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| 1 | Defect Formation Mechanisms in Selective Laser Melting:A Review显示文摘Defect formation is a common problem in selective laser melting(SLM). This paper provides a review of defect formation mechanisms in SLM. It summarizes the recent research outcomes on defect findings and classification, analyzes formation mechanisms of the common defects, such as porosities, incomplete fusion holes, and cracks. The paper discusses the effect of the process parameters on defect formation and the impact of defect formation on the mechanical properties of a fabricated part. Based on the discussion, the paper proposes strategies for defect suppression and control in SLM. | Bi Zhang Yongtao Li Qian Bai | 2017 | Chinese Journal of Mechanical Engineering2017，30，3： | 50 |
| 2 | Geochemical and isotopic characteristics of volcanic rocks from the northern East China Sea shelf margin and the Okinawa Trough显示文摘Volcanic rocks both from the northern East China Sea (NECS) shelf margin and the northern Okinawa Trough are subalkaline less aluminous,and lower in High Field Strength Elements (HFSE).These rocks are higher in Large Ion Lithophile Elements (LILE),thorium and uranium contents,positive lead anomalies,negative Nb-Ta anomalies,and enrichment in Light Rare Earth Elements (LREE).Basalts from the NECS shelf margin are akin to Indian Ocean Mid-Ocean Ridge Basalt (MORB),and rhyolites from the northern Okinawa Trough have the highest 207 Pb/ 204 Pb and 208 Pb/ 204 Pb ratios.The NECS shelf margin basalts have lower 87 Sr/ 86 Sr ratios,ε N d and σ 18 O than the northern Okinawa Trough silicic rocks.According to 40 K– 40 Ar isotopic ages of basalts from the NECS shelf margin,rifting of the Okinawa Trough may have been active since at least 3.65–3.86 Ma.The origin of the NECS shelf margin basalt can be explained by the interaction of melt derived from Indian Ocean MORB-like mantle with enriched subcontinental lithosphere.The basalts from both sides of the Okinawa Trough may have a similar origin during the initial rifting of the Okinawa Trough,and the formation of basaltic magmas closely relates to the thinning of continental crust.The source of the formation of the northern Okinawa Trough silicic rocks was different from that of the middle Okinawa Trough,which could have been generated by the interaction of basaltic melt with an enriched crustal component.From the Ryukyu island arc to East China,the Cenozoic basalts have apparently increasing trends of MgO contents and ratios of LREE to Heavy Rare Earth Elements (HREE),suggesting that the trace element variabilities of basalts may have been influenced by the subduction of the Philippine Sea plate,and that the effects of subduction of the Philippine Sea plate on the chemical composition of basaltic melts have had a decreasing effect from the Ryukyu island arc to East China. | ZENG Zhigang YU Shaoxiong WANG Xiaoyuan FU Yongtao YIN Xuebo ZHANG Guoliang WANG Xiaomei CHEN Shuai | 2010 | Acta Oceanologica Sinica2010，29，4： | 19 |
| 3 | Curculigoside isolated from Curculigo orchioides prevents hydrogen peroxide-induced dysfunction and oxidative damage in calvarial osteoblasts显示文摘反应的氧种类(ROS ) 包括 H2O2,在骨质疏松症的 pathophysiology 起一个关键作用。因此,能禁止 ROS 生产的代理人或抗氧化剂在骨质疏松症的治疗有高临床的价值。Curculigoside (杂种狗) ,酉分的混合物从 Curculigo orchioides Gaertn 的根茎孤立的主要 bioactive 之一,被报导有有势力抗氧化剂和 anti-osteoporotic 性质。然而,没有直接证据与观察 anti-osteoporotic 效果连接杂种狗的抗氧化剂能力,并且相关分子的机制仍然保持不清楚。因此,我们在 calvarial 造骨细胞对氧化应力调查了杂种狗的保护的效果并且讨论了相关机制。造骨细胞生存能力在 48-h 暴露以后显著地减少了到 H2O2 的 400 M,这被发现,与对待车辆的房间相比,并且 H2O2 的细胞毒素的效果显著地被颠倒什么时候有杂种狗的 0.110 M 的 pretreated (P < 0.05 ) 。有杂种狗的 0.110 M 的预告的处理减少了 ROS 生产和类脂化合物 peroxidation,并且增加了抗氧化剂酶的活动,例如 superoxide,在造骨细胞的 dismutase 和谷胱甘肽 peroxidase 由 H2O2 导致了。另外,象碱的磷酸酶,钙免职,和 Runx2 水平那样的区别标记的导致 H2O2 的减小显著地面对杂种狗被恢复。杂种狗也颠倒了细胞外的调整信号的 kinase 1/2,并且原子 factor-B 发信号和 p38 的抑制的导致 H2O2 的刺激激活 mitogen 的蛋白质 kinase 激活。这些结果通过减少 ROS 的生产提供新卓见进杂种狗的造骨细胞保护的机制,建议那条杂种狗可以作为为骨质疏松症和另外的骨头相关的人的疾病的预防和处理的一个对简历安全的代理人被开发。 | Ying Wang Lu Zhao Yin Wang Jinlong Xu Yah Nie Yuanhui Guo Yongtao Tong Luping Qin Qiaoyan Zhang | 2012 | Acta Biochimica et Biophysica Sinica2012，44，5： | 15 |
