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Yanjie Guo,Weini Wu,Xiya Ma,Mingyan Shi,Xueyi Yang 한국유전학회 2019 Genes & Genomics Vol.41 No.6
Background Corneal epithelial cells (CECs) are required for corneal transparency and visual function, and corneal injuries may cause corneal blindness. Skin epidermal stem cells (SESCs), which share the same origin with CECs and have the potential of multi-directional differentiation are ideal seed cells for tissue engineered corneal construction to treat corneal blindness. Objective This study aims to investigate critical genes and pathways that may modulate the transdifferentiation from SESCs to CECs. Methods Isolated SESCs and CECs were used for gene expression analysis by microarray. GO and KEGG pathway of differently expressed genes (DEGs) were enriched using DAVID. The protein–protein interaction (PPI) network were then constructed using Cytoscape and highly interconnected module was subsequently isolated from the network by Molecular Complex Detection. Expression of the hub genes and other selected genes were then verified by qRT-PCR. Results We found 112 upregulated and 105 downregulated genes in CECs compared with SESCs. These DEGs were significantly enriched in focal adhesion, PI3K–Akt and TNF signaling pathway. Highly interconnected module of PPI network contains ten genes. Further regulatory network of these genes showed that ESR1 and SLC2A4 were hub genes. Conclusion Our study identified gene expression in SESCs and CECs and suggested that several crucial genes and pathways may play critical roles in transdifferentiation from SESCs to CECs. It may help uncover molecular mechanisms and offer a foundation for promoting tissue-engineered cornea into clinical application.
Yanjie Tang,Jiandong Yin 대한수학회 2020 대한수학회보 Vol.57 No.1
The aim of this paper is to show that for the one-sided symbolic system, there exist an uncountable distributively chaotic set contained in the set of irregularly recurrent points and an uncountable distributively chaotic set in a sequence contained in the set of proper positive upper Banach density recurrent points.
Yanjie Zhang,Kyoungmin Noh,송욱 한국한의학연구원 2019 Integrative Medicine Research Vol.8 No.2
Background: This systematic review was performed to investigate the effects of Chinese herbal nedicine (CHM) on cognitive function and activity of daily living (ADL) in individuals with Alzheimer's disease. Methods: Five electronic databases (Medline, Embase, Cinahl, PsycArticles, and CNKI) were searched from inception to January 2019. Randomized controlled trials (RCTs) assessing the effect of CHM on cognition and activity of daily living in adults with Alzheimer's disease were included. We pooled the effects size using the Comprehensive Meta-Analysis Software. Cochrane risk of bias tool was used to evaluate the study quality. Results: Twenty-five RCTs (1855 individuals with AD) were included in this review. Overall findings of this meta-analysis indicated that CHM improved the cognitive function (SMD = 0.66, 95% CI [0.44, 0.89], I2 = 77.9%, p < 0.001) and ADL (SMD = 0.38, 95% CI [0.25, 0.49], I2 = 35.3%, p < 0.001) compared with conventional drugs. No publication biases were observed on both cognitive function and ADL. Conclusion: CHM may have potential effects for improving cognitive function and ADL for individuals with AD compared with conventional drug therapies. However, the evidence is limited because of high risk of bias of the included trials.
How Household Roles Influence Individuals’ Travel Mode Choice under Intra-household Interactions?
Yanjie Ji,Yang Liu,Qiyang Liu,Baohong He,Yu Cao 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.11
The household is usually an essential element for activity-based travel decision-making of individuals. From the perspective of household context, activities are often allocated to individuals based on their household roles, thereby affecting individuals’ travel behavior. By defining the household role using spatial-temporal constraints which are associated with individual activities and household activities, this paper investigates the travel mode choice of individuals considering the effect of different household roles. The descriptive statistics of the household roles and their corresponding travel mode choice are presented using the data from Kunming, China. The statistical results show that the modal splits between females and males perform a significant difference in the same household roles. Furthermore, the travel mode choice of females and males are estimated separately using multinomial logistic regression model. The results show that those who face more space-time constraints associated with household tasks are less willing to travel by car. While with the increase of commuting constraints, household heads, especially female-heads, tend to use car to meet the travel demands of household activity. Besides, individuals’ age, education level, the number of cars and bikes in household also have a significant impact on travel mode choices of individuals.
