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| 1 | Field investigation on severely damaged aseismic buildings in 2014 Ludian earthquake显示文摘The 2014 magnitude 6.5 Ludian earthquake caused a death toll of 617, many landslides and tens of thousands of collapsed buildings. A field investigation to evaluate the damage to buildings was carried out immediately after the occurrence of the earthquake. Severely damaged aseismic buildings, which were basically observed in the downtown of Longtoushan Town, were carefully examined one by one with the aim to improve design codes. This paper summarizes the damage observed to the investigated aseismic buildings in both the structural and local levels. A common failure mode was observed that most of the aseismic buildings, such as RC frame structures and confined masonry structures, were similarly destroyed by severe damage or complete collapse of the first story. The related strong ground motion, which was recorded at the nearby station, had a short duration of less than 20 s but a very large PGA up to 1.0 g. The RC frames based on the new design codes still failed to achieve the design target for 'strong column, weak beam'. Typical local failure details, which were related to the interaction between RC columns and infill walls and between constructional columns and masonry walls, are summarized with preliminary analyses. | Lin Xuchuan Zhang Haoyu Chen Hongfu Chen Hao Lin Junqi | 2015 | Earthquake Engineering and Engineering Vibration2015,14,1: | 12 |
| 2 | Image Smearing Modeling and Verification for Strapdown Star Sensor显示文摘To further extend study on celestial attitude determination with strapdown star sensor from static into dynamic field, one prerequisite is to generate precise dynamic simulating star maps. First a neat analytical solution of the smearing trajectory caused by spacecraft attitude maneuver is deduced successfully, whose parameters cover the geometric size of optics, three-axis angular velocities and CCD integral time. Then for the first time the mathematical law and method are discovered about how to synthesize the two formulae of smearing trajectory and the static Gaussian distribution function (GDF) model, the key of which is a line integral with regard to the static GDF attenuated by a factor 1/ L s (L s is the arc length of the smearing trajectory) along the smearing trajectory. The dynamic smearing model is then obtained, also in an analytical form. After that, three sets of typical simulating maps and data are simulated from this dynamic model manifesting the expected smearing effects, also compatible with the linear model as its special case of no boresight rotation. Finally, model validity tests on a rate turntable are carried out, which results in a mean correlation coefficient 0.920 0 between the camera images and the corresponding model simulated ones with the same parameters. The sufficient similarity verifies the validity of the dynamic smearing model. This model, after parameter calibration, can serve as a front-end loop of the ground semi-physical simulation system for celestial attitude determination with strapdown star sensor. | WANG Haiyong ZHOU Wenrui CHENG Xuan LIN Haoyu | 2012 | Chinese Journal of Aeronautics2012,25,1: | 8 |
| 3 | DJ-1 is involved in the multidrug resistance of SGC7901 gastric cancer cells through PTEN/PI3K/Akt/Nrf2 pathway显示文摘Gastric cancer is a common malignancy worldwide.The occurrence of multidrug resistance(MDR)is the major obstacle for effective gastric cancer chemotherapy.In this study,the in-depth molec-ular mechanism of the DJ-1-induced MDR in SGC7901 gastric cancer cells was investigated.The results showed that DJ-1 expression level was higher in MDR variant SGC7901NCR cells than that in its parental SGC7901 cells.Moreover,DJ-1 overexpression conferred the MDR phenotype to SGC7901 cells,while DJ-1 knockdown in SGC7901NCR cells induced re-sensitization to adriamycin,vincristine,cisplatin,and 5-fluorouracil.These results suggested that DJ-1 mediated the develop-ment of MDR in SGC7901 gastric cancer cells.Importantly,further data revealed that the activation of PI3k/Akt and Nrf2 signaling pathway were required for the DJ-1-induced MDR phenotype in SGC7901 gastric cancer cells.Meanwhile,we found that Pl3k/Akt pathway was activated probably through DJ-1 directly binding to and negatively regulating PTEN,consequently resulting in Nrf2 phosphorylation and activation,and thereby inducing Nrf2-dependent P-glycoprotein(P-gp)and Bcl-2 expressions in the DJ-1-mediated MDR of SGC7901 gastric cancer cells.Overall,these results revealed that activating PTEN/PI3K/Akt/Nrf2 pathway and subsequently upregulating P-gp and Bcl-2 expression could be a critical mechanism by which DJ-1 mediates the development of MDR in SGC7901 gastric cancer cells.The new findings may be helpful for understanding the mechanisms of MDR in gastric cancer cells,prompting its further investigation as a molecular target to overcome MDR. | Lejia Qiu Zhaoxia Ma Xiaoran Li Yizhang Deng Guangling Duan Le Zhao Xingwang Xu Lin Xiao Haoyue Liu Zhengming Zhu Heping Chen | 2020 | Acta Biochimica et Biophysica Sinica2020,52,11: | 5 |
