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Porous Microspheres Comprising CoSe2 Nanorods Coated with N-Doped Graphitic C and Polydopamine-Derived C as Anodes for Long-Lived Na-Ion Batteries

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Nano-Micro Letters 2022年第7期14卷 118-139页

作者： Jae Seob Lee Rakesh Saroha Jung Sang cho Department of Engineering Chemistry Chungbuk National UniversityCheongjuChungbuk 361-763Republic of Korea

Metal–organic framework-templated nitrogen-doped graphitic carbon(NGC)and polydopaminederived carbon(PDA-derived C)-double coated one-dimensional CoSe_(2) nanorods supported highly porous threedimensional microspheres are introduced as anodes for excellent Na-ion batteries,particularly with long-lived cycle under carbonate-based electrolyte *** microspheres uniformly composed of ZIF-67 polyhedrons and polystyrene nanobeads(φ=40 nm)are synthesized using the facile spray pyrolysis technique,followed by the selenization process(P-CoSe_(2)@NGC NR).Further,the PDA-derived C-coated microspheres are obtained using a solution-based coating approach and the subsequent carbonization process(P-CoSe_(2)@PDA-C NR).The rational synthesis approach benefited from the synergistic effects of dual carbon coating,resulting in a highly conductive and porous nanostructure that could facilitate rapid diffusion of charge species along with efficient electrolyte infiltration and effectively channelize the volume ***,the prepared nanostructure exhibits extraordinary electrochemical performance,particularly the ultra-long cycle life *** instance,the advanced anode has a discharge capacity of 291(1000th cycle,average capacity decay of 0.017%)and 142 mAh g^(-1)(5000th cycle,average capacity decay of 0.011%)at a current density of 0.5 and 2.0 A g^(-1),respectively.

关键词： Spray pyrolysis Sodium-ion batteries Cobalt selenide nanorods Porous microspheres Dual carbon coating

SOME RESULTS ON GENERALIZED EQUILIBRIUM PROBLEMS INVOLVING STRICTLY PSEUDOCONTRACTIVE MAPPINGS

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Acta Mathematica Scientia 2011年第5期31卷 2041-2057页

作者： Jong Kyu Kim Sun Young cho Department of Mathematics Educations Kyungnam UniversityMasan 631-701Korea Department of Mathematics Gyeongsang National UniversityChinju 660-701Korea

In this paper,we consider an iterative sequence for generalized equilibrium problems and strictly pseudocontractive *** show that the iterative sequence converges strongly to a common element of the solution set of ge... 详细信息

关键词： equilibrium problem nonexpansive mapping inverse-strongly monotone mapping strictly pseudocontractive mapping

Effects of a dynamic membrane formed with polyethylene glycol on the ultrafiltration of natural organic matter

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Frontiers of Environmental Science & Engineering 2010年第2期4卷 172-182页

作者： Boksoon KWON Noeon PARK Jaeweon cho Woongjin R&D Center San 4-1Nakseongdae-dongGwanak-guSeoul 151-057Korea Korea Institute of S&T Evaluation and Planning Yangjae-dongSeocho-guSeoul 137-130Korea Department of Environmental Science and Engineering GIST1 Oryong-dongBuk-guGwangju 500-712Korea

The formation of a dynamic membrane(DM)was investigated using polyethylene glycol(PEG)(molecular weight of 35000 g/mol,concentration of 1 g/L).Two natural organic matters(NOM),Dongbok Lake NOM(DLNOM)and Suwannee River NOM(SRNOM)were used in the ultrafiltration experiments along with *** evaluate the effects of the DM with PEG on ultrafiltration,various transport experiments were conducted,and the analyses of the NOM in the membrane feed and permeate were performed using high performance size exclusion chromatography,and the effective pore size distribution(effective PSD)and effective molecular weight cut off(effective MWCO)were *** advantages of DM formed with PEG can be summarized as follows:(1)PEG interferes with NOM transmission through the ultrafiltration membrane pores by increasing the retention coefficient of NOM in UF membranes,and(2)low removal of NOM by the DM is affected by external factors,such as pressure increases during UF membrane filtration,which decreases the effective PSD and effective MWCO of UF ***,a disadvantage of the DM with PEG was severe flux decline;thus,one must be mindful of both the positive and negative influences of the DM when optimizing the UF performance of the membrane.

关键词： dynamic membrane natural organic matters ultrafiltration membrane performance effective PSD effective molecular weight cutoff

Therapeutic effect of acupuncture point injection with placental extract in knee osteoarthritis

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Journal of Integrative Medicine 2017年第2期15卷 135-141页

作者： Kyeong Mee Park Tae Hwan cho Inno Oriental Clinic Daejon 34014 South Korea cho Orthopaedic Clinic Seoul 06643 South Korea

OBJECTIVE： This study evaluated the effectiveness of acupuncture point injection （API） with placenta extract on pain reduction and joint function in patients with knee osteoarthritis （OA）. METHODS： Fifty-two patients with knee OA, with an average age of 64, and having a symptom duration of more than 3 months were studied in this report. Placental extract was injected weekly into acupuncture point ST35, BL23, BL24 and BL25 for 5 weeks; 8 mL of placental extract into ST35 on the affected side, and 1 mL of placental extract to BL23, BL24 and BL25 bilaterally. RESULTS： After a five-week treatment of API with placental extract, pain was substantially decreased in patients of all Kellgren-Lawrence （KL） grades. Improvement of knee joint swelling was also apparent Decrease of pain and joint swelling improved daily working productive time among patients of all KL grades. CONCLUSION： Study results imply that API with placental extract is a potentially useful therapy to control pain and maintain joint functions in knee OA patients.

