Results 261 to 270 of about 19,744 (308)

Structural biofilm resistance of carbon‐infiltrated carbon nanotube coatings

Journal of Orthopaedic Research, 2021
AbstractPeriprosthetic joint infection (PJI) is a devastating complication of orthopedic implant surgeries, such as total knee and hip arthroplasties. Treatment requires additional surgeries because antibiotics have limited efficacy due to biofilm formation and resistant bacterial strains such as methicillin‐resistant Staphylococcus aureus (MRSA).
Stephanie R. Morco, Dustin L. Williams, Brian D. Jensen, Anton E. Bowden   +3 more
openaire   +2 more sources

Q-Carbon as a Corrosion-Resistant Coating

ACS Applied Materials & Interfaces, 2023
A newly discovered quenched form of carbon, widely known as Q-carbon, thin films are synthesized by the direct conversion of the amorphous carbon layer using the nanosecond pulsed laser annealing technique, and its corrosion-resistant properties, that is, potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy technique, are ...
Subrata Karmakar, Maria Sultana, Ariful Haque   +2 more
openaire   +2 more sources

Role of carbonic anhydrases in ferroptosis-resistance

Archives of Biochemistry and Biophysics, 2020
Iron is essential for all the lives on earth but may trigger a switch toward ferroptosis, a novel form of regulated necrosis. Carbonic anhydrases (CAs) are ubiquitous enzymes from microbes to humans. The primary function of CAs is to regulate cellular pH by hydrating carbon dioxide (CO2) to protons (H+) and bicarbonate ions (HCO3-).
Zan Li, Li Jiang, Shinya Toyokuni
openaire   +2 more sources

Structural Response of Oxidation Resistant Carbon-Carbon Composites

Aerospace and Materials, 1996
Abstract The experimental assessment as well computational simulation of time, temperature, and oxidation dependent material properties of carbon-carbon composites with inhibited matrix is undertaken. The material system examined is HITCO 2D CC137EH, highly inhibited (boron carbide particulates), eight harness satin weave, RT42 CVD SiC ...
T.H Ashley, O.O Ochoa
openaire   +1 more source

Thermal Fatigue Resistance of A Carbon-Carbon Composite

MRS Proceedings, 1992
ABSTRACTThermal fatigue resistance of carbon-carbon composites with three different fiber surface treatments is studied in thermal cycles between 100 °C and 1,700 °C up to a number of cycles of 100 in free and restricted expansion conditions. The effects of thermal cycles were studied by SEM paying attention especially to structural damage and ...
Q.C. Gu, T.K. LepistÖ, P.O. Kettunen
openaire   +1 more source

Electrical Resistance Measurements in Carbon-Carbon Composites

Mechanical Behavior of Advanced Materials, 1998
Abstract In-situ electrical resistance measurements of carbon-carbon laminates were obtained in an oxidizing environment at 900 C. Scanning electron and optical microscopy were utilized to interpret the physical damage incurred from oxidation and its impact on the mechanical and electrical properties of the carbon-carbon substrate.
O. O. Ochoa, P. A. Parker
openaire   +1 more source

Liquid carbon density and resistivity

Journal of Physics: Condensed Matter, 2008
As was shown in Gathers et al (1974 Report UCRL-51644 (Lawrence Livermore Laboratory, September 14)), graphite specimens of low initial densities (heated at gas pressure 2-4 kbar) contract to higher density still in the solid state and then continue further expanding up to the melting line.
openaire   +2 more sources

Erosion Resistance of Carbon-Carbon Ion Optics

Journal of Propulsion and Power, 2001
A principal consideration in the design of ion thrusters for spacecraft propulsion is erosion of the downstream grid in the ion optics. Achieving adequate lifetime (10,000 h or more for many potential missions) without grid wear-through can impose signiŽ cant constraints on thruster performance.
openaire   +1 more source

Electrical Resistivity of Carbon-Carbon Composites,

1988
Abstract : A simple four-point method for measuring the resistivity of carbon-carbon composite billets was developed. Measurements compare favorably with previously published results. Keywords: Carbon carbon composites, Electrical resistance, Graphitic ordering, Resistivity ratio.
openaire   +1 more source