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Mild cognitive impairment (MCI) is a transition state between normal aging and dementia, in which a person is still able to be independent in daily activities, but memory and logical thinking skills may have a distinctly decline. In clinical practice, MCI has a high risk of progressing to dementia, so early treatment of MCI is crucial in delaying the onset and progression to dementia. Drug treatment is now the primary approach for MCI, but long-term drug treatment can lead to strong addictive tendencies and produce toxic side effects. Therefore, it is extremely urgent to explore effective rehabilitation training methods. Rehabilitation training for MCI patients mainly includes cognitive training, aerobic exercise, non-invasive brain stimulation (NIBS), and hyperbaric oxygen therapy, etc. Cognitive training is a kind of continuous stimulation of patients through multi-task combined pattern to rebuild the neural network in the brain so as to improve cognitive function. This intervention has been widely sought after by patients for its effectiveness in cognitive rehabilitation. Aerobic exercise is a kind of daily training mode, which aims to increase the perfusion of patients' brain tissue through the coordination of muscle groups, improve patients' reaction ability and cognitive function. Its training method is close to life which makes it easily accepted by patients. NIBS is an emerging technology characterized by simplicity and safety. It uses external devices to connect with the cerebral cortical areas and activate the corresponding functions in the brain, thereby improving cognitive function. Hyperbaric oxygen therapy is a relatively mature treatment method, which uses atmospheric pressure difference to effectively improve the oxygen content in brain tissue and blood flow, thereby stabilizing and controlling the blood oxygen saturation. It also has a significant therapeutic effect on brain tissue injury in MCI patients. Rehabilitation training has gradually caught the eye of the public due to its high safety and simple operation in clinical practice. Therefore, the common rehabilitation training methods have been summarized and generalized which could provide certain references for the development of clinical treatment programs.

The online learning practice has already demonstrated that the quality of interaction and motivation in collaborative learning is not as good as expected, due to the loneliness and burnout feeling spawned by inadequate learning status information about others. This study proposed a model on group awareness to feedback information of group learning status with charts or diagrams, including the cognitive awareness, social awareness and behavioural awareness, so as to support the self-regulated learning and group interaction. On the platform developed for teaching of computer science, an experiment that lasted for one semester was conducted on three classes (one experimental class and two control classes). And students' ability of learning strategies and self-efficacy were measured before and after the experiment. The group awareness tool embedded in the platform was applied to generate status about the interaction in Computer-Supported Collaborative Learning. The data analysis showed that the model had a significant effect on maintaining motivation, reducing the sense of loneliness and improving interaction quality.

This study evaluates the flotation performance of a novel combination collector, LCJ, on lepidolite from Jiangxi Province, China. A comparative analysis with the on-site collector EO demonstrates an economically efficient separation scheme for lepidolite. Results show that LCJ outperforms EO in capturing lepidolite. Employing 400 g/t sodium hexametaphosphate as an inhibitor and 290 g/t LCJ as a collector, a flotation process with one rougher, two cleaner, and two scavenger stages achieves a lepidolite concentrate with a Li2O grade of 2.10% and a recovery of 78.62%. LCJ also enhances foamability within conventional air-inflation ranges. Infrared testing, Zeta potential analysis, and contact angle measurements indicate similar organic adsorption on the lepidolite surface for both collectors. However, LCJ significantly influences the Zeta potential, increasing hydrophobicity. These findings confirm LCJ as an efficient and selective collector for lepidolite flotation, with promising application prospects. [ABSTRACT FROM AUTHOR]

Skin contact with cold objects can induce the perception of wetness, known as the wetness illusion, even in the absence of actual moisture. However, the differences between wetness perceived from moisture and cooled-dry soft materials and how the material parameters affect the wetness illusion from cooled-dry soft materials remain unclear. This study recruited 12 women and 12 men to touch paired moisture and dry fabrics to compare the prescription and intensity of wetness, suggesting that the wetness illusion focused more on roughness and stickiness while the wetness of moisture fabrics sensed more on coldness. Another 12 women touched cooled-dry materials with different temperatures (10°C and 15°C), thicknesses (0.75/0.73 and 1.99/1.96 mm), and dynamic friction coefficients (mean coefficient of friction) (0.17 and 1.88), rating on wetness dissimilarity and intensity of wetness, coldness, softness, and roughness. Data were illustrated in a two-dimensional space by multidimensional scaling, in which dimension 1 represented the haptic perception in wetness, most related to the mean coefficient of friction, and dimension 2 represented the coldness perception in wetness, most related to temperature. Overall, the mean coefficient of friction and the temperature of the material had a strong influence on the wetness illusion, while the thickness had less impact. This study improves the understanding of wetness illusion and sheds light on the reproduction of wetness perception in multisensory augmented virtual reality, such as immersive gaming and virtual dress fitting. [ABSTRACT FROM AUTHOR]