Publications by authors named "W Hyder"
Atrial fibrillation (AF) is the most common chronic arrhythmia presenting a heavy disease burden. We report a new approach for generating cardiomyocytes (CMs) resembling atrial cells from human-induced pluripotent stem cells (hiPSCs) using a combination of Gremlin 2 and retinoic acid treatment. More than 40% of myocytes showed rod-shaped morphology, expression of CM proteins (including ryanodine receptor 2, -actinin-2 and F-actin) and striated appearance, all of which were broadly similar to the characteristics of adult atrial myocytes (AMs).
View Article and Find Full Text PDFThe use of underwater sensor networks (UWSNs) offers great advantages in many automatic observation services such as water monitoring (ocean, sea, etc.) and registering of geological events (landslides, earthquakes). However, UWSNs have many more limitations than terrestrial sensor networks (smaller bandwidth, higher delays, etc.
View Article and Find Full Text PDFUnderwater Wireless Sensor Networks (UWSNs) are subjected to a multitude of real-life challenges. Maintaining adequate power consumption is one of the critical ones, for obvious reasons. This includes proper energy consumption due to nodes close to and far from the sink node (gateway), which affect the overall energy efficiency of the system.
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- Electromagnetic (EM) waves are ineffective for underwater communication due to high absorption rates in sea water, while acoustic waves, though slower, are more suitable for this purpose.
- Underwater wireless sensor networks (UWSNs) face challenges such as node positioning and time synchronization since GNSS cannot be used in underwater settings, complicating the implementation of regular wireless sensor network protocols.
- The SPRINT protocol has been developed to optimize both data throughput and energy efficiency in UWSNs, balancing the trade-off between minimizing hops for better throughput and selecting the nearest forwarding nodes to reduce energy consumption.
Underwater Acoustic Sensor Networks (UASN) have two important limitations: a very aggressive (marine) environment, and the use of acoustic signals. This means that the techniques for terrestrial wireless sensor networks (WSN) are not applicable. This paper proposes a routing protocol called "Self-Organizing and Scalable Routing Protocol" (SOSRP) which is decentralized and based on tables residing in each node.
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