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101篇 您的检索式:作者名="Dandan LU"
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1Clinical and biochemical indexes from 2019-nCoV infected patients linked to viral loads and lung injury显示文摘The outbreak of the 2019-nCoV infection began in December 2019 in Wuhan,Hubei province,and rapidly spread to many provinces in China as well as other countries.Here we report the epidemiological,clinical,laboratory,and radiological characteristics,as well as potential biomarkers for predicting disease severity in 2019-nCoV-infected patients in Shenzhen,China.All 12 cases of the 2019-nCoV-infected patients developed pneumonia and half of them developed acute respiratory distress syndrome (ARDS).The most common laboratory abnormalities were hypoalbuminemia,lymphopenia,decreased percentage of lymphocytes (LYM) and neutrophils (NEU),elevated C-reactive protein (CRP) and lactate dehydrogenase (LDH),and decreased CD8 count.The viral load of 2019-nCoV detected from patient respiratory tracts was positively linked to lung disease severity.ALB,LYM,LYM (%),LDH,NEU (%),and CRP were highly correlated to the acute lung injury.Age,viral load,lung injury score,and blood biochemistry indexes,albumin (ALB),CRP,LDH,LYM (%),LYM,and NEU (%),may be predictors of disease severity.Moreover,the Angiotensin Ⅱlevel in the plasma sample from 2019-nCoV infected patients was markedly elevated and linearly associated to viral load and lung injury.Our results suggest a number of potential diagnosis biomarkers and angiotensin receptor blocker (ARB) drugs for potential repurposing treatment of 2019-nCoV infection.Yingxia Liu Yang Yang Cong Zhang Fengming Huang Fuxiang Wang Jing Yuan Zhaoqin Wang Jinxiu Li Jianming Li Cheng Feng Zheng Zhang Lifei Wang Ling Peng Li Chen Yuhao Qin Dandan Zhao Shuguang Tan Lu Yin Jun Xu Congzhao Zhou Chengyu Jiang Lei Liu 2020Science China(Life Sciences)2020,63,3:157
2China's wetland change (1990-2000) determined by remote sensing显示文摘Two wetland maps for the entire China have been produced based on Landsat data acquired around 1990 and 2000. Wetlands in China have been divided into 3 broad categories with 15 sub-categories except rice fields. In 1990, the total wetland area in China was 355208 km2 whereas in 2000 it dropped to 304849 km2 with a net loss of 50360 km2. During an approximate 10-year period, inland wetland reduced from 318326 to 257922 km2, coastal wetland dropped from 14335 to 12015 km2, while artificial wetland increased from 22546 to 34911 km2. The greatest natural wetland loss occurred in Heilongjiang, Inner Mon- golia, and Jilin with a total loss of over 57000 km2 of wetland. In western China, over 13000 km2 of wetlands were newly formed in Xinjiang, Tibet, and Qinghai. About 12000 km2 of artificial wetlands were also added for fish farm and reservoir constructions. The newly formed wetlands in western China were caused primarily by climate warming over that region whereas the newly created artificial wetlands were caused by economic developments. China’s wetland loss is caused mainly by human activities.Peng Gong ZhenGuo Niu Xiao Cheng KuiYi Zhao DeMin Zhou JianHong Guo Lu Liang XiaoFeng Wang DanDan Li HuaBing Huang et al. 2010Science China Earth Sciences2010,53,7:28
3Additive manufacturing of metals:Microstructure evolution and multistage control显示文摘As a revolutionary industrial technology,additive manufacturing creates objects by adding materials layer by layer and hence can fabricate customized components with an unprecedented degree of freedom.For metallic materials,unique hierarchical microstructures are constructed during additive manufacturing,which endow them with numerous excellent properties.To take full advantage of additive manufacturing,an in-depth understanding of the microstructure evolution mechanism is required.To this end,this review explores the fundamental procedures of additive manufacturing,that is,the formation and binding