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Kang Zhi‐Wei,Liu Fang‐Hua,Xu Yong‐Yu,Cheng Jia‐Hui,Lin Xiao‐Li,Jing Xiang‐Feng,Tian Hong‐Gang,Liu Tong‐Xian 한국곤충학회 2021 Entomological Research Vol.51 No.1
Odorant‐degrading enzymes (ODEs) have been found in insect antennae and play a critical role in signal chemical degradation once the message is conveyed. Significant progress has been made in characterizing ODEs in a variety of pests but very little is known in their natural enemies. We have carried out an antennae‐ and sex‐specific transcriptome of Aphidius gifuensis, a natural enemy of aphid, to identify the candidate ODEs. Based on the antennae‐ and sex‐specific transcriptome, a total of 100 putative ODEs were identified including one aldehyde oxidase (AOX), four alcohol dehydrogenases (ADs), eight UDP‐glucuronosyltransferases (UGTs), 45 cytochrome P450 (P450s), nine glutathione S‐transferases (GSTs) and 40 carboxylesterases (CCEs or CXEs). Additionally, we used RT‐qPCR to determine the expression profiles of these genes in tissues of both sexes. Based on the phylogenic analysis and tissue‐expression patterns, AgifEstE4, AgifCXE3, AgifCCE4, AgifCCE7, and AgifCCE18 were suggested as key ODEs in A. gifuensis. In addition, the female or male specifically enriched genes, such as AgifCCE17, AgifEstB1, AgifCYP18a1, AgifUGT2C2, were also considered to involve in the chemosensory processing in A. gifuensis. This study not only identified the candidate ODEs in A. gifuensis but also provided source for further exploration of the molecular mechanisms of chemical signal transductions in A. gifuensis, as well as other hymenopteran species.
Multiple Smooth Support Vector Machine with FCM Clustering in Hidden Space
Xian-wei Zhang,Jinjin Liang 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.9
A multiple smooth model is proposed by smoothing technique and piecewise technique for large scale data. Mapping the training data to the hidden space with a hidden function, the proposed model divides the original data into several subclasses by Fuzzy C Means (FCM), whose initial cluster centers are selected by samples with large density indexes; derives the smooth differentiable model by utilizing the entropy function to replace the plus function of the slack vector, and introduces linking rules to combine results of subclasses. Simulations demonstrate that the obtained algorithm maintains good classification accuracies, reduces the training time and hardly varies with kernel parameters.
TGF-β-activated Kinase-1: A Potential Prognostic Marker for Clear Cell Renal Cell Carcinoma
Wei, Can,Lai, Yong-Qing,Li, Xian-Xin,Ye, Jiong-Xian Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.1
Background: TGF-${\beta}$-activated kinase-1 (TAK1) has been found to be over-expressed in a variety of solid malignancies and related to tumor growth. The aim of this study was to evaluate the expression level of TAK1 in clear cell renal cell carcinoma (ccRCC) and assess its value as a novel prognostic marker. Methods: TAK1 mRNA was assessed in 51 paired ccRCC tissues and adjacent normal tissues (ADTs) by real-time PCR. Tissue TAK1 protein was also assessed in 91 ADTs and 177 samples of ccRCC immunohistochemically for evaluation of relationships with clinical characteristics. Results: RT-PCR showed that TAK1 RNA level was significantly higher in ccRCC tissues than in the paired ADTs and immunohistochemistry confirmed higher expression of TAK1 protein in ccRCC samples compared with ADTs. TAK1 protein expression in 177 ccRCC samples was significantly correlated with T stage, N classification, metastasis, recurrence and Fuhrman grade, but not age and gender. Patients with low TAK1 levels had a better survival outcome. TAK1 expression and N stage were independent prognosis factors for the overall survival of ccRCC patients. Conclusions: Overexpression of TAK1 predicts a poor prognosis in patients with ccRCC, so that TAK1 may serve as a novel prognostic marker.