| 4 | Trace Elements in Sphalerite from the Dadongla Zn-Pb Deposit, Western Hunan-Eastern Guizhou Zn-Pb Metallogenic Belt, South China显示文摘The western Hunan-eastern Guizhou Zn-Pb metallogenic belt is one of the important Zn-Pb mineralization regions in China.The Dadongla deposit,located in the northeast of Guizhou Province,is one of the typical Zn-Pb deposits in the region and has estimated resources more than 12 million metric tons(Mt)with an average grade of 4.11 wt%Zn+Pb.Its orebodies are hosted in the lower Cambrian Aoxi Formation dolomite,occurring as bedded,para-bedded in shape,and in conformity with the wall rock.The ore mineral assemblage is simple,dominated by sphalerite with minor pyrite and galena,and the gangue minerals are composed of dolomite,calcite with minor bitumen and barite.In view of the lack of geological and geochemical researches,the genesis of Zn-Pb ore is still unclear.Laser ablation-inductively coupled plasma mass spectrometry(LA-ICPMS)spot and mapping analyses were used to obtain sphalerite trace element chemistry in the Dadongla Zn-Pb deposit in Guizhou,China,aiming to constrain its ore genesis.The results show that sphalerite is characterized by the enrichment of Cd,Fe,Ge and Hg,corresponding with that of typical MVT deposits.Four zones were identified in the sphalerite crystal from Dadongla from the center to margin according to the color bands.in which the zone in the center,representing the early ore-stage sphalerite,is characterized by enrichment of Cd relatively,while the zone forming at late ore-stage is enriched in Ge and Hg relatively.The finding was controlled by differential leached metals content in ore-forming fluid from its source rock.Notably,critical element Ge trends to be enriched at the late ore-stage and follows a substitution of 2 Zn^2+(?)Ge^4++□(vacancy).Moreover,the calculated ore-forming temperature ranges from 79.9℃to 177.6℃by the empirical formula,which is similar to that of typical Mississippi Valley-type(MVT)deposits.Compared with the features of trace elements in sphalerite from different types of deposits,together with the geology,the Dadongla deposit belongs to an MVT Zn-Pb deposit. | HU Yusi YE Lin WEI Chen LI Zhenli HUANG Zhilong WANG Haoyu | 2020 | Acta Geologica Sinica(English Edition)2020,94,6: | 3 |
| 5 | Effects of nitric oxide treatment on flavour compounds and antioxidant enzyme activities of button mushroom (Agaricus bisporus) during storage显示文摘Button mushroom(Agaricus bisporus)is sold well for its unique flavour and nutritional benefits.However,the mushroom flavour deteriorates quickly during storage because of its delicate structure and high moisture.In this study,the effects of nitric oxide(NO)application on flavour compounds and antioxidant enzyme activities of stored button mushrooms were investigated.The button mushrooms were immersed in the NO donor sodium nitroprusside(15μmol/L)for 3 min and then stored under the condition of 4℃,90%relative humidity for 12 days.Results showed that the treated mushrooms have reduced weight loss rate,uniform white colour,and higher firmness during storage.Compared to the control,the ketones,alcohols,esters,and aldehydes in the NO-treated button mushroom increased sharply at 3 days of storage and then showed a continuing decline trend,except ester compounds which reached the peak value at 6 days of storage.In addition,NO treatment increased the total phenolics and catalase activity and inhibited the polyphenol oxidase activity in the stored button mushroom.These results indicated that NO treatment is an alternative storage technology to enhance antioxidant capacity and maintain flavour and consumer acceptance of stored button mushroom. | Peiyu Zhang Haoyue Sun Ting Fang Yaoyao Zhao Yuquan Duan Qiong Lin | 2020 | Food Quality and Safety2020,4,3: | 2 |
