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  • Open Access

    ARTICLE

    Assessment Framework of Green Intelligent Transformation of Small Hydropower in China

    Jun Shi*

    Energy Engineering, Vol.119, No.2, pp. 681-697, 2022, DOI:10.32604/ee.2022.014942

    Abstract With the comprehensive promoted construction of the establishment of green small hydropower, the defects of existing small hydropower station are gradually emerging, and it is necessary to implement green intelligent transformation to promote the construction of energy internet in China. This study focuses on constructing a green intelligent planning and transforming assessment framework, and assists management department to filtrate the small hydropower stations which can be transformed reasonably. Firstly, power station economy, ecological environment, technical safety management and social benefits are involved in the assessment index system. Secondly, multi-expert judgment aggregation based on fuzzed comparison scale is put forward to… More >

  • Open Access

    ARTICLE

    Tree Height-Related Hydraulic Strategy to Cope with Freeze-Thaw Stress in Six Common Urban Tree Species in North China

    Cunyang Niu, Wenkai Shou, Li Ma, Jianqiang Qian*

    Phyton-International Journal of Experimental Botany, Vol.91, No.4, pp. 811-825, 2022, DOI:10.32604/phyton.2022.019386

    Abstract Urban trees are sensitive to extreme weather events under climate change. Freeze-thaw induced hydraulic failure could induce urban tree dieback and nullify the services they provide. Plant height is a simple but significant trait for plant ecological strategies. Understanding how urban trees with different heights adapt to freeze-thaw stress is increasingly important under climate change. We investigated the relationship between tree height and stem hydraulic functional traits of six common urban tree species in North China to explore tree height-related hydraulic strategies to cope with freeze-thaw stress. Results showed that tall trees had wider vessels, higher hydraulic conductivity, more winter… More >

  • Open Access

    ARTICLE

    Population Structure Analysis and Genome-Wide Association Study of Tea (Camellia sinensis (L.) K untze) Germplasm in Qiannan, China, Based on SLAFSeq Technology

    Fen Zhang1, Weili Tian1, Lu Cen1, Litang Lv2, Xiaofang Zeng1, Yulu Chen1, Yichen Zhao2,*, Yan Li1,*

    Phyton-International Journal of Experimental Botany, Vol.91, No.4, pp. 791-809, 2022, DOI:10.32604/phyton.2022.018104

    Abstract Duyun Maojian tea is a famous tea in China. In this study, the specific-locus amplified fragment (SLAF) sequencing method was used to analyze the population structure and conduct a genome-wide association study (GWAS) of 2 leaf traits of 123 tea plants in Qiannan, China. A total of 462,019 SLAF tags and 11,362,041 single-nucleotide polymorphism (SNP) loci were obtained. The results of phylogenetic tree analysis, cluster analysis, and principal component analysis showed that 123 tea germplasms were clustered into three groups, and the heterozygosity rates for Groups I, II, and II were 0.206, 0.224, and 0.34, respectively. Generally, tea germplasms in… More >

  • Open Access

    ARTICLE

    Discount Rate of China’s New Energy Power Industry

    Yafei Rong1, Xudong Sun1,2,*

    Energy Engineering, Vol.119, No.1, pp. 315-329, 2022, DOI:10.32604/EE.2022.015485

    Abstract Under the dual pressures of energy crisis and environmental pollution, China’s new energy power industry has become a focal point for environmental management and requires greater investment. In this context, as a significant input of investment projects, discount rate requires a well-calibrated evaluation because new energy power investment projects are highly capital intensive. The main objective of this paper is to evaluate the discount rate of China’s new energy power industry. First, we use Moving Average to correct the parameters of capital asset pricing model (CAPM) and weighted average cost of capital, which extends the literature on the avoidance of… More >

  • Open Access

    REVIEW

    Genetic Improvement in Juglans mandshurica and Its Uses in China: Current Status and Future Prospects

    Shikai Zhang1,2, Wang Zhan3, Heng Zhang1,2, Shuanglin Song3, Xibin Qu3, Jiayi Wang3, Mulualem Tigabu4, Xiang Li1,2, Qinhui Zhang1,2, Minghui Zhao1,2, Huanzhen Liu2,*, Xiyang Zhao1,2,*

    Phyton-International Journal of Experimental Botany, Vol.91, No.3, pp. 489-505, 2022, DOI:10.32604/phyton.2022.018321

    Abstract Juglans mandshurica is an economically and ecologically valuable species that is used for various construction purposes, making luxurious furniture, as food and sources of medicinal substances and landscaping because of its excellent wood, edible fruits and rich in various types of chemical compounds. In the past few decades, several genetic improvements of J. mandshurica were made, with a focus on the selection of improved varieties and on breeding technology. Many elite provenances and families were selected based on growth traits or wood properties. In recent years, with the increasing demand for high-quality seedlings in Chinese forestry production, the breeding goals… More >

