In vitro Antibacterial Effect Study of Plasma-Activated Saline on .

Purpose: This study aimed to investigate the antibacterial effects of plasma-activated saline (PAS) on My-cobacterium tuberculosis (Mtb).

Methods: We conducted a growth assay on 3 strains of Mtb and an antibiotic sensitivity test on 4 strains of Mtb. Both tests included groups treated with normal saline (NS), PAS, and hydrochloric acid (HCl).

Study on Stability of Mechanical Properties for Porous Fe-Cr-Al Alloys after Long-Term Aging.

Nowadays, both the ferrite phase and B2-structured intermetallic in the Fe-Cr-Al alloy system are developed as porous materials, which have been further applied as high-temperature filter materials in industry. This work presents a comparative study of the mechanical properties of porous Fe20Cr5Al, Fe10Cr10Al and Fe10Cr20Al aged at 480 °C for 500 h. The changes in tensile strength, elongation and hardness were determined, and the microstructure changes as well as slight oxidation states of the aged samples were investigated.

A comparative study of the effects of different TiO supports toward CO electrochemical reduction on CuO/TiO electrode.

CuO-based electrodes possess vast potential in the field of CO electrochemical reduction. Meantime, TiO supports show the advantages of being non-toxic, low-cost and having high chemical stability, which render it an ideal electrocatalytic support with CuO. However, different morphologies and structures of TiO supports can be obtained through various methods, leading to the discrepant electrocatalytic properties of CuO/TiO.

Microstructure and Mechanical Properties of Novel Lightweight TaNbVTi-Based Refractory High Entropy Alloys.

A series of novel lightweight TaNbVTi-based refractory high entropy alloys (RHEA) were fabricated through ball-milling and spark plasma sintering (SPS). The reinforced phase of TiO precipitates were in-situ formed due to the introduction of AlO ceramic particles. The RHEA with 15% AlO exhibits a high compressive yield strength (1837 MPa) and a low density (7.

Speciation characterization of arsenic-bearing phase in arsenic sulfide sludge and the sequential leaching mechanisms.

Arsenic sulfide sludge (ASS) is a kind of deleterious waste which contains various valuable metallic elements, such as Re and Pb, which are always associated with arsenic-bearing phases in ASS. The leaching speed and efficiency of valuable elements may depend on the phase constitution. Here, we proposed a sequential leaching method to thoroughly understand the constitution of arsenic-bearing phase and the distribution of valuable elements in ASS.

CO photoelectroreduction with enhanced ethanol selectivity by high valence rhenium-doped copper oxide composite catalysts.

CuO supported catalyst with high valence rhenium doping were specially studied for photoelectrocatalytic reduction of CO to small molecular alcohols, which were synthesized by nitrate thermal decomposition method on anatase TiO nanotube arrays (TiO-NTs). Photoelectrochemical measurements indicate that the high valence rhenium doping helps in improving the catalytic activity and selectivity of CuO supported catalysts. For the case of 6 wt% Re-doped CuO/TiO-NTs calcined at 723 K, the principal products are methanol and ethanol with yield up to 19.

Multi-scale nacre-inspired lamella-structured Ti-Ta composites with high strength and low modulus for load-bearing orthopedic and dental applications.

Mimicking the hierarchical structure of nacre in artificial materials is a promising approach to obtain high mechanical performance. In this work, nacre-inspired lamella-structured Ti-Ta composites were fabricated by successive spark plasma sintering, mechanical processing and annealing. The specimen sintered at 1200 °C and then hot rolled with 60% height reduction exhibited multi-scale lamellar microstructure.

The osteogenic, inflammatory and osteo-immunomodulatory performances of biomedical Ti-Ta metal-metal composite with Ca- and Si-containing bioceramic coatings.

It is known that good mechanical properties, low modulus to reduce stress-shielding effect, favorable osteogenic activity and limited inflammatory response are critical factors for orthopedic implants to induce excellent osteointegration. In this study, Ti-20% Ta metal-metal composite (referred as Ti-Ta) which consisted of Ti- and Ta-rich phases was fabricated via the strategy of powder metallurgy. Micro-arc oxidation (MAO) was employed to modify the surface of Ti-Ta composite.