of melt pools.A comprehensive processing map is proposed that integrates melt pool energy-and geometry-related process parameters together.Based on it,additively manufactured microstructures are developed during and after the solidification of constituent melt pool.The solidification structures are composed of primary columnar grains and fine secondary phases that form along the grain boundaries.The post-solidification structures include submicron scale dislocation cells stemming from internal residual stress and nanoscale precipitates induced by intrinsic heat treatment during cyclic heating of adjacent melt pool.Based on solidification and dislocation theories,the formation mechanisms of the multistage microstructures are thoroughly analyzed,and accordingly,multistage control methods are proposed.In addition,the underlying atomic scale structural features are briefly discussed.Furthermore,microstructure design for additive manufacturing through adjustment of process parameters and alloy composition is addressed to fulfill the great potential of the technique.This review not only builds a solid microstructural framework for metallic materials produced by additive manufacturing but also provides a promising guideline to adjust their mechanical properties.Zhiyuan Liu Dandan Zhao Pei Wang Ming Yan Can Yang Zhangwei Chen Jian Lu Zhaoping Lu 2022Journal of Materials Science & Technology2022,,5:27
4Understanding unusually high levels of peroxyacetyl nitrate(PAN) in winter in Urban Jinan,China显示文摘Peroxyacetyl nitrate(PAN), as a major secondary pollutant, has gained increasing worldwide attentions, but relevant studies in China are still quite limited. During winter of 2015 to summer of 2016, the ambient levels of PAN were measured continuously by an automatic gas chromatograph equipped with an electron capture detector(GC–ECD) analyzer at an urban site in Jinan(China), with related parameters including concentrations of O3, NO, NO_2, PM_(2.5), HONO,the photolysis rate constant of NO_2 and meteorological factors observed concurrently. The mean and maximum values of PAN concentration were(1.89 ± 1.42) and 9.61 ppbv respectively in winter, and(2.54 ± 1.44) and 13.47 ppbv respectively in summer. Unusually high levels of PAN were observed during severe haze episodes in winter, and the formation mechanisms of them were emphatically discussed. Study showed that high levels of PAN in winter were mainly caused by local accumulation and strong photochemical reactions during haze episodes, while mass transport played only a minor role. Accelerated photochemical reactions(compared to winter days without haze) during haze episodes were deduced by the higher concentrations but shorter lifetimes of PAN, which was further supported by the sufficient solar radiation in the photolysis band along with the high concentrations of precursors(NO_2, VOCs) and HONO during haze episodes. In addition, significant PAN accumulation during calm weather of haze episodes was verified by meteorological data.Lu Liu Xinfeng Wang Jianmin Chen Likun Xue Wenxing Wang Liang Wen Dandan Li Tianshu Chen 2018Journal of Environmental Sciences2018,30,9:10
5Mechanistic studies of the transport of peimine in the Caco-2 cell model显示文摘Fritillaria thunbergii Miq. has been widely used in traditional Chinese medicine for its expectorant, antitussive, antiinflammatory and analgesic properties. Moreover, modern pharmacological studies have demonstrated that F. thunbergii Miq. has efficacy in the treatment of leukemia and cancers of the liver and cervix. Although the alkaloid, peimine, is largely responsible for these pharmacological effects, it has very low oral bioavailability. The aim of this study was to investigate the intestinal absorption of peimine in Caco-2 cell monolayers. Having demonstrated that peimine is non-toxic to Caco-2 cells at concentrations o200 μmol/L, the effect of peimine concentration, p H, temperature, efflux transport protein inhibitors