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Synergistic passivation of MAPbI_(3) perovskite solar cells by compositional engineering using acetamidinium bromide additives

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Journal of Energy Chemistry 2021年第8期30卷 755-762,I0016页

作者： Kyungeun Jung Weon-sik Chae Jae Won choi Ki Chul Kim Man-Jong Lee Department of Chemistry Konkuk University143-701 SeoulSouth Korea Department of Advanced Technology Fusion Konkuk University143-701 SeoulSouth Korea Analysis Research Division Daegu CenterKorea Basic Science Institute702-701 DaeguSouth Korea Division of Chemical Engineering Konkuk University05029 SeoulSouth Korea

For the global commercialization of highly efficient and stable perovskite solar cells(PSCs),it is necessary to effectively suppress the formation of various defects acting as nonradiative recombination sources in perovskite light-harvesting *** defects between the charge-selective layer and the perovskite are easily formed in the solution process used to fabricate perovskite *** addition,owing to the difference in thermal expansion coefficients between the substrate and the perovskite film,internal residual tensile stress inevitably occurs,resulting in increased nonradiative ***,a simple compositional engineering scheme for realizing efficient and stable PSCs,which incorporates acetamidinium bromide(AABr)as an additive into the MAPbI_(3) lattice,is *** an additive,AABr has been found to provide synergistic multiple passivation for both internal and interfacial *** was found to effectively release the tensile strain of the MAPbI_(3) film by forming a structure stabilized by NH-I hydrogen bonds,as evidenced by calculations based on density functional theory(DFT).Furthermore,the incorporated AABr additives created a charge carrier recombination barrier to enhance charge collection capability by reducing interfacial ***,a power conversion efficiency(PCE)of 20.18%was achieved using a planar device employing AABr-incorporated MAPbI_(3).This was substantially higher than the 18.32% PCE of a pristine MAPbI_(3)-based ***,unencapsulated PSCs using AABr-incorporated MAPbI_(3) absorbers exhibited excellent long-term stability,maintaining>95% of initial PCE up to 1200 hours in ambient air.

关键词： Acetamidinium bromide Planar perovskite solar cell Tensile stress Interface passivation Recombination barrier

Enhanced thermoelectric properties of NbCoSn half-Heuslers through in-situ nanocrystallization of amorphous precursors during the consolidation process

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Journal of Materials Science & Technology 2023年第34期165卷 39-48页

作者： Chanwon Jung Kyuseon Jang Hail Park Jeongin Jang Hanhwi Jang Byungchul Kang Kitae Park Siyuan Zhang Ruben Bueno Villoro SuDong Park Ho Jin Ryu Yeon sik Jung Min-Wook Oh Christina Scheu Seong-Hoon Yi Pyuck-Pa choi Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Republic of Korea Max-Planck-Institut für Eisenforschung GmbH Düsseldorf 40237Germany Electrical Materials Research Division Energy Conversion Research CenterKorea Electrotechnology Research Institute(KERI)Changwon 51543Republic of Korea Department of Materials Science and Metallurgical Engineering Kyungpook National University80 DaehakroDaegu 41566Republic of Korea Department of Nuclear and Quantum Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-roYuseong-guDaejeon 34141Republic of Korea Department of Materials Science and Engineering Hanbat National University125 Dongseodae-roYuseong-guDaejeon 34158Republic of Korea

Tailoring nanostructures is a general approach used to obtain enhanced thermoelectric properties for halfHeusler compounds because the wide areas of grain and phase boundaries could be scattering centers that lower lattice thermal ***,a common fabrication method based on the sintering of crystalline precursors crushed from as-cast alloy ingots has limitations in obtaining a homogeneous microstructure without microsized impurity phases,owing to residual elemental segregation from *** this study,we used amorphous NbCoSn alloys as a precursor for the sintered specimen to obtain a homogeneous NbCoSn bulk specimen without microsized impurity phases and segregation,which led to the enhanced Seebeck coefficient due to the high purity of the half-Heusler phase after ***,superplasticity originating from amorphous features enabled the powders to be largely deformed during the sintering process,even at a low sintering temperature(953 K).This resulted in less oxidation at both,the grain boundary and the interior,as the O diffusion pathway was blocked during the sintering *** a result,the NbCoSn0.95Sb0.05 specimen using an amorphous precursor exhibited an enhanced zT of 0.7,due to the increase in the power factor and a decrease in lattice thermal conductivity compared to the specimen using a crystalline precursor.

