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283篇 您的检索式:作者名="Yangyang LI"
    题名 作者 年代 出处 被引量
1Engineering Broad-Spectrum Bacterial Blight Resistance by Simultaneously Disrupting Variable TALE-Binding Elements of Multiple Susceptibility Genes in Rice显示文摘Xanthomonas oryzae pv.oryzae(Xoo),the causal agent of bacterial blight of rice,employs the transcription activator-like effectors(TALEs)to induce the expression of the OsSWEET family of putative sugar transporter genes,which function in conferring disease susceptibility(S)in rice plants.To engineer broadspectrum bacterial blight resistance,we used CRISPR/Cas9-mediated gene editing to disrupt the TALEbinding elements(EBEs)of two S genes,OsSWEETH and OsSWEET14,in rice cv.Kitaake,which harbors the recessive resistance allele of Xa25/OsSWEET13.The engineered rice line MS14K exhibited broadspectrum resistance to most Xoo strains with a few exceptions,suggesting that the compatible strains may contain new TALEs.We identified two PthXo2-like TALEs,Tal5LN18 and Tal7PX061,as major virulence factors in the compatible Xoo strains LN18 and PX061,respectively,and found that Xoo encodes at least five types of PthXo2-like effectors.Given that PthXo2/PthXo2.1 target OsSlVEETf3 for transcriptional activation,the genomes of 3000 rice varieties were analyzed for EBE variationsin the OsSWEET13 promoter,and 10Xa25-like haplotypes were identified.We found that Tal5LN18 and Tal7PX〇6i bind slightly different EBE sequences in the OsSWEET13 promoter to activate its expression.CRISPR/Cas9 technology was then used to generate InDels in the EBE of the OsSWEET13 promoter in MS14K to creat a new germplasm with three edited OsSWEET EBEs and broad-spectrum resistance against all Xoo strains tested.Collectively,our findings illustrate how to disarm TALE-S co-evolved loci to generate broad-spectrum resistance through the loss of effector-triggered susceptibility in plants.Zhengyin Xu Xiameng Xu Qiang Gong Ziyang Li Ying Li Sai Wang Yangyang Yang Wenxiu Ma Longyu Liu Bo Zhu Lifang Zou Gongyou Chen 2019Molecular Plant2019,12,11:29
2Regeneration performance and carbon consumption of semi-coke and activated coke for SO_2 and NO removal显示文摘To decrease the operating cost of flue gas purification technologies based on carbon-based materials, the adsorption and regeneration performance of low-price semi-coke and activated coke were compared for SO2 and NO removal in a simulated flue gas. The functional groups of the two adsorbents before and after regeneration were characterized by a Fourier transform infrared(FTIR) spectrometer, and were quantitatively assessed using temperature programmed desorption(TPD) coupled with FTIR and acid–base titration. The results show that semi-coke had higher adsorption capacity(16.2% for SO2 and 38.6% for NO) than activated coke because of its higher content of basic functional groups and lactones. After regeneration, the adsorption performance of semi-coke decreased because the number of active functional groups decreased and the micropores increased. Semi-coke had better regeneration performance than activated coke. Semi-coke had a larger SO2 recovery of 7.2% and smaller carbon consumption of 12% compared to activated coke. The semi-coke carbon-based adsorbent could be regenerated at lower temperatures to depress the carbon consumption, because the SO2 recovery was only reduced a small amount.Song Ding Yuran Li Tingyu Zhu Yangyang Guo 2015Journal of Environmental Sciences2015,27,8:17
