4-Deoxy--Pyrromycinone: A Promising Drug/Lead Compound to Treat Tumors.

Background: Anthraquinone drugs are widely used in the treatment of tumors. However, multidrug resistance and severe cardiac toxicity limit its use, which have led to the discovery of new analogues. In this paper, 4-Deoxy--pyrromycinone (4-Deo), belonging to anthraquinone compounds, was first been studied with the anti-tumor effects and the safety in vitro and in vivo as a new anti-tumor drug or lead compound.

Research Progress on Photocatalytic CO Reduction Based on Perovskite Oxides.

Photocatalytic CO reduction to valuable fuels is a promising way to alleviate anthropogenic CO emissions and energy crises. Perovskite oxides have attracted widespread attention as photocatalysts for CO reduction by virtue of their high catalytic activity, compositional flexibility, bandgap adjustability, and good stability. In this review, the basic theory of photocatalysis and the mechanism of CO reduction over perovskite oxide are first introduced.

Nitric Oxide Improves Salt Tolerance of by Regulating Endogenous Glutathione Level and Antioxidant Capacity.

is commonly used to treat diabetes in China. However, the natural habitats of are typically affected by salt stress. Previous studies showed that nitric oxide (NO) level was related to salt tolerance of , and its synthesis was induced by exogenous hydrogen sulfide.

Recent Development of Non-Contact Multi-Target Vital Sign Detection and Location Tracking Based on Metamaterial Leaky Wave Antennas.

Microwave radar sensors have been developed for non-contact monitoring of the health condition and location of targets, which will cause minimal discomfort and eliminate sanitation issues, especially in a pandemic situation. To this end, several radar sensor architectures and algorithms have been proposed to detect multiple targets at different locations. Traditionally, beamforming techniques incorporating phase shifters or mechanical rotors are utilized, which is relatively complex and costly.

Study on the method of compensation for the heading effect of the rate offset frequency laser inertial measurement unit.

For the rate offset frequency laser inertial measurement unit (IMU), the errors of its three attitude angles, laser gyroscope, and accelerometer are coupled, which will affect the initial alignment result of the IMU and will make the measurement results of the IMU at different positions and angles deviate from the truth value. Meanwhile, with the increase of tilt angle, the heading effect becomes more obvious, and the error value is distributed positively cosine with the heading angle. In order to ensure the adaptability of the IMU to various operating conditions, it is necessary to compensate for the heading effect.