The authors withdraw the research paper“High-Efficiency Graphene Photo Sensor Using a Transparent Electrode”,which was published in Chinese Physics Letters 28(10),107301(2011),due to the major mistakes in management...The authors withdraw the research paper“High-Efficiency Graphene Photo Sensor Using a Transparent Electrode”,which was published in Chinese Physics Letters 28(10),107301(2011),due to the major mistakes in management and experiment,which led to the authors adopting inappropriate data published without sufficient examination and permission processes.展开更多
We synthesized B-He/B-GREDVY and immobilized them on avidin-coated surfaces.To examine the immobilization of molecules in the material, the following experiments were performed:fluorescein isothiocyanate(FITC) fluores...We synthesized B-He/B-GREDVY and immobilized them on avidin-coated surfaces.To examine the immobilization of molecules in the material, the following experiments were performed:fluorescein isothiocyanate(FITC) fluorescence staining, water contact angle and atomic force microscopy(AFM) measurements. Besides, the biological evaluation experiments were also performed, such as platelets adhesion and activation, the culturing of smooth muscle cells(SMC) and endothelial cells(EC). These experimental results show that the modified surfaces could prevent the hyperproliferation of SMC, and promote the proliferation and migration of EC and EPC. Furthermore, the adding of VEGF improved the EC adhesion in a dynamic environment. Generally, it is expected that the modified surfaces could be used to accelerate the formation of the newly endothelial layer for the construction of platforms for coronary artery stent therapy.展开更多
在农业院校中,行政管理专业实践教学体系改革一直是一个重要的研究方向。而OBE(Outcome Based Education,成果导向教育)理念基于以学生为中心、以成果为导向和持续改进3大原则,被广泛应用到农业院校的行政管理专业实践教学中,并取得了...在农业院校中,行政管理专业实践教学体系改革一直是一个重要的研究方向。而OBE(Outcome Based Education,成果导向教育)理念基于以学生为中心、以成果为导向和持续改进3大原则,被广泛应用到农业院校的行政管理专业实践教学中,并取得了显著的成效。文章以OBE理念为指导,结合东北农业大学行政管理专业教学实际,探索行政管理专业实践教学体系改革路径。展开更多
针对目前深度学习模型通常只能提取单一尺度岩相特征,无法获得多尺度信息且没有充分适应测井曲线自身形态特点影响岩相识别的问题,基于深度学习以Resnet50为基础网络,设计开发多尺度特征提取模块SMGC(strip-pooling and multi-scale gro...针对目前深度学习模型通常只能提取单一尺度岩相特征,无法获得多尺度信息且没有充分适应测井曲线自身形态特点影响岩相识别的问题,基于深度学习以Resnet50为基础网络,设计开发多尺度特征提取模块SMGC(strip-pooling and multi-scale group convolution),并加入改进的ECAs(efficient channel attention strengthen)注意力模块增强对测井曲线条形纹理信息关注度,提出一种SMGC-ECAs-Resnet致密砂岩测井曲线岩相识别方法。以松辽盆地三肇凹陷扶余油层为例,对测井曲线数据预处理构建图像数据集,利用SMGC-ECAs-Resnet网络模型对其进行识别得到分类结果,设置对比试验和鲁棒性实验证明模型有效性。结果表明:所提出的SMGC-ECAs-Resnet网络岩相识别准确率达到91.9%,为复杂致密砂岩岩相的测井识别提供了新的方法。展开更多
文摘The authors withdraw the research paper“High-Efficiency Graphene Photo Sensor Using a Transparent Electrode”,which was published in Chinese Physics Letters 28(10),107301(2011),due to the major mistakes in management and experiment,which led to the authors adopting inappropriate data published without sufficient examination and permission processes.
基金Funded by the National Natural Science Foundation of China(Nos.32271377 and 31870955)the National Key Research and Development of China (No.2020YFC1107300-03)。
文摘We synthesized B-He/B-GREDVY and immobilized them on avidin-coated surfaces.To examine the immobilization of molecules in the material, the following experiments were performed:fluorescein isothiocyanate(FITC) fluorescence staining, water contact angle and atomic force microscopy(AFM) measurements. Besides, the biological evaluation experiments were also performed, such as platelets adhesion and activation, the culturing of smooth muscle cells(SMC) and endothelial cells(EC). These experimental results show that the modified surfaces could prevent the hyperproliferation of SMC, and promote the proliferation and migration of EC and EPC. Furthermore, the adding of VEGF improved the EC adhesion in a dynamic environment. Generally, it is expected that the modified surfaces could be used to accelerate the formation of the newly endothelial layer for the construction of platforms for coronary artery stent therapy.
文摘在农业院校中,行政管理专业实践教学体系改革一直是一个重要的研究方向。而OBE(Outcome Based Education,成果导向教育)理念基于以学生为中心、以成果为导向和持续改进3大原则,被广泛应用到农业院校的行政管理专业实践教学中,并取得了显著的成效。文章以OBE理念为指导,结合东北农业大学行政管理专业教学实际,探索行政管理专业实践教学体系改革路径。
文摘针对目前深度学习模型通常只能提取单一尺度岩相特征,无法获得多尺度信息且没有充分适应测井曲线自身形态特点影响岩相识别的问题,基于深度学习以Resnet50为基础网络,设计开发多尺度特征提取模块SMGC(strip-pooling and multi-scale group convolution),并加入改进的ECAs(efficient channel attention strengthen)注意力模块增强对测井曲线条形纹理信息关注度,提出一种SMGC-ECAs-Resnet致密砂岩测井曲线岩相识别方法。以松辽盆地三肇凹陷扶余油层为例,对测井曲线数据预处理构建图像数据集,利用SMGC-ECAs-Resnet网络模型对其进行识别得到分类结果,设置对比试验和鲁棒性实验证明模型有效性。结果表明:所提出的SMGC-ECAs-Resnet网络岩相识别准确率达到91.9%,为复杂致密砂岩岩相的测井识别提供了新的方法。
