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| 1 | Erianin,a novel dibenzyl compound in Dendrobium extract,inhibits lung cancer cell growth and migration via calcium/calmodulin-dependent ferroptosis显示文摘Ferroptosis,a novel form of programmed cell death,is characterized by iron-dependent lipid peroxidation and has been shown to be involved in multiple diseases,including cancer.Stimulating ferroptosis in cancer cells may be a potential strategy for cancer therapy.Therefore,ferroptosis-inducing drugs are attracting more attention for cancer treatment.Here,we showed that erianin,a natural product isolated from Dendrobium chrysotoxum Lindl,exerted its anticancer activity by inducing cell death and inhibiting cell migration in lung cancer cells.Subsequently,we demonstrated for the first time that erianin induced ferroptotic cell death in lung cancer cells,which was accompanied by ROS accumulation,lipid peroxidation,and GSH depletion.The ferroptosis inhibitors Fer-1 and Lip-1 but not Z-VAD-FMK,CQ,or necrostatin-1 rescued erianin-induced cell death,indicating that ferroptosis contributed to erianin-induced cell death.Furthermore,we demonstrated that Ca^(2+)/CaM signaling was a critical mediator of erianin-induced ferroptosis and that blockade of this signaling significantly rescued cell death induced by erianin treatment by suppressing ferroptosis.Taken together,our data suggest that the natural product erianin exerts its anticancer effects by inducing Ca^(2+)/CaMdependent ferroptosis and inhibiting cell migration,and erianin will hopefully serve as a prospective compound for lung cancer treatment. | Peng Chen Qibiao Wu Jiao Feng Lili Yan Yitian Sun Shuiping Liu Yu Xiang Mingming Zhang Ting Pan Xiaying Chen Ting Duan Lijuan Zhai Bingtao Zhai Wengang Wang Ruonan Zhang Bi Chen Xuemeng Han Yicong Li Liuxi Chen Ying Liu Xingxing Huang Ting Jin Wenzheng Zhang Hong Luo Xiaohui Chen Yongqiang Li Qiujie Li Guohua Li Qin Zhang Lvjia Zhuo Zuyi Yang Huifen Tang Tian Xie Xiaoping Ouyang Xinbing Sui | 2020 | Signal Transduction and Targeted Therapy2020,5,1: | 42 |
| 2 | Effect of seawater on incident plane P and SV waves at ocean bottom and engineering characteristics of offshore ground motion records off the coast of southern California, USA显示文摘The effect of seawater on vertical ground motions is studied via a theoretical method and then actual offshore ground motion records are analyzed using a statistical method. A theoretical analysis of the effect of seawater on incident plane P and SV waves at ocean bottom indicate that on one hand, the affected frequency range of vertical ground motions is prominent due to P wave resonance in the water layer if the impedance ratio between the seawater and the underlying medium is large, but it is greatly suppressed if the impedance ratio is small; on the other hand, for the ocean bottom interface model selected herein, vertical ground motions consisting of mostly P waves are more easily affected by seawater than those dominated by SV waves. The statistical analysis of engineering parameters of offshore ground motion records indicate that:(1) Under the infl uence of softer surface soil at the seafl oor, both horizontal and vertical spectral accelerations of offshore motions are exaggerated at long period components, which leads to the peak spectral values moving to a longer period.(2) The spectral ratios(V/H) of offshore ground motions are much smaller than onshore ground motions near the P wave resonant frequencies in the water layer; and as the period becomes larger, the effect of seawater becomes smaller, which leads to a similar V/H at intermediate periods(near 2 s). These results are consistent with the conclusions of Boore and Smith(1999), but the V/H of offshore motion may be smaller than the onshore ground motions at longer periods(more than 5 s). | Diao Hongqi Hu Jinjun Xie Lili | 2014 | Earthquake Engineering and Engineering Vibration2014,13,2: | 24 |
