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Effects of Atmospheric Pressure Plasma in the Treatment of Experimental Periodontitis in Beagle Dogs

Current Medical Science 2022年第5期42卷 1079-1087页

作者： Xue-zhi TANG Jia-yin LI Qi SHI Han-yong zhang zhi-xiang zhang Ke SONG Xin-pei LU Ying-guang CAO Tian-feng DU Department of Stomatology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan430074China Department of Stomatology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou450052China

Objective The specific objective of this study was to evaluate the effects of atmospheric pressure plasma(APP)in the treatment of experimental periodontitis in Beagle *** The APP jet was diagnosed using optical emission spectroscopy and laser-induced fluorescence *** Beagles received stainless steel ligatures to establish experimental periodontitis *** teeth in the control group were subjected to conventional root surface debridement(RSD)and chlorhexidine *** APP group also started with RSD and was then subjected to plasma *** analyses including plaque index,modified sulcus bleeding index,pocket depth and attachment loss(AL),as well as cone-beam computed tomography(CBCT)analysis,were performed at baseline,4th week,8th week and 12th week after *** The results showed that typical reactive oxygen and nitrogen species were found in the full spectrum and the gas temperature of APP was close to room *** highest concentrations of hydroxide and oxygen were obtained at 5 mm away from the *** both groups,all values in clinical examinations were significantly lower(P<0.05)at 12th week after treatment than those at *** the 12th week,the AL in clinical examinations and the bone loss in CBCT images in the APP group were significantly lower than those in the control group(P<0.05).The hematoxylin-eosin staining showed more renascent alveolar bone in the APP group than in the control *** These findings suggested that APP has profound potential for use as an adjunct approach for periodontitis treatment.

关键词： canine plasma biofilms periodontitis therapeutics

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Recent advances on phylogenomics of gymnosperms and a new classification

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Plant Diversity 2022年第4期44卷 340-350页

作者： Yong Yang David Kay Ferguson Bing Liu Kang-Shan Mao Lian-Ming Gao Shou-Zhou zhang Tao Wan Keith Rushforth zhi-xiang zhang Co-Innovation Center for Sustainable Forestry in Southern China College of Biology and the Environment159 Longpan RoadNanjing Forestry UniversityNanjing 210037China Department of Paleontology University of Vienna1090 ViennaAustria State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of Sciences20 NanxincunXiangshanBeijing 100093China Sino-Africa Joint Research Center Chinese Academy of SciencesWuhan 430074China Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education College of Life SciencesState Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu 610065China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Lijiang Forest Biodiversity National Observation and Research Station Kunming Institute of BotanyChinese Academy of SciencesLijiang 674100China Key Laboratory of Southern Subtropical Plant Diversity FairyLake Botanical GardenShenzhen&Chinese Academy of SciencesShenzhenChina The Shippen AshillCullomptonDevonEN153NLUK School of Ecology and Nature Conservation Beijing Forestry UniversityBeijingChina

Living gymnosperms comprise four major groups:cycads,Ginkgo,conifers,and *** among/within these lineages have not been fully *** generation sequencing has made available a large number of sequences,including both plastomes and single-copy nuclear genes,for reconstruction of solid phylogenetic *** advances in gymnosperm phylogenomic studies have updated our knowledge of gymnosperm ***,we review major advances of gymnosperm phylogeny over the past 10 years and propose an updated classification of extant *** new classification includes three classes(Cycadopsida,Ginkgoopsida,and Pinopsida),five subclasses(Cycadidae,Ginkgoidae,Cupressidae,Pinidae,and Gnetidae),eight orders(Cycadales,Ginkgoales,Araucariales,Cupressales,Pinales,Ephedrales,Gnetales,and Welwitschiales),13 families,and 86 *** also described six new tribes including Acmopyleae ***,Austrocedreae ***,Chamaecyparideae ***,Microcachrydeae ***,Papuacedreae ***,and Prumnopityeae ***,and made 27 new combinations in the genus Sabina.

