Bull Empire is a Solana-based collection composed of 2,500 pixelized bulls, each possessing unique traits and different levels of rarity.  It seems that Asian folklore is making a big splash this year and making itself known to the world through non-fungible token (NFT) collections. With impressive artworks, passionate teams, and exciting roadmaps, Asian-themed NFTs are starting […]

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Riyadh, Saudi Arabia, Jan 20, 2022 - (JCN Newswire) - Hitachi Rail announced today that it has signed a 72.5 million EUR contract with Princess Noura Bint Abdul Rahman University to operate and maintain the autonomous metro system in Riyadh, Saudi Arabia for the next three years.
The Princess Nourah Bint Abdul Rahman University is the largest women university in the world able to host 60,000 students that can travel within the huge campus area with the autonomous train. The electric powered trains provide a sustainable low carbon alternative to travelling by car.

The rail network consists of four elevated lines spanning 11.5 km that connects 14 stations. The 22 two-carriage automated metro trains have a capacity of 110 passengers and can travel to a maximum speed of 60 km/h.

The contract will see Hitachi operate the whole autonomous metro system, while maintaining the trains and infrastructure, including stations, mechanical and electrical systems and the depot and viaduct. Hitachi Rail completed the building of the autonomous railway in May 2011.

Hitachi is the largest autonomous manufacturer in the world with 30% market share. The company first autonomous metro started running in Copenhagen in 2002, and was followed by Line 5 in Milan, Brescia, Line C in Rome and successful system in Riyadh, Saudi Arabia and Taipei, Taiwan. Other projects are in progress in Honolulu - Hawaii, Thessaloniki - Greece, and Australia.

Edoardo La Ficara, Executive Officer, Operation Service & Maintenance Division, Hitachi Rail said, "We are proud to be confirmed as operator and maintainer of the Princess Noura University automated metro. This award is an important further milestone that consolidates our presence in the Middle East, one of the Operation, Service and Maintenance Division target markets. We're happy to be able to contribute with our customers to the development of mobility in the countries in which we operate, in terms of growth and sustainable systems".

Hitachi Rail has operated and maintained the Princess Noura Bint Abdul Rahman University since March 2018. Building up on the recent announcement on the maintenance of the new Spanish very high speed fleet, this new award is proof of Hitachi's continuous and positive collaboration with its customers enabling to operate and maintain the system in Riyadh for the next three years, powering sustainable connectivity.

About Hitachi Rail

Hitachi Rail is a fully integrated, global provider of rail solutions across rolling stock, signalling, service & maintenance, digital technology and turnkey solutions. With a presence in 38 countries across six continents and over 12,000 employees, our mission is to contribute to society through the continuous development of superior rail transport solutions. We are proud of our global achievements, from our world -famous 'bullet trains', to our signalling solutions and turnkey projects, state--of-the-art traffic management and digital solutions. Drawing on the wider Hitachi Group's market-leading technology and research-and-development capabilities, we strive for industry leading innovations and solutions that can deliver value for customers and sustainable railway systems that benefit wider society. For information about Hitachi Rail, visit www.hitachirail.com.


Copyright 2022 JCN Newswire. All rights reserved. www.jcnnewswire.comHitachi Rail announced today that it has signed a 72.5 million EUR contract with Princess Noura Bint Abdul Rahman University to operate and maintain the autonomous metro system in Riyadh, Saudi Arabia for the next three years.

TSUKUBA, Japan, Jan 18, 2022 - (ACN Newswire) - Tiny dressings that generate electricity in response to movement could accelerate wound healing and tissue regeneration. Scientists in Taiwan reviewed the latest advances and potential applications of wound healing technology in the journal Science and Technology of Advanced Materials.
The natural wound healing process involves complex interactions between ions, cells, blood vessels, genes and the immune system; with every player triggered by a sequence of molecular events. An integral part of this process involves the generation of a weak electric field by the damaged epithelium - the layer of cells covering tissue. The electric field forms as a result of an ion gradient in the wound bed, which plays an important role in directing cell migration and promoting blood vessel formation in the area.

Scientists discovered in the mid- to late-1900s that stimulating tissue with an electric field could improve wound healing. Current research in this field is now focused on developing small, wearable, and inexpensive patches that aren't encumbered by external electrical equipment.

This has led to research on piezoelectric materials, including natural materials like crystals, silk, wood, bone, hair and rubber, and synthetic materials such as quartz analogs, ceramics and polymers. These materials generate an electric current when exposed to mechanical stress. Nanogenerators developed using the synthetic materials are especially promising.

For example, some research teams are exploring the use of self-powered piezoelectric nanogenerators made with zinc oxide nanorods on a polydimethylsiloxane matrix for accelerating wound healing. Zinc oxide has the advantage of being piezoelectric and biocompatible. Other scientists are using scaffolds made from polyurethane and polyvinylidene fluoride (PVDF) due to their high piezoelectricity, chemical stability, ease of manufacturing and biocompatibility. These and other piezoelectric nanogenerators have shown promising results in laboratory and animal studies.

Another type of device, called a triboelectric nanogenerator (TENG), produces an electric current when two interfacing materials come into and out of contact with each other. Scientists have experimented with TENGs that generate electricity from breathing movements, for example, to accelerate wound healing in rats. They have also loaded TENG patches with antibiotics to facilitate wound healing by also treating localized infection.

"Piezoelectric and triboelectric nanogenerators are excellent candidates for self-assisted wound healing due to their light weight, flexibility, elasticity and biocompatibility," says bioengineer Zong-Hong Lin of the National Tsing Hua University in Taiwan. "But there are still several bottlenecks to their clinical application."

For example, they still need to be customized so they are fit-for-size, as wound dimensions vary widely. They also need to be firmly attached without being negatively affected or corroded by the fluids that naturally exude from wounds.

"Our future aim is to develop cost-effective and highly efficient wound dressing systems for practical clinical applications," says Lin.

Further information
Zong-Hong Lin
National Tsing Hua University
Email: linzh@mx.nthu.edu.tw

Research paper: https://www.tandfonline.com/doi/full/10.1080/14686996.2021.2015249

About Science and Technology of Advanced Materials (STAM)

Open access journal STAM publishes outstanding research articles across all aspects of materials science, including functional and structural materials, theoretical analyses, and properties of materials. https://www.tandfonline.com/STAM

Dr. Yoshikazu Shinohara
STAM Publishing Director
Email: SHINOHARA.Yoshikazu@nims.go.jp

Press release distributed by Asia Research News for Science and Technology of Advanced Materials.

Copyright 2022 ACN Newswire. All rights reserved. www.acnnewswire.comTiny dressings that generate electricity in response to movement could accelerate wound healing and tissue regeneration. Scientists in Taiwan reviewed the latest advances and potential applications of wound healing technology in the journal Science and Technology of Advanced Materials.

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