  • Open Access

    REVIEW

    Review on Wind Power Development and Relevant Policies between China and Japan

    Lei Wang1, Zekun Wang2,3,4,*, Yingjian Yang2, Shuni Zhou5, Yehong Dong5, Fanghong Zhang5

    Energy Engineering, Vol.118, No.6, pp. 1611-1626, 2021, DOI:10.32604/EE.2021.016010

    Abstract China has abundant wind energy resources and huge development potential among developing countries. Japan is a developed country that planned to increase the use of renewable energy, especially wind energy. This research is aimed at reviewing the development of wind power and relevant policies between China and Japan. Firstly, we introduced the current status of global wind power development, such as the global installed capacity of wind power. The annual development of wind power generation in China and Japan is compared, and the distribution characteristics of wind resources are compared. Furthermore, the market share in China and Japan is introduced.… More >

  • Open Access

    ARTICLE

    Aging Characteristics and Influencing Factors of the Sheds of Composite Insulators in Karst Regions of China

    Wei Zhao1, Miao Jiang2, Jun Dong1, Lee Li2,*

    Energy Engineering, Vol.118, No.6, pp. 1755-1766, 2021, DOI:10.32604/EE.2021.015467

    Abstract In recent years, more and more high-voltage overhead transmission lines were built passing through the karst regions in southwestern China. This type of special landform seems to have an adverse effect on the aging of the sheds of the line suspension composite insulators, which may lead to unexpected flashover and line tripping. In order to find out the particularity of the aging characteristics of insulators operating in the karst regions, samples in operation were selected from both the karst regions and the flatlands. Hydrophobicity, amount of surface contamination, and contaminant composition of the sheds were studied, then a comparison of… More >

  • Open Access

    ARTICLE

    Complete genome sequence of two strawberry vein banding virus isolates from China

    LEI JIANG1,2,3,#, SHUAI LI1,#, XIZI JIANG1, TONG JIANG1,2,3,*

    BIOCELL, Vol.45, No.6, pp. 1695-1702, 2021, DOI:10.32604/biocell.2021.015250

    Abstract It was rarely reported about strawberry vein banding virus (SVBV) genome sequence in China and most countries worldwide. In this work, we determined the complete genome sequences of two SVBV isolates in China, designated SVBV-AH and SVBV-BJ, that were obtained from naturally infected strawberry samples from Anhui province and Beijing city of China, respectively. The complete genomes of SVBV-AH and SVBV-BJ were 7,862 nucleotides (nts) and 7,863 nts long, respectively, and both constituted with seven genes typical of the caulimoviruses. Alignment of complete nucleotide sequences showed that SVBV-AH and SVBV-BJ shared a significant nucleotide sequence identity of 97.7% of each… More >

  • Open Access

    ARTICLE

    Using Big Data to Discover Chaos in China’s Futures Market During COVID-19

    Lin Tie1, Bin Huang1, Bin Pan1, Guang Sun1,2,*

    CMC-Computers, Materials & Continua, Vol.69, No.3, pp. 3095-3107, 2021, DOI:10.32604/cmc.2021.019363

    Abstract COVID-19 was first reported in China and quickly spread throughout the world. Weak investor confidence in government efforts to control the pandemic seriously affected global financial markets. This study investigated chaos in China’s futures market during COVID-19, focusing on the degree of chaos at different periods during the pandemic. We constructed a phase diagram to observe the attractor trajectory of index futures (IFs). During the COVID-19 outbreak, overall chaos in China’s futures market was increasing, and there was a clear correlation between market volatility and the macroenvironment (mainly government regulation). The Hurst index, calculated by rescaled range (R/S) analysis, was… More >

  • Open Access

    ARTICLE

    A Study on Genotype-by-Environment Interaction Analysis for Agronomic Traits of Maize Genotypes Across Huang-Huai-Hai Region in China

    Haiwang Yue1, Jianwei Wei1, Junliang Xie1, Shuping Chen1, Haicheng Peng1, Hongmei Cao2, Junzhou Bu1,*, Xuwen Jiang3,*

    Phyton-International Journal of Experimental Botany, Vol.91, No.1, pp. 57-81, 2022, DOI:10.32604/phyton.2022.017308

    Abstract Facing the trend of increasing population, how to increase maize grain yield is a very important issue to ensure food security. In this study, 28 nationally approved maize hybrids were evaluated across 24 different climatic conditions for two consecutive years (2018–2019). The purpose of this study was to select high-yield with stable genotypes and identify important agronomic traits for maize breeding program improvement. The results of this study showed that the genotype ╳ environment interaction effects of the 12 evaluated agronomic traits was highly significant (P < 0.001). We introduced a novel multi-trait genotype-ideotype distance index (MGIDI) to select genotypes… More >

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