| 4 | Arabidopsis co-chaperonin CPN20 antagonizes Mg-chelatase H subunit to derepress ABA-responsive WRKY40 transcription repressor显示文摘Our previous study demonstrated that a chloroplast co-chaperonin 20(CPN20),one of the interaction partners of the magnesium-protoporphyrin IX chelatase H subunit(CHLH/ABAR),negatively regulates ABA signaling at the same node with ABAR but upstream of WRKY40 transcription repressor in Arabidopsis thaliana.In the present experiment,we showed that ABA directly inhibits the ABAR-CPN20 interaction,and also represses expression of CPN20,which depends on ABAR.CPN20 inhibits ABAR-WRKY40 interaction by competitively binding to ABAR.ABAR downregulates,but CPN20 upregulates,WRKY40 expression.The cpn20-1 mutation induces downregulation of WRKY40,and suppresses the upregulated level of WRKY40 due to the cch mutation in the ABAR gene.ABA-induced repressive effect of the WRKY40 gene is strengthened by downregulation of CPN20 but reduced by upregulation of CPN20.Together with our previously reported genetic data,we provide evidence that CPN20 functions through antagonizing the ABAR-WRKY40 coupled pathway,and ABA relieves this pathway of repression by inhibiting the ABAR-CPN20 interaction to activate ABAR-WRKY40 interaction. | ZHANG XiaoFeng JIANG Tao YU YongTao WU Zhen JIANG ShangChuan LU Kai FENG XiuJing LIANG Shan LU YanFen WANG XiaoFang ZHANG DaPeng | 2014 | Science China(Life Sciences)2014，57，1： | 11 |
| 5 | Highly expressed BMP9/GDF2 in postnatal mouse liver and lungs may account for its pleiotropic effects on stem cell differentiation,angiogenesis,tumor growth and metabolism显示文摘Bone morphogenetic protein 9(BMP9)(or GDF2)was originally identified from fetal mouse liver cDNA libraries.Emerging evidence indicates BMP9 exerts diverse and pleiotropic functions during postnatal development and in maintaining tissue homeostasis.However,the expression landscape of BMP9 signaling during development and/or in adult tissues remains to be analyzed.Here,we conducted a comprehensive analysis of the expression landscape of BMP9 and its signaling mediators in postnatal mice.By analyzing mouse ENCODE transcriptome datasets we found Bmp9 was highly expressed in the liver and detectable in embryonic brain,adult lungs and adult placenta.We next conducted a comprehensive qPCR analysis of RNAs isolated from major mouse tissues/organs at various ages.We found that Bmp9 was highly expressed in the liver and lung tissues of young adult mice,but decreased in older mice.Interestingly,Bmp9 was only expressed at low to modest levels in developing bones.BMP9-associated TGFβ/BMPR type I receptor Alk1 was highly expressed in the adult lungs.Furthermore,the feedback inhibitor Smads Smad6 and Smad7 were widely expressed in mouse postnatal tissues.However,the BMP signaling antagonist noggin was highly expressed in fat and heart in the older age groups,as well as in kidney,liver and lungs in a biphasic fashion.Thus,our findings indicate that the circulating BMP9 produced in liver and lungs may account for its pleiotropic effects on postnatal tissues/organs although possible roles of BMP9 signaling in liver and lungs remain to be fully understood. | Wei Liu Zhongliang Deng Zongyue Zeng Jiaming Fan Yixiao Feng Xi Wang Daigui Cao Bo Zhang Lijuan Yang Bin Liu Mikhail Pakvasa William Wagstaff Xiaoxing Wu Huaxiu Luo Jing Zhang Meng Zhang Fang He Yukun Mao Huiming Ding Yongtao Zhang Changchun Niu Rex C.Haydon Hue H.Luu Jennifer Moriatis Wolf Michael J.Lee Wei Huang Tong-Chuan He Yulong Zou | 2020 | Genes & Diseases2020，7，2： | 9 |
