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Yunnan province is most important area of potato planting in China. Meanwhile, there are many factors constraint to its developments, especially pest damage. So, eleven potato cultivars (such as Hezuo 88, Lishu 6, Qingshu 9 and Yunshu 304) of vital commercial variety in Yunnan were selected for pests investigation. The field survey of eleven potato cultivars in two cropping seasons (spring and autumn) was conducted from 2020 to 2021 in Yunnan province, China. During autumn planting season of 2020 and 2021, populations of eight insect pests including aphid, thrips, whitefly, leafhopper, potato tuber moth, tomato leaf miner, beet armyworm and cabbage moth were surveyed. All pest's population peaked in October. Meanwhile, Qingshu 9 and Yunshu 304 has the largest population of aphid. The largest population of whitefly were reported on Hezuo 88 and Yunshu 304, respectively. The largest population of thrips were found on Hezuo 88, whereas Qingshu 9 has the lowest population of whitefly. The lowest population of aphid were observed on Lishu 6. The lowest population of thrips were found on Yunshu 304. During spring planting season of 2021, population of thrips, leafhopper and adult potato tuber moth were surveyed. The highest population was appeared in June. But there was no significant difference for the pests populations among different cultivars. These results of pests population dynamics during the cropping period would be helpful for making appropriate and sustainable pest management strategies. [ABSTRACT FROM AUTHOR]

Stress-related growth (SRG) can be understood as stressful experiences that act as catalysts for positive life changes. Although less severe than typical 'trauma,' some daily obstacles may nevertheless derail faith and intentions, produce distress, result in a demand for reflection, and provide a possibility for SRG. This study examined the direct and indirect effects of event severity, social support, and optimism on SRG among emerging adults attending college in China. A convenience sample of 365 college students, ranging from 18 to 24 years old, completed surveys on event severity, social support, optimism, and SRG. We applied structural equation modeling and bootstrapping to explore optimism in the mediation model. Results demonstrated that event severity and social support have direct and indirect effects on SRG through a partial mediation effect of optimism. The results indicate that interventions targeting optimism might be an effective approach to improving SRG among college students in China. [ABSTRACT FROM AUTHOR]

People who find meaning in life can endure 'any' pain. However, there were no tools to investigate elderly individuals' sources of meaning in life in China. This study aimed to develop the Sources of Meaning in Life Scale for the Elderly (SMSE), and examine the validation and reliability in Chinese elderly. A 43-item pool of SMSE was formed by combining the preliminary interview and literature review. A cross-sectional survey of 627 elderly people was then conducted in two community health service centers, two hospitals, and two nursing homes in Guangzhou by the convenience sampling method. Test–retest reliability was assessed with 24 elderly persons. Six dimensions, containing family (four items), social support (four items), value (seven items), life security (four items), personal development (four items), and leisure activity (five items) explained 62.16% of the variance in total. Confirmatory factor analysis model fitting indices were χ2 = 694.652, df = 330, χ2/df = 2.105, SRMR = 0.0695, GFI = 0.853, IFI = 0.905, TLI = 0.889, CFI = 0.903, and RMSEA = 0.062. The Cronbach's alpha value of the scale was 0.924, while that of each dimension was between 0.727 and 0.870. The inter-class correlation (ICC) of the scale was 0.856. The SMSE has good reliability and validity that can be used to evaluate the sources of meaning and meaning in life for the elderly. [ABSTRACT FROM AUTHOR]

Cooling is a critical process in the thermal designs of high-voltage light-emitting diodes (HV-LEDs), whose junction temperatures are in turn an essential criterion for evaluations of LED aging, light-color quality, and luminous efficacies. In the present work, both numerically and experimentally, we have identified two cooling-related parameters, namely thermal crowdedness and nonuniformity, that are related to the lowering of junction temperatures of 17 microchips. Based on these two parameters, we have further proposed three regimes that facilitate the optimization. In addition, great care must be taken to incorporate the difficulty of tackling the high voltage into electrical-resistance selections. The 3D transient conjugate heat transfer is simulated using the finite element package named COMSOL. Finally, we hope that the present study can provide the photonic and cooling industries with the guidance for optimizing cooling characteristics in HV-LEDs based on these two parameters and three regimes. [ABSTRACT FROM PUBLISHER]