Results 71 to 80 of about 207,397 (112)

藻结皮、地衣结皮光合特性对比研究

, 2010
本文以蓝藻结皮、蓝藻地衣结皮、绿藻地衣结皮为材料,以叶绿素荧光为手段,研究其光合日进程的变化规律。结果发现,一天中三种类型结皮的光合活性均呈现一个先下降再升高的变化趋势。当结皮处于在高光强时,其光合活性降低,但高光强并不对光合系统造成损害,当光强降低时,结皮光合活性均能恢复到较高值。一天中绿藻地衣结皮的光合活性始终高于另两种结皮,且绿藻地衣结皮没有出现"午休"现象;蓝藻地衣结皮的光合活性低于蓝藻结皮,而二者的Etr值无显著性差异,两种结皮同时出现了"午休"现象 ...
吴丽, 胡春香, 张德禄, 兰书斌
core  

[Research on computer aided diagnosis of otitis media based on faster region convolutional neural network]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2021
Lu S, Liu H, Yang J, Liu S, Zhou L, Huang X.   +5 more
europepmc   +1 more source

[Periodontitis and Metabolic Dysfunction-Associated Fatty Liver Disease: From Oral Dysbiosis to Hepatic Metabolic Dysregulation]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Wang M, Chen R, Ke X, Gu Y, Zhang Y, Yan F.   +5 more
europepmc   +1 more source

[Research Advances on Natural Products in Maintaining Oral Microecological Balance]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Liu Y, Ma Q, Meng M, Wu Y, Zou J.
europepmc   +1 more source

[Serum LAPTM4B-35 protein as a novel diagnostic marker for hepatocellular carcinoma]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban, 2021
Pang Y, Zhang S, Yang H, Zhou RL.
europepmc   +1 more source

[Research Progress on Microbiome-Driven Mechanisms and Intervention Strategies for Oral Malodor]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Shang X, Wang Z, Ge S.
europepmc   +1 more source

[Correlation analysis of peri-implant health after single-tooth dental implant]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Lin F, Tang Z.
europepmc   +1 more source

A case of precise prosthesis under the direction of target restoration space analysis after multidisciplinary combination therapy. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi, 2022
Yang L, Qin H, Zhang J, Han X.
europepmc   +1 more source

一种基于光子晶体空气桥结构的慢光波导结构

本发明公开了一种基于光子晶体空气桥结构的慢光波导结构，该慢光波导结构采用线缺陷光子晶体结构，包括纵向结构及横向结构，纵向结构为空气桥多层结构，从顶层到底层依次为空气层/半导体材料层/空气层/衬底材料层，横向结构采用三角晶格结构，周期为P，半径为R，通过去掉一行孔形成波导。本发明通过变化线缺陷临近孔的大小，实现高达50纳米的慢光工作区，中心波长可以通过波导宽度来调节，在上百纳米的工作波长要求范围内只需要两种孔径的小孔就可实现，可降低满足某一工艺条件的器件参数调整要求 ...
渠红伟, 张冶金, 郑婉华, 陈良惠   +3 more
core  

[Applications of native mass spectrometry and ultraviolet photodissociation in protein structure and interaction analysis]. [PDF]

Se Pu
Xue JY, Liu ZY, Wang FJ.
europepmc   +1 more source