Results 91 to 100 of about 719,139 (306)

Sphingolipids as emerging mediators in retina degeneration [PDF]

, 2019
The sphingolipids ceramide (Cer), sphingosine-1-phosphate (S1P), sphingosine (Sph), and ceramide-1-phosphate (C1P) are key signaling molecules that regulate major cellular functions.
Prado Spalm, Facundo Heber, Rotstein, Nora Patricia, Simon, Maria Victoria, Vera, Marcela Sonia   +3 more
core   +1 more source

Bio‐Inspired Multimodal Hardware Front‐End Enabled by 2D Floating‐Gate Memory for UAV Perception

Advanced Functional Materials, EarlyView.
A MoS2/h‐BN /graphene floating‐gate memory underpins a bio‐inspired multimodal front end that integrates visual, inertial, and airflow cues. A 4 × 4 FG memory array encodes temporal intensity differences, while IMU‐ and airflow‐driven threshold modulation suppresses self‐motion artifacts, enabling fast, low‐power, robust autonomous UAV tracking and ...
Lianghao Guo, Yue Cheng, Cong Li, Xiaoyu Guo, Jiankai Yin, Dadong Fan, Zhenyu Xu, Chenyu Tang, Arokia Nathan, Shuo Gao, Li Tao, Luigi G. Occhipinti   +11 more
wiley   +1 more source

The PRIS-Tool. A simple screening device for eye care

Current Directions in Biomedical Engineering
With the PRIS-Tool we aim to enable a fast, simple and stable eye self-screening that makes pathological changes in the retinal blood vessels visible to the patient.
Tautorat Carsten, Grabow Niels, Schmidt Wolfram, Guthoff Rudolf, Stahnke Thomas, Lips Thomas, Senz Volkmar, Lebahn Kerstin   +7 more
doaj   +1 more source

Reversible Photochromic Reactions of Bacteriorhodopsin from Halobacterium salinarum at Femto- and Picosecond Times

Molecules
The operation of bacteriorhodopsin (BR) from the archaeon Halobacterium salinarum is based on the photochromic reaction of isomerization of the chromophore group (the retinal protonated Schiff base, RPSB) from the all-trans to the 13-cis form.
Olga Smitienko, Tatyana Feldman, Ivan Shelaev, Fedor Gostev, Arseniy Aybush, Dmitry Cherepanov, Victor Nadtochenko, Mikhail Ostrovsky   +7 more
doaj   +1 more source

Vascular changes in diabetic retinopathy-a longitudinal study in the Nile rat. [PDF]

, 2019
Diabetic retinopathy is the most common microvascular complication of diabetes and is a major cause of blindness, but an understanding of the pathogenesis of the disease has been hampered by a lack of accurate animal models. Here, we explore the dynamics
Blodi, Barbara A, Bozadjian, Rachel V, Clegg, Dennis O, Coffey, Peter J, Keeley, Patrick W, Lockwood, Madison D, Reese, Benjamin E, Sadjadi, Ryan, Smolentsev, Alexander, Thomson, James A, Toh, Huishi   +10 more
core  

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

Advanced Functional Materials, EarlyView.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu, Taoyu Zou, Cheng‐Yan Xu, Liang Zhen, Yang Li, Yong‐Young Noh   +5 more
wiley   +1 more source

Differential Expression of the Demosponge (Suberites domuncula) Carotenoid Oxygenases in Response to Light: Protection Mechanism Against the Self-Produced Toxic Protein (Suberitine)

Marine Drugs, 2012
The demosponge Suberites domuncula has been described to contain high levels of a proteinaceous toxin, Suberitine, that displays haemolytic activityIn the present study this 7–8 kDa polypeptide has been isolated and was shown to exhibit also cytotoxic ...
Heinz C. Schröder, Matthias Wiens, Werner E. G. Müller, Xiaohong Wang, Michael Binder, Johannes von Lintig   +5 more
doaj   +1 more source

Unlocking Photodetection Mode Switching from a Simple Lateral Design

Advanced Functional Materials, EarlyView.
A simple lateral 2D perovskite photodetector capable of switching among transient, continuous, and dual transient/continuous photoresponse modes is achieved by integrating photoconductive effects with capacitive coupling from the SiO2/Si substrate. Such light‐programmable photodetection mode switching enables triple‐channel information transmission and
Zijun (June) Yong, Keng‐Te Lin, Joel van Embden, Taimur Ahmed, Yumeng Du, Dashen Dong, Yiwen Mai, Junlin Lu, Sumeet Walia, Baohua Jia, Tianyi Ma   +10 more
wiley   +1 more source

Severe hypertension and pulmonary edema associated with systemic absorption of topical phenylephrine in a child during retinal surgery

Saudi Journal of Anaesthesia, 2012
Topical phenylephrine solutions are widely used in eye procedures to promote pupil dilation without cycloplegia. We report a case of intraoperative severe hypertension and acute pulmonary edema occurring in a child during retinal surgery after possible ...
Ashraf A Abdelhalim, Mohamed Mostafa, Ahmed Abdulmomen, Essam A Othman   +3 more
doaj   +1 more source

Free Radical Mediated Oxidative Degradation of Carotenes and Xanthophylls

Molecules, 2020
This article reviews the excited-state quenching, pro-vitamin A activity and anticarcinogenicity of carotenes and xanthophylls in relation to their chemical structures.
Raphael C. Mordi, Olabisi T. Ademosun, Christiana O. Ajanaku, Ifedolapo O. Olanrewaju, John C. Walton   +4 more
doaj   +1 more source