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Xiao‐Zhen Li,Yi ZOU,Hai-Yan YANG,Hai-Jun XIAO,Jian-Guo WANG 한국곤충학회 2017 Entomological Research Vol.47 No.5
Growth of brown planthopper (BPH) (Nilaparvata lugens Stål) in rice paddies is mainly driven by meteorological factors under similar management practices. By analyzing field investigation and meteorological data collected from 2008 to 2013 in Nanchang, China, we show that BPH population densities and monthly growth rates (BGR) changed greatly from May to October, and these changes were closely associated with meteorological factors. Stepwise regression and path analysis indicated average speed of winds (AW) in June and lowest temperature (LT) in July were the first factors entering analysis, which interpreted 46.20% and 31.90% of their influences on BGR. While highest temperature (HT) in August and average temperature (AT) in September were the most important factors affecting BGR, but their direct path coefficients were all smaller than their corresponding indirect path coefficients. In October, relative humidity (RH), AW and number of raining days (RD) had significant effects on BGR. According to the sum of each meteorological factor entering stepwise regression analysis sequences, we found AW had the utmost effect on BPH growth, followed by AT and RH, but LT and RD least. The work demonstrate dynamic meteorological factors driving BPH growth and outbreak in rice paddies, which would facilitate the development of durable approaches for forecasting and controlling this destructive rice pest.
Xiao-Chuan WANG,Chun-Yan WANG,Hyung-Ho KIM 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.11
The goal of this study is to examine the characteristics of Chinese visitors visiting Thailand, determine the rules, and give a reference for Thai tourism authorities and businesses when developing marketing strategies for the Chinese market. This paper constructs the tourism flow network and takes Bangkok as the major research target. The statistical characteristics of the network are studied using the SNA method, based on the trip notes of Thailand on www.mafengwo.cn, a prominent travel website in China as the data source. The results show that: Shanghai, Beijing, and Tianjin occupy important positions in the network; The flow direction of Chinese tourists to Thailand mainly tends to Bangkok, Chiang Mai, Pattaya, and Phuket Island; Grand Palace have strong tourism flow aggregation, diffusion, and control over other nodes in the whole network structure; Tom Yu Kuang has the greatest degree centrality in all Thai cuisine. The findings of the study can help relevant management departments create tourist policies and modify market strategies by developing the regular characteristics of China’s tourism flow to Thailand in the theoretical field.
Cinnamaldehyde Derivatives Inhibit Coxsackievirus B3-Induced Viral Myocarditis
( Xiao-qiang Li ),( Xiao-xiao Liu ),( Xue-ying Wang ),( Yan-hua Xie ),( Qian Yang ),( Xin-xin Liu ),( Yuan-yuan Ding ),( Wei Cao ),( Si-wang Wang ) 한국응용약물학회 2017 Biomolecules & Therapeutics(구 응용약물학회지) Vol.25 No.3
The chemical property of cinnamaldehyde is unstable in vivo, although early experiments have shown its obvious therapeutic effects on viral myocarditis (VMC). To overcome this problem, we used cinnamaldehyde as a leading compound to synthesize derivatives. Five derivatives of cinnamaldehyde were synthesized: 4-methylcinnamaldehyde (1), 4-chlorocinnamaldehyde (2), 4-methoxycinnamaldehyde (3), α-bromo-4-methylcinnamaldehyde (4), and α-bromo-4-chlorocinnamaldehyde (5). Neonatal rat cardiomyocytes and HeLa cells infected by coxsackievirus B3 (CVB3) were used to evaluate their antiviral and cytotoxic effects. In vivo BALB/c mice were infected with CVB3 for establishing VMC models. Among the derivatives, compound 4 and 5 inhibited the CVB3 in HeLa cells with the half-maximal inhibitory concentrations values of 11.38 ± 2.22 μM and 2.12 ± 0.37 μM, respectively. The 50% toxic concentrations of compound 4 and 5-treated cells were 39-fold and 87-fold higher than in the cinnamaldehyde group. Compound 4 and 5 effectively reduced the viral titers and cardiac pathological changes in a dose-dependent manner. In addition, compound 4 and 5 significantly inhibited the secretion, mRNA and protein expressions of inflammatory cytokines TNF-α, IL-1β and IL-6 in CVB3-infected cardiomyocytes, indicating that brominated cinnamaldehyde not only improved the anti-vital activities for VMC, but also had potent anti-inflammatory effects in cardiomyocytes induced by CVB3.
Yan Xiao,Huijun Cheng,Li Wang,Xiao Yu 대한부인종양학회 2020 Journal of Gynecologic Oncology Vol.31 No.1
Objective: To observe the safety and short-term efficacy of apatinib in the treatment of recurrent, metastatic cervical cancer in patients who have already received more than two kinds of comprehensive treatment. Methods: Forty-eight patients with recurrent or metastatic cervical cancer after radiotherapy or surgery who received apatinib between June 2016 and June 2017 were involved in this study. These patients experienced progression after first-line or second-line chemotherapy. There were 38 patients with cervical squamous cell carcinoma, 8 with adenocarcinoma, and 2 with adenosquamous carcinoma. Progression-free survival (PFS), overall survival (OS), and treatment-related adverse events (AEs) were reviewed and evaluated. Results: All patients had complete follow-up records, and the median follow-up time was 14.5 months (5.5–20.5 months). Among the 48 patients, 14.58% achieved a partial response and 52.08% achieved stable disease. The overall response rate and disease control rate were 14.58% and 66.67%, respectively. The median time that the 48 patients received oral apatinib was 8.2 months. The median PFS was 4.6 months (95% confidence interval [CI]=3.31–5.26) and OS was 13.9 months (95% CI=8.37–17.96). The main apatinib-related adverse reactions were leukopenia (37.5%), neutropenia (41.67%), hemorrhage (37.5%), hypertension (33.33%), proteinuria (12.5%), fatigue (37.5%), and hand-foot syndrome (27.08%). Most of them were grade 1–2, and no drug-related death occurred. Conclusions: Apatinib can improve the disease control rate of recurrent and metastatic cervical cancer when chemotherapy has failed, and the treatment is well tolerated. This represents that apatinib may be a new treatment option for metastatic cervical cancer patients.