| 6 | A Trusted Mobile Payment Environment Based on Trusted Computing and Virtualization Technology显示文摘In this paper,we propose a trusted mobile payment environment(TMPE)based on trusted computing and virtualization technology.There are a normal operating system(OS)and a trusted OS(TOS)in TMPE.We store the image of TOS in a memory card to hinder tampering.The integrity of TOS is protected by means of a trusted platform module(TPM).TOS can only be updated through a trusted third party.In addition,virtualization technology is applied to isolate TOS from normal OS.Users complete ordinary affairs in normal OS and security-sensitive affairs in TOS.TMPE can offer users a highly protected environment for mobile payment.Moreover,TMPE has good compatibility in different hardware architectures of mobile platforms.As the evaluation shows,TMPE satisfies the requirement of mobile payment well. | WANG Juan LIN Wutao LI Haoyu DU Bianxia MENG Ke WANG Jiang | 2014 | Wuhan University Journal of Natural Sciences2014,19,5: | 2 |
| 7 | Principle and numerical demonstration of high power all-fiber coherent beam combination based on self-imaging effect in a square core fiber显示文摘The self-imaging effect in a square core fiber has been investigated, and an integrated all-fiber combiner has been proposed based on a large mode area double clad fiber, which can be employed to construct high power coherent beam combining sources in the all-fiber format. The influence of various parameters on beam quality(M^(2)) and efficiency of the all-fiber coherent beam combiner has been studied numerically, which reveals that the near diffraction-limited laser beam can be achieved. A principle demonstration of the self-imaging effect has been carried out experimentally in a square core fiber, which proves the feasibility of beam combining with the square fiber, and that it is a promising way to develop high power coherent beam combination sources. | Yuefang Yan Yu Liu Haoyu Zhang Yue Li Yuwei Li Xi Feng Donglin Yan Jianjun Wang Honghuan Lin Feng Jing Wenhui Huang Rumao Tao | 2022 | Photonics Research2022,10,2: | 2 |
| 8 | Remediation performance and mechanisms of Cu and Cd contaminated water and soil using Mn/Al-layered double oxide-loaded biochar显示文摘The combined pollution of heavy metals is ubiquitous worldwide.Mn/Al-layered double oxide-loaded crab shells biochar (LDO/BC) was prepared,so as to remediate the combined pollution of Cd and Cu in soil and water.The pristine and used LDO/BC were characterized and the results revealed that the layered double oxide was successfully loaded on crab shells biochar (BC) and metal element Ca in crab shells was beneficial to the formation of more regular layered and flake structure.The maximal adsorption capacity (Qm) of LDO/BC for aqueous Cu^(2+)and Cd^(2+)was 66.23 and 73.47 mg/g,respectively.LDO/BC and BC were used to remediate e-waste-contaminated soil for the first time and exhibited highly efficient performance.The extraction amount of Cu and Cd in the contaminated soil by diethylene triamine penta-acetic acid (DTPA) after treating with 5% LDO/BC was significantly reduced from 819.84 to 205.95 mg/kg (with passivation rate 74.8%) and 8.46 to 4.16 mg/kg(with passivation rate 50.8%),respectively,inferring that the bioavailability of heavy metals declined remarkably.The experimental result also suggested that after remediation by LDO/BC the exchangeable and weak acid soluble Cu and Cd in soil translated to reducible,residual and oxidizable fraction which are more stable state.Precipitation,complexation and ion exchange were proposed as the possible mechanisms for Cd and Cu removal.In general,these experiment results indicate that LDO/BC can be a potentially effective reagent for remediation of heavy metal contaminated water and soil. | Pengcheng Lin Hang Liu Hua Yin Minghan Zhu Haoyu Luo Zhi Dang | 2023 | Journal of Environmental Sciences2023,,3: | 2 |
| 9 | Design of a clustered data-driven array processor for computer vision显示文摘Computer vision(CV)is widely expected to be the next big thing in emerging applications.So many heterogeneous architectures for computer vision emerge.However,plenty of data need to be transferred between different structures for heterogeneous architecture.The long data transfer delay becomes the mainly problem to limit the processing speed for computer vision applications.For reducing data transfer delay and fasting computer vision applications,a clustered data-driven array processor is proposed.A three-level pipelining processing element is designed which supports two-buffer data flow interface and 8 bits,16 bits,32 bits subtext parallel computation.At the same time,for accelerating transcendental