Subjects: Materials Science >> Nanoscience and Nanotechnology submitted time 2021-03-26
Abstract： Solar stills have attracted increasing attentions in recent years due to its ability of simple construction and eco-friendly. In this study, the weighted values of environment factors on evaporation efficiency are obtained by using a well-established machine learning algorithm, random forest. To test the advancement between random forest and mathematical data analysis, two traditional data science methods, pair wise plots and Pearson correlation analysis, were conducted for comparison. Experimental data used in analysis were collected from around 100 articles since 2014. The results indicated that thermal design was the most significant factor that contributes in high-efficiency solar evaporation. It will promote the studies on evaporation efficiency solar stills. "
Peer Review Status:
Awaiting Review
Subjects: Geosciences >> Geography submitted time 2024-03-01 Cooperative journals: 《干旱区研究》
Abstract： Using ensemble empirical mode decomposition and the M- K mutation test, the multi- times calecharacteristics of the evolution of total solar radiation in Dunhuang city were analyzed based on themeteorological data of total solar radiation, relative humidity, total cloudiness, and dust days in Dunhuang citybetween 1971 and 2020. The key meteorological factors influencing solar radiation in Dunhuang city wereexplored. The results show the following: (1) There was a significant upward trend of annual total solar radiationin Dunhuang city between 1971 and 2020, with a linear climate propensity rate of 49.6 MJ·m-2·(10a)-1, and themultiyear average annual radiation was 6354.0 MJ ·m- 2, belonging to the area with the most abundant solarresources. The annual radiation was lowest in the 1970s and highest in the 2010s. Dunhuang has four distinctseasons of solar radiation, with radiation increasing at rates of 32.5, 13.4, 2.9, and 1.1 MJ ·m- 2 · (10a)- 1 insummer > spring > fall > winter, respectively. The total solar radiation in Dunhuang city in the last 50 years wasdominated by interannual variations of 2.9 and 7.1 years and interdecadal variations of 16.7 years. (2) Monthlysolar radiation varied in a“single- peak”pattern, with a sharp increase in March, a peak in May, a gradualdecrease in June, and a yearly minimum in December. The hourly distribution of total solar radiation ismonomodal, with the maximum occurring between 12:00 and 13:00 a.m. (3) The annual, spring, and summersolar radiation changes were abrupt in 1997, 2000, and 1982. (4) Meteorological factors affecting solar radiationat Dunhuang can be attributed to three factors: atmospheric transparency, illumination, and humidity, and thecorrelation between each meteorological factor and solar radiation varies according to the seasons.
Subjects: Biology >> Botany submitted time 2022-12-01 Cooperative journals: 《广西植物》
Abstract：
In order to study the effect of different application modes of phosphorus-solubilizing bacterial fertilizer on seedling phosphorus nutrition of Pinus massoniana, a pot inoculation experiment with local and evenly application of PSB fertilizer was set up. Using WinRHIZO Pro STD1600+ root image analysis software and Molybdenum antimony colorimetric method, we studied the responses of P uptake and root growth of different P. massoniana families under different PSB fertilizer treatments. The results were as follows: (1)Inoculating PSB fertilizer had a significant effect on growth of P. massoniana seedlings. The main growth indexes, such as seedling height, ground diameter, root dry matter weight, root shoot ratio and whole plant dry matter weight, significantly increased under local treatment. (2)Local treatment significantly increased the root length, root surface area, root volume and root tip number of seedlings. The root length of 0
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