| 3 | Baicalin induces ferroptosis in bladder cancer cells by downregulating FTH1显示文摘Ferroptosis is a non-apoptotic regulated cell death caused by iron accumulation and subsequent lipid peroxidation.Currently,the therapeutic role of ferroptosis on cancer is gaining increasing interest.Baicalin an active component in Scutellaria baicalensis Georgi with anticancer potential various cancer types;however,the effects of baicalein on bladder cancer and the underlying molecular mechanisms remain largely unknown.In the study,we investigated the effect of baicalin on bladder cancer cells5637 and KU-19-19.As a result,we show baicalin exerted its anticancer activity by inducing apoptosis and cell death in bladder cancer cells.Subsequently,we for the first time demonstrate baicalin-induced ferroptotic cell death in vitro and in vivo,accompanied by reactive oxygen species(ROS) accumulation and intracellular chelate iron enrichment.The ferroptosis inhibitor deferoxamine but not necrostatin-1,chloroquine(CQ),N-acetyl-L-cysteine,L-glutathione reduced,or carbobenzoxy-valyl-alanyl-aspartyl-[O-methyl]-fluoromethylketone(Z-VAD-FMK) rescued baicalin-induced cell death,indicating ferroptosis contributed to baicalin-induced cell death.Mechanistically,we show that ferritin heavy chain1(FTH1) was a key determinant for baicalin-induced ferroptosis.Overexpression of FTH1 abrogated the anticancer effects of baicalin in both 5637 and KU19-19 cells.Taken together,our data for the first time suggest that the natural product baicalin exerts its anticancer activity by inducing FTH1-dependent ferroptosis,which will hopefully provide a prospective compound for bladder cancer treatment. | Na Kong Xiaying Chen Jiao Feng Ting Duan Shuiping Liu Xueni Sun Peng Chen Ting Pan Lili Yan Ting Jin Yu Xiang Quan Gao Chengyong Wen Weirui Ma Wencheng Liu Mingming Zhang Zuyi Yang Wengang Wang Ruonan Zhang Bi Chen Tian Xie Xinbing Sui Wei Tao | 2021 | Acta Pharmaceutica Sinica B2021,11,12: | 23 |
| 4 | Attenuation of peak ground accelerations from the great Wenchuan earthquake显示文摘Over 800 accelerograms recorded by 272 ground-level stations during the Wenchuan earthquake are used to analyze the influence of rupture distance,local site conditions and azimuth on peak ground accelerations(PGAs).To achieve a better understanding of the characteristics of ground motions,the spatial distributions of the EW,NS and UD components of PGAs are obtained.Comparisons between the EW and NS components,the fault-normal and fault-parallel components,and the vertical and horizontal components of PGAs are performed,and the regression formula of the vertical-to-horizontal ratio of PGAs is developed.The attenuation relationship of peak horizontal accelerations(PHAs) is compared with several contemporary attenuation relationships.In addition,an analysis of residuals is conducted to identify the potential effects of rupture distance,azimuth and site conditions on the observed values of PHAs.The analysis focuses on medium-hard soil site conditions,as they provided most of the data used in this study. | Wang Dong Xie Lili | 2009 | Earthquake Engineering and Engineering Vibration2009,8,2: | 14 |
| 5 | Design, synthesis and biological evaluation of chalcone analogues with novel dual antioxidant mechanisms as potential anti-ischemic stroke agents显示文摘Scavenging reactive oxygen species(ROS) by antioxidants is the important therapy to cerebral ischemia-reperfusion injury(CIRI) in stroke. The antioxidant with novel dual-antioxidant mechanism of directly scavenging ROS and indirectly through antioxidant pathway activation may be a promising CIRI therapeutic strategy. In our study, a series of chalcone analogues were designed and synthesized, and multiple potential chalcone analogues with dual antioxidant mechanisms were screened. Among these compounds, the most active 33 not only conferred cytoprotection of H2 O2-induced oxidative damage in PC12 cells through scavenging free radicals directly and activating NRF2/ARE antioxidant pathway at the same time, but also played an important role against ischemia/reperfusion-related brain injury in animals. More importantly, in comparison with mono-antioxidant mechanism compounds, 33 exhibited higher cytoprotective and neuroprotective potential in vitro and in vivo. Overall, our findings showed compound 33 couldemerge as a promising anti-ischemic stroke drug candidate and provided novel dual-antioxidant mechanism strategies and concepts for oxidative stress-related diseases treatment. | Jiabing Wang Lili Huang Chanchan Cheng Ge Li Jingwen Xie Mengya Shen Qian Chen Wulan Li Wenfei He Peihong Qiu Jianzhang Wu | 2019 | Acta Pharmaceutica Sinica B2019,9,2: | 13 |
