检索结果-南通市图书馆

PERFORMING A 2-DIMENSIONAL LINEAR TRANSFORM WITH A HOLOGRAPHIC MASK

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

Chinese Physics Letters 1990年第10期7卷 437-440页

作者： chen yansong ZHENG Shihai LI Dehua YANG Guozhen Institute of Physics Academia SinicaBeijing 100080

Based on the configuration of coherent optical system composed of a holographic mask and two Fourier transform lenses,an approach of performing a 2-dimensional(2-D)linear transform is *** 2-D Walsh-Hadamard transform ... 详细信息

关键词： holographic Hadamard Walsh

In Situ Observation of KB_(5) Crystal Growth Under Purely Diffusion Gel Systems by Holographic Interferometry

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

Chinese Physics Letters 1991年第9期8卷 469-471页

作者： chen Wanchun SHEN Yunxue MA Wenyi LI Ming chen yansong Institute of Physics Academia SinicaBeijing 100080

KB_(5)O_(8).4H_(2)O(KB_(5))crystals have been grown in an agar-agar gel by temperature decrease method for simulating crystal growth in *** and growth have been followed by interferometric holography.A concentration field surrounding the growing crystals was obtained and a Liesegang ring was *** pattern are visualized directly to reveal physical phenomena of purely diffusion crystal growth kinetics.

关键词： Diffusion purely

Fabrication of Excitation-Independent Green Emissive Graphene Quantum Dots for Selective Detection of Hg^(2+) and Fluorescence Imaging of Biothiols in Living Cells

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

Journal of Donghua University(English Edition) 2018年第5期35卷 373-379页

作者： MA Qifeng WANG Lei chen yansong LUO Xiaosong ZHU Zhijia ZHANG Xuan College of Chemistry Chemical Engineering & BiotechnologyDonghua University

Nitrogen-doped graphene quantum dots( N-GQDs)exhibiting excitation-independent green fluorescence emission( 536 nm) was facilely synthesized. The as-prepared N-GQDs showed a highly selective fluorescence quenching response toward Hg2 + with a linear range of 0. 1-30. 0 μmol/L and detection limit of50 nmol/L. Based on the high affinity of biothiols( such as cysteine)toward Hg2 +, the quenched fluorescence of N-GQDs could be recovered upon addition of biothiols,and thereby a new fluorescence turn-on probe for cysteine detection was further developed. The linear range and detection limit for cysteine were found to be 0. 1-12. 5 μmol/L and 46 nmol/L,respectively. The present fluorescent probe worked well in a physiological pure water medium,allowing a fluorescence imaging of cysteine in living cells.

关键词： fluorescent probe graphene quantum dots(GQDs) mercury ion cysteine bioimaging

Correlation of pretreatment serum tissue polypeptide specific antigen (TPS) with prognosis in primary breast cancer

在线全文

学校读者我要写书评

暂无评论

The Chinese-German Journal of Clinical Oncology 2012年第11期11卷 655-659页

作者： Yuhong Zheng Yan chen Minhua Hu Yingying Lin yansong chen Clinical Laboratory Department Laboratory of Biochemistry and Molecular Biology ResearchFujian ProvincialCancer Hospital of Fujian Medical University Teaching HospitalFujian 350014China

Objective: The aim of this study was to explore the correlation of pretreatment serum tissue polypeptide specific antigen (TPS) with prognosis in primary breast cancer. Methods: A total of 361 patients with grades I-III breast cancer had been followed up from January 2001 to February 2011. Serumal TPS level was measured by enzyme-linked immunosorbent assays (ELISA). Univariate and multivariate analyses were used to investigate associations between pretreatment TPS level and clinicopathological parameters and patient outcomes. Results: First, at the univariate analysis, the expression of TPS was related with some clinicopathological traditional prognostic factors such as tumor size (P = 0.030), histologic grade (P = 0.001) and lymph node status (P = 0.008). Second, overall survival were significantly shorter among patients with elevated pretreatment serum TPS (P = 0.038). However, finally, multivariate Cox regression indicated that the level of pretreatment serum TPS was not an independent prognostic parameter for overall survival in primarily breast cancer patients (P > 0.05). Conclusion: The expression of pretreatment serum TPS is closely correlated with clinicopathology parameters and overall survival of patients with primarily breast cancer, but its level has no independent prognostic value.

关键词： breast neoplasms serum tumor markers biological prognostic factor

在线全文

学校读者我要写书评

暂无评论

人工智能影像叙事的涌现化生成

当代电影 2024年第5期 14-20页

作者：陈焱松周雯北京师范大学艺术与传媒学院

伴随AIGC技术的迭代式发展,人工智能与电影的耦合关系走入以人机协作共创为特点的后电影工业美学范式。本文首先从“作为人工智能的电影”的视角切入,对电影的智能化进程进行媒介考古,从而对当前人工智能影像创作的工具化倾向进行反思... 详细信息