and EDTA-Na_2 on peimine transport were studied. The results show that peimine transport is concentration-dependent; that at p H 6.0 and 7.4, the P_(app(AP-BL))of peimine is not significantly different but the Papp(BL-AP)) is; that both Papp(AP-BL)and P_(app(BL-AP))at 4 1C are significantly higher than their corresponding values at 37 1C; that the P-glycoprotein(P-gp) inhibitors, verapamil and cyclosporin A, increase absorption of peimine; and that EDTA-Na2 has no discernible effect. In summary,the results demonstrate that the intestinal absorption of peimine across Caco-2 cell monolayers involves active transport and that peimine is a substrate of P-gp.Lihua Chen Xueping Lu Xinli Liang Dandan Hong Zhiyu Guan Yongmei Guan Weifeng Zhu 2016Acta Pharmaceutica Sinica B2016,6,2:8
6Resveratrol induces AMPK and mTOR signaling inhibition-mediated autophagy and apoptosis in multiple myeloma cells显示文摘Resveratrol,a natural compound extracted from the skins of grapes,berries,or other fruits,has been shown to have anti-tumor effects against multiple myeloma(MM)via promoting apoptosis and inhibiting cell viability.In addition to apoptosis,autophagy also plays a significant role in anti-tumor effects.However,whether autophagy is involved in anti-MM activity of resveratrol remains unclear.In this study,human MM cell lines U266,RPMI-8226,and NCI-H929 were treated with resveratrol.Cell Counting Kit-8 assay and colony formation assay were used to measure cell viability.Western blot analysis was used to detect apoptosis-and autophagy-associated proteins.3-Methyladenine(3-MA)was applied to inhibit autophagy.Results showed that resveratrol inhibited cell viability and colony formation via promoting apoptosis and autophagy in MM cell lines U266,RPMI-8226,and NCI-H929.Resveratrol promoted apoptosis-related proteins,Caspase-3 activating poly-ADP-ribose polymerase and Caspase-3 cleavage,and decreased the protein level of Survivin in a dose-dependent manner.Additionally,resveratrol upregulated the levels of LC3 and Beclin1 in a dose-dependent way,indicating that autophagy might be implicated in anti-MM effect of resveratrol.Furthermore,3-MA relieved the cytotoxicity of resveratrol by blocking the autophagic flux.Resveratrol increased the phosphorylation of adenosine monophosphate(AMP)-activated protein kinase and decreased the phosphorylation of mammalian target of rapamycin(mTOR)and its downstream substrates p70S6K and 4EBP1 in a dose-dependent manner,leading to autophagy.Therefore,our results suggest that resveratrol exerts anti-MM effects through apoptosis and autophagy,which can be used as a new therapeutic strategy for MM in clinic.Ruye Ma Dandan Yu Yu Peng Hongfei Yi Yingcong Wang Taofang Cheng Bingqing Shi Guang Yang Weiming Lai Xiaosong Wu Ye Lu Jumei Shi 2021Acta Biochimica et Biophysica Sinica2021,53,6:7
7Acetyl salicylic acid attenuates cardiac hypertrophy through Wnt signaling显示文摘室的肥大是心血管的疾病的事件的一个强大、独立的预言者。低剂量的乙酰水杨酸酸(阿司匹林) 的脉管的性质通过血小板 cyclooxygenase 的不可逆的抑制提供心血管的好处 1;然而,可能的 anti-hypertrophic 性质和阿司匹林的潜在的机制没详细被调查。在这研究,健康野类型的雄的老鼠随机被划分成三个组并且使遭到了到横向的大动脉的收缩(TAC ) 或假冒的操作。操作 TAC 的老鼠与低剂量的阿司匹林的人的等价物被对待(10 mg 吗?Samuel Chege Gitau Xuelian Li Dandan Zhao Zhenfeng Guo Haihai Liang Ming Qian Lifang Lv Tianshi Li Bozhi Xu Zhiguo Wang Yong Zhang Chaoqian Xu Yanjie Lu Zhiming Du Hongli Shan Baofeng Yang 2015Frontiers of Medicine2015,9,4:6
8Molecular dissection of plant height QTLs using recombinant inbred lines from hybrids between common wheat (Triticum aestivum L.) and spelt wheat (Triticum spelta L.)