| 6 | Graphene-supported nanoscale zero-valent iron:Removal of phosphorus from aqueous solution and mechanistic study显示文摘Excess phosphorus from non-point pollution sources is one of the key factors causing eutrophication in many lakes in China,so finding a cost-effective method to remove phosphorus from non-point pollution sources is very important for the health of the aqueous environment. Graphene was selected to support nanoscale zero-valent iron(nZVI)for phosphorus removal from synthetic rainwater runoff in this article. Compared with nZVI supported on other porous materials,graphene-supported nZVI(G-nZVI) could remove phosphorus more efficiently. The amount of nZVI in G-nZVI was an important factor in the removal of phosphorus by G-nZVI,and G-nZVI with 20 wt.% nZVI(20% G-nZVI)could remove phosphorus most efficiently. The nZVI was very stable and could disperse very well on graphene,as characterized by transmission electron microscopy(TEM) and scanning electron microscopy(SEM). X-ray photoelectron spectroscopy(XPS),Fourier Transform infrared spectroscopy(FT-IR) and Raman spectroscopy were used to elucidate the reaction process,and the results indicated that Fe-O-P was formed after phosphorus was adsorbed by G-nZVI. The results obtained from X-ray diffraction(XRD) indicated that the reaction product between nZVI supported on graphene and phosphorus was Fe3(PO4)2·8H2O(Vivianite). It was confirmed that the specific reaction mechanism for the removal of phosphorus with nZVI or G-nZVI was mainly due to chemical reaction between nZVI and phosphorus. | Fenglin Liu JingHe Yang Jiane Zuo Ding Ma Lili Gan Bangmi Xie Pei Wang Bo Yang | 2014 | Journal of Environmental Sciences2014,26,8: | 12 |
| 7 | Hydrographic field investigations in the Northern South China Sea by open cruises during 2004-2013显示文摘 | Lili Zeng Qiang Wang Qiang Xie Ping Shi Lei Yang Yeqiang Shu Ju Chen Dandan Sui Yunkai He Rongyu Chen Dongxiao Wang | 2015 | Science Bulletin2015,60,6: | 10 |
| 8 | Response spectra for nuclear structures on rock sites considering the near-fault directivity effect显示文摘Near-fault ground motions, potentially with large amplitude and typical velocity pulses, may signifi cantly impact the performance of a wide range of structures.The current study is aimed at evaluating the safety implications of the near-fault effect on nuclear power plant facilities designed according to the Chinese code.To this end, a set of near-fault ground motions at rock sites with typical forward-directivity effect is examined with special emphasis on several key parameters and response spectra.Spectral comparison of the selected records with the Chinese and other code design spectra was conducted.The bi-normalized response spectra in terms of different corner periods are utilized to derive nuclear design spectra.It is concluded that nuclear design spectra on rock sites derived from typical rupture directivity records are significantly influenced both by the earthquake magnitude and the rupture distance.The nuclear design spectra specified in the code needs to be adjusted to reflect the near-fault directivity effect of large earthquakes. | Xu Longjun Yang Shengchao Xie Lili | 2010 | Earthquake Engineering and Engineering Vibration2010,9,3: | 9 |
| 9 | Porphyromonas gingivalis disrupts vascular endothelial homeostasis in a TLR-NF-κB axis dependent manner显示文摘Cardiovascular disease is still the leading cause of mortality worldwide.Vascular endothelial dysfunction is viewed as the initial step of most cardiovascular diseases.Many studies have indicated that periodontal pathogens,especially Porphyromonas gingivalis,are closely correlated with vascular endothelial homeostasis,but the function of P.gingivalis and the underlying mechanisms are still elusive.To illuminate the effects and elucidate the mechanisms of P.gingivalis on endothelial structural integrity,we developed P.gingivalis infection models in vivo and in vitro.Endothelial cell proliferation,differentiation and apoptosis were detected.Here,we showed that P.gingivalis can impair endothelial integrity by inhibiting cell proliferation and inducing endothelial mesenchymal transformation and apoptosis of endothelial cells,which reduce the cell levels and cause the endothelium to lose its ability to repair itself.A mechanistic analysis showed that TLR antagonist or NF-κB signalling inhibitor can largely rescue the damaged integrity of the endothelium caused by P.gingivalis,suggesting that TLR-NF-κB signalling plays a vital role in vascular endothelial homeostasis destroyed by P.gingivalis.These results suggest a potential intervention method for the prevention and treatment of cardiovascular disease. | Mengru Xie Qingming Tang Shaoling Yu Jiwei Sun Feng Mei Jiajia Zhao Lili Chen | 2020 | International Journal of Oral Science2020,12,3: | 9 |