| 6 | A Remote Sensing-based Analysis on the Impact of Wenchuan Earthquake on the Core Value of World Nature Heritage Sichuan Giant Panda Sanctuary显示文摘In this study,we used remotely sensed data,GIS modeling,and statistical methods to evaluate the damage caused by the Wenchuan Earthquake (May 12,2008) to the giant panda (Ailuropoda melanoleuca) habitat in the World Nature Heritage Sichuan Giant Panda Sanctuary (WHSGPS) in China.A landscape ecological analysis found increases of landscape heterogeneity,complexity,and fragmentation in the giant panda habitat after the earthquake.A terrain analysis found that slope and elevation are directly associated with the distribution of the damaged areas.As slope and elevation increase,the size of the damaged area keeps increase until to a peak,and then starts to drop.The total area of the damaged vegetation in our study area is 114.26 km 2,accounting for 3.78% of the study area;30.46% of that 114.26 km 2 is located in the Core Zone of WHSGPS.There are 18.57km 2 of the damaged vegetation located in the identified suitable giant panda habitat,accounting for 1.75% of the total area of suitable giant panda habitats in the study area.Based on these findings,we conclude that the Wenchuan Earthquake does not have significant impact on the WHSGPS as a whole. | YU Hu ZHAO Yongtao MA Yuewei SUN Yulian ZHANG Hu YANG Shihong LUO Yong | 2011 | Journal of Mountain Science2011，8，3： | 8 |
| 7 | Dynamic web service composition based on OWL-S显示文摘Composing existing web services for enterprise applications may enable higher level of reuse. However the composition processes are mostly static and lack of support for runtime redesign. In this paper, we describe our approach to the extension of the OWL-S ontology framework for dynamic web service composition. We raise the level of abstraction and propose an abstract service layer so that web services can be com- posed at the abstract service level instead of the concrete level. Each abstract service is attached with an instance pool including all instances of the abstract service to facilitate fail-over and dynamic compositions. | Jing DONG Yongtao SUN Sheng YANG Kang ZHANG | 2006 | Science in China(Series F)2006，49，6： | 8 |
| 8 | An antiretroviral regimen containing 6 months of stavudine followed by long-term zidovudine for first-fine HIV therapy is optimal in resource-limited settings: a prospective, multicenter study in China显示文摘 | Li Taisheng Guo Fuping Li Yijia Zhang Chengda Han Yang Lye Wei He Yun Lu Hongzhou Xie Jing Huang Aiqiong Li Yanling Tang Xiaoping Wang Hui Zhang Tong Gao Guiju Lei Junkang Zhang Xiaoying Wu Xinhua Sun Yongtao Bai Jinsong Luo Ling Wang Huanlmg | 2014 | Chinese Medical Journal2014，，1： | 6 |
| 9 | A New Method of Wind Turbine Bearing Fault Diagnosis Based on Multi-Masking Empirical Mode Decomposition and Fuzzy C-Means Clustering显示文摘Based on Multi-Masking Empirical Mode Decomposition (MMEMD) and fuzzy c-means (FCM) clustering, a new method of wind turbine bearing fault diagnosis FCM-MMEMD is proposed, which can determine the fault accurately and timely. First, FCM clustering is employed to classify the data into different clusters, which helps to estimate whether there is a fault and how many fault types there are. If fault signals exist, the fault vibration signals are then demodulated and decomposed into different frequency bands by MMEMD in order to be analyzed further. In order to overcome the mode mixing defect of empirical mode decomposition (EMD), a novel method called MMEMD is proposed. It is an improvement to masking empirical mode decomposition (MEMD). By adding multi-masking signals to the signals to be decomposed in different levels, it can restrain low-frequency components from mixing in highfrequency components effectively in the sifting process and then suppress the mode mixing. It has the advantages of easy implementation and strong ability of suppressing modal mixing. The fault type is determined by Hilbert envelope finally. The results of simulation signal decomposition showed the high performance of MMEMD. Experiments of bearing fault diagnosis in wind turbine bearing fault diagnosis proved the validity and high accuracy of the new method. | Yongtao Hu Shuqing Zhang Anqi Jiang Liguo Zhang Wanlu Jiang Junfeng Li | 2019 | Chinese Journal of Mechanical Engineering2019，32，3： | 6 |
