the model parameters and ensure that the node representation preserves the original structural and node attribute similarity information. Extensive experiments on three citation networks show that the proposed method outperforms state-of-the-art algorithms in link prediction and node clustering tasks.
作者机构：
[Guo, Binbin; Dai, Zhong; Yang, Qin; Deng, Yunyuan; Zou, Jun] Hengyang Normal Univ, Coll Geog & Tourism, Hengyang 421002, Peoples R China.;[Xu, Tingbao] Australian Natl Univ, Fenner Sch Environm & Soc, Canberra, ACT 2601, Australia.;[Yang, Qin] China Univ Geosci, Sch Informat Engn, Beijing 100083, Peoples R China.;[Zhang, Jing] Capital Normal Univ, Beijing Lab Water Resources Secur, Beijing 100048, Peoples R China.;[Dai, Zhong] Int Ctr Space Technol Nat & Cultural Heritage HIST, Hengyang Base, Hengyang 421002, Peoples R China.
通讯机构：
[Binbin Guo] C;College of Geography and Tourism, Hengyang Normal University, Hengyang 421002, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
precipitation;satellite observation;evaluation;hydrologic modelling;Xiangjiang River basin
摘要：
Satellite precipitation products (SPPs) have emerged as an important information source of precipitation with high spatio-temporal resolutions, with great potential to improve catchment water resource management and hydrologic modelling, especially in data-sparse regions. As an indirect precipitation measurement, satellite-derived precipitation accuracy is of major concern. There have been numerous evaluation/validation studies worldwide. However, a convincing systematic evaluation/validation of satellite precipitation remains unrealized. In particular, there are still only a limited number of hydrologic evaluations/validations with a long temporal period. Here we present a systematic evaluation of eight popular SPPs (CHIRPS, CMORPH, GPCP, GPM, GSMaP, MSWEP, PERSIANN, and SM2RAIN). The evaluation area used, using daily data from 2007 to 2020, is the Xiangjiang River basin, a mountainous catchment with a humid sub-tropical monsoon climate situated in south China. The evaluation was conducted at various spatial scales (both grid-gauge scale and watershed scale) and temporal scales (annual and seasonal scales). The evaluation paid particular attention to precipitation intensity and especially its impact on hydrologic modelling. In the evaluation of the results, the overall statistical metrics show that GSMaP and MSWEP rank as the two best-performing SPPs, with KGE(Grid) >= 0.48 and KGE(Watershed) >= 0.67, while CHIRPS and SM2RAIN were the two worst-performing SPPs with KGE(Grid) <= 0.25 and KGE(Watershed) <= 0.42. GSMaP gave the closest agreement with the observations. The GSMaP-driven model also was superior in depicting the rainfall-runoff relationship compared to the hydrologic models driven by other SPPs. This study further demonstrated that satellite remote sensing still has difficulty accurately estimating precipitation over a mountainous region. This study provides helpful information to optimize the generation of algorithms for satellite precipitation products, and valuable guidance for local communities to select suitable alternative precipitation datasets.
作者机构：
[Tan, Liang; Wu, Yijin] Hengyang Normal Univ, Sch Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.;[Cheng, Deliang] Jiangxi Normal Univ, Key Lab Fluorine & Silicon Energy Mat & Chem, Minist Educ, Nanchang 330022, Peoples R China.;[Hu, Renzong; Hu, RZ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China.
通讯机构：
[Hu, RZ ] S;[Tan, L ] H;Hengyang Normal Univ, Sch Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.;South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China.