function computation,a four-way shared pipelining transcendental function accelerator is designed,which is based on Y-intercept adjusted piecewise linear segment algorithm.A distributed shared memory structure based on unified addressing is also employed.To verify efficiency of architecture,some image processing algorithms are implemented on proposed architecture.Simultaneously the proposed architecture has been implemented on Xilinx ZC 706 development board.The same circuitry has been synthesized using SMIC 130 nm CMOS technology.The circuitry is able to run at 100 MHz.Area is 26.58 mm2. | 山蕊 Deng Junyong Jiang Lin Zhu Yun Wu Haoyue He Feilong | 2020 | High Technology Letters2020,26,4: | 2 |
| 10 | Simultaneous adsorption of As(Ⅲ) and Pb(Ⅱ) by the iron-sulfur codoped biochar composite:Competitive and synergistic effects显示文摘Simultaneous elimination of As(Ⅲ) and Pb(Ⅱ) from wastewater is still a great challenge.In this work,an iron-sulfur codoped biochar (Fe/S-BC) was successfully fabricated in a simplified way and was applied to the remediate the co-pollution of As(Ⅲ) and Pb(Ⅱ).The positive enthalpy indicated that the adsorption in As-Pb co-pollution was an endothermic reaction.The mechanism of As(Ⅲ) removal could be illustrated by surface complexation,oxidation and precipitation.In addition to precipitation and complexation,the elimination mechanism of Pb(Ⅱ) also contained ion exchange and electrostatic interactions.Competitive and synergistic effects existed simultaneously in the co-contamination system.The suppression of As(Ⅲ) was ascribed to competitive complexation of the two metals on Fe/S-BC,while the synergy of Pb(Ⅱ) was attributed to the formation of the PbFe2(AsO_(4))2(OH)2.Batch experiments revealed that Fe/S-BC had outstanding ability to remove As(Ⅲ) and Pb(Ⅱ),regardless of pH dependency and interference by various coexisting ions.The maximum adsorption capacities of the Fe/S-BC for As(Ⅲ) and Pb(Ⅱ) were 91.2 mg/g and 631.7 mg/g,respectively.Fe/S-BC could be treated as a novel candidate for the elimination of As(Ⅲ)-Pb(Ⅱ) combined pollution. | Yijun Chen Qintie Lin Xiaoqing Wen Jin He Haoyu Luo Quanfa Zhong Libin Wu Jiaqi Li | 2023 | Journal of Environmental Sciences2023,,3: | 1 |
| 11 | Parallel design of convolutional neural networks for remote sensing images object recognition based on data-driven array processor显示文摘Object recognition in very high-resolution remote sensing images is a basic problem in the field of aerial and satellite image analysis.With the development of sensor technology and aerospace remote sensing technology,the quality and quantity of remote sensing images are improved.Traditional recognition methods have a certain limitation in describing higher-level features,but object recognition method based on convolutional neural network(CNN)can not only deal with large scale images,but also train features automatically with high efficiency.It is mainly used on object recognition for remote sensing images.In this paper,an AlexNet CNN model is trained using 2100 remote sensing images,and correction rate can reach 97.6%after 2000 iterations.Then based on trained model,a parallel design of CNN for remote sensing images object recognition based on data-driven array processor(DDAP)is proposed.The consuming cycles are counted.Simultaneously,the proposed architecture is realized on Xilinx V6 development board,and synthesized based on SMIC 130 nm complementary metal oxid semiconductor(CMOS)technology.The experimental results show that the proposed architecture has a certain degree of parallelism to achieve the purpose of accelerating calculations. | Shan Rui Jiang Lin Deng Junyong Cui Pengfei Zhang Yuting Wu Haoyue Xie Xiaoyan | 2020 | The Journal of China Universities of Posts and Telecommunications2020,27,6: | 1 |
| 12 | Environmental behavior, human health effect, and pollution control of heavy metal(loid)s toward full life cycle processes显示文摘Heavy metal(loid)s(HMs)have caused serious environmental pollution and health risks.Although the past few years have witnessed the achievements of studies on environmental behavior of HMs,the related toxicity mechanisms,and pollution control,their relationship remains a mystery.Researchers generally focused on one topic independently without comprehensive considerations due to the knowledge gap between environmental science and human health.Indeed,the full life cycle control of HMs is crucial and should be reconsidered with the combination of the occurrence,transport,and fate of HMs in the environment.Therefore,we started by