| 10 | Emplacement Mechanism of the Akebasitao Pluton:Implications for Regional Tectonic Evolution of West Junggar,NW China显示文摘Late Carboniferous to Early Permian A-type granites are extensively distributed throughout the West Junggar region,NW China,and the Akebasitao pluton is extremely distinguished among these plutons.In this paper,we reported new anisotropy of magnetic susceptible(AMS) data combine with detailed field study and audio magnetotelluric(AMT) sounding to assess the three-dimensional shape and magmatic emplacement mechanism of the Akebasitao pluton.The geological features and the AMT sounding indicate that the pluton had a slightly oblique movement of magma from northwest to southeast,which was most likely to correspond to an asymmetrical torch with a laccolith-shaped upper part,and a lower part formed by sub-vertical 'root' that was located within its northwestern part,probably controlled by the NE-trending Anqi fault.The AMS fabrics of aU the specimens reveal a low P_j value(mean of 1.02) and a low T value(mean of-0.024),suggesting that the deformation of the AMS ellipsoid is relatively weak.The specimens exhibit both oblate and prolate shapes of the AMS ellipsoid.Magnetic lineations and foliations are randomly distributed throughout the pluton without any preferred orientation.These AMS patterns indicate that the pluton formed in a relatively stable structural environment with no regional extrusion.Therefore,we propose a complex emplacement process in which the magmas reached the shallower crust levels via deep-faults and subsequently occupied the room created by doming,accompanied by sloping near the pluton roof.Additionally,the regional tectonic setting was relatively stable during the emplacement of the Akebasitao pluton,indicating the termination of compressional orogeny during the late Late Carboniferous in the West Junggar region.This conclusion perfectly coincides with the regional tectonic paleogeography,magmatic system,and paleostress field. | ZHANG Pan WANG Guocan LI Yongtao ZHANG Shengye PENG Chao ZHAO Hongwei ZHA Yanhong | 2017 | Acta Geologica Sinica(English Edition)2017，91，3： | 5 |
| 11 | Effect of water-driven changes in rice rhizosphere on Cd lability in three soils with different pH显示文摘Pot experiments were conducted to evaluate the effect of water management,namely continuous flooding(CF),intermittent flooding(IF)and non-flooding(NF),on Cd phytoavailaility in three paddy soils that differed in p H and in Cd concentrations.Diffusive gradients in thin films(DGT)technique was employed to monitor soil labile Cd and Fe concentrations simultaneously at three growth stages(tillering,heading and mature stage)of rice.The Cd phytoavailability were generally in the order of NF>IF>CF,and higher rice Cd(over permitted level,0.2 mg/kg)were only found in neutral and acidic soils under NF conditions.DGT measured soil labile Cd rather than total Cd was the most reliable predictor for Cd accumulation in rice.CF enhanced the formation of root plaques,which related to oxidation of large quantities of available Fe on root surfaces due to the O2 secretion of rice root.The Cd concentration in root plaques shared the same trend with DGT-Cd.Generally,root plaques would inhibit Cd uptake by rice under CF conditions,while under IF and NF conditions,root plaques act as a temporarily store of Cd,and soil labile Cd is the key factor that controls the transfer of Cd from soil to rice.The results of principle component analysis revealed that water management had the greatest effect on soil Cd lability and rice Cd in acidic soil.Thus,it is important to consider the availability of Cd and soil p H when assessing current agricultural practices of contaminated soil in China. | Jinjin Wang Dongqin Li Qin Lu Yulong Zhang Huijuan Xu Xueli Wang Yongtao Li | 2020 | Journal of Environmental Sciences2020，32，1： | 5 |