| 10 | Cross-cultural adaption and psychometric properties of the Chinese version of the Diabetes Behavior Rating Scale: a pilot study显示文摘Self-care behavior plays a major role in diabetic management. However, in China, a satisfactory instrument has not yet been developed to evaluate the compliance of self-care behavior for young patients with type 1 diabetes mellitus(T1 DM). The Diabetes Behavior Rating Scale(DBRS) has a potential to be the first mature instrument. The purpose of this study is to cross-culturally adapt the DBRS, and preliminarily evaluate its psychometric properties. The instrument translation included translation, back translation and culture adaptation. Psychometric properties were assessed in a sample of 116 young patients with T1 DM adapting insulin injection therapy. The Chinese version of the DBRS was divided to four subscales. Cronbach's α for the total scale was 0.92. The mean inter-item and item-total correlations were 0.35 and 0.54 respectively. Test-retest reliability showed good temporal stability(r=0.81, P=0.001). Negative correlations were found between DBRS scores with the Diabetes Distress Scale scores(r=.0.32, P=0.003) and hemoglobin A1 c(HbA1 c) levels(r=.0.36, P=0.002). Higher DBRS scores correlated with better glycemic control. The Chinese insulin injection therapy version of the DBRS is well translated and culturally adapted. It shows good overall reliability and validity and appears to be a valuable tool for assessing the diabetic self-care behaviors for young patients with T1 DM. | Jing Zhu Jingjing Xu Yang Chen Yong Gu Li Ji Yufeng Zhou Min Zhu Hsiang-Ting Hsu Xiaoping Huang Cuiping Yuan Yun Shi Dan Yan Lili Xie Shuang Chen Tao Yang Wei He | 2018 | Science China(Life Sciences)2018,61,3: | 6 |
| 11 | Oleic Acid and Eicosapentaenoic Acid Reverse Palmitic Acid-induced Insulin Resistance in Human HepG2 Cells via the Reactive Oxygen Species/JUN Pathway显示文摘Oleic acid(OA),a monounsaturated fatty acid(MUFA),has previously been shown to reverse saturated fatty acid palmitic acid(PA)-induced hepatic insulin resistance(IR).However,its underlying molecular mechanism is unclear.In addition,previous studies have shown that eicosapentaenoic acid(EPA),aω-3 polyunsaturated fatty acid(PUFA),reverses PA-induced muscle IR,but whether EPA plays the same role in hepatic IR and its possible mechanism involved need to be further clarified.Here,we confirmed that EPA reversed PA-induced IR in HepG2 cells and compared the proteomic changes in HepG2 cells after treatment with different free fatty acids(FFAs).A total of 234 proteins were determined to be differentially expressed after PA+OA treatment.Their functions were mainly related to responses to stress and endogenous stimuli,lipid metabolic process,and protein binding.For PA+EPA treatment,the PA-induced expression changes of 1326 proteins could be reversed by EPA,415 of which were mitochondrial proteins,with most of the functional proteins involved in oxidative phosphorylation(OXPHOS)and tricarboxylic acid(TCA)cycle.Mechanistic studies revealed that the protein encoded by JUN and reactive oxygen species(ROS)play a role in OA-and EPA-reversed PA-induced IR,respectively.EPA and OA alleviated PA-induced abnormal adenosine triphosphate(ATP)production,ROS generation,and calcium(Ca^(2+))content.Importantly,H_(2)O_(2)-activated production of ROS increased the protein expression of JUN,further resulting in IR in HepG2 cells.Taken together,we demonstrate that ROS/JUN is a common response pathway employed by HepG2 cells toward FFA-regulated IR. | Yaping Sun Jifeng Wang Xiaojing Guo Nali Zhu Lili Niu Xiang Ding Zhensheng Xie Xiulan Chen Fuquan Yang | 2021 | Genomics, Proteomics & Bioinformatics2021,19,5: | 6 |
