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| 1 | Three-dimensional Finite Element Analysis of the Mechanical Properties of Helical Thread Connection显示文摘Conventional analytical and numerical methods for the mechanical properties of helical threads are relied on many assumptions and approximations and thus hardly yield satisfied results. A parameterized 3D finite element model of bolted joints with real helical thread geometry is established and meshed with refined hexahedral elements. The Von Mises plasticity criterion, kinematic hardening rule of materials and interfacial contacts are employed to make it possible for the suggested model be able to approach real assembly conditions. Then, the mechanical properties of bolted joints with different thread pitches, thread numbers and modular ratios are investigated, including the contact pressure distribution at joint interfaces, the axial load distribution and stress concentration in screw threads during the loading and unloading process. Simulation results indicate that the load distribution in screw threads produced by the suggested model agrees well the results from CHEN's photoelastic tests. In addition, an interesting phenomenon is found that tightening the bolt with a large preload first and then adjusting the clamping force by unloading can make the load distribution more uniform and reduce the maximum residual equivalent stress in thread roots by up to 40%. This research provides a simple and practical approach to constructing the 3D finite element model and predicting the mechanical properties of helical thread connection. | YANG Guoqing HONG Jun ZHU Linbo LI Baotong XIONG Meihua WANG Fei | 2013 | Chinese Journal of Mechanical Engineering2013，26，3： | 19 |
| 2 | Penumbral imaging and numerical evaluation of large area source neutron imaging system显示文摘The fusion neutron penumbral imaging system Monte Carlo model was established. The transfer functions of the two discrete units in the neutron source were obtained in two situations:Imaging in geometrical near-optical and real situation. The spatial resolutions of the imaging system in two situations were evaluated and compared. The penumbral images of four units in the source were obtained by means of 2-dimensional (2D) convolution and Monte Carlo simulation. The penumbral images were reconstructed with the same method of filter. The same results were confirmed. The encoding essence of penumbral imaging was revealed. With MCNP(Monte Carlo N-particle) simulation,the neutron penumbral images of the large area source (200 μm×200 μm) on scintillation fiber array were obtained. The improved Wiener filter method was used to reconstruct the penumbral image and the source image was obtained. The results agree with the preset neutron source image. The feasibility of the neutron imaging system was verified. | YueLei Wu HuaSi Hu BoPing Zhang LinBo Li Da Chen Qing Shan Jie Zhu | 2009 | Science China(Technological Sciences)2009，52，9： | 3 |
| 3 | Regulation of mATG9 trafficking by Src- and ULK1mediated phosphorylation in basal and starvation-induced autophagy显示文摘Autophagy 要求多样的膜来源并且包含 mATG9 的膜 trafficking,在 ATG 家庭的唯一的膜蛋白质。然而,为 autophagy 开始的 mATG9 trafficking 的分子的规定仍然保持不清楚。这里,我们识别了在 mATG9 的 cytosolic N 终点以内排序信号的二保存经典适配器蛋白质,它调停从经由和 AP1/2 建筑群的相互作用的血浆膜和 trans-Golgi 网络(TGN ) 的 mATG9 的 trafficking。在 Tyr8 到的 Src phosphorylates mATG9 处于不着重的条件维持它的 endocytic 和组成的 trafficking。响应饥饿,在由 Src 的 Tyr8 并且在由 ULK1 的 Ser14 的 mATG9 的 phosphorylation 机能上地合作支持在 mATG9 和 AP1/2 建筑群之间的相互作用,为 autophagy 从血浆膜和 juxta 原子的区域导致 mATG9 的再分配到外部水池开始。我们的调查结果揭开 mATG9 trafficking 的新奇机制并且建议基础、导致压力的 autophagy 的协作。 | Changqian Zhou Kaili Ma Ruize Gao Chenglong Mu Linbo Chen Qiangqiang Liu Qian Luo Du Feng Yushan Zhu Quan Chen | 2017 | Cell Research2017，27，2： | 2 |