| 12 | Notch signaling:Its essential roles in bone and craniofacial development显示文摘Notch is a cellecell signaling pathway that is involved in a host of activities including development,oncogenesis,skeletal homeostasis,and much more.More specifically,recent research has demonstrated the importance of Notch signaling in osteogenic differentiation,bone healing,and in the development of the skeleton.The craniofacial skeleton is complex and understanding its development has remained an important focus in biology.In this review we briefly summarize what recent research has revealed about Notch signaling and the current understanding of how the skeleton,skull,and face develop.We then discuss the crucial role that Notch plays in both craniofacial development and the skeletal system,and what importance it may play in the future. | Mikhail Pakvasa Pranav Haravu Michael Boachie-Mensah Alonzo Jones Elam Coalson Junyi Liao Zongyue Zeng Di Wu Kevin Qin Xiaoxing Wu Huaxiu Luo Jing Zhang Meng Zhang Fang He Yukun Mao Yongtao Zhang Changchun Niu Meng Wu Xia Zhao Hao Wang Linjuan Huang Deyao Shi Qing Liu Na Ni Kai Fu Michael J.Lee Jennifer Moriatis Wolf Aravind Athiviraham Sherwin S.Ho Tong-Chuan He Kelly Hynes Jason Strelzow Mostafa El Dafrawy Russell R.Reid | 2021 | Genes & Diseases2021，8，1： | 4 |
| 13 | PARAMETERS DETERMINATION METHOD OF PHASE-SPACE RECONSTRUCTION BASED ON DIFFERENTIAL ENTROPY RATIO AND RBF NEURAL NETWORK显示文摘Phase space reconstruction is the first step of recognizing the chaotic time series.On the basis of differential entropy ratio method,the embedding dimension opt m and time delay t are optimal for the state space reconstruction could be determined.But they are not the optimal parameters accepted for prediction.This study proposes an improved method based on the differential entropy ratio and Radial Basis Function(RBF)neural network to estimate the embedding dimension m and the time delay t,which have both optimal characteristics of the state space reconstruction and the prediction.Simulating experiments of Lorenz system and Doffing system show that the original phase space could be reconstructed from the time series effectively,and both the prediction accuracy and prediction length are improved greatly. | Zhang Shuqing Hu Yongtao Bao Hongyan Li Xinxin | 2014 | Journal of Electronics(China)2014，31，1： | 4 |
| 14 | Lipidomics reveals carnitine palmitoyltransferase 1C protects cancer cells from lipotoxicity and senescence显示文摘Lipotoxicity, caused by intracellular lipid accumulation, accelerates the degenerative process of cellular senescence, which has implications in cancer development and therapy. Previously, carnitine palmitoyltransferase 1C(CPT1C), a mitochondrial enzyme that catalyzes carnitinylation of fatty acids, was found to be a critical regulator of cancer cell senescence. However, whether loss of CPT1C could induce senescence as a result of lipotoxicity remains unknown. An LC/MS-based lipidomic analysis of PANC-1,MDA-MB-231, HCT-116 and A549 cancer cells was conducted after siRNA depletion of CPT1C. Cellular lipotoxicity was further confirmed by lipotoxicity assays. Significant changes were found in the lipidome of CPT1C-depleted cells, including major alterations in fatty acid, diacylglycerol, triacylglycerol, oxidative lipids, cardiolipin, phosphatidylglycerol, phosphatidylcholine/phosphatidylethanolamine ratio and sphingomyelin. This was coincident with changes in expressions of mRNAs involved in lipogenesis.Histological and biochemical analyses revealed higher lipid accumulation and increased malondialdehyde and reactive oxygen species, signatures of lipid peroxidation and oxidative stress. Reduction of ATP synthesis, loss of mitochondrial transmembrane potential and down-regulation of expression of mitochondriogenesis gene m RNAs indicated mitochondrial dysfunction induced by lipotoxicity, which could further result in cellular senescence. Taken together, this study demonstrated CPT1C plays a critical role in the regulation of cancer cell lipotoxicity and cell senescence, suggesting that inhibition of CPT1C may serve as a new therapeutic strategy through induction of tumor lipotoxicity and senescence. | Huizhen Zhang Yongtao Wang Lihuan Guan Yixin Chen Panpan Chen Jiahong Sun Frank J.Gonzalez Min Huang Huichang Bi | 2021 | Journal of Pharmaceutical Analysis2021，11，3： | 3 |