关键词：
Li ion batteries;Low temperature electrolyte;Solid electrolyte interphase;Tin oxides
摘要：
High-capacity storage in Li-ion batteries with graphite anodes remains a challenge at low temperature. By contrast, metal-based composite anode materials, including Sn metal, have shown good lithium storage capabilities at low temperature. However, the suitable low temperature electrolyte is still infancy to achieve high efficiency capacity of Sn-based anode in ultra-low temperature. Herein, a 2-methytetrahydrofuran (2Me-THF)based low temperature electrolyte is proven to support the excellent lithium capability of Sn-based anode at ultra-low temperatures. The formulated 2Me-THF electrolyte exhibited small changes in viscosity and ionic conductivity with decreasing temperature. A SnO2-LiF-G (graphite) electrode with 1 M lithium bis(trifluoromethanesulfonyl)imide-(2Me-THF) electrolyte maintained 80% of the room temperature reversible capacity at-30 degrees C and delivered a reversible capacity of 650 mAh g-1, even at-50 degrees C, under a current density of 100 mA g-1. Furthermore, a detailed characterization based on Fourier Transform Infrared Spectroscopy, X-ray Photoelectron Spectroscopy and Time-of-flight Secondary ion Mass Spectrometry confirmed that the formed inorganic-rich solid electrolyte interphase on the electrode surface effectively maintained the solid-liquid interfacial stability at low temperature. This work provided design concepts for ultralow temperature electrolytes for metal-based anodes, which were especially helpful for further promoting batteries for low temperature applications.
摘要：
Advanced interfacial engineering performs a forceful modulation effect on Zn2+ plating/stripping with simultaneous inhibition of hydrogen evolution reaction, chemical corrosion, and dendrite growth, which is responsible for high reversibility of Zn anode. Herein, a "two in one" interface engineering is developed to improve the reversibility of Zn anode, in which multi-functional Zn5(NO3)2(OH)8 center dot 2H2O layer and preferential Zn (002) texture are constructed simultaneously. Due to nucleophilicity to Zn2+ arising from electronegativity, the layer can accelerate the desolvation process of [Zn (H2O)6]2+ and transfer kinetics of Zn2+ ions, leading to uniform nucleation and effective inhibition of water-induced side reactions. Meanwhile, the latter is beneficial to guiding Zn (002)-preferred orientation deposition with compact structure. Consequently, the Zn electrodes with such complementary interface modulation exhibit prominent reversibility. With an area capacity of 1 mAh cm-2 at 1 mA cm-2, the symmetric cell operates steadily for 4000 h. Highly reversible Zn anode is maintained even at 50 mA cm-2. For full cells coupled with MnO2 cathode, impressive rate capability and cycling stability with a high capacity beyond 100 mAh g-1 at 1 A g-1 after 2000 cycles are achieved. The results provide new insights into Zn anodes with high reversibility for next-generation aqueous zinc ion batteries. A "two in one" interface engineering is developed to improve the reversibility of Zn anode, in which multi-functional Zn5(NO3)2(OH)8 center dot 2H2O layer and preferential Zn (002) texture are constructed simultaneously.Besides inhibiting water-induced side reactions, , such complementary interface not only can accelerate the desolvation process of [Zn (H2O)6]2+ and transfer kinetics of Zn2+ ions, but also guide Zn (002)-preferred orientation deposition. . image
作者机构：
[Ni, Ming; Ni, Penghui] Hengyang Normal Univ, Sch Chem & Mat Sci, Key Lab Funct Met Organ Cpds Hunan Prov, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Penghui Ni] S;School of Chemistry and Materials Science, Key Laboratory of Functional Metal–Organic Compounds of Hunan Province, Hengyang Normal University, Hengyang, Hunan 421008, China
摘要：
C22H22N2O2S4, triclinic, P (1) over bar (no. 2), a = 8.4865(14) angstrom, b = 11.756(2) angstrom, c = 12.863(2) angstrom, a = 69.693(2)degrees, beta = 70.812(2)degrees, gamma = 72.170(2)degrees, V = 1109.6(3) angstrom(3), Z = 2, R-gt(F) = 0.0280, wR(ref)(F-2) = 0.0753, T = 296(2) K. CCDC no.: 2243750 The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.
期刊：
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY,2023年60(9):609-617 ISSN：1060-1325
通讯作者：
Xiao, Lifen;Li, W
作者机构：
[Xiao, Lifen; Li, Liang; Zhu, Xiaoming; Huang, Geng; Li, W; Li, Wei; Lin, Dongyang] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Organometall New Mat, Hengyang, Peoples R China.;[Xiao, Lifen; Li, Liang; Zhu, Xiaoming; Huang, Geng; Li, W; Li, Wei; Lin, Dongyang] Hengyang Normal Univ, Coll Hunan Prov, Hunan Prov Key Lab Funct Met Organ Cpds, Hengyang, Peoples R China.