reviewing the environmental behaviors of HMs which are affected by a variety of natural factors as well as their physicochemical properties.Furthermore,the related toxicity mechanisms were discussed according to exposure route,toxicity mechanism,and adverse consequences.In addition,the current state-of-the-art of available technologies for pollution control of HMs wastewater and solid wastes were summarized.Finally,based on the research trend,we proposed that advanced in-operando characterizations will help us better understand the fundamental reaction mechanisms,and big data analysis approaches will aid in establishing the prediction model for risk management. | Haoyu Deng Yuling Tu Han Wang Ziyi Wang Yanyu Li Liyuan Chai Wenchao Zhang Zhang Lin | 2022 | Eco-Environment & Health2022,1,4: | 1 |
| 13 | Adding power of artificial intelligence to situational awareness of large interconnections dominated by inverter‐based resources显示文摘Large‐scale power systems exhibit more complex dynamics due to the increasing inte-gration of inverter‐based resources(IBRs).Therefore,there is an urgent need to enhance the situational awareness capability for better monitoring and control of power grids dominated by IBRs.As a pioneering Wide‐Area Measurement System,FNET/GridEye has developed and implemented various advanced applications based on the collected synchrophasor measurements to enhance the situational awareness capability of large‐scale power grids.This study provides an overview of the latest progress of FNET/GridEye.The sensors,communication,and data servers are upgraded to handle ultra‐high density synchrophasor and point‐on‐wave data to monitor system dynamics with more details.More importantly,several artificial intelligence(AI)‐based advanced appli-cations are introduced,including AI‐based inertia estimation,AI‐based disturbance size and location estimation,AI‐based system stability assessment,and AI‐based data authentication. | Lin Zhu Yinfeng Zhao Yi Cui Shutang You Wenpeng Yu Shengyuan Liu He Yin Chang Chen Yuru Wu Wei Qiu Mirka Mandich Hongyu Li Adedasola Ademola Chengwen Zhang Chujie Zeng Xinlan Jia Weikang Wang Haoyu Yuan Huaiguang Jiang Jin Tan Yilu Liu | 2021 | High Voltage2021,6,6: | 0 |
| 14 | Groundwater Environmental Impact of Jiupansi Tunnel显示文摘In tunnel construction,groundwater is often dried up,and vegetation around the tunnel is exhausted due to excessive water inflow.Based on the requirement of environmental sustainable development,it is of great practical significance to carry out in-depth research on this issue.Taking Jiupansi Tunnel crossing Xichang-Shangri-La Expressway as an example,on the basis of engineering geological investigation,the types of groundwater flow are studied,and the ways of groundwater discharge and recharge are analyzed.Afterwards,the surface runoff,underground catchment and water inflow caused by the construction are calculated.The results show that during the construction period of the tunnel,the maximum water inflow is 6041 m 3/d,and the normal water inflow is 2041 m 3/d;the groundwater level is lowered,and the maximum influence radius of the funnel is 157 m.From the point of view of groundwater and ecological environment impact,it is reasonable and feasible to construct tunnels under the condition of strengthening advance prediction,which will not cause larger groundwater environmental problems and have less impact on nearby residents and upper ecology. | Zilong WANG Haoyu WU Huazhang LIN Hao LIU | 2020 | Meteorological and Environmental Research2020,11,5: | 0 |
| 15 | Identification of two pIgR-like molecules in teleost fish with opposite roles in mucosal immunity against bacterial infection显示文摘Polymeric immunoglobulin(Ig)receptor-like(pIgRL)molecules have been identified in teleost fish.However,compared to functional studies of their related genes(e.g.,mammalian CD300 family)in eliminating pathogen invasion while preserving homeostasis,the roles of pIgRL in teleost fish remain unclear.In this study,we demonstrated that a pair of pIgRL molecules in zebrafish,pIgRL3.5 and pIgRL4.2,were highly expressed in the intestine and immune cells.Moreover,we constructed an Edwardsiella piscicida infection model,which induced strong inflammatory responses in the zebrafish intestine.Interestingly,pIgRL3.5 and pIgRL4.2 exhibited opposite inducible expression patterns in response to bacterial infection,suggesting that they perform different roles.More importantly,by conducting overexpression and knockdown experiments,our findings demonstrated that zebrafish pIgRL3.5 played a protective role in host defense against E.piscicida infection by inhibiting excessive inflammatory responses.In contrast,pIgRL4.2 facilitated pathogen growth and dissemination in zebrafish intestine.Collectively,our findings are the first to demonstrate that a pair of pIgRL molecules in teleost fish play opposite roles in mucosal immune response to bacterial infection.Therefore,our results provide crucial insights into the conserved role of pIgRL molecules in immune regulatory functions throughout vertebrate evolution. | Haoyue Xu Zixuan Wang Zhenyu Huang Xiaoyun Chen Ruiqi Lin Yongyao Yu Zhen Xu | 2023 | Water Biology and Security2023,2,4: | 0 |
