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Energy & Environmental Materials 2024年第4期7卷 396-403页

作者： Myeong-Hyeon Kim Sang-Joon Park tae-jun ha Department of Electronic Materials Engineering Kwangwoon UniversitySeoul 01897Korea

In this study,wearable triboelectric nanogenerators comprising bar-printed polyvinylidene fluoride(PVDF)films incorporated with cobalt-based metal-organic framework(Co-MOF)were *** enhanced output performance of the TENGs was attributed to the phase transition of PVDF from a-crystals toβ-crystals,as facilitated by the incorporation of the *** synthesis conditions,including metal ion,concentration,and particle size of the MOF,were optimized to increase open-circuit voltage(VOC)and open-circuit current(I_(SC))of PVDF-based *** addition to high operational stability,mechanical robustness,and long-term reliability,the developed TENG consisting of PVDF incorporated with Co-MOF(Co-MOF@PVDF)achieved a VOC of 194 V and an I_(SC)of 18.8μ***,the feasibility of self-powered mobile electronics was demonstrated by integrating the developed wearable TENG with rectifier and control units to power a global positioning system(GPS)*** local position of the user in real-time through GPS was displayed on a mobile interface,powered by the battery charged through friction-induced electricity generation.

关键词： bar printing phase transition polyvinylidene fluoride incorporated with cobalt-based metal-organic framework self-powered mobile electronics wearable triboelectric nanogenerators

Comprehensive analysis of two-dimensional charge transport mechanism in thin-film transistors based on random networks of single-wall carbon nanotubes using transient measurements

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Nano Research 2022年第2期15卷 1524-1531页

作者： Hyeonwoo Shin Sang-Joon Park Byeong-Cheol Kang tae-jun ha Department of Electrical Engineering and Computer Science Inter-university Semiconductor Research CenterSeoul National UniversitySeoul 08826Korea Department of Electronic Materials Engineering Kwangwoon UniversitySeoul 01897Korea

Understanding charge transport mechanisms in thin-film transistors based on random networks of single-wall carbon nanotubes(SWCNT-TFTs)is essential for further advances to improve the potential for various nanoelectronic ***,a comprehensive investigation of the two-dimensional(2D)charge transport mechanism in SWCNT-TFTs is reported by analyzing the temperature-dependent electrical characteristics determined from the direct-current and non-quasi-static transient measurements at 80-300 *** elucidate the time-domain charge transport characteristics of the random networks in the SWCNTs,an empirical equation was derived from a theoretical trapping model,and a carrier velocity distribution was determined from the differentiation of the transient ***,charge trapping and de-trapping in shallow-and deep-traps in SWCNT-TFTs were analyzed by investigating charge transport based on their trapping/de-trapping *** comprehensive analysis of this study provides fundamental insights into the 2D charge transport mechanism in TFTs based on random networks of nanomaterial channels.

关键词： single-wall carbon nanotube random networks two-dimensional(2D)charge transport time-domain transient measurements charge trapping/de-trapping shallow-/deep-traps

Dopant-Tunable Ultrathin Transparent Conductive Oxides for Efficient Energy Conversion Devices

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Nano-Micro Letters 2021年第12期13卷 437-451页

作者： Dae Yun Kang Bo-Hyun Kim tae Ho Lee Jae Won Shim Sungmin Kim ha-jun Sung Kee Joo Chang tae Geun Kim School of Electrical Engineering Korea UniversitySeoul 02841Republic of Korea Department of Advanced Materials Engineering Kongju National UniversityCheonan 31080Republic of Korea Department of Physics Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea

Ultrathin film-based transparent conductive oxides(TCOs)with a broad work function(WF)tunability are highly demanded for e cient energy conversion ***,reducing the film thickness below 50 nm is limited due to rapidly increasing resistance;furthermore,introducing dopants into TCOs such as indium tin oxide(ITO)to reduce the resistance decreases the transparency due to a trade-o between the two ***,we demonstrate dopant-tunable ultrathin(≤50 nm)TCOs fabricated via electric field-driven metal implantation(m-TCOs;m=Ni,Ag,and Cu)without com-promising their innate electrical and optical *** m-TCOs exhibit a broad WF variation(0.97 eV),high transmittance in the UV to visible range(89–93%at 365 nm),and low sheet resistance(30–60Ωcm-2).Experimental and theoretical analyses show that interstitial metal atoms mainly a ect the change in the WF without substantial losses in optical *** m-ITOs are employed as anode or cathode electrodes for organic light-emitting diodes(LEDs),inorganic UV LEDs,and organic photovoltaics for their universal use,leading to outstanding performances,even without hole injection layer for OLED through the WF-tailored *** results verify the proposed m-TCOs enable e ective carrier transport and light extraction beyond the limits of traditional TCOs.