显示文摘In wheat, plant height is an important agronomic trait, and a number of quantitative trait loci (QTLs) controlling plant height have been located. In this study, using the conditional and unconditional QTL mapping methods, combined with data from five different growth stages over two years of field trials, the developmental behavior for plant height in wheat was dissected. Nine unconditional QTLs and 8 conditional QTLs were identified, of which 6 were detected by both methods. None of the 11 QTLs was detected at all of the 5 investigated developmental stages, but 7 QTLs were detected at certain stages in both years. Further analysis identified 9 unconditional QTLs at different stages, which could explain the phenotypic variation from 4.81% to 17.35%. It was noteworthy that one major QTL designated QHt-4B-2, which was located on chromosome 4B, was detected on May 18 and 25 in both years, and its genetic contributions to plant height ranged from 13.42% to 16.13%. Moreover, of the 8 conditional QTLs identified, six were detected in both years, in the order of QHt-3B→QHt-4B-1→QHt-4B-2→QHt-4D→QHt-5A and QHt-2B expressed at the same developmental stage. The results indicate that QTL expression during plant height development is selective and in a temporal order.LIU Gang XU ShengBao NI ZhongFu XIE ChaoJie QIN DanDan LI Jing LU LaHu ZHANG JinPing PENG HuiRu SUN QiXin 2011Chinese Science Bulletin2011,56,18:6
9Dihydrocelastrol inhibits multiple myeloma cell proliferation and promotes apoptosis through ERK1/2 and IL-6/STAT3 pathways in vitro and in vivo显示文摘多重骨髓瘤(公里) 是第二很经常的恶意的 hematological 疾病。Dihydrocelastrol (DHCE ) 被 hydrogenated celastrol 综合,从中国药用的植物 Tripterygium regelii 孤立的 treterpene。在这研究,我们首先在公里房间上报导了 DHCE 的反肿瘤活动。我们发现 DHCE 能禁止房间增长并且在 vitro 通过 caspase 依赖的方法支持 apoptosis。另外, DHCE 能使 interleukin (IL ) 的表达式失去活性 -6 和 downregulate 细胞外的调整蛋白质 kinases (ERK1/2 ) 和信号变换器和在公里的抄写 3 的使活跃之物(STAT3 ) 的 phosphorylation。它也面对 IL-6 对公里房间线保留了它的活动。而且,有 DHCE 的公里房间的处理在房间周期的 G 0/G1 阶段导致了房间的累积。尤其是, DHCE 减少了 4 和 6 在公里房间衬里的 cyclin D1 和 cyclin 依赖的 kinases 的表示。另外,它向 MM 房间线的功效能与 histone deacetylase 禁止者 panobinostat (LBH589 ) 在联合被提高,它在公里作为潜在的治疗学的策略暗示了 DHCE 和 LBH589 的联合处理的可能性。另外,有 DHCE 的 NCI-H929 忍受肿瘤的裸体老鼠的处理(10 mg/kg/d, i.p, 1-14 天) 在 vivo 导致了肿瘤生长的 73% 抑制。一起拿,我们的现在的学习的结果显示 DHCE 能禁止细胞的增长并且在骨髓瘤房间导致房间 apoptosis 通过不同机制调停了,可能通过禁止 IL-6/STAT3 和 ERK1/2 小径。并且它可以为公里病人提供一种新治疗学的选择。Liangning Hu Huiqun Wu Bo Li Dongliang Song Guang Yang Gege Chen Bingqian Xie Zhijian Xu Yong Zhang Dandan Yu Jun Hou Wenqin Xiao Xi Sun Gaomei Chang Yiwen Zhang Lu Gao Bojie Dai Yi Tao Jumei Shi Weiliang Zhu 2017Acta Biochimica et Biophysica Sinica2017,49,5:5
10Rational development of a human antibody cocktail that deploys multiple functions to confer Pan-SARS-CoVs protection显示文摘Structural principles underlying the composition and synergistic mechanisms of protective monoclonal antibody cocktails are poorly defined.Here,we exploited antibody cooperativity to develop a therapeutic antibody cocktail against SARS-CoV-2.On the basis of our previously identified humanized cross-neutralizing antibody H014,we systematically an a lyzed a fully human n aive antibody library and rationally identified a potent neutralizing antibody partner,P17,which confers effective protection in animal model.Cryo-EM studies dissected the nature of the P17 epitope,which is SARS-CoV-2 specific and distinctly different from that of HOI4.High-resolution structure of the SARS-CoV-2 spike in complex with HOM and P17,together with functional investigations revealed that in a two-antibody cocktail,synergistic neutralization was achieved by S1 shielding and conformational locking,thereby blocking receptor attachment and viral membrane fusion,conferring high potency as well as robustness against viral mutation escape.Furthermore,cluster analysis identified a hypothetical 3rd antibody partner for further reinforcing the cocktail as pan-SARS-CoVs therapeutics.Hangping Yao Yao Sun Yong-Qiang Deng Nan Wang Yongcong Tan Na-Na Zhang Xiao-Feng Li Chao Kong Yan-Peng Xuc Qi Chen Tian-Shu Cao Hui Zhao Xintian Yan Lei Cao Zhe Lv Dandan Zhu Rui Feng Nanping Wu Wenhai Zhang Yuhao Hu Keda Chen Rong-Rong Zhang Qingyu Lv Shihui Sun Yunhua Zhou Run Yan Guan Yang Xinglu Chanjuan Liu Xiangyun Lu Linfang Cheng Hongying Qiu Xing-Yao Huang Tianhao Weng Danrong Shi Weidong Jiang Junbin Shao Lei Wang Jie Zhang Tao Jiang Guojun Lang Cheng-Feng Qinc Lanjuan Li Xiangxi Wang 2021Cell Research2021,31,1:5
