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12篇 您的检索式:作者名="LI Xindan"
    题名 作者 年代 出处 被引量
1Has split share structure reform improved the efficiency of the Chinese stock market? 显示文摘Xindan Li Bing Zhang 2011Applied Economics Letters2011,,:1
2Design of Compressor Displacement Testing System for Air-conditioner of Air-conditioned Passenger Train显示文摘Li Hua Qi Xindan 2009IEEE Computer Society2009,,47:1
3Price discovery for copper futures ininformationally linked markets 显示文摘Li Xindan Zhang Bing 2009Applied Economics Let-ters2009,16,15:1
4Three dimensional nilpotent singularity and Sil' nikov bifurcation显示文摘LI Xindan LIU Haifei 2007Chaos Solitons and Fractals2007,31,1:1
5A Self‑Powered,Highly Embedded and Sensitive Tribo‑Label‑Sensor for the Fast and Stable Label Printer显示文摘Label-sensor is an essential component of the label printer which is becoming a most significant tool for the development of Internet of Things(IoT).However,some drawbacks of the traditional infrared label-sensor make the printer fail to realize the high-speed recognition of labels as well as stable printing.Herein,we propose a selfpowered and highly sensitive tribo-label-sensor(TLS)for accurate label identification,positioning and counting by embedding triboelectric nanogenerator into the indispensable roller structure of a label printer.The sensing mechanism,device parameters and deep comparison with infrared sensor are systematically studied both in theory and experiment.As the results,TLS delivers 6 times higher signal magnitude than traditional one.Moreover,TLS is immune to label jitter and temperature variation during fast printing and can also be used for transparent label directly and shows long-term robustness.This work may provide an alternative toolkit with outstanding advantages to improve current label printer and further promote the development of IoT.Xindan Hui Zhongjie Li Lirong Tang Jianfeng Sun Xingzhe Hou Jie Chen Yan Peng Zhiyi Wu Hengyu Guo 2023Nano-Micro Letters2023,15,2:1
6Highly selective removal of organic dyes from aqueous solutions with chitin beads entrapping rectorite显示文摘Guoxiang Li Daichan Lu Xindan Shi Mingyue Cai 2014J. Appl. Polym. Sci2014,,20:1
7Optimization of the cylindrical sieves for separating threshed rice mixture using EDEM显示文摘The design of the cylindrical sieve equipment used for the screening and separation of agricultural granular materials is mainly through the experimental method,which has the disadvantages of a long development cycle and high cost.To solve this problem,the discrete element method(DEM)was utilized to accurately build the particle models of threshed rice components(grains,shriveled grains,and short stalks),and simulated the separation of grains from the mixture in a cylindrical sieve.The influences of rotational speed(A),cylindrical sieve diameter(B),cylindrical sieve aperture(C),and inclinational angle(D)on screening cleaning rate,screening loss rate,and screening efficiency were investigated.Meanwhile,the optimal parameters of the cylindrical sieve were obtained using a central composite design(CCD)under response surface methodology(RSM).The results of CCD showed that the quadratic multinomial model is credible and revealed that the cylindrical sieve aperture has a significant impact on the screening characteristics.It is predicted that the optimal values for screening cleaning rate,loss rate,and efficiency were 97.84%,0.27%,and 85.38%,respectively,while A,B,C,and D were 23.6 r/min,297 mm,8.7 mm,and 2°,respectively.The experimental results using a real threshed rice mixture were found to be in good agreement with the optimal simulation results.This study proved a reliable research method and provides a design reference for the cylinder sieving systems for threshed rice or separation of other bulk material.Jianbo Yuan Jufei Wang Hua Li Xindan Qi Yongjian Wang Chao Li 2022International Journal of Agricultural and Biological Engineering2022,15,2:0
8Optimized design of the pneumatic precision seed-metering device for carrots显示文摘The small size, light weight, irregular shape, and impurities that characterize seed groups increase clogging tendencies in the traditional seed-metering device thereby making it difficult to achieve high-speed precision seeding. A pneumatic seed-metering device with good seed-filling performance for carrot was designed in this study. By analyzing the movement state of seeds in the device under the theoretical condition, it was concluded that the minimum critical negative pressure value of air chamber was 0.32 kPa, which provided a theoretical basis for simulation and testing. ANSYS 17.0 Software was used to simulate the shape of the seeding plate hole. By comparing the pressure, air flow stability between the suction surface and the plug removal surface of the convection field, it was concluded that the conical hole was optimal. A bench verification test was conducted on the device. The average qualified rate, missing rate, and replaying rate were 81.48%, 4.07%, and 14.45%, respectively, which provided a strong reference for the design of carrot precision seed-metering device.Dinghao Feng Xinping Sun Hua Li Xindan Qi Yongjian Wang Samuel Mbugua Nyambura 2023International Journal of Agricultural and Biological Engineering2023,16,6:0