关键词： Half-Heusler compounds Amorphous Superplasticity Segregation Atom probe tomography

Autopilot Control Synthesis for Path Tracking Maneuvers of Underwater Vehicles

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China Ocean Engineering 2011年第2期25卷 237-249页

作者： Sam-Sang YOU Hyeung-sik choi Hwan-Seong KIM Han-Il PARK School of Mechanical and Energy Systems Engineering Korea Maritime University Department of Logistics System Engineering Korea Maritime University Department of Ocean Engineering Korea Maritime University

This paper is concerned with the robust control synthesis of autonomous underwater vehicle （AUV） for general path following maneuvers. First, we present maneuvering kinematics and vehicle dynamics in a unified framework. Based on H∞ loop-shaping procedure, the 2-DOF autopilot controller has been presented to enhance stability and path tracking. By use of model reduction, the high-order control system is reduced to one with reasonable order, and further the scaled low-order controller has been analyzed in both the frequency and the time domains. Finally, it is shown that the autopilot control system provides robust performance and stability against prescribed levels of uncertainty.

关键词： underwater vehicle path following 2-DOF control synthesis H∞ loop-shaping plant uncertainty model reduction

Rainbow halos occur less following implantation of extended range of vision one-piece intraocular lenses vs diffractive bifocal intraocular lenses

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International Journal of Ophthalmology(English edition) 2020年第6期13卷 913-919页

作者： Jae-hyung Kim Youngsub Eom Seo Yeon Park Soo Youn choi Ho sik Hwang Jun-Heon Kim Jong Suk Song Hyo myung Kim Seoul Daabom Eye Center Cheongju 28568Republic of Korea Department of Ophthalmology Ansan HospitalKorea University College of Medicine.Seoul 15355Republic of Korea BGN World Tower Eye Clinic Seoul 05551Republic of Korea Department of Ophthalmology Yeouido St.Mary's HospitalCollege of Medicinethe Catholic University of KoreaSeoul 07345Republic of Korea Joeunnun Vision Clinic Seoul 06134Republic of Korea

AIM:To evaluate clinical outcomes following implantation of an extended range of vision intraocular lens(IOL),the ZXR00,and a diffractive multifocal IOL with+2.75 diopters(D)add power,the ***:Totally 30 patients who underwent either bilateral implantation of the ZXR00 IOL with intended emmetropia(ZXR00 emmetropia group:20 eyes)and intended micromonovision(ZXR00 monovision group:20 eyes),or bilateral implantation of the ZKB00 IOL with intended emmetropia(ZKB00 group:20 eyes)were included in this *** acuity at 4 m,80,and 40 cm;and the types of halos(misty,fine,and rainbow)were analyzed at one and three months after ***:There were no significant differences in distance visual acuity among the three *** mean uncorrected intermediate visual acuity was better in the ZXR00 emmetropia and monovision groups(0.02 logMAR and 0.02 logMAR,respectively)than in the ZKB00 group(0.14 logMAR).The mean uncorrected near visual acuity was worse in the ZXR00 emmetropia group(0.26 logMAR)than in the ZXR00 monovision and ZKB00 groups(0.12 logMAR and 0.10 logMAR,respectively).There was an increased incidence of rainbow halos in the ZKB00 group vs in either ZXR00 group(P=0.033).CONCLUSION:Implantation of the ZXR00 IOL with intended micromonovision provide superior visual acuity than implantation of the ZXR00 IOL with intended *** ZXR00 IOLs tend to show a lower incidence of rainbow halos than did the ZKB00 IOL.

关键词： halos intraocular lens diffractive bifocal multifocal rainbow halos

Randomized controlled trial to evaluate the efficacy and safety of fexuprazan compared with esomeprazole in erosive esophagitis

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World Journal of Gastroenterology 2022年第44期28卷 6294-6309页