关键词： Transparent conductive oxide Metal implantation High transparency Low sheet resistance Work function

A Remark on Strong Law of Large Numbers for Weighted U-Statistics

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Acta Mathematica Sinica,English Series 2014年第9期30卷 1595-1605页

作者： Hyung-tae ha Mei Ling HUANG Department of Applied Statistics Gachon University Department of Mathematics and Statistics Brock University

Let （X, Xn; n≥ 1} be a sequence of i.i.d, random variables with values in a measurable space （S,8） such that E｜h（X1, X2,..., Xm）｜〈 ∞, where h is a measurable symmetric function from Sm into R = （-∞, ∞）. Let {wn,i1,i2 im ; 1 ≤ i1 〈 i2 〈 …… 〈im 〈 n, n ≥ m} be a matrix array of real numbers. Motivated by a result of Choi and Sung （1987）, in this note we are concerned with establishing a strong law of large numbers for weighted U-statistics with kernel h of degree m. We show that whenever SUP n≥m max1〈i1〈i2〈…〈im≤｜wn i1,i2 i,im｜〈∞, where 0 = Eh（X1, X2,..., Xm）. The proof of this result is based on a new general result on complete convergence, which is a fundamental tool, for array of real-valued random variables under some mild conditions.

关键词： Strong law of large numbers weighted U-statistics complete convergence

A novel benzo[4,5]furo[3,2-d]pyrimidine-based host as a n-type host for blue phosphorescent organic light-emitting diodes

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Science China Materials 2022年第4期65卷 1028-1033页

作者： junsu ha junseop Lim jun Yeob Lee School of Chemical Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon-siGyeonggi-do16419Republic of Korea

An electron-transport-type host was synthesized using a benzo[4,5]furo[3,2-d]pyrimidine(BFP)core to develop a high triplet energy *** host was designed to have both the tetraphenylsilyl blocking group and the hole-transport-type carbazole *** the device application,the host was used as an electron-transport-type host mixed with a hole-transport-type 3,3'-di(9H-carbazol-9-yl)-1,1†-biphenyl(mCBP)host in the blue phosphorescent organic light-emitting diodes(PhO-LEDs)doped with a[[5-(1,1-dimethylethyl)-3-phenyl-1H-imidazo[4,5-b]pyrazin-1-yl-2(3H)-ylidene]-1,2-phenylene]bis-[[6-(1,1-dimethylethyl)-3-phenyl-1H-imidazo[4,5-b]pyrazin-1-yl-2(3H)-ylidene]-1,2-phenylene]iridium(Ir(cb)3)blue *** a result,the mCBP:CzBFPmSi mixed host showed high external quantum efficiency over 20%at 1000 cd m^(−2) and low efficiency roll-off in the blue PhOLEDs.

关键词： blue device host efficiency lifetime

Recent advances in endoscopic retrograde cholangiopancreatography in Billroth II gastrectomy patients: A systematic review

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World Journal of Gastroenterology 2019年第24期25卷 3091-3107页

作者： tae Young Park tae jun Song Department of Internal Medicine Inje University Seoul Paik HospitalSeoul 04551South Korea Division of Gastroenterology Asan Medical CenterUniversity of Ulsan College of MedicineSeoul 138-736South Korea