| 12 | A microporous surface containing Si3N4/Ta microparticles of PEKK exhibits both antibacterial and osteogenic activity for inducing cellular response and improving osseointegration显示文摘As an implantable biomaterial,polyetherketoneketone(PEKK)exhibits good mechanical strength but it is biologically inert while tantalum(Ta)possesses outstanding osteogenic bioactivity but has a high density and elastic modulus.Also,silicon nitride(SN)has osteogenic and antibacterial activity.In this study,a microporous surface containing both SN and Ta microparticles on PEKK(STP)exhibiting excellent osteogenic and antibacterial activity was created by sulfonation.Compared with sulfonated PEKK(SPK)without microparticles,the surface properties(roughness,surface energy,hydrophilicity and protein adsorption)of STP significantly increased due to the SN and Ta particles presence on the microporous surface.In addition,STP also exhibited outstanding antibacterial activity,which inhibited bacterial growth in vitro and prevented bacterial infection in vivo because of the presence of SN particles.Moreover,the microporous surface of STP containing both SN and Ta particles remarkably induced response(e.g.,proliferation and differentiation)of rat bone mesenchymal stem(rBMS)cells in vitro.Furthermore,STP significantly improved new bone regeneration and osseointegration in vivo.Regarding the induction of cellular response in vitro and improvement of osseointegration in vivo,the microporous surface containing Ta was better than the surface with SN particles.In conclusion,STP with optimized surface properties activated cellular responses in vitro,enhanced osseointegration and prevented infection in vivo.Therefore,STP possessed the dual biofunctions of excellent osteogenic and antibacterial activity,showing great potential as a bone substitute. | Xinglong Hu Shiqi Mei Fan Wang Songchao Tang Dong Xie Chao Ding Wenli Du Jun Zhao Lili Yang Zhaoying Wu Jie Wei | 2021 | Bioactive Materials2021,6,10: | 6 |
| 13 | Implantable PEKK/tantalum microparticles composite with improved surface performances for regulating cell behaviors,promoting bone formation and osseointegration显示文摘Polyetherketoneketone(PEKK)exhibits admirable biocompatibility and mechanical performances but bioinert while tantalum(Ta)possesses excellent osteogenesis and osseointegration but high elastic modulus and density,and processing is too difficult and expensive.In the present study,combining of the advantages of both PEKK and Ta,implantable composites of PEKK/Ta were fabricated by blending PEKK with Ta microparticles of 20 v%(PT20)and 40 v%(PT40)content.In comparison with PT20 and PEKK,the surface hydrophilicity,surface energy,roughness and proteins adsorption as well as mechanical performances of PT40 significantly increased because of the higher Ta particles content in PEKK.Furthermore,PT40 exhibited the mechanical performances(e.g.,compressive strength and modulus of elasticity)close to the cortical bone of human.Compared with PT20 and PEKK,PT40 with higher Ta content remarkably enhanced the responses(including adhesion,proliferation and osteogenic differentiation)of MC3T3-E1 cells in vitro.Moreover,PT40 markedly improved bone formation as well as osseointegration in vivo.In short,incorporation of Ta microparticles into PEKK created implantable composites with improved surface performances,which played key roles in stimulating cell responses/bone formation as well as promoting osseointegration.PT40 might have great potential for bear-loading bone substitute. | Xinglong Hu Shiqi Mei Fan Wang Jun Qian Dong Xie Jun Zhao Lili Yang Zhaoying Wu Jie Wei | 2021 | Bioactive Materials2021,6,4: | 6 |
| 14 | An ATF24 peptide-functionalized β-elemene-nanostructured lipid carrier combined with cisplatin for bladder cancer treatment显示文摘Objective:In this study,we aimed to develop an amino-terminal fragment(ATF)peptide-targeted liposome carryingβ-elemene(ATF24-PEG-Lipo-β-E)for targeted delivery into urokinase plasminogen activator receptor-overexpressing bladder cancer cells combined with cisplatin(DDP)for bladder cancer treatment.Methods:The liposomes were prepared by ethanol injection and high-pressure microjet homogenization.The liposomes were characterized,and the drug content,entrapment efficiency,andin vitro release were studied.The targeting efficiency was investigated using confocal microscopy,ultra-fast liquid chromatography,and an orthotopic bladder cancer model.The effects of ATF24-PEG-Lipo-β-E combined with DDP on cell viability and proliferation were evaluated by a Cell Counting Kit-8(CCK-8)assay,a colony formation assay,and cell apoptosis and cell cycle analyses.The anticancer effects were evaluated in a KU-19-19 bladder cancer xenograft model.Results:ATF24-PEG-Lipo-β-E