作者： Kang Nyeong Lee Oh Young Lee Hoon Jai Chun Jin Il Kim Sung Kook Kim Sang Woo Lee Kyung sik Park Kook Lae Lee Suck Chei choi Jae-Young Jang Gwang Ha Kim In-kyung Sung Moo In Park Joong Goo Kwon Nayoung Kim Jae Jun Kim Soo Teik Lee Hyun Soo Kim Ki Bae Kim Yong Chan Lee myung-Gyu choi Joon Seong Lee Hwoon-Yong Jung Kwang Jae Lee Jie-Hyun Kim Hyunsoo Chung Department of Internal Medicine Hanyang University College of MedicineSeoul 04763South Korea Department of Internal Medicine Korea University Anam HospitalSeoul 02841South Korea Department of Internal Medicine The Catholic University of KoreaYeouido ST.Mary’s HospitalSeoul 07260South Korea Department of Internal Medicine Kyungpook National University HospitalDaegu 41944South Korea Department of Internal Medicine Korea University Ansan HospitalAnsan-si 15355South Korea Department of Internal Medicine Keimyung University Dongsan HospitalDaegu 42601South Korea Department of Internal Medicine Seoul Metropolitan Government Seoul National University Boramae Medical CenterSeoul 07061South Korea Department of Internal Medicine Wonkwang University HospitalIksan 54538South Korea Department of Internal Medicine KyungHee University Medical CenterSeoul 02447South Korea Department of Internal Medicine Pusan National University School of Medicine and Biomedical Research InstitutePusan National University HospitalBusan 47241South Korea Department of Internal Medicine KKonkuk University Medical CenterSeoul 05030South Korea Department of Internal Medicine Kosin University Gaspel HospitalBusan 49267South Korea Department of Internal Medicine Daegu Catholic University Medical CenterDaegu 42471South Korea Department of Internal Medicine Seoul National University Bundang HospitalSeongnam-si 13620Gyeonggi-doSouth Korea Department of Internal Medicine Samsung Medical CenterSeoul 06351South Korea Department of Internal Medicine Chonbuk National University HospitalJeonju-si 54907South Korea Department of Internal Medicine Chonnam National University HospitalGwangju 61469South Korea Department of Internal medicine Chungbuk National University School of MedicineCheong Ju 28644South Korea Department of Internal Medicine Severance HospitalSeoul 03722South Korea Department of Internal Medicine The Catholic University of KoreaSeoul ST.Mary’s HospitalSeoul 06591South Korea Digestive Disease Center Soon

BACKGROUND Fexuprazan,a novel potassium-competitive acid blocker,reversibly suppresses the K+/H+-ATPase enzyme in proton pumps within gastric parietal ***’s suppression of gastric acid was maintained in healthy individuals for 24 h in a dose-dependent *** To compare fexuprazan to esomeprazole and establish its efficacy and safety in patients with erosive esophagitis(EE).METHODS Korean adult patients with endoscopically confirmed EE were randomized 1:1 to receive fexuprazan 40 mg or esomeprazole 40 mg once daily for eight *** primary endpoint was the proportion of patients with healed EE confirmed by endoscopy at week *** secondary endpoints included the healing rate of EE at week 4,symptom response,and quality of life *** profiles and serum gastrin levels were compared between the *** Of the 263 randomized,218 completed the study per protocol(fexuprazan 40 mg,n=107;esomeprazole 40 mg,n=111).Fexuprazan was non-inferior to esomeprazole regarding the healing rate at week 8[99.1%(106/107)vs 99.1%(110/111)].There were no between-group differences in the EE healing rate at week 4[90.3%(93/103)vs 88.5%(92/104)],symptom responses,and quality of life ***,serum gastrin levels at weeks 4 and 8 and drug-related side effects did not significantly differ between the *** Fexuprazan 40 mg is non-inferior to esomeprazole 40 mg in EE healing at week *** suggest that fexuprazan is an alternative promising treatment option to PPIs for patients with EE.

关键词： Gastroesophageal reflux Esophagitis Proton pump inhibitors Heartburn Quality of life

Impact of statin usage patterns on outcomes after percutaneous coronary in-tervention in acute myocardial infarction：Korea Working Group on Myocar-dial Infarction registry （KorMI） study

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Journal of Geriatric Cardiology 2014年第2期11卷 93-99页