3Seasonal variations in leaf capturing of particulate matter, surface wettability and micromorphology in urban tree species显示文摘在叶微粒物质(下午) 的季节的变化在城市的树种类的累积,表面 wettability 和 micromorphology,包括 Sophora 装饰用的梨树(S。装饰用的梨树) , Platanus acerifolia (P。acerifolia ) 并且 Cedrus deodara (C。deodara ) ,在一个单个成长季节期间被学习。三种在下午累积显示出不同季节的趋势,从春天增加到秋天(或冬季) 甚至在雨季期间,但是以不同的率。在学习期间, P 的叶下午保留数量。acerifolia,有隆起的叶的种出现,比 S 的显著地高。装饰用的梨树和 C。deodara,有蜡制的叶表面的种类。除了在 S 的离开轴心的表面上,在叶子的水微滴的接触角度与叶年龄减少了。装饰用的梨树,它仍然保持在整个成长季节非可湿或高度非可湿;在 S 的近轴的表面上的接触角度的减少。装饰用的梨树更大什么时候与 P 相比。acerifolia 和 C。deodara。一种重要、否定的关系在所有三种的叶子的近轴的表面上在叶下午保留数量和接触角度之间存在。wettability 的增加,当 epicuticular 蜡被机械、化学的磨损破坏时,可能引起了,似乎是在叶下午累积导致季节的变化的主要因素。Huixia WANG Hui SHI Yangyang LI Ya YU Jun ZHANG 2013Frontiers of Environmental Science & Engineering2013,7,4:15
4Control of Leaf Senescence by an MeOH- Jasmonates Cascade that Is Epigenetically Regulated by OsSRT1 in Rice显示文摘ChuanYing Fang Hua Zhang Jian Wan YangYang Wu Kang Li Cheng Jin Wei Chen ShouChuang Wang WenSheng Wang HaiWei Zhang Pan Zhang Fei Zhang LiangHuan Qu Xianqing Liu Dao-Xiu Zhou Jie Luo 2016Molecular Plant2016,9,10:14
5Recombinant CC16 protein inhibits the production of pro-inflammatory cytokines via NF-KB and p38 MAPK pathways in LPS-activated RAW264,7 macrophages显示文摘积累的证据显示克莱拉房间 protein-16 (CC16 ) 有反煽动性的功能,尽管深奥分子的小径完全没被阐明。这里,我们评估了效果肿瘤坏死因素 alpha (TNF-) 的表示上的 recombinant 老鼠 CC16 (rCC16 ) , interleukin-6 (IL-6 ) ,和在 lipopolysaccharide (LPS ) 的 IL-8 刺激了老鼠巨噬细胞(RAW264.7 房间) 并且探索了内在的分子的机制。rCC16 在两个禁止了导致 LPS 的 TNF- , IL-6,和 IL-8 表示,这被发现送信人 ribonucleicacid (mRNA ) 水平和蛋白质以一种集中依赖者方式铺平,由即时反向的 transcriptase 聚合酶链反应和连接酶的 immunosorbent 试金示威了。如此的镇压效果被 transcriptional 活动和原子因素(NF ) 的脱氧核糖核酸酸绑定活动的抑制伴随 -B 然而并非使活跃之物蛋白质(AP )-1。西方的污点分析进一步表明 rCC16 禁止了原子 NF-B 和 NF-B 禁止的蛋白质 IB,和 p38 的 cytosolic NF-B, phosphorylation 和减小的减小的增加激活 mitogen 的蛋白质 kinase (MAPK ) 依赖者由在它的 p65 子单元的 Ser276 的 phosphorylation 的 NF-B 激活。而且, rCC16 被发现没另外在c6月N终端 kinase ,c6月,或c-Jun.的原子 translocation 的 phosphorylation 上有效果,TNF-的减小, IL-6 ,并且 IL-8 被颠倒内长的uteroglobin有约束力的蛋白质的水平什么时候被 RNA 干扰在 对待rCC16 、 对待LPS 的 RAW264.7 房间减少。我们的数据建议 rCC16 由在 RAW264.7 房间使 NF-B 和 p38 MAPK 然而并非 AP-1 失去活性压制调停 LPS 的煽动性的调停人 TNF- , IL-6,和 IL-8 生产。Min Pang Yangyang Yuan Dong Wang Ting Li Dan Wang Xiaohong Shi Min Guo Chunfang Wang Xinri Zhang Guoping Zheng Baofeng Yu Hailong Wang 2017Acta Biochimica et Biophysica Sinica2017,49,5:14
6Arabidopsis NIP3;1 Plays an Important Role in Arsenic Uptake and Root-to-Shoot Translocation under Arsenite Stress Conditions显示文摘在 Arabidopsis, nodulin 26-like 内在的蛋白质(捏) aquaporin 蛋白质的亚科由九个成员,组成哪个中的五个(NIP1; 1, NIP1; 2, NIP5; 1, NIP6; 1,并且 NIP7; 1 ) 以前被识别对亚砷酸盐可渗透。然而,角色在植物在亚砷酸盐的 root-to-shoot translocation 捏仍然保持糟糕理解。在这研究,用反向的基因策略, Arabidopsis NIP3; 1 被识别在亚砷酸盐压力条件下面在砷举起和 root-to-shoot 分发起一个重要作用。nip3; 1 loss-of-function 异种在亚砷酸盐忍耐显示了明显的改进为未葬生长和积累的更少砷在野类型的植物比那些射击,而 nip3; 1 nip1; 1 两倍异种显示出强壮的亚砷酸盐忍耐并且在亚砷酸盐压力条件下面改进了根和射击的生长。一个倡导者 -- glucuronidase 分析揭示了那 NIP3; 1 几乎专门在根被表示(与根尖端的异常) ,并且在酵母 Saccharomyces cerevisiae 的 heterologous 表示表明了那 NIP3; 1 能调停亚砷酸盐运输。一起拿,我们的结果建议那 NIP3; 1 在 Arabidopsis 涉及亚砷酸盐举起和 root-to-shoot translocation,可能作为被动、双向的亚砷酸盐 transporter。WenzhongXu Wentao Dai Huili Yan Sheng Li Hongling Shen Yanshan Chen Hua Xu Yangyang Sun Zhenyan He Mi Ma 2015Molecular Plant2015,8,5:13
7Additive manufacturing of high-strength CrMnFeCoNi high-entropy alloys-based composites with WC addition显示文摘Laser melting deposition with WC addition has been developed to fabricate high-strength CrMnFeCoNibased high-entropy alloys-based composites.By this technique,a microstructure of compact refined equiaxed grains can be achieved,and the tensile strength can be remarkably improved.The sample with 5 wt%WC addition shows a promising mechanical performance with a tensile strength of 800 MPa and an elongation of 37%.The improvement in mechanical property may be attributed to the formation of Cr(23)C6 reinforcement precipitates,which could promote the heterogeneous nucleation of grains and hinder the propagation of slip bands.Jinfeng Li Shuo Xiang Hengwei Luan Abdukadir Amar Xue Liu Siyuan Lu Yangyang Zeng Guomin Le Xiaoying Wang Fengsheng Qu Chunli Jiang Guannan Yang 2019Journal of Materials Science & Technology2019,35,11:13