11LRP6 downregulation promotes cardiomyocyte proliferation and heart regeneration显示文摘The adult mammalian heart is thought to be a terminally differentiated organ given the postmitotic nature of cardiomyocytes.Consequently,the potential for cardiac repair through cardiomyocyte proliferation is extremely limited.Low-density lipoprotein receptor-related protein 6(LRP6)is a Wnt co-receptor that is required for embryonic heart development.In this study we investigated the role of LRP6 in heart repair through regulation of cardiomyocyte proliferation.Lrp6 deficiency increased cardiomyocyte cell cycle activity in neonatal,juvenile and adult mice.Cardiomyocyte-specific deletion of Lrp6 in the mouse heart induced a robust regenerative response after myocardial infarction(MI),led to reduced MI area and improvement in left ventricular systolic function.In vivo genetic lineage tracing revealed that the newly formed cardiomyocytes in Lrp6-deficient mouse hearts after MI were mainly derived from resident cardiomyocytes.Furthermore,we found that the pro-proliferative effect of Lrp6 deficiency was mediated by the ING5/P21 signaling pathway.Gene therapy using the adeno-associated virus(AAV)9 miRNAi-Lrp6 construct promoted the repair of heart injury in mice.Lrp6 deficiency also induced the proliferation of human induced pluripotent stem cell-derived cardiomyocytes(iPSC-CMs).Our study identifies LRP6 as a critical regulator of cardiomyocyte proliferation,which may lead to the development of a novel molecular strategy to promote myocardial regeneration and repair.Yahan Wu Liping Zhou Hongyu Liu Ran Duan Huixing Zhou Fulei Zhang Xiaoyu He Dongbo Lu Ke Xiong Maolin Xiong Jinzhu Zhuang Yi Liu Li Li Dandan Liang Yi-Han Chen 2021Cell Research2021,31,4:5
12Identification of an endogenous glutamatergic transmitter system controlling excitability and conductivity of atrial cardiomyocytes显示文摘As an excitatory transmitter system,the glutamatergic transmitter system controls excitability and conductivity of neurons.Since both cardiomyocytes and neurons are excitable cells,we hypothesized that cardiomyocytes may also be regulated by a similar system.Duanyang Xie Ke Xiong Xuling Su Guanghua Wang Qiang Ji Qicheng Zou Lingling Wang Yi Liu Dandan Liang Jinfeng Xue Luxin Wang Xueting Gao Xingdong Gu Hongyu Liu r Xiaoyu He Li Li Jian Yang Youming Lu Luying Peng Yi-Han Chen 2021Cell Research2021,31,9:5
13Neurological complications and infection mechanism of SARS-CoV-2显示文摘Currently,SARS-CoV-2 has caused a global pandemic and threatened many lives.Although SARS-CoV-2 mainly causes respiratory diseases,growing data indicate that SARS-CoV-2 can also invade the central nervous system(CNS)and peripheral nervous system(PNS)causing multiple neurological diseases,such as encephalitis,encephalopathy,Guillain-Barrésyndrome,meningitis,and skeletal muscular symptoms.Despite the increasing incidences of clinical neurological complications of SARS-CoV-2,the precise neuroinvasion mechanisms of SARS-CoV-2 have not been fully established.In this review,we primarily describe the clinical neurological complications associated with SARS-CoV-2 and discuss the potential mechanisms through which SARS-CoV-2 invades the brain based on the current evidence.Finally,we summarize the experimental models were used to study SARS-CoV-2 neuroinvasion.These data form the basis for studies on the significance of SARS-CoV-2 infection in the brain.Dandan Wan Tingfu Du Weiqi Hong Li Chen Haiying Que Shuaiyao Lu Xiaozhong Peng 2021Signal Transduction and Targeted Therapy2021,6,12:4
14Targeting the PI3K/Akt/mTOR signaling pathway by pterostilbene attenuates mantle cell lymphoma progression显示文摘Dandan Yu Yong Zhang Gege Chen Yongsheng Xie Zhijian Xu Shuaikang Chang Liangning Hu Bo Li Wenxuan Bu Yingcong Wang Wenqin Xiao Xi Sun Gaomei Chang Lu Gao Sujing Qiang Xiaosong Wu Weiliang Zhu Jumei Shi 2018Acta Biochimica et Biophysica Sinica2018,50,8:4