作者： Chan-Hee Lee Sang-Hee Lee Jong-Seon Park Young-Jo Kim Kee-sik Kim Shung-Chull Chae Hyo-Soo Kim Dong-Ju choi Myeong-Chan Cho Seung-Woon Rha myung-Ho Jeong Department of Cardiology Yeungnam University Hospital 170 Hyeonchung-ro Nam-gu Daegu 705-717 South Korea Department of Internal Medicine Daegu Catholic University Hospital 33 Duryugongwon-ro 17-gil Nam-gu Daegu 705-718 South Korea Department of Internal Medicine Kyungpook National University Hospital 130 Dongdeok-ro Jung-gu Daegu 700-721 South Korea Department of Internal Medicine Seoul National University Hospital 101 Daehak-ro Jongno-gu Seoul 110-744 South Korea Department of Internal Medicine Seoul National University Bundang Hospital 82 Gumi-ro 173-gil Bundang-gu Seongnam 463-707 South Korea Department of Internal Medicine Chungbuk National University Hospital 776 1sunhwan-ro Heungdeok-gu Cheongju 361-711 South Korea Department of Internal Medicine Korea University Guro Hospital 148 Gurodong-ro Guro-gu Seoul 152-703 South Korea Department of Internal Medicine Chonnam National University Hospital 42 Jebong-ro Dong-gu Gwangju 501-757 South Korea

在心肌的梗塞(STEMI ) 是的尖锐圣片断举起以后的 statin 使用的 BackgroundThe 利益然而，很好证实预定 statin 管理的影响没被阐明。这研究的目的在经皮的冠的干预(一种总线标准) 以后集中了于早临床的结果学习包括了的心肌的梗塞登记... 详细信息

在心肌的梗塞(STEMI ) 是的尖锐圣片断举起以后的 statin 使用的 BackgroundThe 利益然而，很好证实预定 statin 管理的影响没被阐明。这研究的目的在经皮的冠的干预(一种总线标准) 以后集中了于早临床的结果学习包括了的心肌的梗塞登记(KorMI ) 上的朝鲜工作组的 .MethodsThis 分析 3,584 个 STEMI 病人(吝啬的年龄， 63 ±；13 年；男性， 2,684， 74.9%) 从 2008 年 1 月经历一种总线标准到 2009 年 6 月。主要不利心脏的事件的率(向：所有原因死亡，周期性的 MI，和目标损害 revascularization ) 在根据 statin 治疗预定组织的病人之中被比较：我，在期间并且在住院以后(n = 2,653， 74%) ；II，仅仅在住院期间(n = 309， 8.6%) ；III，仅仅在分泌物以后(n = 157， 4.4%) ；并且 IV，没有 statin 治疗(n = 465， 13%) 。吝啬的后续持续时间是 234 ±；statin 的 113 个 *** 因素在住院期间使用包括的优先的 statin 使用，多重 diseased 容器，在心肌的梗塞流动等级 III 的最后的 thrombolysis，和低密度的脂蛋白胆固醇水平。在 6 月的后续，组 III 和 IV 有最高的向率(2.3% ， 3.9% ， 5.1% ，和 4.9% 为组 I-IV，分别地 P = 0.004 ) 。在为 confounders 调整以后，组 II-IV 比组有更高的向风险我[危险比率(HR ) ：3.20， 95% 信心间隔(95%CI ) ：1.31-7.86， P = 0.011；HR：3.84， 95%CI：1.47-10.02， P = 0.006；并且 HR：3.17， 95%CI：1.59-6.40， P = 0.001；分别地] 基于国家注册表数据库， .ConclusionsThis 学习早显示出早、连续的 statin 治疗 improvs 在在真实世界的临床的实践的一种总线标准以后的 STEMI 病人的结果。

关键词：急性心肌梗死他汀类药物冠状动脉注册表韩国拨号 MACE 低密度脂蛋白

Combination of anti-PD-L1 antibody with peptide MEL-dKLA targeting M2 tumor-associated macrophages suppresses breast cancer metastasis

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Cancer Communications 2022年第4期42卷 345-349页

作者： Chanju Lee Hyunji Lee Hayoon Cho Soyoung Kim Ilseob choi Young-sik Hwang Hyunju Jeong Hogi Jang Sehyun Pak Deok-Sang Hwang Ik-Hwan Han Hyunsu Bae Department of Physiology College of Korean MedicineKyung Hee University26 Kyungheedae-roDongdaemoon-guSeoul 02447Republic of Korea Department of Science in Korean Medicine College of Korean MedicineKyung Hee University26 Kyungheedae-roDongdaemoon-guSeoul 02447Republic of Korea Cancer Immunology Branch National Cancer Center323 Ilsan-roIlsandong-guGoyang 10408Republic of Korea Department of Clinical Korean Medicine Graduate SchoolKyung Hee University26 Kyungheedae-roDongdaemoon-guSeoul 02447Republic of Korea

Dear editors,Breast cancer is a leading cause of cancer-related deaths worldwide and is the most common cancer among women[1].The cause of death in patients with breast cancer is not the primary tumor itself but mainly *** most common sites of breast cancer metastasis include the bones,lungs,brain,lymph nodes,and ***,lung metastasis has been a particular concern as it results in high patient morbidity and mortality rates[2].