BACKGROUND Endoscopic retrograde cholangiopancreatography(ERCP)in patients with Billroth Ⅱ gastrectomy has been considered a challenging procedure due to the surgically altered gastrointestinal ***,there has been a paucity of comparative studies regarding ERCP in Billroth Ⅱ gastrectomy cases because of procedure-related morbidity and mortality and practical and ethical *** systematic and comprehensive review was performed to obtain a recent perspective on ERCP in Billroth Ⅱ gastrectomy *** To systematically review the literature regarding ERCP in Billroth Ⅱ gastrectomy *** A systematic review was performed on the literature published between May 1975 and January *** following electronic databases were searched:PubMed,EMBASE,and Cochrane *** outcomes of successful afferent loop intubation and successful selective cannulation and occurrence of adverse events were *** A total of 43 studies involving 2669 patients were *** study designs were 36(83.7%)retrospective cohort studies,4(9.3%)retrospective comparative studies,2(4.7%)prospective comparative studies,and 1(2.3%)prospective cohort *** a total of 2669 patients,there were 1432 cases(55.6%)of sideviewing endoscopy,664(25.8%)cases of forward-viewing endoscopy,171(6.6%)cases of balloon-assisted enteroscopy,169(6.6%)cases of anterior obliqueviewing endoscopy,64(2.5%)cases of dual-lumen endoscopy,31(1.2%)cases of colonoscopy,and 14(0.5%)cases of multiple bending *** overall success rate of afferent loop intubation was 91.3%(2437/2669),and the overall success rate of selective cannulation was 87.9%(2346/2437).A total of 195 cases(7.3%)of adverse events *** success rates of afferent loop intubation and the selective cannulation rate for each type of endoscopy were as follows:side-viewing endoscopy 98.2%and 95.3%;forward-viewing endoscopy 97.4%and 95.2%;balloon-assisted enteroscopy 95.4%and 97.5%;oblique-viewing endosco

关键词： Endoscopic retrograde Cholangiopancreatography Therapeutic Endoscope Billroth Ⅱ operation Adverse event Systematic review

Pendulation reduction on ship-mounted container crane via T-S fuzzy model

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Journal of Central South University 2012年第1期19卷 163-167页

作者： JANG Jae Hoon KWON Sung-ha JEUNG Eun tae Department of Control and Instrumentation Changwon National UniversityChangwon 641-773Korea

Ship-mounted container cranes are challenging industrial applications of nonlinear pendulum-like systems with oscillating disturbance which can cause them *** wave-induced ship motion causes the hoisted container to swing during the transfer operation,the swing motion may be dangerously large and the operation must be *** order to reduce payload pendulation of ship-mounted crane,nonlinear dynamics of ship-mounted crane is derived and a control method using T-S fuzzy model is *** results are given to illustrate the validity of the proposed design method and pendulation of ship-mounted crane is reduced significantly.

关键词： ship-mounted crane disturbance pendulation control T-S fuzzy model

Extracts from Paeonia lactiflora Pallas, Rehmannia Glutinosa var. Purpurea Makino, Perilla Frutescens var. Acuta Kudo may increase the endometrial receptivity through expression of leukemia inhibitory factor and adhesion molecules

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Journal of Traditional Chinese Medicine 2019年第1期39卷 15-25页

作者： Eun-Yeong Kim tae-Wook Chung Hee-jung Choi Yeon-Seop jung Syng-Ook Lee jun-Yong Choi Hyung Sik Kim Sooseong You Myeong Soo Lee Ki-tae ha School of Korean Medicine and Korean Medical Research Center for Healthy Aging Pusan National UniversityYangsan 50612Republic of Korea Graduate Training Program of Korean Medicine for Healthy-aging Pusan National UniversityYangsan 50612Republic of Korea Department of Food Science and Technology Keimyung UniversityDaegu 42601Republic of Korea National Clinical Research Center for Korean Medicine Korean Medicine Hospital of Pusan National UniversityYangsan 50612Republic of Korea Laboratory of Molecular Toxicology School of PharmacySungKyunKwan UniversitySuwon 16419Republic of Korea Korea Institute of Oriental Medicine Daejeon 34054Republic of Korea

