To solve the existing technical problems in quality management, distributed control, maintenance and monitoring management faced by traditional diesel generator set(GenSet), this paper summarizes the development status of traditional diesel generator set technology, and analyzes the business requirements of end users for distributed cloud control. Through the integration of traditional diesel generator cloud technology with internet of things technologies(IOT), a new design scheme of cloud GenSet controller is proposed based IoT technology, which simplifies the logic hierarchy of diesel generator cloud control. Then this paper puts forward the key network hardware design, and applies the new cloud GenSet controller to the enterprise new GenSet system, which verifies the feasibility and stability of the new design.

The monthly precipitation data of 56 stations during 47 years (1973-2019) in South Korea are comprehensively analysed using the EOF technique and CSEOF technique respectively. The main motivation for employing this technique in the present study is to investigate the physical processes associated with the evolution of the precipitation from observation data. The first mode account for 77.07% of the total variance and exhibits annual cycle of corresponding PC time series with traditional spatial pattern, and the second mode spatial patterns account for 8.13% of the total variance and show strong north to south gradient. In CSEOF analysis, two leading modes temporal pattern of PC time series reveals the annual cycle on a monthly time scale and long-term fluctuation, the first mode temporal pattern of PC time series account for 73.55% of the total variance and shows an increasing linear trend which represents that temporal variability of first mode pattern has been strengthened. The spatial distribution corresponding to two leading modes show monthly spatial variation. Compared with the EOF analysis, the CSEOF analysis preferably exhibits the spatial distribution and temporal evolution characteristics and variability of South Korea historical precipitation.

This paper studied the microstructure, hardness and impact property of the high match welded joint of Q235A steel. The experiment results showed the grain of the same feature region gradually tended to be coarsening under the approximately same welding speed when the welding current increased. Under the same welding current, the weld zone hardness was the highest, the normalized zone hardness was medium and the overheated zone hardness was lowest but the hardness of each zone was still higher than the hardness of the base metal. The sample impact toughness under 120A welding current was the highest. Under the experimental conditions, the best welding current for high matching welded joints was 120A. The comprehensive mechanical properties of low carbon steel welded joint were the best when the welding current was 120A.

Chinese cherry [ Cerasus pseudocerasus (Lindl). G. Don] is a commercially valuable fruit crop in China. Although Chinese cherry has a long cultivation history in Luding County, the cultivation status and utilization still remain at the early stage. In this study, we investigated the cultivation status and evaluated the economic traits of Chinese cherry germplasms distributed in 39 villages of 12 towns in Luding County. Chinese cherry is widely situated in variable habitats with various topographies and landforms for its great adaptability. All the County plants Chinese cherry for more than 160000 trees with the yield over 6000 t per year. Lengqi, Luqiao, Pengba, Tianba and Wuni towns have relatively higher field yields and higher income than other towns. A large number of Chinese cherry genetic resources are in danger because of the road development, environment destroying and replacement by sweet cherry. The phenological period lasts for nearly 3 to 4 months from infancy to red mature fruits for Luding cherry. The fruit size ranges from 12.14 mm / 14.73 mm to 17.51 mm / 19.11 mm (longitudinal / transverse diameter) with the fruit shape index from 0.80 to 0.92, revealing nearly spherical shape. The weight per fruit ranges from 1.91 to 3.61 g, corresponding to the germplasms of Nanmenguan Yanzigou and Machang Pengba. The total soluble solid content is over 14% among 12 Luding Chinese cherry resources with the maximum value of 18.8%. Vitamin C and total sugar content ranges from 4.03 to 8.75 mg·100mL −1 , and from 7.82 to 13.82 g·100mL −1 , respectively. By comprehensive evaluation, Chinese cherry germplasms from Wuni and Machang villages show the most excellent economic traits, which can be further developed and utilized in the future. The transverse diameter, weight per fruit, and total acid content reveal significant positive correlation with altitude, while fruit shape index and sugar accumulation is negatively correlated to altitude. In addition, Luding Chinese cherry reveal some advantages compared with other areas in Sichuan Basin so that effective measures should be taken to preserve these valuable resources and utilize them for cherry breeding program in the future.

Tropical cyclones (TCs) have caused heavy losses of human life and property. Hence, it is necessary to study TC. Additionally, the retrieval of wind direction is an important part among many researches of TC. Fortunately, Typhoon Iselle, Typhoon Nuri, and Tropical Storm Haima were captured by RADARSAT-2, Typhoon Hermine, Tropical Storm Harvey, and Super Typhoon Jose were captured by Sentinel-1A. In this paper, the wind directions of the six TCs are retrieved from SAR images by improved local gradient (ILG) method. The results show that the sea surface wind directions retrieved by ILG method have good correlation with the texture of the six TCs, respectively. This research is helpful for estimating wind speeds and constructing wind field of a TC.

A pot experiment was conducted to study the effects of intercropping with post-grafting generation of Cosmos sulphureus on physiological growth of grape seedlings under cadmium stress by determining the biomass, the chlorophyll a , chlorophyll b , total chlorophyll and carotenoid content, the activities of superoxide dismutase (SOD) and catalase (CAT) and the soluble protein and sugar content. All in all, these results illustrated that intercropping with post-grafting generation of C. sulphureus increased the biomass, photosynthetic pigment and osmotic substance content and also enhance the antioxidant enzyme activities compared to the grape seedlings monoculture, especially intercropping with post-grafting generation of C. sulphureus of self-rooted grafting by two different development stages of plant seedling. Thus, intercropping with post-grafting generation of C. sulphureus played an important role in grape seedlings restoration even under cadmium stress and also provided theoretical basis for other plant restoration.