Synthesis and application of 8-hydroxyquinoline modified magnetic mesoporous carbon for adsorption of multivariate metal ions from aqueous solutions

Wenlu Guo,Xiangguo Meng,Yan Liu,Liang Ni,Zhaoyong Hu,Rui Chen,Minjia Meng,Yun Wang,Juan Han,Min Luo 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1

The new 8-hydroxyquinoline (8-HQ) modified magnetic mesoporous carbon (8-HQ-Ni-CMK-3) wasprepared and applied for adsorption of multivariate metal ions from aqueous solution. The preparedadsorbent was characterized by Fourier transform infrared, X-ray diffraction, scanning electronmicroscopy, transmission electron microscope, nitrogen adsorption-desorption isotherm, elementalanalysis, and vibrating sample magnetometer. The static adsorption behaviors toward multivariatemetal ions on graphite, the modified graphite by 8-HQ, magnetic mesoporous carbon, and 8-HQ-Ni-CMK-3 were compared, which showed that 8-HQ-Ni-CMK-3 had excellent adsorption capacity. Theremoval of multivariate metal ions using 8-HQ-Ni-CMK-3 by fixed-bed column was further investigated.

Methane carbon dioxide reforming for hydrogen production in a compact reformer - a modeling study

Ni, Meng Techno-Press 2013 Advances in energy research Vol.1 No.1

Methane carbon dioxide reforming (MCDR) is a promising way of utilizing greenhouse gas for hydrogen-rich fuel production. Compared with other types of reactors, Compact Reformers (CRs) are efficient for fuel processing. In a CR, a thin solid plate is placed between two porous catalyst layers to enable efficient heat transfer between the two catalyst layers. In this study, the physical and chemical processes of MCDR in a CR are studied numerically with a 2D numerical model. The model considers the multi-component gas transport and heat transfer in the fuel channel and the porous catalyst layer, and the MCDR reaction kinetics in the catalyst layer. The finite volume method (FVM) is used for discretizing the governing equations. The SIMPLEC algorithm is used to couple the pressure and the velocity. Parametrical simulations are conducted to analyze in detail the effects of various operating/structural parameters on the fuel processing behavior.

Generation of Hydrogen Peroxide by Single-Atom Clusters Pd Anchored on t-BaTiO3 for Piezoelectric Degradation of Tetracycline

Xin Ni,Yuan Liang,Quanzi Pan,Hengjie Guo,Kai Chen,Bo Zhang,Shaocong Ni,Bin Sheng,Zeda Meng,Shouqing Liu,오원춘 한국재료학회 2023 한국재료학회지 Vol.33 No.11

Single-atom Pd clusters anchored on t-BaTiO3 material was synthesized using hydrothermal and ultrasonic methods for the effective piezoelectric catalytic degradation of pollutants using vibration energy. XRD patterns of BaTiO3 loaded with monoatomic Pd were obtained before and after calcining, and showed typical cubic-phase BTO. TEM and HAADF-STEM images indicated single-atom Pd clusters were successfully introduced into the BaTiO3. The piezoelectric current density of the prepared Pd-BaTiO3 binary composite was significantly higher than that of the pristine BaTiO3. Under mechanical vibration, the nanomaterial exhibited a tetracycline decomposition rate of ~95 % within 7 h, which is much higher than the degradation rate of 56.7 % observed with pure BaTiO3. Many of the piezo-induced electrons escaped to the Pd-doped BaTiO3 interface because of Pd’s excellent conductivity. Single-atom Pd clusters help promote the separation of the piezo-induced electrons, thereby achieving synergistic catalysis. This work demonstrates the feasibility of combining ultrasonic technology with the piezoelectric effect and provides a promising strategy for the development of ultrasonic and piezoelectric materials.

A Network Intrusion Detection Model Based on K-means Algorithm and Information Entropy

Gao Meng,Li Dan,Wang Ni-hong,Liu Li-chen 보안공학연구지원센터 2014 International Journal of Security and Its Applicat Vol.8 No.6

Many factors could influence the clustering performance of K-means algorithm, selection of initial cluster centers was an important one, traditional method had a certain degree of randomness in dealing with this problem, for this purpose, information entropy was introduced into the process of cluster centers selection, and a fusion algorithm combining with information entropy and K-means algorithm was proposed, in which, information entropy value was used to measure the similarity degree among records, the least similar record would be regarded as a cluster center. In addition, a network intrusion detection model was built, it could make cluster centers change dynamically along with the network changes, and the model could real-time update the cluster centers according to actual needs. Experiment results show that the improved algorithm proposed is better than the traditional K-means algorithm in detection ratio and false alarm ratio, and the network intrusion detection model is proved to be feasible.

