检索结果-南通市图书馆

Effects of different concentrations of celecoxib on proliferation and cell cycle of SH-SY-5Y cells and its mechanisms In vitro study

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2008年第2期3卷 133-137页

作者： Hu Zhou Wei wang hongyi wang Jinghua Li Department of Hematology Affiliated Hospital of Qingdao Medical College Qingdao University Qingdao 266003 Shandong Province China Department of Clinical Laboratory Qingdao Municipal Hospital Qingdao 266001 Shandong Province China

BACKGROUND： Highly selective cyclooxygenase-2 （COX-2） inhibitors have recently been approved for the treatment of colon cancer, breast cancer, urinary bladder cancer, and skin cancer. For the highly selective COX-2 celecoxib, the mechanism of action for inhibiting neuroblastoma cells is still uncertain. OBJECTIVE： To observe the influence of different celecoxib concentrations on proliferation and cell cycle of SH-SY-5Y cells in vitro and to reveal potential COX-2-independent mechanisms of celecoxib on SH-SY-5Y cells. DESIGN： Controlled experiment. SETTING： Department of Hematology, Affiliated Hospital of the Qingdao Medical College, Qingdao University, Shandong Province. MATERIALS： The study was performed at the Cerebrovascular Disease Institute of Shandong Province and the Laboratory of Molecular Biology, Affiliated Hospital of Qingdao Medical College, Qingdao University between September 2006 and June 2007. The SH-SY-5Y cell line was obtained from the Department of Molecular Biology, Qingdao Medical College, Qingdao University. Celecoxib was obtained from Pfizer Pharmaceuticals LLC, USA. Coulter DNA PREP reagent kit was purchased from Beckman Coulter, Inc. The antibodies against human CyclinD1, P21, and P16 were purchased from Santa Cruz Biotechnology. METHODS： SH-SY-5Y cells were treated with different concentrations of celecoxib （10, 20, 40, and 80 la mol/L） for 48 hours and comprised the experimental groups. The same concentrations of DMSO （dimethyl sulphoxide） treatment for 48 hours served as the control group. MAIN OUTCOME MEASURES： ① Cellular morphology of cells pre-treated and post-treated with celecoxib by inverted microscopy. ② Methabenzthiazuron assay was used to measure cell proliferation. ③ Cell cycle was measured by flow cytometry after incubation with different celecoxib concentrations for 48 hours. ④CyclinD1, P16, and P21 protein expression was detected by Western blot analysis. RESULTS： ① Cellular morphology： The shape of SH-SY-5Y cells pre

关键词： neuroblastoma cyclooxygenase celecoxib cyclins

Synthesis of high-entropy MXenes with high-efficiency electromagnetic wave absorption

在线全文

学校读者我要写书评

暂无评论

Journal of Advanced Ceramics 2023年第10期12卷 1902-1918页

作者： Linjing Qiao Jianqiang Bi Guandong Liang Yao Yang hongyi wang Shaoyin wang Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China School of Materials Science and Engineering Shandong UniversityJinan 250061China

High-entropy MXenes,as a new emerging class of materials,possess diverse compositions,unexpected physicochemical characteristics,and great potentials for electromagnetic(EM)wave ***,two single-to-few-layer high-entropy MXenes,(Mo_(0.25)Cr_(0.25)Ti_(0.25)V_(0.25))3 C2 T_(x)and(Mo_(0.2)Cr_(0.2)Nb_(0.2)Ti_(0.2)V_(0.2))_(4)C_(3)T_(x),were synthesized for the first *** the exfoliation and delamination processes,the structural,morphological,and compositional evolutions were analyzed,verifying the successful formation of single-to-few-layer two-dimensional MXene *** indicate that with the filling content of only 35 wt%,MXene powder filled composites exhibit high-efficiency EM wave absorption *** f-(Mo_(0.25)Cr_(0.25)Ti_(0.25)V_(0.25))_(3)C_(2)T_(x)possesses the minimum reflection loss(RL min)of−45.0 dB with the matching thickness of 1.52 mm and the maximum effective absorption bandwidth(EAB)of 5.6 GHz at 1.65 mm ***,f-(Mo_(0.2)Cr_(0.2)Nb_(0.2)Ti_(0.2)V_(0.2))_(4)C_(3)T_(x)can attain an RL min of−52.8 dB with the thickness of 1.58 mm and an optimum EAB value of 3.6 GHz at 1.50 *** satisfactory EM wave absorption efficiency and bandwidth,thin matching thickness,and low filling content prove the lightweight advantage and great application potential of high-entropy MXenes in EM wave *** this work,the high-entropy strategy is applied to tune the EM wave absorption performances for ***,high-entropy engineering is expected to provide control and tunability of many other properties,such as electrochemical,catalytic,and mechanical behaviors.

