Preparation and photocatalytic activity of a novel BiOCl/g‑C3N4 thin film prepared via spin coating

Wei‑Qin Cai,De‑Fang Zhang,Feng‑Jun Zhang,Won‑Chun Oh 한국세라믹학회 2020 한국세라믹학회지 Vol.57 No.3

Novel BiOCl/g-C3N4 thin film photocatalysts were synthesized via a simple two-step spin coating method. The prepared photocatalysts were characterized by X-ray diffraction, scanning electron microscopy, and ultraviolet–visible spectroscopy. The photocatalytic activity of the thin films for the degradation of rhodamine B under visible light (λ ≥ 400 nm) was investigated. The results showed that the BiOCl/g-C3N4 thin film photocatalysts exhibited significantly improved visible light absorption compared to the pure BiOCl thin film. The BiOCl/g-C3N4 film showed a rhodamine B degradation efficiency of 81.0% under visible light, which is 23.8 times higher than that of the pure BiOCl thin film. This excellent photocatalytic activity of the BiOCl/g-C3N4 film can be attributed to its efficient electron–hole separation due to the presence of g-C3N4.

Health-related Quality of Life After Treatment for Malignant Bone Tumors: A Follow-up Study in China

Sun, Yong-Jian,Hu, Yan-Jun,Jin, Dan,Li, Jian-Wei,Yu, Bin Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.7

Aim: We conducted the present study to assess health-related quality of life (HRQoL) among bone cancer patients after surgical treatment in one large teaching hospitals in China, and assess the risk factors for improving the physical or mental HRQoL. Methods: 344 eligible adult patients who were admitted to the hospital with malignant bone tumors during the period of Jun. 2008 to Dec. 2011, and a reference group with 361 health cases was recruited in the same hospital during the same period. All 344 patients were followed up for one year. The HRQoL before treatment and after one year was evaluated with the Medical Outcome Short Form 36 (SF-36). Results: All 8 domains of HRQoL had the lowest scores greatly improved over the first year after discharge. However, the patients still had significantly lower scores in every domain than the reference group one year after discharge. Age and type of surgery were associated with HRQoL in the mental domain. Conclusion: The HRQoL of patients with malignant bone tumors greatly improved one year after the treatment. This study also highlighted the utility of HRQoL assessment for prognostic evaluation of patients after surgical treatment for bone cancer.

RanBPM inhibits BLT2-mediated IL-8 production and invasiveness in aggressive breast cancer cells

Wei, Jun-Dong,Jang, Jae-Hyun,Kim, Jae-Hong Academic Press 2017 Biochemical and biophysical research communication Vol. No.

<P><B>Abstract</B></P> <P>RanBPM is a scaffolding protein that regulates several cellular processes by interacting with various proteins. Previously, we reported that RanBPM acts as a negative regulator of BLT2, a low-affinity leukotriene B<SUB>4</SUB> receptor; thus, it interferes with BLT2-mediated cell motility. In the present study, we observed that the expression levels of RanBPM were markedly reduced in the highly aggressive MDA-MB-435 and MDA-MB-231 human breast cancer cell lines compared with those in non-invasive MCF-7 cells. Additionally, we found that the restoration of RanBPM levels suppressed the invasiveness of these aggressive breast cancer cells in a manner dependent on BLT2 activation. In contrast, the knockdown of endogenous RanBPM by shRNA strongly promoted invasiveness in non-invasive MCF-7 cells. We also observed that RanBPM suppressed the invasiveness of aggressive breast cancer cells by inhibiting BLT2-mediated reactive oxygen species (ROS) generation and IL-8 production. Taken together, our results suggest that RanBPM acts as a negative regulator of BLT2, thus attenuating the invasiveness of aggressive breast cancer cells.</P> <P><B>Highlights</B></P> <P> <UL> <LI> RanBPM suppresses the invasiveness of aggressive breast cancer cells by inhibiting BLT2-mediated ROS generation and IL-8 production. </LI> <LI> The expression levels of RanBPM are reduced in the aggressive breast cancer cells. </LI> <LI> Restoration of RanBPM levels suppressed the invasiveness of aggressive breast cancer cells in a manner dependent on the LTB4-BLT2 axis. </LI> </UL> </P>