| 15 | A bone-targeted engineered exosome platform delivering siRNA to treat osteoporosis显示文摘The complex pathogenesis of osteoporosis includes excessive bone resorption,insufficient bone formation and inadequate vascularization,a combination which is difficult to completely address with conventional therapies.Engineered exosomes carrying curative molecules show promise as alternative osteoporosis therapies,but depend on specifically-functionalized vesicles and appropriate engineering strategies.Here,we developed an exosome delivery system based on exosomes secreted by mesenchymal stem cells(MSCs)derived from human induced pluripotent stem cells(iPSCs).The engineered exosomes BT-Exo-siShn3,took advantage of the intrinsic anti-osteoporosis function of these special MSC-derived exosomes and collaborated with the loaded siRNA of the Shn3 gene to enhance the therapeutic effects.Modification of a bone-targeting peptide endowed the BT-Exo-siShn3 an ability to deliver siRNA to osteoblasts specifically.Silencing of the osteoblastic Shn3 gene enhanced osteogenic differentiation,decreased autologous RANKL expression and thereby inhibited osteoclast formation.Furthermore,Shn3 gene silencing increased production of SLIT3 and consequently facilitated vascularization,especially formation of type H vessels.Our study demonstrated that BT-Exo-siShn3 could serve as a promising therapy to kill three birds with one stone and implement comprehensive anti-osteoporosis effects. | Yongzhi Cui Yuanyuan Guo Li Kong Jingyu Shi Ping Liu Rui Li Yongtao Geng Weihang Gao Zhiping Zhang Dehao Fu | 2022 | Bioactive Materials2022，7，4： | 3 |
| 16 | A spatial attentive and temporal dilated(SATD)GCN for skeleton-based action recognition显示文摘Current studies have shown that the spatial-temporal graph convolutional network(STGCN)is effective for skeleton-based action recognition.However,for the existing STGCN-based methods,their temporal kernel size is usually fixed over all layers,which makes them cannot fully exploit the temporal dependency between discontinuous frames and different sequence lengths.Besides,most of these methods use average pooling to obtain global graph feature from vertex features,resulting in losing much fine-grained information for action classification.To address these issues,in this work,the authors propose a novel spatial attentive and temporal dilated graph convolutional network(SATD-GCN).It contains two important components,that is,a spatial attention pooling module(SAP)and a temporal dilated graph convolution module(TDGC).Specifically,the SAP module can select the human body joints which are beneficial for action recognition by a self-attention mechanism and alleviates the influence of data redundancy and noise.The TDGC module can effectively extract the temporal features at different time scales,which is useful to improve the temporal perception field and enhance the robustness of the model to different motion speed and sequence length.Importantly,both the SAP module and the TDGC module can be easily integrated into the ST-GCN-based models,and significantly improve their performance.Extensive experiments on two large-scale benchmark datasets,that is,NTU-RGB+D and Kinetics-Skeleton,demonstrate that the authors’method achieves the state-of-the-art performance for skeleton-based action recognition. | Jiaxu Zhang Gaoxiang Ye Zhigang Tu Yongtao Qin Qianqing Qin Jinlu Zhang Jun Liu | 2022 | CAAI Transactions on Intelligence Technology2022，7，1： | 3 |
| 17 | Correction: The NAC transcription factor ClNAC68 positively regulates sugar content and seed development in watermelon by repressing ClINV and ClGH3.6显示文摘In this article 1,author name Yanping Wang was incorrectly tagged as corresponding author.Prof.Wang should be the co-first author,instead of the corresponding author.The original article has been corrected. | Jinfang Wang Yanping Wang Jie Zhang Yi Ren Maoying Li Shaowei Tian Yongtao Yu Yi Zuo Guoyi Gong Haiying Zhang Shaogui Guo Yong Xu | 2021 | Horticulture Research2021，8，1： | 2 |