내부통제와 감사품질이 기업의 투자효율성에 미치는 영향 - 중국 상장기업을 중심으로
웨이셴롄(Xian-Lian Wei),백강(Kang Baek) 한국FP학회 2024 Financial Planning Review Vol.17 No.3
본 논문은 중국 상장기업을 대상으로 실증 분석을 통해 고품질 회계감사와 내부통제가 기업의 투자효율성을 높일 수 있음을 발견하였다. 특히, 감사품질은 내부통제를 매개 변수로 기업의 투자효율성을 높일 수 있음을 검증했다는 점에서 선행연구와 차별화될 수 있다. 감사품질의 향상은 기업의 내부통제를 강화할 수 있으며 기업 내부통제 시스템을 통해 잠재적인 위험을 발견하고 개선할 수 있다. 이를 통해 기업은 내부통제 시스템을 완성하고 위험관리 및 내부감독을 강화하며 자원분배 및 투자의사결정의 효율성을 높일 수 있다. 본 논문은 기업지배구조를 통해 투자효율성을 개선하려는 시도 중에서 감사품질의 역할을 강조하였다. 기업은 재무보고의 신뢰성과 투명성을 보장하기 위해 감사품질에 지속적으로 투자하고 개선하여 내부통제의 효율성을 높여야 한다. 우수한 감사품질은 단기적으로 투자효율성을 향상시킬 뿐만 아니라, 장기적으로 기업의 지속가능성을 높일 것이다. 다만, 중국은 여전히 감사품질을 정량적으로 평가할 수 있는 지표 및 시스템 구축이 빈약하기 때문에, 본 논문에서 감사품질 지표를 선택하는 데 한계가 있었다. 이러한 문제를 극복하기 위해서는 향후 산․학․연․정의 연구자들이 투자자들의 눈높이에 부합하는 정량적 평가시스템을 개발하기 위해 노력해야 할 것이다. This paper presents an empirical analysis of listed companies in China, showing that high-quality auditing and internal control can enhance corporate investment efficiency. In particular, it differentiates itself from previous studies by verifying that audit quality can improve the investment efficiency by mediating the impact of internal control. Improving the audit quality can strengthen the internal control of a company, allowing potential risks to be identified and mitigated through the internal control system. Consequently, companies can refine their internal control systems, reinforce risk management and internal supervision, and improve the efficiency of resource allocation and investment decision-making. Furthermore, this paper emphasizes the role of audit quality in improving investment efficiency through corporate governance. Companies must continuously invest in and improve the audit quality to ensure the reliability and transparency of financial reporting, enhancing the effectiveness of internal controls. Superior audit quality enhances investment efficiency in the short term and improves the long-term sustainability of companies. On the other hand, China still lacks robust indicators and systems for quantitatively evaluating the audit quality, which limits the selection of audit quality indicators in this study. To overcome this issue, future collaboration among industry, academia, research institutions, and government is necessary to develop quantitative evaluation systems that meet the investors expectations.
Different Morphology of Hydroxyapatite Coatings on Titanium by Electrophoretic Deposition
Meng, Xian Wei,Kwon, Tae Yub,Kim, Kyo Han Trans Tech Publications, Ltd. 2006 Key Engineering Materials Vol.309 No.-
<P>Commercial hydroxyapatite powders were electrophoretically deposited on titanium substrates. In this study, the effect of deposition durations and applied voltages on deposition yield was investigated. Green and sintered coatings were studied by SEM and XRD. It was observed that by applying low voltages and presedimentation, uniform and smooth hydroxyapatite coating can be prepared. In order to obtain roughened hydroxyapatite coatings, high voltages have to be applied. It was concluded that experimental conditions of powder concentration, applied potential, and presedimentation have a significant effect on the deposited coating morphology.</P>
Challenges and Advances in Materials and Fabrication Technologies of Small-Diameter Vascular Grafts
Mei‑Xian Li,Qian‑Qi Wei,Hui‑Lin Mo,Yu Ren,Wei Zhang,Huan‑Jun Lu,정윤기 한국생체재료학회 2023 생체재료학회지 Vol.27 No.00
The arterial occlusive disease is one of the leading causes of cardiovascular diseases, often requiring revascularization. Lack of suitable small-diameter vascular grafts (SDVGs), infection, thrombosis, and intimal hyperplasia associated with synthetic vascular grafts lead to a low success rate of SDVGs (< 6 mm) transplantation in the clinical treatment of cardiovascular diseases. The development of fabrication technology along with vascular tissue engineering and regenerative medicine technology allows biological tissue-engineered vascular grafts to become living grafts, which can integrate, remodel, and repair the host vessels as well as respond to the surrounding mechanical and biochemical stimuli. Hence, they potentially alleviate the shortage of existing vascular grafts. This paper evaluates the current advanced fabrication technologies for SDVGs, including electrospinning, molding, 3D printing, decellularization, and so on. Various characteristics of synthetic polymers and surface modification methods are also introduced. In addition, it also provides interdisciplinary insights into the future of small-diameter prostheses and discusses vital factors and perspectives for developing such prostheses in clinical applications. We propose that the performance of SDVGs can be improved by integrating various technologies in the near future.
Bioinformatics Analysis Reveals Connection of Squamous Cell Carcinoma and Adenocarcinoma of the Lung
Fan, Wei-Dong,Zhang, Xian-Quan,Guo, Hui-Lin,Zeng, Wei-Wei,Zhang, Ni,Wan, Qian-Qian,Xie, Wen-Yao,Cao, Jin,Xu, Chang-Hua Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.4
Squamous cell carcinoma and adenocarcinoma are the major histological types of non-small cell lung cancer. Because they differ on the basis of histopathological and clinical characteristics and their relationship with smoking, their etiologies may be different; for example, different tumor suppressor genes may be related to the genesis of each type. We used microarray data to construct three regulatory networks to identify potential genes related to lung adenocarcinoma and squamous cell carcinoma and investigated the similarity and specificity of them. In the network, some of the observed transcription factors and target genes had been previously proven to be related to lung adenocarcinoma and squamous cell carcinoma. We also found some new transcription factors and target genes related to SCC. The results demonstrated that regulatory network analysis is useful in connection analysis between lung adenocarcinoma and squamous cell carcinoma.