通讯机构：
[Xiao, LF; Li, W ] H;Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Organometall New Mat, Hengyang, Peoples R China.;Hengyang Normal Univ, Coll Hunan Prov, Hunan Prov Key Lab Funct Met Organ Cpds, Hengyang, Peoples R China.
摘要：
Bottlebrushes have intensive applications in photonics, surfactants, supersoft elastomers, medical imaging, drug delivery and nanomaterials owing to their unique morphology and properties. While the traditional grafting from method required low monomer conversion to avoid gelation, and resulted shorter side chain length. Compared with the traditional grafting from method, the bottlebrushes with improved longer side chains were successfully prepared by combining grafting through and grafting from methods. In this approach, RAFT and ROMP polymerizations were used in sequence to synthesize a series of main chains: including PNB-PMA(7), PNB-PMA(13) and PNB-PMA(25). RAFT polymerization was then used to prepare bottlebrushes with different kinds of main chains under the same conditions. In the meantime, homo-polymerization of PMA was appeared inevitably, which was related to the polymerization time. Owing to the greater molecular weight of PNB-PMA(13) and PNB-PMA(25), the polymerized solutions transformed into gel in shorter time, and resulted to the lower proportion of homo-polymerization (<11%). Compared with PNB-SCS as main chain, the side chain's degree of polymerization increased from 41 to 80 when PNB-PMA(13) was used as main chain.
作者机构：
[Qing, Yuting; Tan, Ziyun; Zhang, Hejinglong; Yao, Yingming; Yao, YM; Li, Wenyi; Li, WY] Hengyang Normal Univ, Coll Chem & Mat Sci, Hunan Engn Res Ctr Monitoring & Treatment Heavy Me, Hengyang 421008, Peoples R China.;[Qing, Yuting; Yuan, Dan; Yao, Yingming; Shi, Yize; Yao, YM; Yuan, D; Wang, Yanwei] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Key Lab Organ Synth Jiangsu Prov, Suzhou 215123, Peoples R China.
通讯机构：
[Yao, YM ; Li, WY] H;[Yuan, D] S;Hengyang Normal Univ, Coll Chem & Mat Sci, Hunan Engn Res Ctr Monitoring & Treatment Heavy Me, Hengyang 421008, Peoples R China.;Soochow Univ, Coll Chem Chem Engn & Mat Sci, Key Lab Organ Synth Jiangsu Prov, Suzhou 215123, Peoples R China.
摘要：
A seriesof amine-bridged tris(phenolato) aluminum complexes (LAl)-Al-1-(LAl)-Al-7 (1-7)were synthesized through alkane elimination reactions of amino-bridgedtris(phenol)s ((LAl)-Al-1-(LAl)-Al-7) with AlMe3. Complexes 1-7 were characterizedthrough NMR, X-ray diffraction analysis, and elemental analysis. Theircatalytic activities in the cycloaddition reaction of CO2 and epoxides were studied. The chloro-substituted o-phenylenediamine-bridged tris(phenolato) aluminum complex 7 exhibited the highest catalytic activity. Under the conditionsof 1 bar CO2 and 85 & DEG;C, complex 7/TBABcatalyzed the reaction of 15 monosubstituted epoxides with CO2, generating cyclic carbonates in 52-99% yields. Disubstitutedepoxides were also transformed into cyclic carbonates in 60-99%yields in the presence of 10 bar CO2. Kinetic study ofthe cycloaddition of epichlorohydrin (ECH) and CO2 revealeda zero-order dependence on CO2 pressure and first-orderdependence on the concentrations of ECH, complex 7, andTBAB.
期刊：
Russian Journal of General Chemistry,2023年93(2):398-402 ISSN：1070-3632
通讯作者：
Kuang, DZ
作者机构：
[Kuang, D. Z.; Yu, J. X.; Tan, Y. X.; Feng, Y. L.; Kuang, DZ] Hengyang Normal Univ, Coll Hunan Prov, Hunan Prov Engn Res Ctr Monitoring & Treatment Hea, Sch Chem & Mat Sci,Key Lab Funct Met Organ Cpds Hu, Hengyang 421008, Peoples R China.
