Results 11 to 20 of about 4,952 (157)

Programmed Cell Death Ligand 1 in Breast Cancer: Technical Aspects, Prognostic Implications, and Predictive Value

open access: yesThe Oncologist, Volume 24, Issue 11, Page e1055-e1069, November 2019., 2019
Abstract In the light of recent advances in the immunotherapy field for breast cancer (BC) treatment, especially in the triple‐negative subtype, the identification of reliable biomarkers capable of improving patient selection is paramount, because only a portion of patients seem to derive benefit from this appealing treatment strategy. In this context,
Federica Miglietta   +3 more
wiley   +1 more source

含导通性缺陷复合绝缘子电气特性仿真及试验分析

open access: yesDianci bileiqi, 2022
为了有效检测交流输电线路复合绝缘子的导通性缺陷情况,提出了一种基于电场检测原理的复合绝缘子导通性缺陷状态检测方法,为输电线路复合绝缘子的状态评估及安全检修提供支撑。首先采用有限元仿真计算正常和含有导通性缺陷情况下的绝缘子空间电场分布并归纳其特征,分析导通性缺陷长度及位置对绝缘子电场分布和强度的影响;然后采用电场传感器进行导通性缺陷绝缘子的电场测量,获取不同缺陷条件下复合绝缘子电场分布曲线,实现了复合绝缘子导通性缺陷的检测。仿真分析及试验结果表明,该方法可有效检测出存在导通性缺陷的复合绝缘子。
秦威南, 方玉群, 张博, 雷兴列
doaj  

International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder – Chinese (Mandarin) translation

open access: yesDevelopmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019
目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua   +6 more
wiley   +1 more source

A machanical vision designing of PZT wafer defect inspection system [PDF]

open access: yes, 2015
压电晶体PZT产品常有裂纹、油污、破损及涂胶不均等表面缺陷,且缺陷尺寸、形状不确定,因而导致人工分检难度大,分检合格率低。为此本文提出了用机器视觉检测PZT产品的表面缺陷,研究在产品图像准确获取的基础上,通过图像增强、图像分割和缺陷特征提取的算法实施,由软件程序确定PZT产品的表面缺陷。本文主要研究内容如下: ①采用空间域和频域方法增强待测PZT图像特征,并用微分算子法和阈值分割进行PZT图像边缘分割,从而完成了工件图像在背景中的分离,降低处理的复杂性,提高处理速度。 ②采用区域连通的轮廓识别方法 ...
邹建男
core  

Dual‐Rare‐Earth‐Doped Piezoelectric Semiconductor Gallate Solids With Spectral Tuning for Energy Conversion and Photonic Applications

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Mechanoluminescent materials have gained significant attention for their unique capability to convert mechanical stimuli into light without external optical or electrical excitation, holding immense promise for applications in safety monitoring, biomedicine, optical anti‐counterfeiting, and intelligent sensing.
Fanlei Qin   +8 more
wiley   +1 more source

Numerical Simulation And Experiment Study On Magnetoacoustic Emission with Magnetic Induction [PDF]

open access: yes, 2015
铝合金板材具有高强度、低密度、强耐腐蚀、高断裂韧性和良好的高低温特性等优点,是制造宇宙飞船、运载火箭、飞机、舰船、坦克、装甲车和高速列车的主要材料。然而,由于加工工艺限制,铝合金板材在生产过程中不可避免地存在分层、夹杂、裂纹和氧化膜等缺陷。无损检测技术是一种在不破坏待测物材质与性能前提下实现构件质量检测的技术,目前已在许多领域成为确保产品质量和可靠性的强制性措施。 本文研究的感应式磁声发射无损检测方法是利用线圈在导体感应出的涡流在静态磁场的作用下会受到洛仑兹力的作用使导体发生机械振动,进而产生磁声信号 ...
李超
core  

Skin barrier, phenotypic and genotypic characterisation of autosomal recessive ichthyosis in TGM1‐deficient Jack Russell Terriers and response to topical ceramide

open access: yesVeterinary Dermatology, Volume 35, Issue 6, Page 617-625, December 2024.
Background – Autosomal recessive ichthyosis leads to structural or biochemical changes that impair skin barrier function. Hypothesis/Objectives – To assess (1) the phenotype and genotype in a litter of Jack Russell Terriers with autosomal recessive congenital ichthyosis (ARCI), and (2) the defective skin barrier and determine if a topical ceramide can ...
Elizabeth Mauldin   +7 more
wiley   +1 more source

Walnut defect detection based on improved ELM and computer vision [PDF]

open access: yes
Objective: To address the issues of low accuracy and poor efficiency in walnut defect detection among existing food production enterprises. Methods: Proposed a fast non-destructive detection method for walnut defects that combined improved extreme ...
LIU Chang, XU Jie
core   +1 more source

Defects Identification for Carbonization Bamboos Based on GLCM and SVM [PDF]

open access: yes, 2017
针对碳化竹条瑕疵种类多,位置不确定且竹纹理干扰的问题,利用图像处理技术对竹条图像进行阈值分割,图像滤波等预处理,得到特征明显的图像,从而实现其表面瑕疵特征的识别。通过计算确定灰度共生矩阵的三个构造因子,提取了图像的三个纹理特征,采用一对一淘汰策略的多类SVM(support vector machine)学习模型进行分类识别竹条的瑕疵类型。实验结果表明,该方法对于碳化竹条的黑结、虫蛀、染色、霉点、裂痕等缺陷的正确识别率达到90.6%以上。In observation of realization of ...
李叶妮   +3 more
core   +1 more source

基于区域神经网络的TFT-LCD电路缺陷检测方法 [PDF]

open access: yes, 2018
对薄膜晶体管液晶显示器(TFT-LCD)边框电路中细微、复杂的缺陷进行检测,一直是自动光学检测(AOI)的一个难点。本文提出基于改进的快速区域神经网络(Faster R-CNN)算法对TFT-LCD边框电路的缺陷进行检测。首先在共享卷积层进行特征提取,然后通过多层的区域提议网络结构生成精确候选区域,根据候选区域的特征和目标分类实现对缺陷的识别和定位。同时设计多种有效的网络结构并详细分析网络层深度及卷积核大小对检测效果的影响,最后进行不同算法的比较。在实际构建的数据集上实验 ...
何俊杰, 刘畅, 肖可, 陈松岩
core  

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