关键词： osteoarthritis, knee acupuncture point injection placental extracts pain swelling productive time

DEVELOPMENT OF REALISTIC QUALITY LOSS FUNCTIONS FOR INDUSTRIAL APPLICATIONS

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Journal of Systems Science and Systems Engineering 2006年第4期15卷 385-398页

作者： Abdul-Baasit SHAIBU Byung Rae cho Advanced Quality Engineering Laboratory Department of Industrial Engineering Clemson University Clemson South Carolina SC 29634 U.S.A

A number of quality loss functions, most recently the Taguchi loss function, have been developed to quantify the loss due to the deviation of product performance from the desired target value. All these loss functions assume the same loss at the specified specification limits. In many real life industrial applications, however, the losses at the two different specifications limits are often not the same. Further, current loss functions assume a product should be reworked or scrapped if product performance falls outside the specification limits. It is a common practice in many industries to replace a defective item rather than spending resources to repair it, especially if considerable amount of time is required. To rectify these two potential problems, this paper proposes more realistic quality loss functions for proper applications to real-world industrial problems. This paper also carries out a comparison studies of all the loss functions it considers.

关键词： Modified quadratic loss type Ⅰ exponential loss type Ⅱ exponential loss expected loss,within-specification loss out-of-specification loss

The Dual Effects of Interleukin-18 in Tumor Progression

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Cellular & Molecular Immunology 2007年第5期4卷 329-335页

作者： Sunyoung Park Soyoung Cheon Daeho cho Department of Life Science Sookmyung Women's UniversityChungpa-Dong 2-KaYongsan-KuSeoul 140-742Korea

Interleukin-18 （IL-18） was discovered as an interferon-y-inducing factor and had a critical role in inflammatory and immune respouse. It stimulates natural killer （NK） and T cells and enhances Thl immune response. These activated immune cells eliminate cancer cells and virus-infected cells effectively. However, IL-18 has also been found to promote tumor progression. Higher expression or secretion level of IL-18 is detected in various cancer cells in comparison with normal control, and IL-18 is able to induce angiogenesis, migration/metastasis, proliferation and immune escape. These dual effects and the mechanism of IL-18 need to be investigated further as it relates to cancer.

关键词： IL-18 Th1 immune response NK cytotoxicity tumor progression immune escape

Visual attention and clustering-based automatic selection of landmarks using single camera

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Journal of Central South University 2014年第9期21卷 3525-3533页

作者： CHUHO Yi YONGMIN Shin JUNGWON cho Future IT R&D Lab LG Electronics Home Appliance R&D Lab LG ElectronicsSeoul 153721 Korea Department of Computer Education Jeju National University Department of Mathematics and Computer Science Salisbury University

An improved method with better selection capability using a single camera was presented in comparison with previous method. To improve performance, two methods were applied to landmark selection in an unfamiliar indoor environment. First, a modified visual attention method was proposed to automatically select a candidate region as a more useful landmark. In visual attention, candidate landmark regions were selected with different characteristics of ambient color and intensity in the image. Then, the more useful landmarks were selected by combining the candidate regions using clustering. As generally implemented, automatic landmark selection by vision-based simultaneous localization and mapping(SLAM) results in many useless landmarks, because the features of images are distinguished from the surrounding environment but detected repeatedly. These useless landmarks create a serious problem for the SLAM system because they complicate data association. To address this, a method was proposed in which the robot initially collected landmarks through automatic detection while traversing the entire area where the robot performed SLAM, and then, the robot selected only those landmarks that exhibited high rarity through clustering, which enhanced the system performance. Experimental results show that this method of automatic landmark selection results in selection of a high-rarity landmark. The average error of the performance of SLAM decreases 52% compared with conventional methods and the accuracy of data associations increases.

关键词： simultaneous localization and mapping automatic landmark selection visual attention clustering

Discreteness of Flux Groups

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Acta Mathematica Sinica,English Series 2006年第1期22卷 115-122页

作者： Yong Seung cho Myung Im LIM Department of Mathematics Ewha Women's-University Seoul 120-750 Korea

Let （M, ω） be a closed symplectic 2n-dimensional manifold. Donaldson in his paper showed that there exist 2m-dimensional symplectie submanifolds （V^2m,ω） of （M,ω）, 1 ≤m ≤ n - 1, with （m - 1）-equivalent inclusions. On the basis of this fact we obtain isomorphic relations between kernel of Lefschetz map of M and kernels of Lefschetz maps of Donaldson submanifolds V^2m, 2 ≤ m ≤ n - 1. Then, using this relation, we show that the flux group of M is discrete if the action of π1 （M） on π2（M） is trivial and there exists a retraction r ： M→ V, where V is a 4-dimensional Donaldson submanifold. And, in the symplectically aspherical case, we investigate the flux groups of the manifolds.

关键词： Symplectic diffeomorphisms Flux Symplectically aspherical manifold Donaldson submanifold

APPROXIMATION OF COMMON SOLUTIONS OF VARIATIONAL INEQUALITIES VIA STRICT PSEUDOCONTRACTIONS

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Acta Mathematica Scientia 2012年第4期32卷 1607-1618页

作者： Sun Young cho Shin Min Kang Department of Mathematics and RINS Gyeongsang National UniversityJinju 660-701 Korea

In this paper, a convex feasibility problem is considered. We construct an iterative method to approximate a common element of the solution set of classical variational inequalities and of the fixed point set of a strict pseudocontraction. Strong convergence theorems for the common element are established in the framework of Hilbert spaces.

关键词： fixed point inverse-strongly monotone mapping nonexpansive mapping variational inequality