OBJECTIVE: To find out the combination of the extracts from Paeonia lactiflora Pallas(PL), Rehmannia Glutinosa var. Purpurea Makino(RG), Perilla Frutescens var. Acuta Kudo(PF) to increase endometrial ***: Herbal medicines were extracted with boiling water and polysaccharides were *** examined the effect of PL, RG, and PF(PRP), a most effective herbal formula deduced from constitutive ingredient herbs of Antai Yin which is composed of PRP, on the leukemia inhibitory factor(LIF) expression and endometrial ***: The combination of the extracts from PRP induced the LIF expression in Ishikawa cells and increased the adhesion between Ishikawa and JAr cells. In addition, PRP-induced attachment of JAr cells onto Ishikawa cells and expression of adhesion molecules, ITGAV, ITGB5, CD44 s, and Lselectin, are significantly reduced by knock-down of LIF ***: Induced by the combination of the PRP extracts, the adhesion between trophoblast and endometrial cells are mediated by expression of LIF and adhesion molecules. Thus, we suggest the combination of the PRP extracts may be a novel therapy for enhancing embryo implantation rate.

关键词： Paeonia Rehmannia Perilla Embryo implantation Endometrium Leukemia inhibitory factor Cell adhesion molecules

Recent progress and future research directions for electrochromic zinc-ion batteries

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Journal of Energy Chemistry 2024年第3期90卷 220-232,I0007页

作者： tae Gwang Yun Byungil Hwang jun Young Cheong Department of Molecular Science and Technology Ajou UniversitySuwon 16499Republic of Korea School of Integrative Engineering Chung-Ang UniversitySeoul 06974Republic of Korea Bavarian Center for Battery Technology(Bay Batt)and Department of Chemistry University of Bayreuth95447 BayreuthGermany

In recent times,future energy storage systems demand a multitude of functionalities beyond their traditional energy storage *** line with this technological shift,there is active research and development of electrochromic-energy storage systems designed to visualize electrochemical charging and discharging *** conventional electrochromic-energy storage devices primarily integrated supercapacitors,known for their high power density,to enable rapid color ***,the low energy density of supercapacitors restricts overall energy storage capacity,acting as a significant barrier to expanding the application range of such *** this review,we introduce electrochromic zinc(Zn)-ion battery systems,which effectively overcome the limitation of low energy density,and provide illustrative examples of their applicability across diverse *** many recent research works are present for electrochromic Zn-ion batteries,little review has so far taken *** objective is to discuss on the current progress and future directions for electrochromic Zn-ion batteries,which are applicable for wearable electronics applications and energy storage *** review provides an initial milestone for future researchers in electrochromic energy storage and zinc-ion batteries,which will lead to a stream of future works related to them.

关键词： Electrochromic Zn-ion battery Flexible Transition metal oxide Conductive polymer

Single omental metastasis of renal cell carcinoma after radical nephrectomy:A case report

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World Journal of Clinical Cases 2023年第25期11卷 5994-5999页

作者： Jae-Wook Chung jun-Koo Kang Eun Hye Lee So Young Chun Yun-Sok ha jun Nyung Lee tae-Hwan Kim tae Gyun Kwon Ghil Suk Yoon Department of Urology Kyungpook National University HospitalDaegu 41404South Korea Department of Urology School of MedicineKyungpook National UniversityDaegu 41404South Korea Biomedical Research Institute Kyungpook National UniversityDaegu 41404South Korea Joint Institute for Regenerative Medicine Kyungpook National UniversityDaegu 41404South Korea Department of Pathology Kyungpook National University HospitalDaegu 41404South Korea Department of Pathology School of MedicineKyungpook National UniversityDaegu 41404South Korea

BACKGROUND Renal cell carcinoma(RCC)is the third most common malignancy in the genitourinary *** lungs,bone,lymph nodes,liver,and brain are common metastatic sites of ***,there is limited literature on single omental metastasis of *** SUMMARY We present the case of a 44-year-old man with single omental metastasis of RCC after laparoscopic radical *** diagnosis of the resected left kidney revealed pT3a clear cell RCC(Fuhrman grade III).At 6 mo postoperatively,abdominal computed tomography revealed a 12-mm enhancing nodule in the left lower *** 7 mo after initial operation,laparoscopic removal of the left omental nodule was *** pathological results indicated metastatic clear cell ***,the patient is being treated with adjuvant *** Omental metastasis of RCC owing to laparoscopic radical nephrectomy is *** should be aware of the diverse nature of RCC.

关键词： Metastasis Omentum Renal cell carcinoma Radical nephrectomy Case report