| 16 | Kinetic Study of Homogeneous Rhodium-Catalyzed Ethanol Carbonylation Using Bis(diphenylphosphino)methane Ligands显示文摘Homogeneous rhodium-catalyzed carbonylation of ethanol is a potential route for the preparation of propionic acid,although its commercialization has been hindered by a low reaction rate.In this work,various bis(diphenylphosphine)ligands were evaluated in the rhodium-catalyzed reaction system in an effort to improve the reaction rate.By comparing the space-time yield and selectivity of the catalytic system in a Hastelloy autoclave reactor,the effects of the choice of ligand,ligand:rhodium ratio,carbon monoxide pressure,temperature,rhodium concentration,ethyl iodide content,and lithium iodide content were investigated.In the presence of the ligand bis(diphenylphosphino)methane disulfide(dppmS_(2)),the activity of the catalyst was improved significantly.The results revealed that the optimal conditions included a dppmS_(2):Rh molar ratio of 0.5:1,a rhodium concentration of 1000μg/g,an ethyl iodide content of 10%,and a lithium iodide content of 10%.The most suitable reaction temperature and carbon monoxide pressure were 463 K and 3.0 MPa,respectively,which resulted in a maximum space-time yield of 4.30 mol/(h·L).A kinetic model was established in the temperature range of 442-463 K,and the model data were regressed and validated,revealing an activation energy of 28.01 kJ/mol.Residual analysis and statistical tests demonstrated the reliability of the kinetic experiments. | Long Haoyu Xu Lin Song Jianhua Wang Xiaoping Wang Weichong Liu Dianhua | 2022 | China Petroleum Processing & Petrochemical Technology2022,24,2: | 0 |
| 17 | Antimicrobial resistance characteristics and phylogenetic relationships of pleuromutilin-resistant Enterococcus isolates from different environmental samples along a laying hen production chain显示文摘Antimicrobial resistance in the laying hen production industry has become a serious public health problem.The antimicrobial resistance and phylogenetic relationships of the common conditional pathogen Enterococcus along the laying hen production chain have not been systematically clarified.105 Enterococcus isolates were obtained from 115 environmental samples (air,dust,feces,fies,sewage,and soil) collected along the laying hen production chain (breeding chicken,chick,young chicken,and commercial laying hen).These Enterococcus isolates exhibited resistance to some clinically relevant antibiotics,such as tetracycline (92.4%),streptomycin (92.4%),and erythromycin (91.4%),and all strains had multidrug resistance phenotypes.Whole genome sequencing characterized 29 acquired antibiotic resistance genes (ARGs) that conferred resistance to 11 classes of antibiotics in 51pleuromutilin-resistant Enterococcus isolates,and lsa(E),which mediates resistance to pleuromutilins,always co-occurred with lnu(B).Alignments with the Mobile Genetic Elements database identified four transposons (Tn554,Tn558,Tn6261,and Tn6674) with several ARGs(erm(A),ant(9)-la,fex(A),and optrA) that mediated resistance to many clinically important antibiotics.Moreover,we identified two new transposons that carried ARGs in the Tn554 family designated as Tn7508 and Tn7492.A complementary approach based on conventional multi-locus sequence typing and whole genome single nucleotide polymorphism analysis showed that phylogenetically related pleuromutilin-resistant Enterococcus isolates were widely distributed in various environments on different production farms.Our results indicate that environmental contamination by antimicrobial-resistant Enterococcus requires greater attention,and they highlight the risk of pleuromutilin-resistant Enterococcus and ARGs disseminating along the laying hen production chain,thereby warranting effective disinfection. | Cong Lin Yuxuan Feng Xianjun Xie Haoyu Zhang Jie Wu Yixiao Zhu Jing Yu Jingyi Feng Wen Su Shanming Lai Anyun Zhang | 2024 | Journal of Environmental Sciences2024,,3: | 0 |
