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Topic Review
Zirconium Carbide for Hypersonic Applications
At ultra-high temperatures, resilient, durable, stable material choices are limited. While Carbon/Carbon (C/C) composites (carbon fibers and carbon matrix phases) are the materials of choice, zirconium carbide (ZrC) provides an option in hypersonic environments and specifically in wing leading edge (WLE) applications. 
  • 335
  • 08 Oct 2023
Topic Review
Zirconium and Titanium Phosphates
Zirconium and titanium phosphates are a group of laminar tetravalent metal phosphates that have attracted intensive investigation interests. Unlike zirconium phosphates, titanium phosphates can be also synthesized in another morphology, exhibiting the form of nanorods, and thus are known as nanofibrous titanium phosphates.  The different synthetic routes of zirconium and titanium phosphates and their current and prospective applications with a special mention to the their plausible applications in the field of biotechnology are discussed. 
  • 1.0K
  • 25 Mar 2022
Topic Review
Zirconia-Based Ceramics Reinforced by Carbon Nanotubes
The use of CNTs (carbon nanotubes) as a secondary phase in a zirconia matrix is motivated by their outstanding crack self-healing ability, the possibility to tailor the desired nano-structural properties, and their exceptional wear behavior. Therefore, a detailed investigation into CNT features has been provided. The debate of using the different Vickers indentation fracture toughness equations to estimate the resistance of crack propagation was critically reviewed according to crack characteristics.
  • 273
  • 16 Aug 2023
Topic Review
Zirconia Implant-Prosthetic Components' Tissue Response
Dental components manufactured with zirconia (ZrO2) represent a significant percentage of the implant-prosthetic market in dentistry. However, during the last few years, we have observed robust clinical and pre-clinical scientific investigations on zirconia both as a prosthetic and an implantable material. Dental devices manufactured from ZrO2 are structurally and chemically stable with biocompatibility levels allowing for safe and long-term function in the oral environment.
  • 864
  • 08 Jun 2021
Topic Review
Zirconia
Zirconia is one of the indirect metal-free restorations used in dental medicine.
  • 821
  • 01 Jun 2021
Topic Review
Zipline (Drone Delivery)
Zipline is an American medical product delivery company that is headquartered in South San Francisco, California, and which designs, manufactures, and operates delivery drones. The company operates distribution centers in Rwanda, Ghana, and the US, with signed agreements to begin service in Japan , Nigeria, Cote d'Ivoire, and Kenya. As of December 2021, its drones have made over 225,000 commercial deliveries. The company's drones deliver whole blood, platelets, frozen plasma, and cryoprecipitate along with medical products including vaccines, infusions and routine medical commodities. As of September 2021, more than 75% of blood deliveries in Rwanda outside of Kigali use Zipline drones. In April 2019 in Ghana, the company began using drones to deliver vaccines, blood, and medicines. During the COVID-19 pandemic in 2020, the US Federal Aviation Administration (FAA) granted a Part 107 waiver to Zipline's partner organization Novant Health for the delivery of medical supplies and personal protective equipment (PPE) to medical facilities in North Carolina. Along with nine other drone delivery companies, the FAA selected Zipline to participate in a type certification program for delivery drones.
  • 4.3K
  • 06 Oct 2022
Topic Review
ZIP9
Zinc transporter ZIP9 also known as Zrt- and Irt-like protein 9 (ZIP9) and solute carrier family 39 member 9 (SLC39A9) is a protein that in humans is encoded by the SLC39A9 gene. This protein is the 9th member out of 14 ZIP family proteins, which is a membrane androgen receptor (mAR) coupled to G proteins, and also classified as a zinc transporter protein. ZIP family proteins transport zinc metal from the extracellular environment into cells through cell membrane.
  • 410
  • 21 Nov 2022
Topic Review
Zip (File Format)
ZIP files generally use the file extensions .zip or .ZIP and the MIME media type application/zip. ZIP is used as a base file format by many programs, usually under a different name. When navigating a file system via a user interface, graphical icons representing ZIP files often appear as a document or other object prominently featuring a zipper.
  • 3.1K
  • 14 Oct 2022
Topic Review
Zinc–Bromine Flow Batteries
The development of energy storage systems (ESS) has become an important area of research due to the need to replace the use of fossil fuels with clean energy. Redox flow batteries (RFBs) provide interesting features, such as the ability to separate the power and battery capacity. This is because the electrolyte tank is located outside the electrochemical cell. Consequently, it is possible to design each battery according to different needs. In this context, zinc–bromine flow batteries (ZBFBs) have shown suitable properties such as raw material availability and low battery cost. To avoid the corrosion and toxicity caused by the free bromine (Br2) generated during the charging process, it is necessary to use bromine complexing agents (BCAs) capable of creating complexes.
  • 236
  • 29 Dec 2023
Topic Review
Zinc-Dependent Histone Deacetylases in Lung Endothelial Pathobiology
The intricate dynamics of endothelial cells (ECs), form a monolayer along blood vessel lumens and act as a semi-selective barrier between blood and interstitial spaces. In instances of inflammatory or toxic events, compromise of the lung EC barrier may lead to pulmonary edema, a crucial aspect of acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). The nuanced control of EC functions involves epigenetic mechanisms, particularly those mediated by zinc-dependent histone deacetylases (HDACs). Representing the largest HDAC subgroup, zinc-dependent HDACs are activated by Zn2+ and play a pivotal role in epigenetic regulation by modifying chromatin structure and deacetylating non-histone proteins.
  • 178
  • 28 Feb 2024
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