关键词： high-entropy MAX phase MXene electromagnetic wave absorption

Sea-surface reflection-aided underwater localization with unknown sound speed

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2019年第4期62卷 209-211页

作者： Bingbing ZHANG Yongchang HU hongyi wang Zhaowen ZHUANG School of Electronic Science National University of Defense Technology Xi'an Research Center Cloud Core Network Product Line/R&D Mgmt Huawei Technologies Co. Ltd

Dear editor,The problem of underwater localization has drawn considerable attention in recent years [1]. However, it is quite challenging due to a lack of measurements and the unknown sound propagation speed(SPS), eve... 详细信息

关键词： Sea-surface reflection-aided underwater localization with unknown sound speed

Wavelet based deep learning for depth estimation from single fringe pattern of fringe projection profilometry

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Optoelectronics Letters 2022年第11期18卷 699-704页

作者： ZHU Xinjun HAN Zhiqiang SONG Limei wang hongyi WU Zhichao School of Artificial Intelligence Tiangong UniversityTianjin 300387China

Depth estimation from single fringe pattern is a fundamental task in the field of fringe projection three-dimensional(3D) measurement. Deep learning based on a convolutional neural network(CNN) has attracted more and more attention in fringe projection profilometry(FPP). However, most of the studies focus on complex network architecture to improve the accuracy of depth estimation with deeper and wider network architecture, which takes greater computational and lower speed. In this letter, we propose a simple method to combine wavelet transform and deep learning method for depth estimation from the single fringe pattern. Specially, the fringe pattern is decomposed into low-frequency and high-frequency details by the two-dimensional(2D) wavelet transform, which are used in the CNN network. Experiment results demonstrate that the wavelet-based deep learning method can reduce the computational complexity of the model by 4 times and improve the accuracy of depth estimation. The proposed wavelet-based deep learning models(UNet-Wavelet and hNet-Wavelet) are efficient for depth estimation of single fringe pattern, achieving better performance than the original UNet and hNet models in both qualitative and quantitative evaluation.

关键词： measurement network estimation

Synthesis and electromagnetic wave absorption performances of a novel(Mo_(0.25)Cr_(0.25)Ti_(0.25)V_(0.25))_(3)AlC_(2)high-entropy MAX phase

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第6期137卷 112-122页

作者： Linjing Qiao Jianqiang Bi Guandong Liang Chen Liu Zhuangzhuang Yin Yao Yang hongyi wang Shaoyin wang Mengmeng Shang Weili wang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China School of Materials Science and Engineering Shandong UniversityJinan 250061China

