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This work analysed the principle of flocculation purification method and the flocculation purification effect of fully synthesized water-based cutting fluid under experimental conditions, and the anti-corrosion performance of the purified cutting fluid was studied. Then, the engineering application of flocculation purification method in the centralized liquid supply system was carried out to form a flocculation purification method suitable for the Centralized liquid supply and chip removal system of fully synthesized water-based cutting fluid. This work can provide an effective evolutionary method for the fully synthetic water-based chip cutting fluid of the centralized liquid supply system.

Acetone is a biomarker found in the expired air of patients suffering from diabetes. Therefore, early and accurate detection of its concentration in the breath of such patients is extremely important. We prepared Tin(IV) oxide (SnO2) nanospheres via hydrothermal treatment and then decorated them with bimetallic PtAu nanoparticles (NPs) employing the approach of in situ reduction. The topology, elemental composition, as well as crystal structure of the prepared materials were studied via field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. The findings revealed that bimetallic PtAu-decorated SnO2 nanospheres (PtAu/SnO2) were effectively synthesized as well as PtAu NPs evenly deposited onto the surface of the SnO2 nanospheres. Pure SnO2 nanospheres and PtAu/SnO2 sensors were prepared, and their acetone gas sensitivity was explored. The findings demonstrated that in comparison to pristine SnO2 nanosphere sensors, the sensors based on PtAu/SnO2 displayed superior sensitivity to acetone of 0.166–100 ppm at 300 °C, providing a low theoretical limit of detection equal to 158 ppm. Moreover, the PtAu/SnO2 sensors showed excellent gas response (Ra/Rg = 492.3 to 100 ppm), along with fast response and recovery (14 s/13 s to 10 ppm), good linearity of correlation, excellent repeatability, long-term stability, and satisfactory selectivity at 300 °C. This improved gas sensitivity was because of the electron sensitization of the Pt NPs, the chemical sensitization of the Au NPs, as well as the synergistic effects of bimetallic PtAu. The PtAu/SnO2 sensors have considerable potential for the early diagnosis and screening of diabetes. [ABSTRACT FROM AUTHOR]

Image sensors on silicon have the problems of small size and high cost. Therefore, we propose a method for making image sensors on glass substrates and analyzes the feasibility of replacing Image Sensors on Silicon from the performance and cost. Through calculation and measurement, the scanning resolution, conversion gain, signal‐to‐noise ratio, and scanning time of image sensors on glass substrates can all meet the requirements of the document scanner and barcode scanner; In addition, the image sensors on glass can be formed in large size and does not require splicing, resulting in lower costs compared to image sensors on silicon of the document scanner. Therefore, image sensors on glass can replace image sensors on silicon of the document scanner. The cost and the module size of the barcode scanner is higher than the existing product, So image sensors on glass used for barcode scanners is lack of advantages in application. [ABSTRACT FROM AUTHOR]

Gaseous SO2 acidification Ce-based catalysts were prepared and used for the selective reduction of NO with NH3. S–Ce was obtained by direct anaerobic sulfation of CeO2, while H–S–Ce was obtained by reduction of CeO2 and then anaerobic sulfation. Both S–Ce and H–S–Ce exhibited excellent SCR activity, and the S–Ce catalyst displayed the best catalytic performance. The activity of CeO2 was below 30% in the whole temperature range, while the activity of S–Ce reached 90% at 250 °C and remained 100% at 300–450 °C. Anaerobic sulfation could enhance the redox and surface acidity of the S–Ce catalyst. The acid sites favored NH3 adsorption, while the H–S–Ce catalyst exhibited considerable surface acidity, but the redox performance was weakened by stable sulfate. The reaction mechanism showed that a huge number of NH3 species adsorbed on S–Ce catalysts were consumed by NO gas. The present nitrate species and NO2 were removed. The SCR reaction followed E–R and L–H mechanisms for S–Ce. A large number of NH3 species on H–S–Ce were cleared by NO, and NO could hardly adsorb on its surface. The SCR reaction followed the E–R mechanism. [ABSTRACT FROM AUTHOR]

Developing natural product-based anti-cancer drugs/agents is a promising way to overcome the serious side effects and toxicity of traditional chemotherapeutics for cancer treatment. However, rapid assessment of the in vivo anti-cancer activities of natural products is a challenge. Alternatively, zebrafish are useful model organisms and perform well in addressing this challenging issue. Nowadays, a growing number of studies have utilized zebrafish models to evaluate the in vivo activities of natural compounds. Herein, we reviewed the application of zebrafish models for evaluating the anti-cancer activity and toxicity of natural products over the past years, summarized its process and benefits, and provided future outlooks for the development of natural product-based anti-cancer drugs. [ABSTRACT FROM AUTHOR]