8Humoral immune response to circulating SARS-CoV-2 variants elicited by inactivated and RBD-subunit vaccines显示文摘SARS-CoV-2 variants could induce immune escape by mutations on the receptor-binding domain(RBD)and N-terminal domain(NTD).Here we report the humoral immune response to circulating SARS-CoV-2 variants,such as 501Y.V2(B.1.351),of the plasma and neutralizing antibodies(NAbs)elicited by CoronaVac(inactivated vaccine),ZF2001(RBD-subunit vaccine)and natural infection.Among 86 potent NAbs identified by high-throughput single-cell VDJ sequencing of peripheral blood mononuclear cells from vaccinees and convalescents,near half anti-RBD NAbs showed major neutralization reductions against the K417N/E484K/N501Y mutation combination,with E484K being the dominant cause.VH3-53/VH3-66 recurrent antibodies respond differently to RBD variants,and K417N compromises the majority of neutralizing activity through reduced polar contacts with complementarity determining regions.In contrast,the 242–244 deletion(242–244Δ)would abolish most neutralization activity of anti-NTD NAbs by interrupting the conformation of NTD antigenic supersite,indicating a much less diversity of anti-NTD NAbs than anti-RBD NAbs.Plasma of convalescents and CoronaVac vaccinees displayed comparable neutralization reductions against pseudo-and authentic 501Y.V2 variants,mainly caused by E484K/N501Y and 242–244Δ,with the effects being additive.Importantly,RBD-subunit vaccinees exhibit markedly higher tolerance to 501Y.V2 than convalescents,since the elicited anti-RBD NAbs display a high diversity and are unaffected by NTD mutations.Moreover,an extended gap between the third and second doses of ZF2001 leads to better neutralizing activity and tolerance to 501Y.V2 than the standard three-dose administration.Together,these results suggest that the deployment of RBD-vaccines,through a third-dose boost,may be ideal for combating SARS-CoV-2 variants when necessary,especially for those carrying mutations that disrupt the NTD supersite.Yunlong Cao Ayijiang Yisimayi Yali Bai Weijin Huang Xiaofeng Li Zhiying Zhang Tianjiao Yuan Ran An Jing Wang Tianhe Xiao Shuo Du Wenping Ma Liyang Song Yongzheng Li Xiang Li Weiliang Song Jiajing Wu Shuo Liu Xuemei Li Yonghong Zhang Bin Su Xianghua Guo Yangyang Wei Chuanping Gao Nana Zhang Yifei Zhang Yang Dou Xiaoyu Xu Rui Shi Bai Lu Ronghua Jin Yingmin Ma Chengfeng Qin Youchun Wang Yingmei Feng Junyu Xiao Xiaoliang Sunney Xie 2021Cell Research2021,31,7:12
9Assessing the Dynamics of Grassland Net Primary Productivity in Response to Climate Change at the Global Scale显示文摘Understanding the net primary productivity(NPP) of grassland is crucial to evaluate the terrestrial carbon cycle. In this study, we investigated the spatial distribution and the area of global grassland across the globe. Then, we used the Carnegie-Ames-Stanford Approach(CASA) model to estimate global grassland NPP and explore the spatio-temporal variations of grassland NPP in response to climate change from 1982 to 2008. Results showed that the largest area of grassland distribution during the study period was in Asia(1737.23 × 104 km^2), while the grassland area in Europe was relatively small(202.83 × 10~4 km^2). Temporally, the total NPP increased with fluctuations from 1982 to 2008, with an annual increase rate of 0.03 Pg C/yr. The total NPP experienced a significant increasing trend from 1982 to 1995, while a decreasing trend was observed from 1996 to 2008. Spatially, the grassland NPP in South America and Africa were higher than the