| 18 | Seismic Damage to Owner-Built RC Frames in Charikot during the 2015 Nepal Earthquake Sequence显示文摘The damage to the masonry-infilled reinforced concrete( RC) frame buildings in Charikot,the capital city of Dolakha district in Nepal,during the 2015 April-to-May Nepal earthquake sequence is reported. Most of these buildings were built by the owners with little governmental inspections regarding their structural design or constructional quality. Although they generally performed better than other structural systems such as stone-masonry houses,the RC frames sustained extensive damage ranging from cracking of infill to complete collapse. In particular,eight of the 72 inspected RC frames alongside an uphill street collapsed in different ways. In addition to the un-engineered nature of these RC frames,their collapse could also be attributed to multiple technical reasons including the effect of terrain, the pounding between adjacent buildings and the accumulative damage in the earthquake sequence. | Qu Zhe Wang Tao Lin Xuchuan Zhang Haoyu Yang Yongqiang | 2018 | Earthquake Research in China2018,32,4: | 0 |
| 19 | Regenerative cerium oxide nanozymes alleviate oxidative stress for efficient dry eye disease treatment显示文摘Dry eye disease(DED)is the most common eye disease in ophthalmic consultation except for refractive errors.Therefore,an exploration of valid and alternative therapeutic interventions is essential to feed the urgent medical need.It has been demonstrated that oxidative stress causes multiple adverse effects in the pathogenesis of DED,thence alleviating oxidative stress is an effective therapeutic strategy for the DED treatment.Herein,we developed a cerium oxide nanozyme combined with branched poly(ethylene imine)-graftpoly(ethylene glycol)(bPEI-g-PEG).Owing to its stable hydrophilic chains on the surface reducing the cytotoxicity and loads of amines groups that be combined with cerium ions through coordination bonds,the modified nanozymes(referred to as CNP@bPEI-g-PEG)are water soluble and highly biocompatible.Meanwhile,due to its excellent antioxidant activity,CNP@bPEI-g-PEG nanozymes can mimic the activity of superoxide dismutase and catalase to scavenge intracellular reactive oxygen species(ROS).Experimental studies firmly demonstrated that the modified nanozymes were auto-regenerative and more active in scavenging excessive ROS and alleviating oxidative stress by cerium-element valence state recycling,recovering the morphology of corneal,conjunctival epithelium and the number of goblet cells.The advanced combination may offer a superior therapeutic strategy to deal with oxidative stress for effective treatment of DED. | Haoyu Zou Haiting Wang Baoqi Xu Lin Liang Liangliang Shen Quankui Lin | 2022 | Regenerative Biomaterials2022,9,1: | 0 |
| 20 | Photooligomerization Determines Photosensitivity and Photoreactivity of Plant Cryptochromes显示文摘Plant and non-plant species possess cryptochrome(CRY)photoreceptors to mediate blue light regulation of development or the circadian clock.The blue light-dependent homooligomerization of Arabidopsis CRY2 is a known early photoreaction necessary for its functions,but the photobiochemistry and function of light-dependent homooligomerization and heterooligomerization of cryptochromes,collectively referred to as CRY photooligomerization,have not been well established.Here,we show that photooligomerization is an evolutionarily conserved photoreaction characteristic of CRY photoreceptors in plants and some non-plant species.Our analyses of the kinetics of the forward and reverse reactions of photooligomerization of Arabidopsis CRY1 and CRY2 provide a previously unrecognized mechanism underlying the different photosensitivity and photoreactivity of these two closely related photoreceptors.We found that photooligomerization is necessary but not sufficient for the functions of CRY2,implying that CRY photooligomerization is presumably accompanied by additional function-empowering conformational changes.We further demonstrated that the CRY2-CRY1 heterooligomerization plays roles in regulating functions of Arabidopsis CRYs in vivo.Taken together,these results suggest that photooligomerization is an evolutionarily conserved mechanism determining the photosensitivity and photoreactivity of plant CRYs. | Qing Liu Tiantian Su Wenjin He Huibo Ren Siyuan Liu Yadi Chen Lin Gao Xiaohua Hu Haoyue Lu Shijiang Cao Ying Huang Xu Wang Qin Wang Chentao Lin | 2020 | Molecular Plant2020,13,3: | 0 |