Influence of APP Quality on the Success of Mobile Health App in China : Evaluating Moderation Effects of Familiarity

Jun-Wei Cao,Gui-Hua Zhang,Dae-Wan Kim 한국디지털융합학회 2021 IJICTDC Vol.6 No.2

The service quality of mobile health apps is a crucial factor affecting users’ satisfaction. For analyzing the influence of service quality of mobile health apps on users’ satisfaction in China, a hypothetical model with three dimensions and eight variables was established. Then this hypothetical model was combined with the model of mobile health service quality and hypotheses were proposed based on the actual situations according to the updated D&M information system success (UMDISS) theory. Questionnaires were issued to collect data and the SEM-PLS method was used to valid the hypothetical model and hypotheses. The reliability and security of the system quality of mobile health apps positively impacted the users’ satisfaction. The cooperation and personalization of service quality had a significant impact on the users’ willingness to use mobile health apps. Through multi-group analyses, it was found that the relationship between mobile health app system quality, users’ satisfaction, and the use of mobile health apps differed under different familiarities with mobile health apps. This study is expected to provide theoretical guidance for the marketing of mobile health apps.

Prevalence of Spina Bifida Occulta and Its Relationship With Overactive Bladder in Middle-Aged and Elderly Chinese People

Jun Wei Wu,Yu Rong Xing,Yi Bo Wen,Tian Fang Li,Quan De Feng,Xiao Ping Shang,Yun Long Li,Jin Jin Feng,Xin Xin Wang,Rong Qun Zhai,Xiang Fei He,Tao Chen,Xin Jian Liu,Jian Guo Wen 대한배뇨장애요실금학회 2016 International Neurourology Journal Vol.20 No.2

Purpose: To investigate the prevalence of spina bifida occulta (SBO) and its relationship with the presence of overactive bladder (OAB) in middle-aged and elderly people in China. Methods: A cross-sectional community-based survey was carried out at 7 communities in Zhengzhou City, China from December 15, 2013 to June 10, 2014, where residents aged over 40 years were randomly selected to participate. All of the participants underwent lumbosacral radiographic analysis and relevant laboratory tests. A questionnaire including basic information, past medical history and present illness, and the OAB symptom score was filled out by all participants. Chi-square tests and logistic regression were used for data analysis with a P-value of <0.05 denoting statistical significance. Results: A total of 1,061 subjects were qualified for the final statistical analysis (58.8±11.7 years; male, 471 [44.4%]; female, 590 [55.6%]). The overall prevalence of SBO was 15.1% (160 of 1,061): 18.3% (86 of 471) in men and 12.5% (74 of 590) in women. Among these subjects, 13.7% (145 of 1,061) had OAB: 13.2% (62 of 471) in men and 14.1% (83 of 590) in women. The results of logistic regression showed that age, SBO, history of cerebral infarction (HCI), and constipation were risk factors for OAB (P<0.05), while sex, history of childhood enuresis (HCE), body mass index (BMI), and diabetes mellitus (DM) were not (P>0.05). In men, age, SBO, and constipation were risk factors for OAB (P<0.05), while HCE, BMI, DM, HCI, and benign prostate hyperplasia were not (P>0.05). In women, age, SBO, and HCI were risk factors for OAB (P<0.05), while HCE, BMI, DM, vaginal delivery, and constipation were not (P>0.05). Conclusions: The prevalence of SBO is high and it is related to OAB in middle-aged and elderly people in China.

A Novel Intermediate Estimator Based Secure Consensus Control for Multi-agent Systems with Application to Networked Multi-axis Motion Synchronization

Jun-Wei Zhu,Chao-Yang Liang,De-Feng He,Xin Wang 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.4

This paper studies the secure consensus control problem of multi-agent systems under DoS attacks onthe sensor, the actuator, and the communication topology. A resilient intermediate estimator based attack tolerantcontrol strategy is proposed. By fully exploiting the hardware redundancies, both of the estimators and the controlprotocols can be reconstructed online according to different DoS attack scenarios. Finally, the experiment results ofthe networked multi-axis motion control system are given to verify the effectiveness of the proposed method.