\boldmath$(\mathcal{V},\mathcal{W},\mathcal{Y},\mathcal{X})$-Gorenstein complexes
Yanjie Li,Renyu Zhao 대한수학회 2024 대한수학회지 Vol.61 No.3
Let $\mathcal{V}$, $\mathcal{W}$, $\mathcal{Y}$, $\mathcal{X}$ be four classes of left $R$-modules. The notion of $(\mathcal{V, W, Y, X})$-Gorenstein $R$-complexes is introduced, and it is shown that under certain mild technical assumptions on $\mathcal{V}$, $\mathcal{W}$, $\mathcal{Y}$, $\mathcal{X}$, an $R$-complex $\bm{M}$ is $(\mathcal{V, W, Y, X})$-Gorenstein if and only if the module in each degree of $\bm{M}$ is $(\mathcal{V, W, Y, X})$-Gorenstein and the total Hom complexs Hom$_R(\bm{Y},\bm{M})$, Hom$_R(\bm{M},\bm{X})$ are exact for any $\bm{Y}\in\widetilde{\mathcal{Y}}$ and any $\bm{X}\in\widetilde{\mathcal{X}}$. Many known results are recovered, and some new cases are also naturally generated.
Yanjie Zhang,Ruiqing Chu,Zhi-Jun Xu,Qian Chen,Yong Liu,Guangchao Zhang 한국물리학회 2012 Current Applied Physics Vol.12 No.1
(Bi0.5Na0.5)0.94Ba0.06TiO3 ceramics doped with Li2CO3 and Bi2O3 as sintering aids were manufactured, and their micro structural, dielectric and piezoelectric properties were investigated. All specimens could be well sintered at a low-temperature of 1080 ℃. The bulk density of the specimens doped with a small amount of Li2CO3 was enhanced. The dielectric and piezoelectric properties of ceramics were investigated with different amounts of Li2CO3 substitutions. High electrical properties of d33 ¼ 167 pC/N,kp ¼ 0.34, Pr ¼ 40 mC/cm2 and Ec ¼ 38 kV/cm were obtained from the specimen containing 0.1 mol% of Li2CO3 sintered at 1080 ℃.
Yanjie Ji,Pengming Fu,P.T. Blythe,W. Guo,Wei Wang 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.7
Parking Guidance and Information (PGI) System becomes highly favorable for reducing circulating traffic and making efficient use of existing parking facilities. This paper is to examine the factors influence drivers’ willingness to use PGI. Factor analysis and the Structure Equation Model (SEM) were used to identify the latent attitudinal factors and the sensitivity of the factors was judged by Bayesian network. The heterogeneity of the factors was explored based on driver’s gender, age, driving years, education and travel frequency. The results show that drivers’ willingness to use PGI is significantly correlated to five attitudinal factors: perception of existing PGIs, difficulty in parking, confidence in the accuracy of the information, easy acquisition of information and information attributes. Male drivers, younger drivers, novice drivers and drivers who travel less frequently have lower level of willingness to use PGI.
Yanjie Dong,Ke Gai 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.6
An effective spectrophotometric determination of palladium with 4-(2-pyridylazo)-resorcinol (PAR) using molten naphthalene as a diluent has been studied. A red complex of palladium with PAR is formed at 90 oC. In the range of pH 9.0-11.0, the complex is quantitatively extracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl3 to be determined spectrophotometrically at 520 nm against the reagent blank. Beer’s law is obeyed over the concentration range of 0.1-2 gámL1. The molar absorptivity and Sandell’s sensitivity are 8.0 × 105 Lámol1ácm1 and 0.49 gácm2 respectively. From the results of tolerance limits, it was found that there was no interferences were observed for most of the ions examined and those somewhat high interferences by Co(II), Fe(II) and Bi(III) could be effectively masked by EDTA.
Output Feedback Stabilization for a Class of Cascade Nonlinear ODEPDE Systems
Yanjie Chang,Tongjun Sun,Xianfu Zhang,Xiandong Chen 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.7
In this paper, the output feedback stabilization problem is studied for a class of cascade nonlinear ODEPDE systems. The nonlinear terms of ODE-subsystem are assumed to be bounded by a known constant multiplied by unmeasured states, and PDE-subsystem is a diffusion equation. Especially, the unstable diffusion equation is considered. Based on the low gain observer and a series of transformations, the output feedback stabilization problem is converted into designing proper gain parameters. Furthermore, the stability of the closed-loop system is analyzed by Lyapunov theorem. Finally, two numerical examples are given to demonstrate the effectiveness of the proposed control strategy.