9S19W,T27W,and N33OY mutations in ACE2 enhance SARS-CoV-2 S-RBD binding toward both wild-type and antibody-resistant viruses and its molecular basis显示文摘SARS-CoV-2 recognizes,via its spike receptor-binding domain(S-RBD),human angiotensin-converting enzyme 2(ACE2)to initiate infection.Ecto-domain protein of ACE2 can therefore function as a decoy.Here we show that mutations of S19W,T27W,and N330Y in ACE2 could individually enhance SARS-CoV-2 S-RBD binding.Y330 could be synergistically combined with either W19 or W27,whereas W19 and W27 are mutually unbeneficial.The structures of SARS-CoV-2S-RBD bound to the ACE2 mutants reveal that the enhan ced binding is mainly con tributed by the van der Waals interactio ns mediated by the aromatic side-chai ns from W19,W27,and Y330.While Y330 and W19/W27 are distantly located and devoid of any steric interference,W19 and W27 are shown to orient their side-chains toward each other and to cause steric conflicts,explai ning their in compatibility.Finally,using pseudotyped SARS-CoV-2 viruses,we dem on strate that these residue substitutions are associated with dramatically improved entry-inhibition efficacy toward both wild-type and antibody-resistant viruses.Taken together,our biochemical and structural data have delineated the basis for the elevated S-RBD binding associated with S19W,T27W,and N330Y mutations in ACE2,paving the way for potential application of these mutants in dinical treatment of COVID-19.Fei Ye Xi Lin Zimin Che Fanli Yang Sheng Lin Jing Yang Hua Chen Honglu Sun Lingling Wang Ao Wen Xindan Zhang Yushan Dai Yu Cao Jingyun Yang Guobo Shen Li Yang Jiong Li Zhenling Wang Wei Wang Xiawei Wei Guangwen Lu 2021Signal Transduction and Targeted Therapy2021,6,10:0
10Robust and Tumor-Environment-Activated DNA Cross-Linker Driving Nanoparticle Accumulation for Enhanced Therapeutics显示文摘Agglomeration of therapeutic nanoparticles in response to tumor microenvironments is a promising approach to enhance drug accumulation and improve therapeutic efficacy.Cytosine-rich DNA sequences show potential as ideal cross-linkers to drive nanoparticle agglomeration because they can sensitively respond to weak acidity and form interchain folding.However,the in vivo application of DNA is generally limited by its poor biostability;as a consequence,modifications with unprotected DNA cross-linkers can enhance the accumulation of nanoparticles twofold at the tumor site.Facing this challenge,we have designed and developed a protection and tumor-environment activation strategy to enable the in vivo application of a DNA cross-linker.Specifically,reactive oxygen species(ROS)-responsive polyethylene glycol(PEG)was modified on the nanoparticle surface together with the DNA crosslinker,which protects DNA from degradation during the blood circulation;meanwhile,when arriving at the tumor site,the nanoparticles shed the PEG shell as a response to ROS to uncover and activate the DNA cross-linkers.Using this strategy,a sevenfold enhancement in tumor accumulation was achieved owing to both superior pH sensitivity and improved stability of DNA cross-linkers.Finally,significantly improved therapeutic efficacy in in vivo anticancer treatment was realized by using this agglomeration strategy driven by protected and stimuli-activated DNA cross-linkers.Zhicong Chao Hongwei Lu Fan Xiao Chen Shao Zixiang Wei Jiantao Yu Xindan Zhang Li Lin Leilei Tian 2020CCS Chemistry2020,2,5:0
11High performance wide frequency band triboelectric nanogenerator based on multilayer wave superstructure for harvesting vibration energy显示文摘Efficiently converting the random vibration energy widely existed in human activities and natural environments into electricity is significant to the local power supply of sensor nodes in the internet of things.However,the conversion efficiency of energy harvester is relatively low due to the limitation of device’s intrinsic frequency.In this work,a multi-layered,wavy super-structuredtriboelectric nanogenerator(SS-TENG)is designed,whose output performances can be greatly promoted by combining the charge excitation mechanism.The steel sheet acts not only as an electrode but also as a supporter for the overall frame of SSTENG,which effectively improves the space utilization rate and results in a volume charge density up to 129 mC·m^(−3).In addition,the resonant frequency width of the SS-TENG can be widened by changing the parameters of the superstructure.For demonstration,the SS-TENG can sustainably drive two temperature and humidity sensors in parallel by harvesting vibration energy.This work may provide an effective strategy for harvesting vibration energy and broadening frequency response.Song Tang Wenxuan Chang Gui Li Jianfeng Sun Yan Du Xindan Hui Qian Tang Zhihao Hu Jiaqi Li Jie Chen Wencong He Hengyu Guo 2023Nano Research2023,16,5:0
12Optimization of a three-row air-suction Brassica chinensis precision metering device based on CFD-DEM coupling simulation显示文摘This study aimed to optimize a three-row air-suction Brassica chinensis precision metering device to improve the low seeding performance.ANSYS 17.0 Software was used to analyze the effect of different numbers of suction holes and different suction hole structures on the airflow field.It was found that a suction hole number of 60 was beneficial to the flow field stability and a conical hole structure was beneficial to the adsorption of seeds.Box-Behnken design experiments were carried out with negative pressure,rotational speed,and hole diameter as the experimental factors.The optimal parameter combination was achieved when the negative pressure was 3.96 kPa,the rotational speed of the seeding plate was 1.49 rad/s and the hole diameter was 1.10 mm.The qualification rate of inner,middle,and outer rings were 87.580%,90.548%,and 90.117%,respectively,and the miss seeding rate of inner,middle,and outer rings were 10.915%,7.139%,and 5.920%,respectively.Xinping Sun Hua Li Xindan Qi Dinghao Feng Jianqi Zhou Yongjian Wang Samuel Mbugua Nyambura Xiaoyu Zhang Xi Chen 2023International Journal of Agricultural and Biological Engineering2023,16,3:0
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