15Lead halide perovskite nanowires stabilized by block copolymers for Langmuir-Blodgett assembly显示文摘The rapid development of solar cells based on lead halide perovskites(LHPs)has prompted very active research activities in other closely-related fields.Colloidal nanostructures of such materials display superior optoelectronic properties.Especially,onedimensional(1D)LHPs nanowires show anisotropic optical properties when they are highly oriented.However,the ionic nature makes them very sensitive to external environment,limiting their large scale practical applications.Here,we introduce an amphiphilic block copolymer,polystyrene-block-poly(4-vinylpyridine)(PS-P4VP),to chemically modify the surface of colloidal CsPbBr3 nanowires.The resulting core-shell nanowires show enhanced photoluminescent emission and good colloidal stability against water.Taking advantage of the stability enhancement,we further applied a modified Langmuir-Blodgett technique to assemble monolayers of highly aligned nanowires,and studied their anisotropic optical properties.Hao Liu Martin Siron Mengyu Gao Dylan Lu Yehonadav Bekenstein Dandan Zhang Letian Dou A.Paul Alivisatos Peidong Yang 2020Nano Research2020,13,5:4
16In-Situ Differentiation of Acidic and Non-Acidic Tundra via Portable X-ray Fluorescence (PXRF) Spectrometry显示文摘Frozen soils or those with permafrost cover large areas of the earth's surface and support unique vegetative ecosystems. Plants growing in such harsh conditions have adapted to small niches, which allow them to survive. In northern Alaska, USA, both moist acidic and non-acidic tundra occur, yet determination of frozen soil p Hs currently requires thawing of the soil so that electrometric pH methods can be utilized. Contrariwise, a portable X-ray fluorescence(PXRF) spectrometer was used in this study to assess elemental abundances and relate those characteristics to soil pH through predictive multiple linear regressions. Two operational modes, Soil Mode and Geochem Mode, were utilized to scan frozen soils in-situ and under laboratory conditions, respectively, after soil samples were dried and ground. Results showed that lab scanning produced optimal results with adjusted coefficient of determination(R^2) of 0.88 and 0.33 and root mean squared errors(RMSEs) of 0.87 and 0.34 between elemental data and lab-determined pH for Soil Mode and Geochem Mode, respectively. Even though the presence of ice attenuated fluoresced radiation under field conditions, adjusted R^2 and RMSEs between the datasets still provided reasonable model generalization(e.g., 0.73 and 0.49 for field Geochem Mode). Principal component analysis qualitatively separated multiple sampling sites based on elemental data provided by PXRF, reflecting differences in the chemical composition of the soils studied. Summarily, PXRF can be used for in-situ determination of soil pH in arctic environments without the need for sample modification and thawing. Furthermore, use of PXRF for determination of soil pH may provide higher sample throughput than traditional eletrometric-based methods, while generating elemental data useful for the prediction of multiple soil parameters.Somsubhra CHAKRABORTY David C. WEINDORF GARY J. MICHAELSON Chien Lu PING Ashok CHOUDHURY Tarek KANDAKJI Autumn ACREE Akriti SHARMA WANG Dandan 2016Pedosphere2016,26,4:4
17Retina-Inspired Organic Heterojunction-Based Optoelectronic Synapses for Artificial Visual Systems显示文摘For the realization of retina-inspired neuromorphic visual systems which simulate basic functions of human visual systems,optoelectronic synapses capable of combining perceiving,processing,and memorizing in a single device have attracted immense interests.Here,optoelectronic synaptic transistors based on tris(2-phenylpyridine)iridium(Ir(ppy)_(3))and poly(3,3-didodecylquarterthiophene)(PQT-12)heterojunction structure are presented.The organic heterojunction serves as a basis for distinctive synaptic