关键词： Classification Gymnosperms Morphology New tribe Phylogenomics Taxonomy

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Extra contribution to the crystal stability of insensitive explosive TATB: The cooperativity of intermolecular interactions

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Defence Technology（防务技术） 2023年第7期25卷 88-98页

作者： zhi-xiang zhang Yi-tao Si Tao Yu Wei-peng Lai Yi-ding Ma Mao-chang Liu Ying-zhe Liu Bo-zhou Wang State Key Laboratory of Fluorine&Nitrogen Chemicals Xi'an Modern Chemistry Research InstituteXi'an710065PR China International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power EngineeringXi'an Jiaotong UniversityXi'an710049PR China

An in-depth analysis on the cooperativity of intermolecular interactions including hydrogen bonding andπ-π stacking in 1,3,5-triamino-2,4,6-trinitrobenzene(TATB) crystal was studied. Two quantities, cooperativity rate and energy, were defined to evaluate the nature and strength of cooperativity in a series of clusters diverging from 1D to 3D prototypes. The origin and mechanism of the cooperative effect were settled to demonstrate that the nature of cooperativity is determined by whether the non-covalent interactions compete or promote with each other, which is manifested by the changing trend of electron transfer. There exists obvious cooperative effect in intra-layer and inter-layer structures as they own the equivalent non-covalent interactions, while anti-cooperative effect is also observed if two interactions correlate with each other. On the whole, in the process of crystal formation, the apparent cooperativity is the check and balance of the two effects, which is capable to support a global interaction among all of molecules and contribute to the stabilization of system. Based on the results, one may get a new insight to understand the relationship between non-covalent interactions and low impact sensitivity.

关键词： Cooperativity Non-covalent interaction Low-sensitivity Explosives Charge transfer

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A Scheme for Generating Nonisospectral Integrable Hierarchies and Its Related Applications

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Acta Mathematica Sinica,English Series 2021年第5期37卷 707-730页

作者： Yu Feng zhang xiang zhi zhang School of Mathematics China University of Mining and TechnologyXuzhou 221116P.R.China

Under the framework of the complex column-vector loop algebra C^(p),we propose a scheme for generating nonisospectral integrable hierarchies of evolution equations which generalizes the applicable scope of the Tu *** applications of the scheme,we work out a nonisospectral integrable Schrodinger hierarchy and its expanding integrable *** latter can be reduced to some nonisospectral generalized integrable Schrodinger systems,including the derivative nonlinear Schrodinger equation once obtained by Kaup and ***,we obtain the famous Fokker-Plank equation and its generalized form,which has extensive applications in the stochastic dynamic ***,we investigate the Lie group symmetries,fundamental solutions and group-invariant solutions as well as the representation of the tensor of the Heisenberg group H_(3)and the matrix linear group SL(2,R)for the generalized Fokker-Plank equation(GFPE).

关键词： Nonisospectral integrable Schr?dinger hierarchy expanding integrable model symmetry group

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Synergistic effect of Zr and Mo on precipitation and high-temperature properties of Al-Si-Cu-Mg alloys

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China Foundry 2024年第1期21卷 71-81页

作者： Chao Gao Bing-rong zhang Yin-ming Li zhi-ming Wang xiang-bin Meng Faculty of Mechanical Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Hebei Ounai Machinery Mould Co.Ltd. Xingtai 054500HebeiChina

This study focuses on finding a solution to the sharp decline in mechanical properties of Al-Si-Cu-Mg alloys due to rapid coarsening of traditional intermediate phases at high temperature.A new type of modified al oy,to be used in automobile engines at high temperatures,was prepared by adding Zr and Mo into Al-Si-Cu-Mg *** synergistic effects of Zr and Mo on the microstructure evolution and high-temperature mechanical properties were *** show that the addition of Zr and Mo generates a series of intermetallic phases dispersed in the *** can improve the strength of the alloy by hindering dislocation movement and crack *** addition,some nano-strengthened phases show coherent interfaces with the matrix and improve grain *** addition of Mo greatly improves the heat resistance of the *** extremely low diffusivity of Mo enables it to improve the thermal stability of the intermetallic phases,inhibit precipitation during aging,reduce the size of the precipitates,and improve the heat resistance of the alloy.