| 18 | Ultrathin, Lightweight, and Flexible CNT Buckypaper Enhanced Using MXenes for Electromagnetic Interference Shielding显示文摘Lightweight,flexibility,and low thickness are urgent requirements for next-generation high-performance electromagnetic interference(EMI)shielding materials for catering to the demand for smart and wearable electronic devices.Although several efforts have focused on constructing porous and flexible conductive films or aerogels,few studies have achieved a balance in terms of density,thickness,flexibility,and EMI shielding effectiveness(SE).Herein,an ultrathin,lightweight,and flexible carbon nanotube(CNT)buckypaper enhanced using MXenes(Ti3C2Tx)for high-performance EMI shielding is synthesized through a facile electrophoretic deposition process.The obtained Ti3C2Tx@CNT hybrid buckypaper exhibits an outstanding EMI SE of 60.5 dB in the X-band at 100μm.The hybrid buckypaper with an MXene content of 49.4 wt%exhibits an EMI SE of 50.4 dB in the X-band with a thickness of only 15μm,which is 105%higher than that of pristine CNT buckypaper.Furthermore,an average specific SE value of 5.7×10^(4) dB cm^(2) g^(−1) is exhibited in the 5-μm hybrid buckypaper.Thus,this assembly process proves promising for the construction of ultrathin,flexible,and high-performance EMI shielding films for application in electronic devices and wireless communications. | Rongliang Yang Xuchun Gui Li Yao Qingmei Hu Leilei Yang Hao Zhang Yongtao Yao Hui Mei Zikang Tang | 2021 | Nano-Micro Letters2021，13，4： | 2 |
| 19 | Assistant pullback technique for main span closure of Sutong Bridge显示文摘Sutong Bridge is a cable-stayed steel box girder bridge with a main span of 1 088 m.The erection of upper structure adopts geometry control method and requires no change to the unit's size and the structure's none-stress geometry.Before main span closure,the cantilever of girder reaches 540.8 m,the structure state is noticeably influenced by external circumstances,the main span closure face great difficulty.By abstracting the advantage of the pullback method abroad and the domestic temperature-cutting method,a new assistant pullback method have put forward and bring into practice actually.In this paper,the analysis key point of practice conditions,key parameter of practice,main measures of the method and the performance is introduced. | Chen Ming Luo Chengbin Wu Qihe Zhang Yongtao You Xinpeng | 2009 | Engineering Sciences2009，7，1： | 2 |
| 20 | Spatial Distribution and Environmental Determinants of Denitrification Enzyme Activity in Reed-Dominated Raised Fields显示文摘Denitrification is an important process of nitrogen removal in lake ecosystems.However,the importance of denitrification across the entire soil-depth gradients including subsurface layers remains poorly understood.This study aims to determine the spatial pattern of soil denitrification enzyme activity(DEA) and its environmental determinants across the entire soil depth gradients in the raised fields in Baiyang Lake,North China.In two different zones of the raised fields(i.e.,water boundary vs.main body of the raised fields),the soil samples from 1.0 m to 1.1 m depth were collected,and the DEA and following environmental determinants were quantified:soil moisture,p H,total nitrogen(TN),ammonia nitrogen(NH4+-N),nitrate nitrogen(NO3–-N),total organic carbon(TOC),and rhizome biomass of Phragmites australis.The results showed that the soil DEA and environmental factors had a striking zonal distribution across the entire soil depth gradients.The soil DEA reached two peak values in the upper and middle soil layers,indicating that denitrification are important in both topsoil and subsurface of the raised fields.The correlation analysis showed that the DEA is negatively correlated with the soil depth(p < 0.05).However,this phenomenon did not occur in the distance to the water edge,except in the upper layers(from 0.2 m to 0.7 m) of the boundary zone of the raised fields.In the main body of the raised fields,the DEA level remained high;however,it showed no significant relationship with the distance to the water edge.The linear regression analysis showed significant positive correlation of the DEA with the soil TN,NO3–-N,NH4+-N,and TOC;whereas it showed negative correlation with soil p H.No significant correlations with soil moisture and temperature were observed.A positive correlation was also found between the DEA and rhizome biomass of P.australis. | LAN Yan CUI Baoshan HAN Zhen LI Xia LI Fengju ZHANG Yongtao | 2015 | Chinese Geographical Science2015，25，4： | 2 |
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