伴随AIGC技术的迭代式发展,人工智能与电影的耦合关系走入以人机协作共创为特点的后电影工业美学范式。本文首先从“作为人工智能的电影”的视角切入,对电影的智能化进程进行媒介考古,从而对当前人工智能影像创作的工具化倾向进行反思。随后基于技术的复杂涌现属性,提出人工智能影像叙事从“数据库”到“涌现集”的逻辑转向,并从空间涌现、人物涌现、剧情涌现等角度进一步讨论构成涌现叙事的要素及其策略,进而提出从传统电影本体迈向影游融合叙述的可能性。整体而言,以“涌现”的观点来考察人工智能影像叙事,实际上是将其视为一个持续开放、进化生成、智媒共创的影像系统,对电影未来形态的发展提供了一定的认知路径及思考方式。

关键词：人工智能影像涌现叙事影游融合智能体角色神经辐射场

CFRP板纵向加固RC柱在水平低周循环荷载下的力学性能研究与应用

在线全文

学校读者我要写书评

暂无评论

湖南大学学报（自然科学版） 2024年第7期51卷 148-163页

作者：强旭红陈岩松姜旭谭成同济大学土木工程学院上海200092

开发了一种纵向粘贴CFRP(Carbon Fiber Reinforced Polymer,碳纤维增强复合材料)板的RC(Reinforced Concrete,钢筋混凝土)柱抗弯加固系统,该加固系统由纵向粘贴在柱表面的预制CFRP板和防止柱底CFRP板脱粘的混凝土加厚层组成.为研究纵向... 详细信息

开发了一种纵向粘贴CFRP(Carbon Fiber Reinforced Polymer,碳纤维增强复合材料)板的RC(Reinforced Concrete,钢筋混凝土)柱抗弯加固系统,该加固系统由纵向粘贴在柱表面的预制CFRP板和防止柱底CFRP板脱粘的混凝土加厚层组成.为研究纵向粘贴CFRP板对RC柱的抗弯性能影响,设计并开展了5根足尺矩形RC柱的水平低周循环加载试验.研究结果表明:粘贴CFRP板加固能有效延缓柱的开裂;柱的破坏模式得到明显改善;相较于未加固柱子,粘贴1层CFRP板和2层CFRP板加固的RC柱极限承载力分别提高了15.1%和17.4%;加固后柱的抗弯承载力和刚度得到提高,但增加CFRP板的层数对极限强度和刚度没有显著影响,反而会降低柱的延性,相较于仅采用增大柱底截面的方式加固的对照柱,粘贴1层CFRP板和2层CFRP板加固的试验柱的延性系数分别降低16.2%和35.1%;试验过程中,由于柱与基础节点承载力的限制,CFRP的最大应变仅达到极限应变的24%,抗拉强度未得到充分发挥.该加固方法已在某医院加固工程中得到应用,跟踪研究表明,加固后柱子的抗弯承载力有明显提升,加固方法得到工程业界的认可.

关键词：钢筋混凝土柱抗弯加固水平低周循环加载碳纤维增强复合材料板纵向粘贴

维普期刊数据库博看期刊

Clinical and Prognostic Significance of Preoperative Serum Tumor Markers in Patients with Primary Breast Cancer

在线全文

学校读者我要写书评

暂无评论

Clinical and Prognostic Significance of Preoperative Serum T...

从观看到观光:跨媒介视角下电影院的可参观性生产

中华医学会第七次全国中青年检验医学学术会议

作者：郑瑜宏陈燕胡敏华 Yingying Lin yansong chen Laboratory of Biochemistry and Molecular Biology Research Fujian Provincial Cancer Hospital of Fujian Medical University Teaching Hospital

Background Serologic tumor markers such as CA1 5-3,CEA and TPS have been used for decades to manage patients with breast *** the frequent use of these markers,the prognostic significance of these markers remains indet...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

当代电影 2021年第2期 133-138页

作者：许寒添陈焱松中国传媒大学戏剧影视学院清华大学美术学院

电影院承载着城市历史、影像文本的跨媒介属性,是媒介研究与空间研究共同实践的场所.通过引入"可参观性"的概念,本文重新反思了电影院的存在属性.其中,以银幕为媒介的影院空间,是一种普适性货品,而当影院被赋予场所性后,电影院本身成为... 详细信息

电影院承载着城市历史、影像文本的跨媒介属性,是媒介研究与空间研究共同实践的场所.通过引入"可参观性"的概念,本文重新反思了电影院的存在属性.其中,以银幕为媒介的影院空间,是一种普适性货品,而当影院被赋予场所性后,电影院本身成为一种被展览的文化,转化为具备本真性的独异品,具备可参观性.本文分析了基于电影内容再媒介化的空间与电影生产再媒介化的空间,提出了从观看到观光的电影院可参观性生产的构建过程,构建出电影美学的外部空间生态.

关键词：跨媒介可参观性电影院文化旅游

在线全文

学校读者我要写书评

暂无评论

二维光学沃尔什—哈特曼变换

光学学报 1989年第12期9卷 1078-1084页

作者：陈岩松中国科学院物理研究所

从光学变换的基本方程出发,分析了变换所需的空间横向调制型全息透镜的相位误差,提出用计算机产生全息图和光学全息相结合的方法产生高精度的二维变换全息透镜.在实验上实现了二维32序的光学沃尔什-哈特曼变换,实验结果与理论计算一致.

关键词：光学变换全息光学沃尔什哈特曼