Multiparametric Functional Magnetic Resonance Imaging for Evaluating Renal Allograft Injury

Yuan Meng Yu,Qian Qian Ni,Zhen Jane Wang,Meng Lin Chen,Long Jiang Zhang 대한영상의학회 2019 Korean Journal of Radiology Vol.20 No.6

Kidney transplantation is the treatment of choice for patients with end-stage renal disease, as it extends survival and increases quality of life in these patients. However, chronic allograft injury continues to be a major problem, and leads to eventual graft loss. Early detection of allograft injury is essential for guiding appropriate intervention to delay or prevent irreversible damage. Several advanced MRI techniques can offer some important information regarding functional changes such as perfusion, diffusion, structural complexity, as well as oxygenation and fibrosis. This review highlights the potential of multiparametric MRI for noninvasive and comprehensive assessment of renal allograft injury.

Highly Uniform Core/Shell Structured CoFe2O4/MIL-100(Fe) Nanofibers for Efficient Visible Light Photocatalysis

Jun Liu,Meng Sun,Meng-Jie Chang,Si-Meng Fan,Qian Hui,Fu-Rong Ni,Bin Yuan 한국섬유공학회 2021 Fibers and polymers Vol.22 No.2

Novel CoFe2O4/MIL-100(Fe) (CFO/MIL-100(Fe)) core/shell nanofibers were prepared by successive ionic layeradsorption and reaction (SILAR) assembly of MIL-100(Fe) on electrospun CoFe2O4 nanofibers. The MIL-100(Fe) shellswere constructed on the dispersed CoFe2O4 fiber surface with high uniformity, homogeneous thickness and high stability. Due to the inherent porosity of MIL-100(Fe), a higher specific surface area of 225.77 m2/g is achieved for the CFO/MIL-100(Fe)-10 sample. The formed CFO/MIL-100(Fe) catalysts exhibit high catalytic activity towards degradation of rhodamineB (RhB) under visible light irradiation. The photocatalytic activity remains above 77 % within 60 min illumination after fourcycles. Due to the simple synthetic method, highly uniform structure, strong magnetic recoverable, as well as goodphotocatalytic performance, the obtained CFO/MIL-100(Fe) core/shell nanofibers could be promising photocatalysts forpractical application.

Active current-limiting control to handle DC line fault of overhead DC grid

MENG Zhou,WANG Xiang,WENPING Zuo,WEIXING Lin,JINYU Wen,RUIZHANG Yang,BINYE Ni,XIAOJUN Lu 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5

To handle with the DC line faults in a DC grid, this paper proposed an active current-limiting controller for hybrid MMC. With this active current-limiting control strategy, the requirement of interruption current of DCCB will be significantly decreased, and the investment of DC grid will be reduced obviously. Firstly, the control architecture of active current-limiting controller is disclosed. To avoid the overvoltage of submodule capacitors during DC fault, a dynamic limiter for the reference value of the DC current controller is proposed. To decrease the peak of fault current, the feedforward controller of DC voltage is put forward. The decoupling controllability of the AC/DC voltage of hybrid MMC is disclosed. The currentlimiting mechanism of the active current-limiting controller is analysis. Then, the validity of the active current-limiting control strategy is verified by RTDS.

Contributed Mini Review : New paradigms on siRNA local application

( Meng Pan ),( Jin Wen Ni ),( Hui Ming He ),( Shan Gao ),( Xiao Hong Duan ) 생화학분자생물학회(구 한국생화학분자생물학회) 2015 BMB Reports Vol.48 No.3

Small interfering RNA (siRNA) functions through pairing with specific mRNA sequences and results in the mRNA`s degradation. It is a potential therapeutic approach for many diseases caused by altered gene expression. The delivery of siRNA is still a major problem due to its rapid degradation in the circulation. Various strategies have been proposed to help with the cellular uptake of siRNA and short or small hairpin RNA (shRNA). Here, we reviewed recently published data regarding local applications of siRNA. Compared with systemic delivery methods, local delivery of siRNA/shRNA has many advantages, such as targeting the specific tissues or organs, mimicking a gene knockout effect, or developing certain diseases models. The eye, brain, and tumor tissues are ‘hot’ target tissues/ organs for local siRNA delivery. The siRNA can be delivered locally, in naked form, with chemical modifications, or in formulations with viral or non-viral vectors, such as liposomes and nanoparticles. This review provides a comprehensive overview of RNAi local administration and potential future applications in clinical treatment. [BMB Reports 2015; 48(3): 147-152]

