Results 121 to 130 of about 787,641 (342)

Generation of Flat Optical Frequency Comb Using Cascaded Electro-Optic Modulators

Photonics
Optical frequency combs have been widely used in spectrum analysis, coherent optical communication, and accurate distance measurement. We propose a straightforward method to improve the flatness of optical frequency combs. First, we derived the output of
Wei Lin, Bowen Zhu, Keqi Cao, Hang Yu, Xinyan Zhang, Jia Chen, Yu Liu   +6 more
doaj   +1 more source

Study on Amplitude and Flatness Characteristics of Elastic Thin Strip under Fluid–Structure Interaction Vibration Excited by Unsteady Airflow

Metals, 2019
Based on unsteady airflow excitation and elastic thin strip vibration theory, a SI-FLAT flatness meter was taken as the research object, and an amplitude−residual stress simulation analysis model of the cold rolling strip under aerodynamic loads ...
Hongbo Li, Guomin Han, Jingbo Yang, Nong Li, Jie Zhang   +4 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Influence of the probing definition on the flatness measurement

International Journal of Metrology and Quality Engineering, 2018
The quality control of mechanical parts is generally performed on a coordinate measuring machine (CMM). The choice of the number of points to be sampled, their distributions and their positions on the surface, as well as the association criterion remains
Moulai-khatir Djezouli, Pairel Eric, Favreliere Hugues   +2 more
doaj   +1 more source

Flatness Criteria

Journal of Algebra, 1995
Let \(f : (X,x) \to (Y,y)\) be a morphism of local schemes and \((Z,x)\) the central fiber. The flatness of \(f\) is a subtle geometric notion and it is difficult to find some flatness criteria which do not require infinitesimal properties. A well-known result of \textit{H. Hironaka} [Ill. J. Math.
openaire   +2 more sources

RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells

FEBS Open Bio, EarlyView.
RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour, Christine Volmert, Valentina Piano   +2 more
wiley   +1 more source

Reliable nonlinear control for quadcopter trajectory tracking through differential flatness

, 2017
This paper addresses the trajectory tracking problem for a quadcopter system under nominal and fault-affected scenarios (in the latter case, due to stuck actuator(s)). Differential flatness is employed for trajectory generation and control design.
Ngoc Thinh Nguyen, I. Prodan, F. Stoican, L. Lefévre   +3 more
semanticscholar   +1 more source

Magnetic Levitation Ｒail Locomotive Vibration on-line Monitoring

Journal of Harbin University of Science and Technology, 2018
In order to achieve underground metro flatness measurement，a maglev subway vibration tester was designed． The sensitivity of the photoelectric displacement sensor was calculated． Oscillator kinetic equation was derived． The equation derived is linear ...
JIANG Dong, ZHAO Yan-chao, KONG De-shan, LIU Xu-kun   +3 more
doaj   +1 more source

Lipopolysaccharide uptake is augmented in lipopolysaccharide‐tolerant mouse macrophage‐like cells via increased CD14 expression

FEBS Open Bio, EarlyView.
In normal (nontolerant) cells, CD14 is crucial for both LPS uptake and LPS signaling. In LPS‐tolerant cells, in which LPS‐induced TNF‐α and IFN‐β production is suppressed, there is a dramatic increase in surface CD14 expression. The overexpressed CD14 in LPS‐tolerant cells is responsible for the enhanced LPS uptake without inducing pro‐inflammatory ...
Saeka Nishihara, Takayuki Manabe, Mika Jouta, Kiyoshi Kawasaki   +3 more
wiley   +1 more source

Hyperactive ice‐binding proteins stabilize cell membranes and improve resistance to dehydration stress in Caenorhabditis elegans

FEBS Open Bio, EarlyView.
TisIBP8, a fungal‐derived hyperactive ice‐binding protein, helps Caenorhabditis elegans survive dehydration. It localizes near cell membranes, reduces cell damage, and helps maintain membrane structure during drying. These results suggest that ice‐binding proteins can protect cells from dehydration stress as well as freezing stress.
Daiki Shimose, Kotaro Ozaki, Ryohei Kuriyama, Yuka Ikemoto, Kazuhiro Mio, Yuji C. Sasaki, Tatsuya Arai, Sakae Tsuda, Yoichi Shinkai, Masahiro Kuramochi   +9 more
wiley   +1 more source