Digital light printing of zirconia/resin composite material with biomimetic graded design for dental application.

Objective: Stress concentration and excessive wear on the opposite jaw teeth are the main problems that lead to the failure of all-ceramic crown restoration. The objectives of this study were to: (1) Synthesize the biomimetic gradient zirconia/resin composites. (2) Control the porosity and structure so that the mechanical properties of the biomimetic gradient zirconia/resin composites are close to enamel and dentin.

Glutaraldehyde base-cross-linked chitosan-silanol/FeO composite for removal of heavy metals and bacteria.

We designed and synthesised a magnetic adsorbent (FeO@Si-OH@CS-Glu) combining chitosan-silanol groups with glutaraldehyde as a cross-linking agent, which has improved physicochemical properties and can be used to remove multiple heavy metals and bacteria from polluted water. The adsorbent was characterised with SEM, XRD, FTIR, BET, VSM, and zeta potential. Under optimum conditions, the adsorption efficiencies of FeO@Si-OH@CS-Glu for Cr, As, Hg, and Se were as high as 90.

Numerical Study of Three Ventilation Strategies in a prefabricated COVID-19 inpatient ward.

Prefabricated inpatient wards have been proven to be an efficient alternative to quickly extend the caring capacity for patients. In this study, three typical ventilation strategies were studied using computational fluid dynamics in a prefabricated Coronavirus disease 2019 double-patient ward. Pollutants are the respiratory droplets and aerosols injected from two manikins.

[MicroRNA-29a-3p regulates osteoblast differentiation and peri-implant osseointegration in a rat model of hyperlipidemia by modulating Frizzled 4 expression].

Objective: This work aimed to study and identify the influence and target gene of microRNA-29a-3p (miR-29a-3p) in the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) in a high-fat environment in vitro and in vivo.

Methods: 1) In vitro: BMSCs were randomly allocated into two groups and were then induced to undergo osteogenic differentiation in a normal or high-fat environment. Next, a miR-29a-3p mimic/inhibitor was transfected into the two groups of cells.

MicroRNA-29a-3p enhances dental implant osseointegration of hyperlipidemic rats via suppressing dishevelled 2 and frizzled 4.

Background: Fine osseointegration is the basis of long-term survival of implant. In our previous study, we observed a strong correlation between hyperlipidemia and compromised osseointegration. MicroRNA-29a-3p (miR-29a-3p) has been discovered to participate in bone marrow mesenchymal stem cells (BMSCs) differentiation.

Stereoselective preparation of (E)-(1,2-difluoro-1,2-ethenediyl) bis[tributylstannane] and stereospecific synthesis of (E)-1,2-difluorostilbenes.

[reaction: see text]. The novel bisstannane (E)-(1,2-difluoro-1,2-ethenediyl) bis[tributylstannane] 2 was stereoselectively prepared in a high overall yield through a sequential synthetic route from chlorotrifluoroethylene 1. The synthetic application of this novel bisstannane 2 was exemplified in the Pd(PPh3)4/CuI-catalyzed cross-coupling reactions with aryl iodides, yielding (E)-1,2-difluorostilbenes 3 in moderate to high yields.