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Cao Zhishan,Cao Jinjun,Vlasenko Volodymyr,Wang Xinfa,Li Weihai 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.2
Beauveria bassiana is an entomopathogenic fungus with wide host range and is an important biocontrol agent against the oriental fruit moth Grapholitha molesta (Busck) (Lepidoptera: Tortricidae), a key pest of tree fruits worldwide. However, the molecular mechanisms involved in the interactions between G. molesta and B. bassiana is poorly understood. Herein, high throughput sequencing technology, the Illumina RNA-seq platform was used to analyze the transcriptome of G. molesta larvae induced by B. bassiana. De novo assembly generated 48,980 unigenes and the mean length is 1,226 nt. All of the unigenes were searched against Nt, Nr, GO, KOG databases, and 23,825 (46.64%) unigenes have been annotated in at least one database. Pairwise comparisons resulted in 1,755 differentially expressed genes (DEGs), with 965 up-regulated and 790 down-regulated. We further explored differentially expressed genes that are related to the infection of B. bassiana to G. molesta, especially the up-regulated ones. The potential immune-related genes were identified based on sequence similarity to homologs known to participate in immune response, and their expression was further verified by qRT-PCR. This is the first study on the molecular mechanism of entomopathogenic fungi-G. molesta interactions. The obtained data also provide insights for better understanding the molecular mechanisms of innate immune responses in G. molesta larvae against B. bassiana.
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Kaicheng Ding,Yan Zhang,Jinjun Liu,Rui Cao,Yuetao Hou,Xin Meng 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
In this paper, a boost type Power Factor Corrector is proposed to deal with the inherent issue of double line frequency power ripple, namely power coupling, in single-phase AC/DC conversion systems. The proposed converter is embedded with an active buffer circuit and the redundant capacitor and power switches enable active power decoupling and an all-film-capacitor implementation. The active power decoupling control scheme in this paper is based on the direct control of ac power and dc power and is therefore relatively easy to implement. The former one helps to achieve unit power factor at ac side while the latter one helps to regulate dc side output voltage and as a result the double line frequency power ripple could be automatically transferred onto the buffer capacitor of the converter. Theoretical analysis, simulation and experiment results are provided in the paper.
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Xie, Shuai,Ji, Zhijiang,Zhang, Jinjun,Cao, Yanxin,Wang, Jing Techno-Press 2021 Composite materials and engineering Vol.3 No.2
In order to develop a lightweight cement based composite with dual-function of EM wave absorption and thermal insulation, sandwich structure was designed to achieve excellent EM absorption capacity, and expanded perlite and carbon black were used as lightweight aggregates and EM absorbent, respectively. The EM absorption properties were studied by arching reflected method, and the results indicate that the sandwich structure design can obviously enhance the EM absorption capacity of cement composites. The sandwich structured composites exhibit better EM absorption properties than the traditional gradient multi-layer structured composites. The reflection loss of three-layer and four-layer sandwich structured composites can be less than -10 dB and -15 dB in the whole X-band. The thermal conductivity test results shows that the developed cement composites possess thermal insulation function.
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