Results 51 to 60 of about 945,790 (339)

High-speed volumetric two-photon fluorescence imaging of neurovascular dynamics

Nature Communications, 2020
Monitoring hemodynamics in the brain is important in understanding medical imaging data and mechanisms of disease. Here the authors use high-throughput two-photon microscopy with an axially-extended Bessel focus to measure vessel size and blood flow down
Jiang Lan Fan, Jose A. Rivera, Wei Sun, John Peterson, Henry Haeberle, Sam Rubin, Na Ji   +6 more
doaj   +1 more source

High-speed, 3-dimensional, telecentric imaging

Optics Express, 2006
The design, testing and operation of a system for telecentric 3-dimensional imaging of dynamic objects is presented. The simple system is capable of rapid electronic scanning of a single focal plane within a specimen or of simultaneous focusing on multiple planes whose depth and relative spacing within the specimen can be changed electronically ...
Slimane, Djidel, Justyna K, Gansel, Heather I, Campbell, Alan H, Greenaway   +3 more
openaire   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

High-speed computational imaging with path-corrected fly-scan ptychography [PDF]

EPJ Web of Conferences
Ptychography is a powerful computational imaging technique that reconstructs both the complex object function and the illumination probe from overlapping diffraction patterns.
Karpavičius Augustas, Gouder Matthias, Witte Stefan   +2 more
doaj   +1 more source

Dual-camera system for high-speed imaging in particle image velocimetry

, 2012
Particle image velocimetry is an important technique in experimental fluid mechanics, for which it has been essential to use a specialized high-speed camera. However, the high speed is at the expense of other performances of the camera, i.e., sensitivity
A. Hori, H Mouri, H. Mouri, K. Hashimoto, RJ Adrian, S. Onogi, T. Hara   +6 more
core   +1 more source

High-speed optical frequency-domain imaging

Optics Express, 2003
We demonstrate high-speed, high-sensitivity, high-resolution optical imaging based on optical frequency-domain interferometry using a rapidly-tuned wavelength-swept laser. We derive and show experimentally that frequency-domain ranging provides a superior signal-to-noise ratio compared with conventional time-domain ranging as used in optical coherence ...
Yun, S. H., Tearney, G. J., de Boer, J.M.C., Iftimia, N. V., Bouma, B. E.   +4 more
openaire   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

High speed imaging of traveling waves in a granular material during silo discharge

, 2011
We report experimental observations of sound waves in a granular material during resonant silo discharge called silo music. The grain motion was tracked by high speed imaging while the resonance of the silo was detected by accelerometers and acoustic ...
J. W. S. Rayleigh, Tamás Börzsönyi, Zsolt Kovács   +2 more
core   +1 more source

External modulation method for generating accurate linear optical FMCW [PDF]

, 2017
Frequency modulation continuous wave (FMCW) lasers are key components in modern optical imaging. However, current intracavity modulation lasers do not exhibit low-frequency jitter rate and high linearity due to the inherent relaxation oscillations ...
Ge, Chunfeng, Guo, Cheng, Jia, Dongfang, Lu, Zhaoyu, Lyu, Yingkai, Wang, Zhaoying, Yang, Tianxin, Yin, Huabing   +7 more
core   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source