关键词： Al-Si-Cu-Mg alloy high-temperature properties Zr-Mo-rich intermetallics nano-strengthening phases

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Iron–doped bismuth oxybromides as visible-light-responsive Fenton catalysts for the degradation of atrazine in aqueous phases

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Journal of Environmental Sciences 2024年第3期137卷 321-332页

作者： Yong-Li Cai Yu-Hang Xu Ji-Zun xiang zhi-Qiang zhang Qiu-xiang He Ya-Feng Li Jian Lü Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou UniversityFuzhou 350116China

Pesticides and its degradation products,being well–known residues in soil,have recently been detected in many water bodies as pollutants of emerging concerns,and thus there is a contemporary demand to develop viable and cost–effective techniques for the removal of related organic pollutants in aqueous ***,a visible-light-responsive Fenton system was constructed with iron–doped bismuth oxybromides(Fe–BiOBr)as the *** the advantage of sustainable Fe(Ⅲ)/Fe(Ⅱ)conversion and optimized H_(2)O_(2)utilization,the optimal Fe–BiOBr–2 catalyst showed an excellent atrazine removal efficiency of 97.61%in 120 min,which is superior than the traditional homogeneous Fenton and the majority of heterogeneous processes documented in the *** this photo–Fenton system,hydroxyl(·OH)and superoxide(·O_(2)^(-))radicals were dominant active species contributed to the oxidative degradation of *** to the production of various active radicals,five degradation pathways were proposed based on the identification of intermediates and degradation ***,this work not only demonstrates a fundamental insight into creating highly efficient and atom economic photo-Fenton systems,but also provides a complementary strategy for the treatment of organic pollutants in water.

关键词： Bismuth oxybromide Photo–Fenton Atrazine Catalytic degradation

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Dual-ion carrier storage through Mg^(2+) addition for high-energy and long-life zinc-ion hybrid capacitor

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 179-185页

作者： Junjie zhang xiang Wu School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China

Cation additives can efficiently enhance the total electrochemical capabilities of zinc-ion hybrid capacitors (ZHCs).However their energy storage mechanisms in zinc-based systems are still under ***,we modulate the electrolyte and achieve dual-ion storage by adding magnesium *** we assemble several Zn//activated carbon devices with different electrolyte concentrations and investigate their electrochemical reaction dynamic *** zinc-ion capacitor with Mg^(2+)mixed solution delivers 82 mAh·g^(-1)capacity at 1 A·g^(-1) and maintains 91%of the original capacitance after 10000 *** is superior to the other assembled zinc-ion devices in single-component *** finding demonstrates that the double-ion storage mechanism enables the superior rate performance and long cycle lifetime of ZHCs.

关键词： zinc-ion hybrid capacitor MgSO_(4) electrolyte rate performance storage mechanism

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Reinforcement of High Impact Polystyrene by Aramid Nanoparticle Fillers Prepared via an In situ Bottom-up Approach

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CHINESE JOURNAL OF POLYMER SCIENCE 2024年第8期42卷 1167-1176页

作者： Gong, xiang-Jun Zhao, zhi-Ping Sun, Chang-Mei zhang, Ying Qu, Rong-Jun Wang, Ying Ludong Univ Sch Chem & Mat Sci Yantai 264025 Peoples R China

In this work, aramid nanoparticles (ANPs) were prepared in dimethyl formamide (DMF) solution containing high impact polystyrene (HIPS) via a bottom-up approach. Transmission electron microscopy (TEM) images showed that the obtained ANPs were evenly distributed in the HIPS matrix without any agglomeration. Chemical composition of the ANPs, i.e., poly(p-phenyl-p-phenylenediamine) (PPTA), was confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and X-ray diffractometer (XRD). The ANP/HIPS composites, obtained after ethanol precipitation, were added to neat HIPS as fillers to fabricate ANP/HIPS composite sheets. The surface roughness and the glass transition temperature (Tg) of the sheets were characterized by atomic force microscope (AFM) and differential scanning calorimetry (DSC), respectively. Compared with neat HIPS, the mechanical properties of the composite sheet were significantly improved, and the Young's modulus increased from 246.55 MPa to 2025.12 MPa, the tensile strength increased from 3.07 MPa to 29.76 MPa, and the toughness increased from 0.32 N/mm(2) to 3.92 N/mm(2), with an increase rate of 721%, 869% and 1125%, respectively. Moreover, the thermal stability of the composites improved with the increase in ANP content.