关键词： metastasis breast mortality

Interleukin-24 is correlated with differentiation and lymph node numbers in rectal cancer

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World Journal of Gastroenterology 2011年第9期17卷 1167-1173页

作者： Youngmin choi Mee-Sook Roh Young-Seoub Hong Hyung-sik Lee Won-Joo Hur Department of Radiation Oncology Dong-A University School of Medicine Department of Pathology Dong-A University School of Medicine Department of Preventive Medicine Dong-A University School of Medicine

AIM:To assess the significance of interleukin(IL)-24 and vascular endothelial growth factor(VEGF)expression in lymph-node-positive rectal cancer. METHODS:Between 1998 and 2005,90 rectal adenocarcinoma patients with lymph node involvement were *** patients received radical surgery and postoperative pelvic chemoradiotherapy of 50.4-54.0 *** of 5-fluorouracil and leucovorin or levamisole was given intravenously during the first and last week of radiotherapy,and then monthly for about 6 *** of IL-24 and VEGF was evaluated by immunohistochemical staining of surgical specimens, and their relations with patient characteristics and survival were *** median follow-up of surviving patients was 73 mo(range:52-122 mo). RESULTS:IL-24 expression was found in 81 out of 90 patients;31 showed weak intensity and 50 showedstrong *** expression was found in 64 out of 90 *** and weak intensities of IL-24 expression were classified as negative expression for ***-24 expression was significantly reduced in poorly differentiated tumors in comparison with well or moderately differentiated tumors(P=0.004),N2b to earlier N stages(P=0.016),and stageⅢc to stageⅢ a orⅢb(P=0.028).The number of involved lymph nodes was also significantly reduced in IL-24-positive patients in comparison with IL-24-negative ones. There was no correlation between VEGF expression and patient *** of IL-24 and VEGF was not correlated with survival,but N stage and stages were significantly correlated with survival. CONCLUSION:IL-24 expression was significantly correlated with histological differentiation,and inversely correlated with the degree of lymph node involvement in stageⅢrectal cancer.

关键词：白细胞介素分化程度淋巴结直肠癌血管内皮生长因子 VEGF 免疫组化染色手术切除

Strain-tunable optical microlens arrays with deformable wrinkles for spatially coordinated image projection on a security substrate

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Microsystems & Nanoengineering 2022年第5期8卷 225-237页

作者： In sik choi Seongho Park Sangheon Jeon Young Woo Kwon Rowoon Park Robert A.Taylor Kwangseuk Kyhm Suck Won Hong Department of Cogno-Mechatronics Engineering Department of Optics and Mechatronics EngineeringPusan National UniversityBusan 46241Republic of Korea Research Center for Dielectric and Advanced Matter Physics Pusan National UniversityBusan 46241Republic of Korea Department of Physics University of OxfordOxford OX13PUUK Department of Nano-Fusion Technology Pusan National UniversityBusan 46241Republic of Korea

As a new concept in materials design,a variety of strategies have been developed to fabricate optical microlens arrays(MLAs)that enable the miniaturization of optical systems on the micro/nanoscale to improve their characteristic performance with unique optical *** this paper,we introduce a cost-effective and facile fabrication process on a large scale up to~15 inches via sequential lithographic methods to produce thin and deformable hexagonally arranged MLAs consisting of polydimethylsiloxane(PDMS).Simple employment of oxygen plasma treatment on the prestrained MLAs effectively harnessed the spontaneous formation of highly uniform nanowrinkled structures all over the surface of the elastomeric *** strain-controlled tunability,unexpected optical diffraction patterns were characterized by the interference combination effect of the microlens and deformable ***,the hierarchically structured MLAs presented here have the potential to produce desirable spatial arrangements,which may provide easily accessible opportunities to realize microlens-based technology by tunable focal lengths for more advanced micro-optical devices and imaging projection elements on unconventional security substrates.

关键词： projection arrays spatially