characteristics under different wavelengths of light.Furthermore,synaptic transistor arrays are fabricated to demonstrate their optical perception efficiency and color recognition capability under multiple illuminating conditions.The wavelength-tunability of synaptic behaviors further enables the mimicry of mood-modulated visual learning and memorizing processes of humans.More significantly,the computational dynamics of neurons of synaptic outputs including associated learning and optical logic functions can be successfully demonstrated on the presented devices.This work may locate the stage for future studies on optoelectronic synaptic devices toward the implementation of artificial visual systems.Junyao Zhang Yang Lu Shilei Dai Ruizhi Wang Dandan Hao Shiqi Zhang Lize Xiong Jia Huang 2021Research2021,,1:3
18The State-of-the-Art Review on Applications of Intrusive Sensing,Image Processing Techniques,and Machine Learning Methods in Pavement Monitoring and Analysis显示文摘In modern transportation,pavement is one of the most important civil infrastructures for the movement of vehicles and pedestrians.Pavement service quality and service life are of great importance for civil engineers as they directly affect the regular service for the users.Therefore,monitoring the health status of pavement before irreversible damage occurs is essential for timely maintenance,which in turn ensures public transportation safety.Many pavement damages can be detected and analyzed by monitoring the structure dynamic responses and evaluating road surface conditions.Advanced technologies can be employed for the collection and analysis of such data,including various intrusive sensing techniques,image processing techniques,and machine learning methods.This review summarizes the state-ofthe-art of these three technologies in pavement engineering in recent years and suggests possible developments for future pavement monitoring and analysis based on these approaches.Yue Hou Qiuhan Li Chen Zhang Guoyang Lu Zhoujing Ye Yihan Chen Linbing Wang Dandan Cao 2021Engineering2021,7,6:3
19A Surfactant-stable Bacillus pumilus K9 α-Keratinase and Its Potential Application in Detergent Industry显示文摘GONG Jinsong WANG Yue ZHANG Dandan LI Heng ZHANG Xiaomei ZHANG Rongxian LU Zhenming XU Zhenghong SHI Jinsong 2015Chemical Research in Chinese Universities2015,31,1:3
20ABM-based emergency evacuation modelling during urban pluvial floods:A“7.20”pluvial flood event study in Zhengzhou,Henan Province显示文摘Increasing urban pluvial flood disasters due to climate change and rapid urbanisation have been a great challenge worldwide.Timely and effective emergency evacuation is important for reducing casualties and losses.This has become a bottleneck for emergency management.This study aimed to develop a commonly used Agent-Based Mode(ABM)for pluvial flood emergency evacuation at the city scale,exploring the cascading impacts of pluvial flooding on human behaviour and emergency evacuation.The July 2021 pluvial flood event in Zhengzhou,Henan Province,claiming 380 lives and 40.9 billion yuan in direct losses,was selected as this case study.A raster-based hydraulic model(ECNU Flood-Urban)was used to predict flood inundation(extent and depth)during an event in Zhengzhou’s centre.Moreover,a comparative analysis of emergency evacuations was conducted before and after the pluvial flood event.The results showed that crowd behaviour plays an important role in an emergency evacuation,and extensive flooding leads to an 11-83%reduction in the number of evacuees.This study highlights the importance of risk education and contingency plans in emergency response.The ABM model developed in this study is proven to be effective and practical and will provide support for decision-making in urban flood emergency management.Yuhan YANG Jie YIN Dandan WANG Yufan LIU Yi LU Weiguo ZHANG Shiyuan XU 2023Science China Earth Sciences2023,66,2:2
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