Isolation and characterization of a novel Ganoderma lucidum gene that differentially expressed between shaking culture and liquid static culture

Jun-Wei Xu,Wei Zhao,Jian-Jiang Zhong 한국유전학회 2011 Genes & Genomics Vol.33 No.6

Suppression subtractive hybridization (SSH) was preformed to investigate the differences of gene expression between the shaking culture mode and the liquid static culture mode which favors ganoderic acids production in Ganoderma lucidum. One novel gene preferentially expressed in liquid static culture was identified and analyzed. Its full length cDNA sequence and the 5'-flanking region were then obtained by rapid amplification of cDNA ends (RACE) and self-formed adaptor PCR (SEFA-PCR), respectively. Nucleotide sequence of the gene is not homologous to any of the known Ganoderma genes. The sequence analysis revealed that the open reading frame of this gene encodes a protein of 371 amino acids that has high homology with the mitogen-activated protein kinase (MAPK) of other five species-Postia (97%), Coprinopsis (91%), Neurospora (86%), Aspergillus (83%), and Saccharomyces (80%)-so that it can be defined as a G. lucidum MAPK gene (GenBank accession number: JF781125). Computer assisted analysis revealed that this new G. lucidum MAPK gene contains thirteen exons and twelve introns. The quantitative real-time RT-PCR (qRT-PCR) analysis showed that this new gene had a much higher expression level in liquid static culture than in traditional shaking culture. Results of this research established a good foundation for further study on the functions of the G. lucidum MAPK at the molecular level.

Naturally-Functional Myoelectric Prosthesis with Increased Lifespan

Jun Wei CHOW 국제과학영재학회 2017 APEC Youth Scientist Journal Vol.9 No.1

This study focused on researching new materials that could increase the lifespan with improvements on the sensors feedback and degree of freedom (DoF) of the prosthesis while retaining its lightweight. Titanium as the main material replacing plastics for support is the backbone of this research. Ultra-thin aluminium oxynitride will be used for extending the lifespan of the prosthesis. This study continues with discussion on the methods for increasing the number of the DoF for myoelectric prosthesis, which includes installation of various sensors for feedback from arm and implantation of nanoelectrodes directly onto the brain’s motor cortex and includes a powerful microprocessor for improve responses, setting up a feedback loop. It also discussed about the current technology on prosthesis and suggest

폴리락틱산/산화아연 기둥구조의 유기사포나이트 나노복합체의 특성, 구조 및 결정화

Wei Jun Zhen,Jin Lu Sun 한국고분자학회 2014 폴리머 Vol.38 No.3

ZnO pillared saponite was synthesized via a microwave hydrolysis method. To enhance interfacial compatibilitybetween zinc oxide (ZnO) pillared saponite and poly lactic acid (PLA), ZnO pillared organic saponite was preparedby intercalation modification of cetyltrimethylammonium bromide. Moreover, PLA/ZnO pillared organic saponitenanocomposites were prepared by melting processing. The microstructure analysis of PLA/ZnO pillared organic saponitenanocomposites showed that ZnO pillared organic saponite was exfoliated and homogeneouslydispersed in PLA matrix. The property results showed that ZnO pillared organic saponite improved the mechanical properties and thermal stabilitiesof PLA/ZnO pillared organic saponite nanocomposites. Differential scanning calorimetry (DSC) demonstrated that ZnOpillared organic saponite restrained the appearance of cold crystallization, lowered the glass transition temperature andmelting temperature of PLA, and improved the crystallinity of PLA. The results demonstrated that ZnO pillared organicsaponite had a good interfacial compatibility and heterogeneous nucleation effect in PLA matrix, and also played anactive role in accelerating the crystallization process of PLA.

Integrated Voltage and Power Flow Management Considering the Cost of Operation in Active Distribution Networks

Wei Wei,Tao Xu,Xiaoxue Wang,Chengshan Wang,Lingxu Guo,Jun Lin,Tianchu Li 대한전기학회 2016 Journal of Electrical Engineering & Technology Vol.11 No.2

The increasing penetration of distributed energy resources on the distribution networks have brought a number of technical impacts where voltage and thermal variations have been identified as the dominant effects. Active network management in distribution networks aims to integrate distributed energy resources with flexible network management so that distributed energy resources are organized to make better use of existing capacity and infrastructure. This paper propose active solutions which aims to solve the voltage and thermal issues in a distributed manner utilizing a collaborative approach. The proposed algorithms have been fully tested on a distribution network with distributed generation units.