other regions, largely as a result of these regions are under warm and wet climatic conditions. The highest mean NPP was recorded for savannas(560.10 g C/(m^2·yr)), whereas the lowest was observed in open shrublands with an average NPP of 162.53 g C/(m^2·yr). The relationship between grassland NPP and annual mean temperature and annual precipitation(AMT, AP, respectively) varies with changes in AP, which indicates that, grassland NPP is more sensitive to precipitation than temperature.LIU Yangyang YANG Yue WANG Qian KHALIFA Muhammad ZHANG Zhaoying TONG Linjing LI Jianlong SHI Aiping 2019Chinese Geographical Science2019,29,5:12
10CPSF30-L-mediated recognition of mRNA m^(6)A modification controls alternative polyadenylation of nitrate signaling-related gene transcripts in Arabidopsis显示文摘N6-methyladenosine(m^(6)A),a ubiquitous internal modification of eukaryotic mRNAs,plays a vital role in almost every aspect of mRNA metabolism.However,there is little evidence documenting the role of m^(6)A in regulating alternative polyadenylation(APA)in plants.APA is controlled by a large protein-RNA complex with many components,including CLEAVAGE AND POLYADENYLATION SPECIFICITY FACTOR30(CPSF30).In Arabidopsis,CPSF30 has two isoforms and the longer isoform(CPSF30-L)contains a YT512-B Homology(YTH)domain,which is unique to plants.In this study,we showed that CPSF30-L YTH domain binds to m^(6)A in v itro.In the cpsf30-2 mutant,the transcripts of many genes including several important nitrate signaling-related genes had shifts in polyadenylation sites that were correlated with m^(6)A peaks,indicating that these gene transcripts carrying m^(6)A tend to be regulated by APA.Wild-type CPSF30-L could rescue the defects in APA and nitrate metabolism in cpsf30-2,but m^(6)A-binding-defective mutants of CPSF30-L could not.Taken together,our results demonstrated that m^(6)A modification regulates APA in Arabidops is and revealed that the m^(6)A reader CPSF30-L affects nitrate signaling by controlling APA,shedding new light on the roles of the m^(6)A modification during RNA 3-end processing in nitrate metabolism.Yiteng Hou Jing Sun Baixing Wu Yangyang Gao Hongbo Nie Zhentian Nie Shuxuan Quan Yong Wang Xiaofeng Cao Sisi Li 2021Molecular Plant2021,14,4:12
11Endometrial membrane organoids from human embryonic stem cell combined with the 3D Matrigel for endometrium regeneration in asherman syndrome显示文摘Asherman’s syndrome(AS),a leading cause of uterine infertility worldwide,is characterized by scarring of the uterine surfaces lacking endometrial epithelial cells,which prevents endometrial regeneration.Current research on cell therapy for AS focuses on mesenchymal and adult stem cells from the endometrium.However,insufficient number,lack of purity,and rapid senescence of endometrial epithelial progenitor cells(EEPCs)during experimental processes restrict their use in cell therapies.In this study,we induced human embryonic stem cells-9(H9-ESC)into EEPCs by optimizing the induction factors from the definitive endoderm.EEPCs,which act as endometrial epithelial cells,accompanied by human endometrial stromal cells provide a niche environment for the development of endometrial membrane organoids(EMOs)in an in vitro 3D culture model.To investigate the function of EMOs,we transplanted tissue-engineered constructs with EMOs into an in vivo rat AS model.The implantation of EMOs into the damaged endometrium facilitates endometrial regeneration and angiogenesis.Implanting EMOs developed from human embryonic stem cells into the endometrium might prove useful for“endometrial re-engineering”in the treatment of Asherman’s syndrome.Xiuxiu Jiang Xingmiao Li Xiangwei Fei Jiajie Shen Jianhua Chen Meijun Guo Yangyang Li 2021Bioactive Materials2021,6,11:11
