Neo-Chinese Style Furniture Design Based on Semantic Analysis and Connection

Jialei Ye,Jiahao Zhang,Liqian Gao,Yang Zhou,Zi Yang Liu,Jianguo Han 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.8

Lately, neo-Chinese style furniture has been frequently noticed by product design professionals for the big part it played in promoting traditional Chinese culture. This article is an attempt to use big data semantic analysis method to provide effective design research method for neo-Chinese furniture design. By using big data mining program TEXTOM for big data collection and analysis, the data obtained from typical websites in a set time period will be sorted and analyzed. On the basis of "neo-Chinese furniture" samples, key data will be compared, classification analysis of overall data, and horizontal analysis of typical data will be performed by the methods of word frequency analysis, connection centrality analysis, and TF-IDF analysis. And we tried to summarize according to the related views and theories of the design. The research results show that the results of data analysis are close to the relevant definitions of design. The core high-frequency vocabulary obtained under data analysis, such as popular, furniture, modern, etc., can provide a reasonable and effective focus of attention for the designs. The result obtained through the systematic sorting and summary of the data can be a reliable guidance in the direction of our design. This research attempted to introduce related big data mining semantic analysis methods into the product design industry, to supply scientific and objective data and channels for studies on design, and to provide a case on the practical application of big data analysis in the industry.

Identification of odorant binding protein and chemosensory protein genes in Protegira songi (Lepidoptera Noctuidae) via transcriptome analysis

Huang Xingrui,Yang Jie,Zou Jie,Wen Xi,Wu Tao,Tian Xiangrong,Luo Jiahao,Niu Yahui,Huang Xinglong 한국응용곤충학회 2024 Journal of Asia-Pacific Entomology Vol.27 No.2

The larvae of Protegira songi Chen & Zhang are notorious defoliator specifically infesting the medicinal plant Eucommia ulmoides Oliver. In insects, Odorant binding proteins (OBPs) and chemosensory proteins (CSPs) are highly expressed in olfactory organs and play essential roles in perceiving female pheromone and host volatiles by binding and transporting odorant compounds. In this study, 17 OBPs and 16 CSPs were identified from P. songi by transcriptome analysis. Sequence alignment indicated that PsonOBPs and PsonCSPs share no identity with each other in protein sequence. The overall structures of PsonOBPs and PsonCSPs are mainly constructed by α-helix bundles and loops. But the distribution of conserved cysteine residues and arrangement of α-helix are varied between PsonOBPs and PsonCSPs. Putative ligand binding cavities were found in these predicted protein structures. Expression profiles of PsonOBPs and PsonCSPs in adults and larvae were determined by RT-PCR which showed that 16 PsonOBPs and 11 PsonCSPs were expressed in adult antennae or/and larval head. PsonGOBPs, PsonPBPs, PsonOBP5, PsonOBP7, and PsonCSP6 were preferentially expressed in olfactory associ ated tissues. Our results suggest that the PsonOBPs and PsonCSPs that contain ligand cavity and are highly enriched in olfactory tissues may play roles in chemosensory perception of P. songi, and the transcriptome data may facilitate the studies on the olfactory mechanism of P. songi specifically choosing E. ulmoides as host.

Effect of anion species on preparation and properties of pitch-based activated carbon fibers by in-situ catalytic activation of metal nanoparticles

Gou Genchang,Wei Wenjie,Yang Jianxiao,Liu Jiahao,Liu Yue,Li Jun,Shi Kui 한국탄소학회 2022 Carbon Letters Vol.32 No.6

The pitch-based activated carbon fibers (ACFs) were prepared from ethylene tar-derived pitches containing nickelocene (CNi) or nickel nitrate (NiN). The effects of different anions and contents of metal salts on the microstructure and surface chemical properties of fibers were investigated. The results revealed that Ni2+ from CNi mainly remained its pristine molecule in the organometal salt-derived pitch (OP-xCNi), while Ni2+ from NiN occurred complexation reaction with polycyclic aromatic hydrocarbons (PAHs) in the inorganic metal salt-derived pitch (IP-xNiN) due to the weaker binding ability between anions and Ni2+ of CNi than CNi. The XRD and SEM results confirmed that IP-3NiN-ACF contained Ni, NiO, Ni2O3 nanoparticles with different size distributions, while OP-3CNi-ACF only contained more uniformly distributed Ni nanoparticles with small size. Furthermore, OP-3.0CNi-ACF presented higher specific surface area of 1862 m2/g and a pore volume of 1.69 cm3/g than those of IP-3.0NiN-ACF due to the formation of pore structure during the in-situ catalytic activation of different metal nanoparticles. Therefore, this work further pointed out that the desired pore structure and surface chemistry of pitch-based ACFs could be obtained through regulating and controlling the interaction of anion species, metal cations and PAHs during the synthesis of pitch precursors.

Critical Parameter Design and Power Quality Optimization of Two-Stage Isolated Inverter Power Supply Based on Series Resonance

Wang Dangshu,Liu Mingyao,Zhang Ruchuan,Yang Jiahao,Wang Jing 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.5

In order to address the issues of low effi ciency, large size, and low output power quality in the two-stage inverter power supply, this paper focuses on the series-resonant push–pull converter and conducts an in-depth analysis of its diff erent operating modes. Two critical operating modes of the converter are identifi ed, and optimal parameter designs for the resonant components under diff erent critical operating modes are derived through time-domain analysis. The reasons and consequences of the double-frequency ripple voltage on the two-stage circuit bus are analyzed, and a modulation wave reconstruction nonlinear feedforward control strategy is proposed to real-time correct the modulation signal and reduce the impact of bus ripple voltage on the output power quality. Finally, simulation models and experimental platforms are built to validate the correctness of the theory. The experimental prototype is designed to operate in the second critical mode, and the results show that the proposed scheme can enhance the peak effi ciency of the power supply by 5%, reduce the volume by 40%, and decrease the output voltage total harmonic distortion (THD) by 0.56%, eff ectively improving the effi ciency and output power quality of the inverter power supply.

Ozone infusiblization and curing mechanism of polysilazane ceramic precursor fibers

Li Xiaohong,Luo Xiaoyu,Li Jing,Li Jinxia,Yang Jiahao,Ahmad Zahoor,Bao Zhihao,Zhang Xiao,Chen Jianjun 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.5

An appropriate infusible method plays a vital role as one of the key processes of the fabrication of polymer-derived ceramic fibers. In this work, ozone curing, a novel room temperature controllable curing strategy was used to prepare SiCN ceramic fibers. Some circular pores were observed on the surface of the obtained SiCN ceramic fibers. The tensile strength of the fibers was also investigated. To reveal the ozone-curing mechanisms of the PSZ fibers and the formation process of the circular pores, the FT-IR, SEM, OM, XRD and TG were characterized. The results showed that the Si–H bonds and Si-CH3 groups in the PSZ molecule were oxidized gradually to form oxygen-containing groups such as Si–OH, Si–O-Si and C = O in the ozone curing process, which contributed to the curing and weight gain of the PSZ fibers. Moreover, a hydrolysis reaction between Si-NH-Si and H2O might further accelerate the curing of the PSZ fibers. An unexpected result of the hydrolysis reaction is the formation of some circular pores on the surface layer of the PSZ fibers. This strategy provides a method to design, adjust and control the microstructure and composition of silicon-based ceramic fibers, and the obtained SiCN fibers may be used as catalyst support, bacterial culture and other fields.