关键词： High impact polystyrene PPTA nanoparticle Reinforce Mechanical property NANOFIBERS PERFORMANCE TOUGHNESS STRENGTH ADHESION FIBER

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The nearest neutron star candidate in a binary revealed by optical time-domain surveys

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Science China(Physics,Mechanics & Astronomy) 2023年第12期66卷 184-202页

作者： Ling-Lin Zheng Mouyuan Sun Wei-Min Gu Tuan Yi zhi-xiang zhang Pei Wang Junfeng Wang Jianfeng Wu Shan-Shan Weng Song Wang Sen-Yu Qi Jia zhang Chun-Qian Li Jian-Rong Shi Yong Shao xiang-Dong Li Jin-Bo Fu Fan Yang Zhongrui Bai Yu Bai Haotong zhang Jifeng Liu Department of Astronomy Xiamen UniversityXiamen 361005China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China Department of Physics Institute of Theoretical PhysicsNanjing Normal UniversityNanjing 210023China Yunnan Observatories Chinese Academy of SciencesKunming 650216China College of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China Key Laboratory of Modern Astronomy and Astrophysics Nanjing UniversityNanjing 210023China

The near-Earth(within~100 pc)supernova explosions in the past several million years can cause the global deposition of radioactive elements(e.g.,60Fe)on *** remnants of such supernovae are too old to be easily *** is therefore of great interest to search for million-year-old near-Earth neutron stars or black holes,the products of ***,neutron stars and black holes are challenging to find even in our Solar neighbourhood if they are not radio pulsars or X-ray/γ-ray *** we report the discovery of one of the nearest(127.7±0.3 pc)neutron star candidates in a detached single-lined spectroscopic binary LAMOST J235456.73+335625.9(hereafter J2354).Utilizing the time-resolved ground-based spectroscopy and space photometry,we find that J2354 hosts an unseen compact object with M_(inv)being 1.4-1.6 M_(⊙).The follow-up Swift ultraviolet(UV)and X-ray observations suggest that the UV and X-ray emission is produced by the visible star rather than the compact ***,J2354 probably harbours a neutron star rather than a hot ultramassive white ***-hour exceptionally sensitive radio follow-up observations with Five-hundred-meter Aperture Spherical radio Telescope fail to reveal any pulsating radio signals at the 6σflux upper limit of 12.5μ***,the neutron star candidate in J2354 can only be revealed via our time-resolved ***,the distance between J2354 and our Earth can be as close as~50 pc around 2.5 million years(Myrs)ago,as revealed by the Gaia *** discovery demonstrates a promising way to unveil the hidden near-Earth neutron stars in binaries by exploring the optical time domain,thereby facilitating understanding of the metal-enrichment history in our Solar neighbourhood.

关键词： neutron stars binary stars stellar evolution

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A V-shaped spectroscopic cell for FTIR measurements

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Chinese Chemical Letters 2011年第4期22卷 481-484页

作者： xiang Qin Lin zhi xiang zhang Wan Qun Hu Department of Chemistry University of Science and Technology of China Hefei 230026 China

A V-shaped spacroscopic cell（V-cell） was constructed using two CaF2 optical plates for FTIR light transparent measurements in the range of 4000-1000 cm^（-1）.The spectrum of ethanol was characterized with the standard spectra,excellent fitting was achieved with a bottom-width correction *** principle of the V-cell was discussed,giving equations for the data *** shows that the V-cell is an auto-focus type spectroscopic cell,which can effectively avoid absorption saturation with amplifications for weak absorption *** V-cell design is simple and effective,easy to operate,suitable for applications in liquid samples with high absorption bands,willing to have broad application prospects.

关键词： V-shaped cell FTIR spectroscopy Light transparent Error correction Demountable Ethanol

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