12In vivo self-assembled small RNAs as a new generation of RNAi therapeutics显示文摘RNAi therapy has undergone two stages of development,direct injection of synthetic siRNAs and delivery with artificial vehicles or conjugated ligands;both have not solved the problem of efficient in vivo siRNA delivery.Here,we present a proof-of-principle strategy that reprogrammes host liver with genetic circuits to direct the synthesis and self-assembly of siRNAs into secretory exosomes and facilitate the in vivo delivery of siRNAs through circulating exosomes.By combination of different genetic circuit modules,in vivo assembled siRNAs are systematically distributed to multiple tissues or targeted to specific tissues(e.g.,brain),inducing potent target gene silencing in these tissues.The therapeutic value of our strategy is demonstrated by programmed silencing of critical targets associated with various diseases,including EGFR/KRAS in lung cancer,EGFR/TNC in glioblastoma and PTP1B in obesity.Overall,our strategy represents a next generation RNAi therapeutics,which makes RNAi therapy feasible.Zheng Fu Xiang Zhang Xinyan Zhou Uzair Ur-Rehman Mengchao Yu Hongwei Liang Hongyuan Guo Xu Guo Yan Kong Yuanyuan Su Yangyang Ye Xiuting Hu Wei Cheng Jinrong Wu Yanbo Wang Yayun Gu Sheng-feng Lu Dianqing Wu Ke Zen Jing Li Chao Yan Chen-Yu Zhang Xi Chen 2021Cell Research2021,31,6:10
13Local icariin application enhanced periodontal tissue regeneration and relieved local inflammation in a minipig model of periodontitis显示文摘Periodontitis is an inflammatory autoimmune disease. Treatment should alleviate inflammation, regulate the immune reaction and promote periodontal tissue regeneration. Icariin is the main active ingredient of Epimedii Folium, and it is a promising compound for the enhancement of mesenchymal stem cell function, promotion of bone formation, inhibition of bone resorption, alleviation of inflammation and regulation of immunity. The study investigated the effect of icariin on periodontal tissue regeneration in a minipig model of periodontitis. The minipig model of periodontitis was established. Icariin was injected locally. The periodontal clinical assessment index, a computed tomography(CT) scan, histopathology and enzyme-linked immune sorbent assay(ELISA)were used to evaluate the effects of icariin. Quantitative analysis results 12 weeks post-injection demonstrated that probing depth,gingival recession, attachment loss and alveolar bone regeneration values were(3.72 ± 1.18) mm vs.(6.56 ± 1.47) mm,(1.67 ± 0.59)mm vs.(2.38 ± 0.61) mm,(5.56 ± 1.29) mm vs.(8.61 ± 1.72) mm, and(25.65 ± 5.13) mm3 vs.(9.48 ± 1.78) mm3 in the icariin group and0.9% NaCl group, respectively. The clinical assessment, CT scan, and histopathology results demonstrated significant enhancement of periodontal tissue regeneration in the icariin group compared to the 0.9% NaCl group. The ELISA results suggested that the concentration of interleukin-1 beta(IL-1β) in the icariin group was downregulated compared to the 0.9% NaCl group, which indicates that local injection of icariin relieved local inflammation in a minipig model of periodontitis. Local injection of icariin promoted periodontal tissue regeneration and exerted anti-inflammatory and immunomodulatory function. These results support the application of icariin for the clinical treatment of periodontitis.Xiuli Zhang Nannan Han Guoqing Li Haoqing Yang Yangyang Cao Zhipeng Fan Fengqiu Zhang 2018International Journal of Oral Science2018,10,3:9
