Results 31 to 40 of about 33,564 (307)

Ground-to-Drone Optical Pulse Position Modulation Demonstration as a Testbed for Lunar Communications

Drones, 2023
Free-space optical (FSO) communication promises to bring fibre-like speeds to data transmissions between ground, sky and space. This is becoming more important in light of the increasing volume of data collected by aircraft and spacecraft. The University
Skevos F. E. Karpathakis, Benjamin P. Dix-Matthews, Shane M. Walsh, Ayden S. McCann, David R. Gozzard, Alex M. Frost, Charles T. Gravestock, Sascha W. Schediwy   +7 more
doaj   +1 more source

Hybrid SPAD/PD Receiver for Reliable Free-Space Optical Communication

IEEE Open Journal of the Communications Society, 2020
Free-space optical (FSO) communication provides wireless optical connectivity with high data rates and low-cost implementation; however, its performance is strongly influenced by the power attenuation due to the infrequent adverse weather conditions ...
Shenjie Huang, Majid Safari
doaj   +1 more source

An optically powered, free space optical communications receiver

2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008
Two of the key components of sensor motes are a power source and a communications receiver. One approach to creating very small motes is to use free space optical communication and to scavenge power from the optical downlink. In this paper photodiodes are described that were made on a standard CMOS process and generate electrical power from the ...
Liu, J, Faulkner, G, Collins, S, O'Brien, D, Elston, S   +4 more
openaire   +2 more sources

Determining Parental Factors for Clinical Trial Attrition in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Despite high enrollment rates on Children's Oncology Group (COG) protocols, attrition after initial consent is challenging, introducing bias and prolonging trial completion. While adult oncology literature has identified predictors of withdrawal, little is known about caregiver decision‐making for child participation in ...
Kimberly L. Stathas, Jakob Q. Weiss, Kellee N. Parker, Cathy Lee‐Miller   +3 more
wiley   +1 more source

Optical Wireless Communications: Illuminating the Path for Cooper’s Law

IEEE Open Journal of the Communications Society
The increasing proliferation of internet-connected devices, together with the widespread reliance on wireless communication in daily activities, are limiting the capabilities of the radio frequency (RF) spectrum to meet data traffic demands.
Mahmoud Wafik Eltokhey, Muhammad Salman Bashir, Othman Isam Younus, Zabih Ghassemlooy, Harald Haas, George K. Karagiannidis, Shivani Rajendra Teli, Stanislav Zvanovec, Mohammad-Ali Khalighi, Zhenyu Charlus Zhang, Steve Hranilovic, Maite Brandt-Pearce, Jean-Paul Linnartz, Abderrahmen Trichili, Hyunchae Chun, Dominic O'Brien, Murat Uysal, Jian Song, Murat Yuksel, Hany Elgala, Zhengyuan Xu, Nan Chi, Takaya Yamazato, Chi-Wai Chow, Boon S. Ooi, Mohamed-Slim Alouini   +25 more
doaj   +1 more source

Adaptive symbol-rate free-space-optical communications [PDF]

2013 Australian Communications Theory Workshop (AusCTW), 2013
Free space optical communications through fading atmospheric channels can achieve improved throughput by using adaptive transmission techniques. This paper considers the use of adaptive symbol-rate and transmit-power methods. We use an idealised model of channel coding that assumes zero errors can be achieved above some SNR threshold and adjust the ...
William G. Cowley, Khoa D. Nguyen, Dirk Giggenbach   +2 more
openaire   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

The Orbital Angular Momentum Encoding System With Radial Indices of Laguerre–Gaussian Beam

IEEE Photonics Journal, 2018
Orbital angular momentum (OAM) in optical vortices (OV) beams offers a new dimension of space mode because coaxially propagating OV beams with different azimuthal OAM states are mutually orthogonal.
Zhongyi Guo, Zikun Wang, Maxime Irene Dedo, Kai Guo   +3 more
doaj   +1 more source

Spatial biology in cancer epigenetics

Molecular Oncology, EarlyView.
Spatial epigenomics combines molecular profiling with tissue architecture to reveal how gene regulation is organized within intact tissues. In cancer, these technologies uncover the mechanisms driving tumor heterogeneity and microenvironmental interactions, opening new opportunities for biomarker discovery and precision medicine.
Eva Crespo‐García, Manel Esteller
wiley   +1 more source