had small and uniform sizes(~79 nm),high drug loading capacity(~5.24 mg/mL),high entrapment efficiency(98.37±0.95%),and exhibited sustained drug release behavior.ATF24-PEG-Lipo-β-E had better targeting efficiency and higher cytotoxicity than polyethylene glycol(PEG)ylatedβ-elemene liposomes(PEG-Lipo-β-E).DDP,combined with ATF24-PEG-Lipo-β-E,exerted a synergistic effect on cellular apoptosis and cell arrest at the G2/M phase,and these effects were dependent on the caspase-dependent pathway and Cdc25C/Cdc2/cyclin B1 pathways.Furthermore,thein vivo antitumor activity showed that the targeted liposomes effectively inhibited the growth of tumors,using the combined strategy.Conclusions:The present study provided an effective strategy for the targeted delivery ofβ-elemene(β-E)to bladder cancer,and a combined strategy for bladder cancer treatment. | Bingtao Zhai Peng Chen Wengang Wang Shuiping Liu Jiao Feng Ting Duan Yu Xiang Ruonan Zhang Mingming Zhang Xuemeng Han Xiaying Chen Qiujie Li Guohua Li Ying Liu Xingxing Huang Wenzheng Zhang Ting Pan Lili Yan Ting Jin Tian Xie Xinbing Sui | 2020 | Cancer Biology & Medicine2020,17,3: | 5 |
| 15 | Study on Quantum Trust Model Based on Node Trust Evaluation显示文摘Trust is the premise and foundation of secure communication,no matter in the quantum communication or classical communication.In fact,the existing quantum secure communication protocols and technologies are implicitly related to trust;or assume some trust premise in advance;or create or obtain a trust relationship.This paper studies on quantum trust model using node trust evaluation based on author’s own research achievements.We introduce the trust management into quantum communication network to build secure trusted quantum communication network based on evaluating the trust values of nodes,which are used to evaluate the reliability of each user.We put forward a scheme of quantum trust model based on node trust evaluation,and describe the thought and process of trust evaluation in detail based on the principles of quantum entanglement and quantum teleportation.We analyze the feasibility and safety of this scheme,which provides a new thinking and method for establishing a credible secure quantum communication network. | ZHANG Shibin XIE Zhihai YIN Yifen CHANG Yan SHENG Zhiwei YAN Lili WANG Haichun HAN Guihua HUANG Yuanyuan WAN Guogen | 2017 | Chinese Journal of Electronics2017,26,3: | 5 |
| 16 | Effect of Nb^(5+)and Cu^(2+)codoping on thermal properties of Gd_(2)Zr_(2)O_(7)ceramic显示文摘In this work,Nb^(5+)and Cu^(2+)were selected to partially substitute Zr4+in Gd_(2)Zr_(2)O_(7)for studying the phase structure,microscopic morphology and thermal properties.Gd_(2)(Zr_(1-3 x/2)Nb_(x)CU_(x/2))_(2)O_(7)(x=0,0.05,0.1,0.15,0.2,0.25)ceramic materials were synthesized by high-temperature solid-state reaction method.The results show that the Gd_(2)(Zr_(1-3 x/2)Nb_(x)Cu_(x)/2)_(2)O_(7)ceramics present cubic pyrochlore structure with clear grain boundaries and dense cell structure.And the thermal expansion coefficient of Gd_(2)(Zr_(1-3 x/2)Nb_(x)Cu_(x/2))_(2)O_(7)ceramics gradually decreases because of the incorporation of Nb^(5+)and Cu^(2+)into Zr-site in Gd_(2)Zr_(2)O_(7).Meanwhile,its thermal conductivity decreases firstly and then increases with the doping of Nb^(5+)and Cu^(2+),which reaches the lowest value for the composition of Gd_(2)(Zr_(0.85)Nb_(0.1)Cu_(0.05))_(2)O_(7). | Tao Jiang Min Xie Lili Guan Xuanli Wang Xiwen Song | 2021 | Journal of Rare Earths2021,39,2: | 5 |
| 17 | Recent Development in X-Ray Imaging Technology:Future and Challenges显示文摘X-ray imaging is a low-cost,powerful technology that has been extensively used in medical diagnosis and industrial nondestructive inspection.The ability of X-rays to penetrate through the body presents great advances for noninvasive imaging of its internal structure.In particular,the technological importance of X-ray imaging has led to the rapid development of highperformance X-ray detectors and the associated imaging applications.Here,we present an overview of the recent development of X-ray imaging-related technologies since the discovery of X-rays in the 1890s and discuss the fundamental mechanism of diverse X-ray imaging instruments,as well as their advantages and disadvantages on X-ray imaging performance.We also highlight various applications of advanced X-ray imaging in a diversity of fields.We further discuss future research directions and challenges in developing advanced next-generation materials that are crucial to the fabrication of flexible,low-dose,highresolution X-ray imaging detectors. | Xiangyu Ou Xue Chen Xianning Xu Lili Xie Xiaofeng Chen Zhongzhu Hong Hua Bai Xiaowang Liu Qiushui Chen Lin Li Huanghao Yang | 2021 | Research2021,,1: | 5 |
