Results 31 to 40 of about 794,469 (234)

Design and Validation of a Custom-Made Laboratory Hyperspectral Imaging System for Biomedical Applications Using a Broadband LED Light Source

Sensors, 2022
Hyperspectral imaging (HSI) is a promising optical modality that is already being used in numerous applications. Further expansion of the capabilities of HSI depends on the modularity and versatility of the systems, which would, inter alia, incorporate ...
Jošt Stergar, Rok Hren, Matija Milanič
doaj   +1 more source

Numerical model for evaluating the speckle activity and characteristics of bone tissue under the biospeckle laser system

Journal of Innovative Optical Health Sciences, 2021
This paper discusses and studies the composition and characteristics of biospeckle on the surface of bone tissues. We used a laser speckle device to capture biospeckle patterns from fresh pig bone tissue. Traditional speckle activity metrics were used to
Xin Tang, Ping Zhong, Yinrui Gao, Haowei Hu   +3 more
doaj   +1 more source

Assessment of Linac photon dose delivery on Cherenkov production

Physics and Imaging in Radiation Oncology
Background and Purpose: Cherenkov imaging has emerged as a promising real-time optical dosimetry modality for treatment visualization and delivery verification.
Aubrey E. Parks, Wesley S. Culberson, Brian W. Pogue   +2 more
doaj   +1 more source

Influence Of Optical Properties and Fiber separation on Laser Doppler Flowmetry

, 2002
Microcirculatory blood flow can be measured using a laser Doppler flowmetry (LDF) probe. However, the readings are affected by tissue optical properties (absorption and scattering coefficient; µa and µs) and probe geometry. In this study the influence of
Strömberg, Tomas, Steenbergen, Wiendelt, Larsson, Marcus,, Larsson, Marcus, Stromberg, T., Strömberg, Tomas,, Steenbergen, Wiendelt,   +6 more
core   +1 more source

Visual and Physiological Optics : introduction to the joint feature issue in Biomedical Optics Express and Journal of the Optical Society of America A

, 2023
This feature issue collects articles presented at the tenth Visual and Physiological Optics meeting (VPO2022), held August 29-31, 2022, in Cambridge, UK.
Schwarz, Christina,, Vohnsen, Brian,, Lundström, Linda,, Tabernero, Juan,   +3 more
core   +1 more source

3D-printed immersion micro optics

Light: Advanced Manufacturing
Femtosecond 3D-printing offers tantalizing avenues for miniaturization and integration of micro optical systems. Available photoresists, however, restrain their utility in liquid immersion, especially in media with refractive indices larger than n = 1.33,
Marco Wende, Kathrin Doth, Michael Heymann, Andrea Toulouse   +3 more
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo, Weisi Dai, Jie Mao, Mei Ye, Xingshan Lu, Xiaocui Zhang   +5 more
wiley   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Performance Evaluation of a 4 × 20-Gbps OFDM-Based FSO Link Incorporating Hybrid W-MDM Techniques

Frontiers in Physics, 2021
Free space optics (FSO) has been recognized as a crucial technique to meet the high-bandwidth requirements in future wireless information transmission links.
Mehtab Singh, Mehtab Singh, Saleh Chebaane, Saleh Chebaane, Sana Ben Khalifa, Sana Ben Khalifa, Amit Grover, Sanjeev Dewra, Mohit Angurala   +8 more
doaj   +1 more source

Epigenetic silencing of the liver‐specific lncRNA LUNAR promotes liver cancer progression via NOTCH activation

Molecular Oncology, EarlyView.
LUNAR is a liver‐specific long noncoding RNA (lncRNA) that is highly expressed in normal liver but becomes epigenetically silenced in hepatocellular carcinoma through promoter hypermethylation. Loss of LUNAR is associated with NOTCH activation, epithelial–mesenchymal transition, and metastasis, whereas restoring LUNAR restrains metastatic progression ...
Se Ha Jang, Hyung Seok Kim, Geum Ok Baek, Moon Gyeong Yoon, Su In Lee, Jee‐Yeong Jeong, Ji Eun Han, Soon Sun Kim, Jae Youn Cheong, Jung Woo Eun   +9 more
wiley   +1 more source