14Adsorption and desorption of SO_2, NO and chlorobenzene on activated carbon显示文摘Activated carbon(AC) is very effective for multi-pollutant removal; however, the complicated components in flue gas can influence each other's adsorption. A series of adsorption experiments for multicomponents, including SO_2, NO, chlorobenzene and H2 O,on AC were performed in a fixed-bed reactor. For single-component adsorption, the adsorption amount for chlorobenzene was larger than for SO_2 and NO on the AC. In the multi-component atmosphere, the adsorption amount decreased by 27.6% for chlorobenzene and decreased by 95.6% for NO, whereas it increased by a factor of two for SO_2,demonstrating that a complex atmosphere is unfavorable for chlorobenzene adsorption and inhibits NO adsorption. In contrast, it is very beneficial for SO_2 adsorption. The temperature-programmed desorption(TPD) results indicated that the binding strength between the gas adsorbates and the AC follows the order of SO_2> chlorobenzene > NO. The adsorption amount is independent of the binding strength. The presence of H2 O enhanced the component effects, while it weakened the binding force between the gas adsorbates and the AC. AC oxygen functional groups were analyzed using TPD and X-ray photoelectron spectroscopy(XPS) measurements. The results reveal the reason why the chlorobenzene adsorption is less affected by the presence of other components. Lactone groups partly transform into carbonyl and quinone groups after chlorobenzene desorption. The chlorobenzene adsorption increases the number of C = O groups, which explains the positive effect of chlorobenzene on SO_2 adsorption and the strong NO adsorption.Yuran Li Yangyang Guo Tingyu Zhu Song Ding 2016Journal of Environmental Sciences2016,28,5:8
15Ultra-sensitive graphene strain sensor for sound signal acquisition and recognition显示文摘为健全信号获得和识别的一个便携、高精确的传感器从编织的特殊设计的 graphene 的薄电影被制作织物(GWF ) 。在被拉长之上,随机的裂缝的高密度出现在网络,它减少当前的小径,从而增加电阻。因此,这部电影能对人的喉咙作为一个紧张传感器起作用以便测量通过肌肉运动,一个声音是否被生产的讲话。超离频敏感允许由提取声波的签名特征的快速、低频率的讲话采样的实现。在这研究, 26 封英语信,典型汉字和音调的代表性的信号,甚至短语和句子被测试,揭示在电阻的明显、典型的变化。而且, graphene 传感器的电阻变化与预告录下的声音完美地反应了。由把人工智能与数字信号处理相结合,我们期望以后,这个 graphene 传感器将能成功地达成复杂声学的系统和听觉的数据的大数量。Yan Wang Tingting Yang Junchao Lao Rujing Zhang Yangyang Zhang Miao Zhu Xiao Li Xiaobei Zang Kunlin Wang Wenjian YU Hu Jin Li Wang Hongwei Zhu 2015Nano Research2015,8,5:8
16Combustion effects and emission characteristics of SO2, CO, NOx and heavy metals during co-combustion of coal and dewatered sludge显示文摘在易燃的索引(C) 和燃烧特征上在煤混合比率的除去的污泥的影响索引硫二氧化物的(S) 和版本(那么 2), 氮氧化物(没有 x ), 碳一氧化物(公司) 和重金属(Hg,同样 Cd, Pb 和 Cr ) 被学习。如果不到 20% 除去的污泥在煤被增加,燃烧特征上的影响能被忽略。而且,排放模式没有 x , 试验因此 2, 公司和重金属在一个高温度的管状的炉子被执行。结果证明变换没有 x 和全部的排放评价 2 因此随增加比率的污泥的增加减少了,并且当相配的比率到达了 30% 时,修理硫的更好的效果能被获得。在不同残余(底部灰和苍蝇灰) 以及在烟道气体的重金属的五种类型的集中和分布被分析。煤和污泥的特征,以及重金属的挥发在重金属的分发上有大影响,这被显示出。Yiying JIN Yangyang LI Fuqiang LIU 2016Frontiers of Environmental Science & Engineering2016,10,1:8
17In vitro degradation and biocompatibility evaluation of typical biodegradable metals (Mg/Zn/Fe) for the application of tracheobronchial stenosis显示文摘Tracheobronchial obstruction in children due to benign stenosis or tracheobronchomalacia still remains a challenging matter of concern.Currently,there is 10%–20%complication rate in clinical treatment.The nonbiodegradable property of silicone stents and nickel-titanium memory alloy stents take the primary responsibility for drawbacks including stimulating local granulation tissue proliferation,displacement,and stent-related infections.Permanent tracheobronchial stent will be a persistent foreign object for a long time,causing excessive secretion of tracheal mucosa,ulceration and even perforation,which is particularly unsuitable for young children with persistent tracheal growth.In this study,the degradation and biocompatibility performance of three typical biodegradable metals were investigated as potential tracheobronchial stent materials.The results