| 4 | Evaluation of urban redevelopment impact on non-motorized traffic显示文摘As an important component of city evolution,urban land redevelopment has an impact on transportation system.The current traffic impact analysis(TLA) is lack of a comprehensive component for non-motorized transportation under redevelopment.For a better guidance of land redevelopment and non-motorized transportation planning,it is necessary to evaluate the negative impact of redevelopment on non-motorized traffic in the TIA.In this paper,an evaluation framework for the impact analysis is built up.We organized the procedures and components of impact evaluation,and proposed the corresponding qualitative and quantitative evaluation indicators for non-motorized traffic under redevelopment.Level of service(LOS) and its criterion are employed for external impact evaluation,and level of safety,convenience,independence,and comfort which are four aspects of quality of service(QOS) are proposed to analyze the internal impact.The framework is applied to a redevelopment study in Shanghai,China.The case study results indicate that the redevelopment from a residential area to a mixed commercial area has a significant impact on non-motorized traffic.The potential negative impact from both external and internal traffic can be minimized by reasonable improvements in the internal land use design. | Yanli Wang Liang Li Xiaoyu Zhu Bing Wu Linbo Li | 2015 | Journal of Traffic and Transportation Engineering(English Edition)2015，2，3： | 1 |
| 5 | Ex- perimental study on initial loss of tension in bolted joints 显示文摘 | ZHU Linbo HONG Jun YANG Guoqing | 2015 | Proceedings of the Institution of Mechanical Engineers: Part C Journal of Mechanical Engineering Science2015，20，32042052062072： | 1 |
| 6 | Application of Fetal Carti-lage Grafts in the Reshaping of the Nasal Tip显示文摘 | Wang Lu Liu Linbo Zhu Ying | | 0，，05： | 1 |
| 7 | Systematic investigation of millimeter-wave optic modulation performance in thin-film lithium niobate显示文摘Millimeter-wave(mmWave)band(30–300 GHz)is an emerging spectrum range for wireless communication,short-range radar,and sensor applications.mmWave-optic modulators that could efficiently convert mmWave signals into the optical domain are crucial components for long-haul transmission of mmWave signals through optical networks.At these ultrahigh frequencies,however,the modulation performances are highly sensitive to the transmission line loss as well as the velocity-and impedance-matching conditions,while precise measurements and modeling of these parameters are often non-trivial.Here we present a systematic investigation of the mmWave-optic modulation performances of thin-film lithium niobate modulators through theoretical modeling,electrical verifications,and electro-optic measurements at frequencies up to 325 GHz.Based on our experimentally verified model,we demonstrate thin-film lithium niobate mmWave-optic modulators with a measured 3-dB electro-optic bandwidth of 170 GHz and a 6-dB bandwidth of 295 GHz.The device also shows a low RF half-wave voltage of 7.3 V measured at an ultrahigh modulation frequency of 250 GHz.This work provides a comprehensive guideline for the design and characterization of mmWave-optic modulators and paves the way toward future integrated mmWave photonic systems for beyond-5G communication and radar applications. | YIWEN ZHANG LINBO SHAO JINGWEI YANG ZHAOXI CHEN KE ZHANG KAM-MAN SHUM DI ZHU CHI HOU CHAN MARKO LONČAR CHENG WANG | 2022 | Photonics Research2022，10，10： | 1 |
| 8 | Spectral control of nonclassical light pulses using an integrated thin-film lithium niobate modulator显示文摘Manipulating the frequency and bandwidth of nonclassical light is essential for implementing frequency-encoded/multiplexed quantum computation,communication,and networking protocols,and for bridging spectral mismatch among various quantum systems.However,quantum spectral control requires a strong nonlinearity mediated by light,microwave,or acoustics,which is challenging to realize with high efficiency,low noise,and on an integrated chip.Here,we demonstrate both frequency shifting and bandwidth compression of heralded single-photon pulses using an integrated thin-film lithium niobate(TFLN)phase modulator.We achieve record-high electro-optic frequency shearing of telecom single photons over terahertz range(±641 GHz or±5.2 nm),enabling high visibility quantum interference between frequency-nondegenerate photon pairs.We further operate the modulator as a time lens and demonstrate over eighteen-fold(6.55 nm to 0.35 nm)bandwidth compression of single photons.Our results showcase the viability and promise of on-chip quantum spectral control for scalable photonic quantum information processing. | Di Zhu Changchen Chen Mengjie Yu Linbo Shao Yaowen Hu CJXin Matthew Yeh Soumya Ghosh Lingyan He Christian Reimer Neil Sinclair Franco N.C.Wong Mian Zhang Marko Loncar | 2022 | Light(Science & Applications)2022，11，12： | 0 |