DFT Analysis of the Adsorption of Methyl Nitrate on Al2O3 Surfaces
Yan-qun Wang,Xiu-fen Yan,Wei Xiao,You-xiang Shao 대한화학회 2017 Bulletin of the Korean Chemical Society Vol.38 No.6
The adsorption of the energetic molecule methyl nitrate (CH3ONO2) on α-Al2O3(0001) and γ-Al2O3(110) surfaces was investigated using first-principles calculations based on density functional theory and the generalized gradient approximation. We found that CH3ONO2 approaches the two surfaces by either the oxygen connected with carbon atom or an oxygen atom of the nitro group; however, the former interaction is more stable. If CH3ONO2 approaches the surface through the oxygen atom of the nitro group, the adsorption is non-dissociative; while it is nearly dissociative if CH3ONO2 adsorbs on the surface via the oxygen connected with carbon atom and a surface tri-coordinated Al atom. Moreover, the dissociation trend on the γ-Al2O3(110) surface is more pronounced. In addition, the adsorption of CH3ONO2 on the γ-Al2O3(110) surface is more favorable. Finally, although strong interactions exist between CH3ONO2 and the surfaces, the structures of the alumina films are not affected by the adsorption of CH3ONO2.
Wang, Xiaojing,Wang, Yanfeng,Zheng, Xu,Hao, Xiyan,Liang, Yan,Wu, Manlin,Wang, Xiao,Wang, Zhigang Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.12
Ras homolog enriched in brain (Rheb) and FK506 binding protein 38 (FKBP38) are two important regulatory proteins in the mammalian target of rapamycin (mTOR) pathway. There are contradictory data on the interaction between Rheb and FKBP38 in human cells, but this association has not been examined in cashmere goat cells. To investigate the interaction between Rheb and FKBP38, we overexpressed goat Rheb and FKBP38 in goat fetal fibroblasts, extracted whole proteins, and performed coimmunoprecipitation to detect them by western blot. We found Rheb binds directly to FKBP38. Then, we constructed bait vectors (pGBKT7-Rheb/FKBP38) and prey vectors (pGADT7-Rheb/FKBP38), and examined their interaction by yeast two-hybrid assay. Their direct interaction was observed, regardless of which plasmid served as the prey or bait vector. These results indicate that the 2 proteins interact directly in vivo. Novel evidence is presented on the mTOR signal pathway in Cashmere goat cells.
Wang, Yan,Xiao, Li-Hua,Zhao, Xiao-Ling,Liu, Yi-Ping,Zhu, Qing Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.8
CRBP1 (cellular retinol binding protein 1) and CRBP3 (cellular retinol binding protein 3), are important components of the retinoid signaling pathway and take part in vitamin A absorption, transport and metabolism. Based on the role of vitamin A in chicken laying performance, we investigated the polymorphism of CRBP1 and CRBP3 genes in 349 chickens using single strand conformation polymorphism and DNA sequencing methods. Only one polymorphism was identified in the third intron of CRBP1, two polymorphisms were detected in CRBP3; they were located in the second intron and the third intron respectively. The association studies between these three SNPs and laying performance traits were performed in Erlang mountainous chicken. Notably, the SNP g.14604G>T of CRBP1 was shown to be significantly associated with body weight at first egg (BWFE), age at first egg (AFE), weight at first egg (WFE) and total number of eggs with 300 age (EN). The CRBP3 polymorphism g.934C>G was associated with AFE, and the g.1324A>G was associated with AFE and BWFE, but none of these polymorphisms were associated with egg quality traits. Haplotype combinations constructed on these two SNPs of CRBP3 gene were associated with BWFE and AFE. In particular, diplotype H2H2 had positive effect on AFE, BWFE, EN, and average egg-laying interval. We herein describe for the first time basic research on the polymorphism of chicken CRBP1 and CRBP3 genes that is predictive of genetic potential for laying performance in chicken.
Preprocessing and Edge Detection of Natural Images and Computer Generated Images
Yan Wang,Xiao Wang 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.5
Digital image tamper detection by analyzing the statistical properties of the image content of the authenticity of the digital image, the scene authenticity and integrity of authentication methods, namely determine whether the image is the original image, whether the image is real and whether it contains other secret information image, these techniques is the digital image forensics. Digital image forensics technology is dependent on the basis of the original carrier may be divided into active and passive two technologies forensics evidence. This paper generated image detection research for digital image forensics scene authenticity certification in natural images and computer. Combining the results of recent research, based on systematic analysis of the differences between two types of image generation, high-end features for wavelet conducted a detailed study of the effectiveness, from the validity of the characteristic data, proposed several general-purpose computer generating an image detection algorithm. Compared with the previous detection algorithm, strong stability of the proposed algorithm, computational complexity is low, and has easy implementation.