Herein,a novel kind of high-entropy MAX phases,(Mo_(0.25)Cr_(0.25)Ti_(0.25)V_(0.25))_(3)AlC_(2)powders were success-fully synthesized by a newly proposed two-step solid state reaction *** oxidation experiments demonstrate that the oxidation products of Al_(2)Mo_(3)O_(12) and rutile TiO 2 are formed at about 600 and 800℃,***,the dielectric and electromagnetic(EM)wave absorption properties of(Mo_(0.25)Cr_(0.25)Ti_(0.25)V_(0.25))_(3)AlC_(2)powders and those after oxidation at different temperatures were also *** results show that the as-synthesized(Mo_(0.25)Cr_(0.25)Ti_(0.25)V_(0.25))_(3)AlC_(2)powders possess excellent EM wave absorption performances with the minimum reflection loss(RL)of-45.80 dB(at 1.7 mm thickness)and the maximum effective absorption bandwidth(E AB)of 3.6 GHz(at 1.5 mm thickness).After oxidation at 400-800℃,due to the coupling of conductivity loss and polarization loss,(Mo_(0.25)Cr_(0.25)Ti_(0.25)V_(0.25))_(3)AlC_(2)powders can retain good EM wave absorption properties in a certain frequency *** this paper,the effects of oxidation on EM wave absorption properties of high-entropy MAX phases were systematically investigated for the first *** work manifests that high-entropy MAX phases are promising EM wave absorbing candidates and can maintain good EM wave absorption performances after oxidation.

关键词： (Mo_(0.25)Cr_(0.25)Ti_(0.25)V_(0.25))_(3)AlC_(2) High-entropy MAX phase Two-step synthesis Oxidation Electromagnetic wave absorption

Phase unwrapping based on deep learning in light field fringe projection 3D measurement

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optoelectronics Letters 2023年第9期19卷 556-562页

作者： ZHU Xinjun ZHAO Haichuan YUAN Mengkai ZHANG Zhizhi wang hongyi SONG Limei School of Artificial Intelligence Tiangong UniversityTianjin 300387China Tianjin Key Laboratory of Intelligent Control of Electrical Equipment Tiangong UniversityTianjin 300387China School of Control Science and Engineering Tiangong UniversityTianjin 300387China

Phase unwrapping is one of the key roles in fringe projection three-dimensional(3D)measurement *** propose a new method to achieve phase unwrapping in camera array light filed fringe projection 3D measurement based on deep learning.A multi-stream convolutional neural network(CNN)is proposed to learn the mapping relationship between camera array light filed wrapped phases and fringe orders of the expected central view,and is used to predict the fringe order to achieve the phase *** are performed on the light field fringe projection data generated by the simulated camera array fringe projection measurement system in Blender and by the experimental 3×3 camera array light field fringe projection *** performance of the proposed network with light field wrapped phases using multiple directions as network input data is studied,and the advantages of phase unwrapping based on deep learning in light filed fringe projection are demonstrated.

关键词： Phase unwrapping based on deep learning in light field fringe projection 3D measurement

3D velocity field reconstruction of gas-liquid two-phase flow based on space-time multi-scale binocular-PIV technology

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2022年第10期18卷 613-617页

作者： wang hongyi DOU Gongcheng ZHANG Hao ZHU Xinjun SONG Limei Tianjin Key Laboratory of Intelligent Control of Electrical Equipment School of Artificial IntelligenceTiangong UniversityTianjin300387China Tianjin Key Laboratory of Intelligent Control of Electrical Equipment School of Control Science and EngineeringTiangong UniversityTianjin300387China

For particle image velocimetry(PIV) technique, the two-dimensional(2D) PIV by one camera can only obtain 2D velocity field, while three-dimensional(3D) PIV based on tomography by three or four cameras is always complex and expensive. In this work, a binocular-PIV technology based on two cameras was proposed to reconstruct the 3D velocity field of gas-liquid two-phase flow, which is a combination of the binocular stereo vision and cross-correlation based on fast Fourier transform(CC-FFT). The depth of particle was calculated by binocular stereo vision on space scale, and the plane displacement of particles was acquired by CC-FFT on time scale. Experimental results have proved the effectiveness of the proposed method in 3D reconstruction of velocity field for gas-liquid two-phase flow.

