Construction of a lung cancer 3D culture model based on alginate/gelatin micro-beads for drug evaluation.

Background: Lung cancer is one of the most common malignant tumors worldwide. Despite advances in lung cancer treatment, patients still face challenges related to drug resistance and recurrence. Current methods for evaluating anti-cancer drug activity are insufficient, as they rely on two-dimensional (2D) cell culture and animal models.

Promoting ordering degree of intermetallic fuel cell catalysts by low-melting-point metal doping.

Carbon supported intermetallic compound nanoparticles with high activity and stability are promising cathodic catalysts for oxygen reduction reaction in proton-exchange-membrane fuel cells. However, the synthesis of intermetallic catalysts suffers from large diffusion barrier for atom ordering, resulting in low ordering degree and limited performance. We demonstrate a low-melting-point metal doping strategy for the synthesis of highly ordered L1-type M-doped PtCo (M = Ga, Pb, Sb, Cu) intermetallic catalysts.

A Decision-Making System for Low Carbon Manufacturing.

Based on the stochastic market demand of products, this paper studies the low-carbon manufacturing decisions making of manufacturing enterprises considering downward substitution and green technology input under the carbon cap-and-trade policy. The results show that the government's carbon trade policy will have a great impact on the production of manufacturing enterprises. Therefore, manufacturing enterprises must attach importance to the constraints of the government's carbon emission reduction policies.

An Empirical Study on the Relationship among Mental Health, Learning Engagement, and Academic Self-Efficacy of Senior High School Students.

This study examines the mediating role of the academic self-efficacy of high school students in Tibetan and Qiang areas of China on the relationship between their mental health and learning engagement, as well as their gender and grade-specific differences in mental health, learning engagement, and academic self-efficacy. The authors drew 600 valid samples in Tibetan and Qiang areas of China, built a measurement model and a structure model, established a structural equation model comprising the mental health scale, the learning engagement scale, and the academic self-efficacy scale, and conducted an independent sample -tests and a one-way analysis of variance. The questionnaires took the form of the 5-point Likert scale.

Pentacoordinate Al Sites Anchoring Synthesis of Palladium Intermetallic Catalysts on AlO Supports.

Size control of supported Pd-based intermetallic nanoparticles (i-NPs) remains a major challenge because the required high-temperature annealing for atomic diffusion and ordering easily causes metal sintering. Here, we described a pentacoordinate Al site (Al) anchoring approach for the preparation of Pd-based i-NPs with controlled size, which takes advantage of the strong chemical interaction between Al sites and Pd-based i-NPs to realize size control. We synthesized six types of Pd-based i-NPs, and four of them can remain an average particle size of <6 nm.

Reducing greenhouse gas emissions: a duopoly market pricing competition and cooperation under the carbon emissions cap.

This article studies the price competition and cooperation in a duopoly that is subjected to carbon emissions cap. The study assumes that in a departure from the classical Bertrand game, there is still a market for both firms' goods regardless of the product price, even though production capacity is limited by carbon emissions regulation. Through the decentralized decision making of both firms under perfect information, the results are unstable.