Association of young age and male sex with primary sclerosing cholangitis in Taiwanese patients with inflammatory bowel disease

( Meng-tzu Weng ),( I-lun Shih ),( Chien-chih Tung ),( Yew-loong Leong ),( Ming-jium Shieh ),( Cheng-yi Wang ),( Jau-min Wong ),( Yen-hsuan Ni ),( Shu-chen Wei ) 대한장연구학회 2022 Intestinal Research Vol.20 No.2

Background/Aims: Primary sclerosing cholangitis (PSC) is associated with inflammatory bowel disease (IBD). We aimed to evaluate the prevalence, clinical manifestation, and outcomes of PSC in Taiwanese patients with IBD. Methods: This retrospective study enrolled patients with IBD admitted from January 1, 1996, to December 31, 2018, to National Taiwan University Hospital. A case-matched analysis was performed comparing patients with IBD with and without PSC according to age, sex, and time of admission, with ratios of 1:4 and 1:2 in the adult and pediatric groups, respectively. Results: In total, 763 patients with IBD were enrolled, 12 of whom were also diagnosed with PSC (1.57%). All these patients had ulcerative colitis (UC). A greater incidence of IBD with PSC was observed in younger patients than in older patients. Male sex was a risk factor for PSC in pediatric patients with IBD (P=0.015); 75% of these patients were diagnosed with PSC along with or after the diagnosis of UC. There was no significant difference in colitis extent and severity between the groups; however, a higher proportion of rectal sparing was observed in patients with PSC (P=0.001). There was no significant difference in cancer development between the groups (P=0.679). Conclusions: A 1.57% prevalence of PSC was observed in Taiwanese patients with IBD. The majority of patients with IBD and PSC were men and were diagnosed at a younger age. Hence, routine evaluation of biliary enzymes and liver imaging is recommended in young male patients with IBD. (Intest Res 2022;20:224-230)

중국 애니메이션 산업의 활성화 방안에 관한 연구

예연(Ni Yan),장몽택(Meng-Ze Zhang),배기형(Ki-Hyung Bae) 한국콘텐츠학회 2019 한국콘텐츠학회논문지 Vol.19 No.3

애니메이션 산업은 21세기 신흥 산업이자 유망 산업으로 소비자층이 광범위하고, 시장 수요가 크고, 제품의 생명주기가 길다는 특징이 있다. 본 연구는 한국, 미국, 중국과 일본 등 4개국 애니메이션 산업의 현황을 살펴보고 성공요인을 분석한 다음 중국 애니메이션 산업의 문제점에 대해 활성화 방안을 제시하고 향후 중국 애니메이션 산업에 발전방향과 향후 국가의 애니메이션 산업 정책 추진에 일조하는데 목적이 있다. 이런 목적을 실현하기 위해서 본 논문은 문헌조사 연구방법을 통하여 중국 애니메이션 산업과 관련한 인터넷 자료, 통계 자료, 보고서, 논문과 학술지 등 문헌자료를 활용하였고 활성화방안을 제시하였다. 활성화 방안으로는 첫째, 창조적인 애니메이션 인재를 적극 양성해야 한다. 둘째, 다양한 수단을 통하여 중국 애니메이션 작품의 창의력과 창작력을 격려해야 한다. 셋째, 시장 환경에 맞는 애니메이션의 산업 사슬을 발전시켜야 한다. 넷째, 애니메이션 시청자를 확대하고, 애니메이션 작품 형식과 내용에 사실성을 강화할 필요가 있다. The animation industry is an emerging and promising industry of the 21st century, characterized by a wide range of consumer segments, high market demand, and a long life cycle of products. The paper is aimed at examining the current situation of the animation industry of Korea, the U.S., China and Japan, analyzing the success factors and presenting measures for activation of problems in Chinas animation industry, and contributing to the promotion of Chinas animation policies in the future. To realize this goal, the study methods were adopted literature review by using Internet data, statistical data, reports, papers and academic journals which are related to the Chinese animation industry and presented methods for activation. The aviations as follows, firstly, it is suggested actively train creative men of animation for profession. Secondly, it is advised to encourage the creativity and originality of Chinese animation works through various ways. Thirdly, it is suggested to develop an industry chain of animation which is suitable for the market circumstances. Fourthly, it needs to expand its viewer and strengthen its reality in the form and content of animation works.