exhibited that these materials showed different degradation behaviors in the simulating respiratory fluid environment compared with SBF.Except for pure iron group,high purity magnesium and zinc showed favorable cell adhesion and proliferation in three culture methodologies(direct culture,indirect culture and extraction culture).The proper corrosion rate and good biocompatibility indicated that high purity magnesium and zinc may be good candidates as tracheobronchial stent materials.Yangyang Li Jianglong Yan Wenhao Zhou Pan Xiong Pei Wang Wei Yuan Yufeng Zheng Yan Cheng 2019Bioactive Materials2019,4,1:8
18Highly conductive dodecaborate/MXene composites for high performance supercapacitors显示文摘With the increasingly prominent energy and environmental issues,the supercapacitors,as a highly efficient and clean energy conversion and storage devices,meet the requirements well.However,it is still a challenge to enhance the capacitance and energy density of supercapacitors.A novel and highly conductive dodecaborate/MXene composites have been designed for high performance supercapacitors.The surface charge property of MXene was modified by a simple ultrasonic treatment with ammonium ion,and the dodecaborate ion can be inserted into the inner surface of MXene by electrostatic adsorption.Due to the unique icosahedral cage conjugate structure formed by the B-B bond and the highly delocalized three-dimensionalπbond structure of the electrons,the negative charge is delocalied on the whole dodecaborate ion,which reduces the ability to bind to cations.Therefore,the cations can move easily,and the dodecaborate can act as a“lubricant”for ion diffusion between the MXene layers,which significantly improves the ion transfer rate of supercapacitors.The dodecaborate/MXene composites can achieve an extremely high specific capacitance of 366 F.g^-1 at a scan rate of 2 mV.s^-1,which is more than eight times higher than that of MXene(43 F1-)at the same scan rate.Our finding provides a novel route on the fabrication of the high performance supercapacitors.Zhenxing Li Chang Ma Yangyang Wen Zhiting Wei Xiaofei Xing Junmei Chu Chengcheng Yu Kaili Wang Zhao-Kui Wang 2020Nano Research2020,13,1:7
19Recent progress in fingerprint recognition显示文摘指纹识别逐渐地被用来认识到在平民的日常生活的个人鉴定例如身份证,等等采指纹硬盘。大改进在察觉到技术和自动指纹识别算法的联机指纹被完成了。各种各样的指纹识别技术包括指纹获得,分类,改进并且匹配,高度被改进。这篇论文概述最近在指纹识别进展并且总结与低质量的指纹并且匹配弄歪的指纹图象的改进的特殊焦点为每步建议的算法。两个问题被相信是重要、挑战性的任务。另外,我们也为指纹确认比赛 2004 的指纹识别算法(FVC2004 ) 和指纹供应商技术评估讨论普通评估 2003 (FpVTE2003 ) ,基于哪个我们能客观地并且一致地测量识别算法的表演。TIAN Jie CHEN Xinjian ZHANG Yangyang YANG Xin HE Yuliang LI Liang XIE Weihua ZHENG Zhipeng 2006Progress in Natural Science:Materials International2006,16,3:7
20Synthesis and Characterization of Condensed Polynuclear Aromatic Resin Derived from Ethylene Tar显示文摘As a kind of low-cost and readily available industrial byproduct, ethylene tar (ET) was for the first time utilized for the preparation of heat-resistant condensed polynuclear aromatic resin (COPNAR). The basic properties of ET and the resulted COPNAR were characterized by FT-IR, 1H-NMR, TGA and elemental analysis. The test results showed that ET with high aromatic content (>50%) was suitable for the synthesis of COPNAR with superior heat resistance. The average molecular structure of ET was obtained by means of the improved Brown-Ladner method, and the reaction mechanism was considered as an acid-catalyzed positive ion-typed polymerization. Our findings have provided a new route to develop ET into technology-added heat-resistant resins.Wu Mingbo Shi Yangyang Li Shibin Wang Yuwei Tan Minghui Wang Ding Zheng Jingtang Tsubaki Noritatsu 2012China Petroleum Processing & Petrochemical Technology2012,14,4:7
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