Results 61 to 70 of about 7,679,023 (331)

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

Single-Source VLCP System Based on Solar Cell Array Receiver and Right-Angled Tetrahedron Trilateration VLP (RATT-VLP) Algorithm

Photonics
A significant deployment limitation for visible light communication and positioning (VLCP) systems in energy- and light-source-restricted scenarios is the reliance of photodetectors (PDs) on external power supplies, compromising sustainability and ...
Dawei Xie, Zhongxu Liu, Changyuan Yu
doaj   +1 more source

Controlling Fibronectin Fibrillogenesis Using Visible Light

Frontiers in Molecular Biosciences, 2020
We previously developed a surface-assisted assay to image early steps of cell-induced plasma fibronectin (FN) fibrillogenesis by timelapse atomic force microscopy (AFM).
Tetyana Gudzenko, Clemens M. Franz, Clemens M. Franz   +2 more
doaj   +1 more source

Implications of visible light and means of photoprotection

Journal of Photochemistry and Photobiology, 2023
Visible light (VL) has been shown to promote genotoxicity through free radical generation and structural protein degradation. These stressful events promote cellular vulnerability, which manifests clinically as erythema, hyperpigmentation, and photoaging.
Brittany Lane, Henry W. Lim, Iltefat H. Hamzavi, Tasneem F. Mohammad, Indermeet Kohli   +4 more
doaj   +1 more source

Using metallic photonic crystals as visible light sources

, 2012
In this paper we study numerically and experimentally the possibility of using metallic photonic crystals (PCs) of different geometries (log-piles, direct and inverse opals) as visible light sources. It is found that by tuning geometrical parameters of a
Belousov, Sergei, Bogdanova, Maria, Deinega, Alexei, Deng, Tao, Eiderman, Sergey, Lozovik, Yurii, Midha, Vikas, Polischuk, Ilya, Potapkin, Boris, Ramamurthi, Badri, Valuev, Ilya   +10 more
core   +1 more source

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

Hybrid 3D Localization for Visible Light Communication Systems

, 2015
In this study, we investigate hybrid utilization of angle-of-arrival (AOA) and received signal strength (RSS) information in visible light communication (VLC) systems for 3D localization.
Eroglu, Yusuf Said, Guvenc, Ismail, Pala, Nezih, Sahin, Alphan, Yuksel, Murat   +4 more
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Topical prevention from high energy visible light-induced pigmentation by 2-mercaptonicotinoyl glycine, but not by ascorbic acid antioxidant: 2 randomized controlled trials

Frontiers in Pharmacology
IntroductionHyperpigmentation and pigmentary disorders are major clinical consequences of sun exposure. While UV radiation is a known contributor, visible light (VL), particularly High Energy Visible (HEV) light (400–450 nm), also induces long-lasting ...
Virginie Piffaut, Romain De Dormael, Jean-Philippe Belaidi, Laudine Bertrand, Thierry Passeron, Thierry Passeron, Françoise Bernerd, Claire Marionnet   +7 more
doaj   +1 more source

Optimal Linear Precoding for Indoor Visible Light Communication System

, 2017
Visible light communication (VLC) is an emerging technique that uses light-emitting diodes (LED) to combine communication and illumination. It is considered as a promising scheme for indoor wireless communication that can be deployed at reduced costs ...
Alouini, Mohamed-Slim, Kammoun, Abla, Park, Ki-Hong, Sifaou, Houssem   +3 more
core   +1 more source