关键词： flow flow phase

播期和播量对超晚播冬小麦基部节间显微结构及抗倒伏指数的影响

在线全文

学校读者我要写书评

暂无评论

核农学报 2025年第2期39卷 377-390页

作者：田文强张强斌张君聂凌帆孙刚刚王泓懿张金汕石书兵新疆农业大学农学院新疆乌鲁木齐830052

为筛选北疆超晚播小麦高产抗倒伏的播期和播量组合,明确小麦基部茎秆显微结构变化特点及其与抗倒伏指数的关系,采用裂区试验设计,主区设3种超晚播期:S1(10月25日)、S2(11月4日)、S3(11月14日),副区设4个播量:P1(337.5 kg·hm^(-2))、P2(... 详细信息

为筛选北疆超晚播小麦高产抗倒伏的播期和播量组合,明确小麦基部茎秆显微结构变化特点及其与抗倒伏指数的关系,采用裂区试验设计,主区设3种超晚播期:S1(10月25日)、S2(11月4日)、S3(11月14日),副区设4个播量:P1(337.5 kg·hm^(-2))、P2(450 kg·hm^(-2))、P3(562.5 kg·hm^(-2))、P4(675 kg·hm^(-2)),以当地适宜播期和播量(9月25日、270 kg·hm^(-2))为对照(CK),研究播期和播量对超晚播小麦开花期、乳熟期及蜡熟期的基部节间显微结构和抗倒伏指数及产量的影响。结果表明,开花后,随着小麦生育进程的推进,抗倒伏指数逐渐降低,基部自下而上节间显微结构质量变差,且第1、2、3节间变化规律一致。与CK相比,超晚播小麦茎秆显微结构各项指标(机械和薄壁组织层数和厚度、大小维管束个数、大维管束周长和面积)降低,显微组织变小,抗倒伏指数降低。同一播量不同播期小麦基部茎秆显微结构各项指标和抗倒伏指数均表现为S3>S1>S2;同一播期下,随着播量的提高,显微结构各项指标和抗倒伏指数降低;播期与播量对各指标不存在互作效应。抗倒伏指数与基部节间小维管束个数呈极显著负相关,与其余显微结构指标呈极显著正相关,以薄壁组织对提高小麦抗倒伏作用最强。超晚播条件下提高小麦播量有利于增加穗数,弥补穗粒数和千粒重的损失,进而提高产量,以S2P2穗数最高,产量最佳。综上,北疆超晚播小麦于11月4日播种450 kg·hm^(-2)可获得高产且抗倒伏植株。本研究结果为超晚播小麦稳产丰产提供了理论依据.

关键词：播期播量超晚播显微结构倒伏

维普期刊数据库博看期刊

A Survey of Applications Research on Content-Centric Networking

在线全文

学校读者我要写书评

暂无评论

China Communications 2019年第9期16卷 122-140页

作者： Xiuquan Qiao hongyi wang Wei Tan Athanasios V.Vasilakos Junliang Chen MBrian Blake State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China Information Engineering College Henan University of Science and TechnologyLuoyang 471003China IBM T.J.Watson Research Center Yorktown HeightsNY 10598USA The Department of Electrical and Computer Engineering National Technical University of AthensAthens 157 80Greece College of Computing and Informatics Drexel UniversityPhiladelphiaPA 1904USA

As a named data-based clean-slate future Internet architecture,Content-Centric Networking(CCN)uses entirely different protocols and communication patterns from the host-to-host IP *** CCN,communication is wholly driven by the data *** must send Interest packets with the content name and not by the host’s network *** nature of in-network caching,Interest packets aggregation and hop-byhop communication poses unique challenges to provision of Internet applications,where traditional IP network no long works *** paper presents a comprehensive survey of state-of-the-art application research activities related to CCN *** main aims in this survey are(a)to identify the advantages and drawbacks of CCN architectures for application provisioning;(b)to discuss the challenges and opportunities regarding service provisioning in CCN architectures;and(c)to further encourage deeper thinking about design principles for future Internet architectures from the perspective of upper-layer applications.

关键词： Content-centric networking(CCN) named-data networking (NDN) applications information-centric networking future Internet