| 18 | Green's function of multi-layered poroelastic half-space for models of ground vibration due to railway traffic显示文摘This study proposes a Green’s function,an essential representation of water-saturated ground under moving excitation,to simulate ground borne vibration from trains.First,general solutions to the governing equations of poroelastic medium are derived by means of integral transform.Secondly,the transmission and reflection matrix approach is used to formulate the relationship between displacement and stress of the stratified ground,which results in the matrix of the Green’s function.Then the Green’s function is combined into a train-track-ground model,and is verified by typical examples and a field test.Additional simulations show that the computed ground vibration attenuates faster in the immediate vicinity of the track than in the surrounding area.The wavelength of wheel-rail unevenness has a notable effect on computed displacement and pore pressure.The variation of vibration intensity with the depth of ground is significantly influenced by the layering of the strata soil.When the train speed is equal to the velocity of the Rayleigh wave,the Mach cone appears in the simulated wave field.The proposed Green’s function is an appropriate representation for a layered ground with shallow ground water table,and will be helpful to understand the dynamic responses of the ground to complicated moving excitation. | Wang Futong Tao Xiaxin Xie Lili Siddharthan Raj | 2017 | Earthquake Engineering and Engineering Vibration2017,16,2: | 5 |
| 19 | Strong motion characteristics of the M_w 6.6 Lushan earthquake,Sichuan,China——an insight into the spatial difference of a typical thrust fault earthquake显示文摘Near-field strong ground motions are useful for engineering seismology studies and seismic design, but dense observation networks of damaging earthquakes are still rare. In this study, based on the strong-motion data from the M w 6.6 Lushan earthquake, the ground motion parameters in different spatial regions are systematically analyzed, and the contributions from different effects, like the hanging-wall effect, directivity effect, and attenuation effect are separated to the extent possible. Different engineering parameters from the observed ground motions are compared with the local design response spectra and a new attenuation relation of Western China. General results indicate that the high frequency ground motion, like the peak ground acceleration, on two sides of the fault plane is sensitive to the hanging-wall effect, whereas the low frequency ground motion, like the long period spectral acceleration, in the rupture propagation direction is affected by the directivity effect. Moreover, although the M w 6.6 Lushan earthquake is not a large magnitude event, the spatial difference of ground motion is still obvious; thus, for a thrust faulting earthquake, in addition to the hanging effect, the directivity effect should also be considered. | Hu Jinjun Zhang Wenbo Xie Lili Zhang Qi Jiang Zhijun | 2015 | Earthquake Engineering and Engineering Vibration2015,14,2: | 5 |
| 20 | Zeolite (Na) modified by nano-Fe particles adsorbing phosphate in rainwater runoff显示文摘Zeolite (Na) modified by self-synthesized nano-Fe particles was used as infiltration media to adsorb phosphate in rainwater runoff. The adsorption capacities increased up to 75 times that of natural zeolite at a saturated equilibrium phosphate concentration of 0.42 mg/L. The correlation of capacity and material-specific surface area indicated that specific surface area was not the key factor contributing to the capacity improvement. SEM and XRD analysis showed that chemical reaction between Fe and P to form new products like cacoxenite is the main reason for the increased capacity, and that the method of adding metal ions or particles to improve the adsorption capacity for phosphate is feasible. | Lili Gan Jiane Zuo Bangmi Xie Peng Li Xia Huang | 2012 | Journal of Environmental Sciences2012,24,11: | 5 |