通讯机构：
[Kuang, DZ ] H;Hengyang Normal Univ, Coll Hunan Prov, Hunan Prov Engn Res Ctr Monitoring & Treatment Hea, Sch Chem & Mat Sci,Key Lab Funct Met Organ Cpds Hu, Hengyang 421008, Peoples R China.
摘要：
Two dinuclear trialkytin aryloxyacetates were synthesized by the reaction of 1,4-phenylenedioxydiacetic acid with bis(tributyltin) oxide and bis[tri(2-methyl-2-phenyl)propyltin] oxide, respectively. The structures were characterized by IR, H-1, C-13 NMR, and X-ray crystal diffraction methods. Thermogravimetric analysis showed that the complexes possess good thermal stability in air atmosphere. Herbicidal activity results showed that the complexes showed some ability to regulate the growth of crops.
关键词：
Aqueous zinc ion batteries;Zinc anode;Separator modification;Graphite fluoride
摘要：
Aqueous zinc ion batteries (AZIBs) are considered as a promising candidate for large-scale energy storage due to its superior energy density, high specific energy, environmental friendliness and low cost. However, the dendrite growth and side reaction of zinc anode severely hinder its stability and availability. Herein, commercial glass fiber separators are modified by graphite fluoride nanoflakes via vacuum filtration (denoted as GFNs-PVDF@GF) to reinforce Zn metal anode. The GFNs-PVDF@GF separator acts as an efficient ions transport modulator to homogenize Zn2+ transport and suppress SO42− flux due to strong zinc affinity and electronegativity of GFNs, thereby restraining the growth of zinc dendrite and the formation of byproducts. Accordingly, the Zn||Zn symmetric cell harvests a stable and reversible cycling for 1800 h at 1 mA cm−2 and operates at 5 mA cm−2 for over 900 h. The assembled Zn||MnO2 full cells deliver a capacity retention of 92% after 200 cycles at 1 A g−1. Our results provide a simple and effective strategy of improving stability of zinc anode for high-performance AZIBs.
作者机构：
[Zhu, Xianyou; Fan, Liu] Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421010, Peoples R China.;[Wang, Lei; Fan, Liu] Changsha Univ, Inst Bioinformat Complex Network Big Data, Changsha 410022, Peoples R China.;[Wang, Lei] Changsha Univ, Big Data Innovat & Entrepreneurship Educ Ctr Huna, Changsha 410022, Peoples R China.;[Zhu, Xianyou] Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421010, Peoples R China.;[Wang, Lei] Changsha Univ, Inst Bioinformat Complex Network Big Data, Changsha 410022, Peoples R China.
通讯机构：
[Zhu, XY ; Wang, L ] ;Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang 421010, Peoples R China.;Changsha Univ, Inst Bioinformat Complex Network Big Data, Changsha 410022, Peoples R China.;Changsha Univ, Big Data Innovat & Entrepreneurship Educ Ctr Huna, Changsha 410022, Peoples R China.
摘要：
Microbes are intimately tied to the occurrence of various diseases that cause serious hazards to human health, and play an essential role in drug discovery, clinical application, and drug quality control. In this manuscript, we put forward a novel prediction model named MDASAE based on a stacked autoencoder (SAE) with multi-head attention mechanism to infer potential microbe-drug associations. In MDASAE, we first constructed three kinds of microbe-related and drug-related similarity matrices based on known microbe-disease-drug associations respectively. And then, we fed two kinds of microbe-related and drug-related similarity matrices respectively into the SAE to learn node attribute features, and introduced a multi-head attention mechanism into the output layer of the SAE to enhance feature extraction. Thereafter, we further adopted the remaining microbe and drug similarity matrices to derive inter-node features by using the Restart Random Walk algorithm. After that, the node attribute features and inter-node features of microbes and drugs would be fused together to predict scores of possible associations between microbes and drugs. Finally, intensive comparison experiments and case studies based on different well-known public databases under 5-fold cross-validation and 10-fold cross-validation respectively, proved that MDASAE can effectively predict the potential microbe-drug associations.