| 9 | CA-YOLOv5: Detection model for healthy and diseased silkworms in mixed conditions based on improved YOLOv5显示文摘The accurate identification and localization of diseased silkworms is an important task in the research of disease precision control technology and equipment development in the sericulture industry. However, the existing deep learning-based methods for this task are mainly based on image classification, which fails to provide the location information of diseased silkworms. To this end, this study proposed an object detection-based method for identifying and locating healthy and diseased silkworms. Images of mixed healthy and diseased silkworms were collected using a mobile phone, and the category and location of each silkworm were labeled using LabelImg as a labeling tool to construct an image dataset for object detection. Based on the one-step detection model YOLOv5s, the ConvNeXt-Attention-YOLOv5 (CA-YOLOv5) model was designed in which the large kernel with depth-wise separable convolution (7×7 dw-conv) of ConvNeXt was adopted to expand receptive fields and the channel attention mechanism ECANet was added to enhance the capability of feature extraction. Experiments showed that the mean average precision (mAP) values of CA-YOLOv5 for healthy and diseased silkworms reached 96.46%, which is 1.35% better than that achieved via YOLOv5s. At the same time, the overall performance of CA-YOLOv5 was significantly better than state-of-the-art one-step models, such as Single Shot MultiBox Detector (SSD), CenterNet, and EfficientDet, and even improved YOLOv5 using image attention mechanism and a lightweight backbone, like SENet-YOLOv5 and MobileNet-YOLOv5. The results of this study can provide an important basis for the accurate positioning of diseased silkworms in precision disease control technology and equipment development. | Hongkang Shi Wenfu Xiao Shiping Zhu Linbo Li Jianfei Zhang | 2023 | International Journal of Agricultural and Biological Engineering2023，16，6： | 0 |
| 10 | Fringe optimization for structured illumination super-resolution microscope with digital micromirror device显示文摘Structured illumination microscopy(SIM)is a promising super-resolution technique for imaging subcellular structures and dynamics due to its compatibility with most commonly usedffuorescent labeling methods.Structured illumination can be obtained by either laser interference or projection of fringe patterns.Here,we proposed a fringe projector composed of a compact multiwavelength LEDs module and a digital micromirror device(DMD)which can be directly attached to most commercial invertedffuorescent microscopes and update it into a SIM system.The effects of the period and duty cycle of fringe patterns on the modulation depth of the structured lightfield were studied.With the optimized fringe pattern,1:6×resolution improvement could be obtained with high-end oil objectives.Multicolor imaging and dynamics of subcellular organelles in live cells were also demonstrated.Our method provides a low-cost solution for SIM setup to expand its wide range of applications to most research labs in thefield of life science and medicine. | Xibin Yang Qian Zhu Zhenglong Sun Gang Wen Xin Jin Linbo Wang Jialin Liu Daxi Xiong Hui Li | 2019 | Journal of Innovative Optical Health Sciences2019，，3： | 0 |
| 11 | Tissue Engineering Materials: Preshaping and Injectable显示文摘 | Dianying Jing Zhen Wang Wen Zhu Junchuan Zhang Shifeng Duan Stefan Graeter Jianguo Sun Jinghuan Huang Huan Zhang Jian Tang Peng Liu Linbo Wu Hong Zhang Jiandong Ding | 2005 | Journal of US-China Medical Science2005，2，4： | 0 |
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