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| 1 | Information acquisition system of multipoint soil surface height variation for profiling mechanism of seeding unit of precision corn planter显示文摘The emergence rate and vitality of maize are directly affected by the sowing depth,and the uniformity of this depth is an important performance indicator of a planter,while the effective soil surface height information acquisition is the prerequisite for ensuring the accuracy of sowing depth control.The soil surface height variation acquisition system of a precision corn planter often produces profiling errors when performing active profiling due to interference from ground debris.In this study,a multipoint soil surface height variation information acquisition system was investigated,which consists of a ranging sensor group and a microcontroller unit(MCU)using a data comparison and screening method.The structure and specifications of the ranging sensors were determined according to the soil surface height variation and debris size,and a nonessential profiling control program was developed.Performed tests on the information acquisition system indicated that the measurement accuracy of the system was 3 mm,and when advancing at a speed of 8 km/h,the accuracy of the profiling decision and the system stability were 97.1%and 94.1%,respectively,indicating that the system was capable of nonessential profile control.The designed ranging system could provide a reference for the design of a ground information acquisition system of precision planters with an active profiling mechanism. | Bo Zhang Wei Zhang Liqiang Qi Haiba Fu Lijuan Yu Rui Li Yue Zhao Xinxian Ma | 2018 | International Journal of Agricultural and Biological Engineering2018，11，6： | 4 |
| 2 | Control of fibrosis and hypertrophic scar formation via glycolysis regulation with IR780显示文摘Background:Hypertrophic scars(HS)represent one of the most common clinical challenges due to unsatisfactory therapeutic results.HS formation is associated with the abnormal activation of fibroblasts and their excessive fibrotic behavior.Glycolysis dysregulation has been shown to participate in the incidence and progression of various fibrotic diseases and shows potential as a means of controlling HS formation.This work aimed to discuss the impact of augmented glycolysis on HS and to propose a method for controlling HS formation through glycolysis regulation.Methods:Here,augmented glycolysis was confirmed together with enhanced fibrotic activity in both HS fibroblasts(HFs)and HS tissues,and the suppression of glycolysis also attenuated fibroblast activation.We also introduced IR780,a heptamethine cyanine dye,to regulate glycolysis for the control of HS formation.Results:In vitro,cell studies indicated that IR780 significantly down-regulated glycolysis and suppressed the fibrotic activity of HFs.In vivo,the intralesional injection of IR780 into rabbit HS models led to the downregulation of glycolysis and the control of HS formation.Furthermore,IR780 accumulated preferentially in activated fibroblasts in both in vitro and in vivo studies,and thus specifically downregulated glycolysis and efficiently controlled fibrosis by targeting activated fibroblasts.Conclusions:This work identified a strategy for controlling fibrosis and HS formation from the perspective of glycolysis regulation with IR780 targeting of activated fibroblasts. | Xinxian Meng Zhixi Yu Wanyu Xu Jun Chai Shuo Fang Peiru Min Yunsheng Chen Yixin Zhang Zheng Zhang | 2022 | Burns & Trauma2022，10，1： | 2 |
| 3 | Deep global-attention based convolutional network with dense connections for text classification显示文摘Text classification is a classic task innatural language process(NLP).Convolutional neural networks(CNNs)have demonstrated its effectiveness in sentence and document modeling.However,most of existing CNN models are applied to the fixed-size convolution filters,thereby unable to adapt different local interdependency.To address this problem,a deep global-attention based convolutional network with dense connections(DGA-CCN)is proposed.In the framework,dense connections are applied to connect each convolution layer to each of the other layers which can accept information from all previous layers and get multiple sizes of local information.Then the local information extracted by the convolution layer is reweighted by deep global-attention to obtain a sequence representation with more valuable information of the whole sequence.A series of experiments are conducted on five text classification benchmarks,and the experimental results show that the proposed model improves upon the state of-the-art baselines on four of five datasets,which can show the effectiveness of our model for text classification. | Tang Xianlun Chen Yingjie Xu Jin Yu Xinxian | 2020 | The Journal of China Universities of Posts and Telecommunications2020，27，2： | 1 |
| 4 | Soft-bionic-fishtail structured triboelectric nanogenerator driven by flow-induced vibration for low-velocity water flow energy harvesting显示文摘To adapt to the low-velocity water flow closely related to human life,the natural energy can be efficiently harvested and used to power monitoring devices.Herein,a triboelectric soft fishtail(TE-SFT)driven by flow-induced vibration(FIV)effect is proposed based on the soft material synthesis technology.Specifically,inspired by the fishtail fin,a bluff body with the cross-section of fishtail-shaped is designed,and has a preferable vortex effect by fluid simulation.In power generation part,the triboelectric nanogenerator(TENG)is designed to act as an inertial pendulum structure by geometric method.Under the FIV effect,the TESFT driven by fishtail-shaped bluff body swings like a fish in the water and then brings the inertial pendulum to acquire the oscillation for harvesting energy from low-velocity water flow.The TE-SFT attains an open-circuit voltage(VOC)of 200 V to 313 V at the flow velocities of 0.24 to 0.89 m/s.Additionally,after 30 days of water immersion,the VOC of TE-SFT retains 96.81%.In demonstration,the TE-SFT is applied to power the temperature and humidity sensor through harvesting water flow energy.This work also provides a way for self-powered system based on the TENG and soft bionic fish in water environment. | Sheng Zhang Zhaoxu Jing Xinxian Wang Mingkang Zhu Xin Yu Jianyang Zhu Tinghai Cheng Hongwei Zhao Zhong Lin Wang | 2023 | Nano Research2023，16，1： | 1 |
| 5 | Localized surface plasmon resonance improves transdermal photodynamic therapy of hypertrophic scars显示文摘Photodynamic therapy(PDT)is an emerging therapeutic strategy for hypertrophic scars(HS),which is heavily dependent on reactive oxygen species(ROS)generation.However,the unsatisfactory delivery and excitation of 5-aminolevulinic acid(ALA,a commercial photosensitizer in dermatology)result in an insufficient ROS generation,and thus limit the clinical application of PDT treating HS(HS-PDT).Consequently,sophisticated transdermal co-delivery nanoethosomes(named A/A-ES)with ALA and Au nanotriangles(AuNTs)in cores are prepared via an in-situ seed-mediated growth method,and then applied to improve HS-PDT through localized surface plasmon resonance(LSPR)-enhanced ROS generation.A/A-ES display a satisfactory performance in co-delivery in HS tissue with sufficient protoporphyrin IX production and LSPR effect in cytoplasm,which is beneficial for ALA excitation as well as ROS generation.In vitrolvivo studies reveal that A/A-ES significantly improve HS-PDT in promoting to fibroblast apoptosis and collagen remodeling through LSPR-enhanced ROS generation.Therefore,this study provides a feasible strategy that integrates transdermal delivery and LSPR to enable the beneficial effects of HS-PDT through boosting the delivery and excitation of ALA. | Yunsheng Chen Zhixi Yu Xinxian Meng Hua Li Xiyang Sun Dannong He Yixin Zhang Zheng Zhang | 2022 | Nano Research2022，15，5： | 0 |
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