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Enhancement of vertical phase separation in sequentially deposited organic photovoltaics through the independent processing of additives

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Journal of Energy Chemistry 2024年第7期94卷 768-777页

作者： Damin lee Changwoo Park Gayoung Ham Young Yong Kim Sung-nam Kwon Junyeong lee Sungjin Jo Seok-In Na Hyojung Cha Department of Hydrogen and Renewable Energy Kyungpook National UniversityDaegu 41566Republic of Korea Department of Energy Convergence and Climate Change Kyungpook National UniversityDaegu 41566Republic of Korea Pohang Accelerator Laboratory(PAL) Pohang University of Science and Technology(POSTECH)PohangGyeongbuk 37673Republic of Korea Department of Flexible and Printable Electronics Jeonbuk National UniversityJeonju-siJeollabuk-do 54896Republic of Korea School of Energy Engineering Kyungpook National UniversityDaegu 41566Republic of Korea

Herein,the impact of the independent control of processing additives on vertical phase separation in sequentially deposited (SD) organic photovoltaics (OPVs) and its subsequent effects on charge carrier kinetics at the electron donor-acceptor interface are *** film morphology exhibits notable variations,significantly depending on the layer to which 1,8-diiodooctane (DIO) was *** incidence wide-angle X-ray scattering analysis reveals distinctly separated donor/acceptor phases and vertical crystallinity details in SD ***-of-flight secondary ion mass spectrometry analysis is employed to obtain component distributions in diverse vertical phase structures of SD films depending on additive *** addition,nanosecond transient absorption spectroscopy shows that DIO control significantly affects the dynamics of separated charges in SD *** SD OPVs,DIO appears to act through distinct mechanisms with minimal restriction,depending on the applied *** study emphasizes the significance of morphological optimization in improving device performance and underscores the importance of independent additive control in the advancement of OPV technology.

关键词： Sequential deposition Vertical phase separation Charge dynamics Organic photovoltaics Nonfullerene acceptors

The ROK's Perception of China's Role: Interviews with the ROK General Public

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Contemporary International Relations 2011年第6期21卷 21-32,4页

作者： Jung-nam lee the Asiatic Research Institute at Korea University

North-East Asia is of strategic significance to major world powers such as the United States, China, Japan and Russia. It is a region full ofproblems, such as the North Korean nuclear crisis ano me unification of the Korean peninsula, as well as the Taiwan Question. It is also a region full of disputes including a number of historical territorial disputes and issues.

关键词：中国韩国感知通用朝鲜半岛领土争端东北亚俄罗斯

On von Neumann Regularity of Commutators

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Algebra Colloquium 2024年第2期31卷 181-198页

作者： nam Kyun Kim Tai Keun Kwak Yang lee Sung Ju Ryu Nanqing Ding School of Basic Sciences Hanbat National UniversityDaejeon 34158Korea Department of Data Science Daejin UniversityPocheon 11159Korea Department of Mathematics Yanbian UniversityYanjiJilin 133002China Institute for Applied Mathematics and Optics Hanbat National University Daejeon 34158Korea Department of Mathematics Pusan National UniversityBusan 46241Korea 不详

We study the structure of rings which satisfy the von Neumann regularity of commutators,and call a ring R C-regularif ab-ba ∈(ab-ba)R(ab-ba)for all a,b in *** a C-regular ring R,we prove J(R[X])=N^(*)(R[X])=N^(*)(R)[X]=W(R)[X]■Z(R[X]),where J(A),N^(*)(A),W(A),Z(A)are the Jacobson radical,upper nilradical,Wedderburn radical,and center of a given ring A,respectively,and A[X]denotes the polynomial ring with a set X of commuting indeterminates over A;we also prove that R is semiprime if and only if the right(left)singular ideal of R is *** provide methods to construct C-regular rings which are neither commutative nor von Neumann regular,from any given ***,for a C-regular ring R,the following are proved to be equivalent:(i)R is Abelian;(ii)every prime factor ring of R is a duo domain;(ii)R is quasi-duo;and(iv)R/W(R)is reduced.

关键词： C-regular ring commutator regular ring commutative ring radical singular ideal

Comparison of gemcitabine plus nab-paclitaxel and FOLFIRINOX in metastatic pancreatic cancer

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World Journal of Clinical Cases 2020年第17期8卷 3718-3729页

作者： Sung Yong Han Dong Uk Kim Young Mi Seol Suk Kim nam Kyung lee Seung Baek Hong Hyung-Il Seo Department of Internal Medicine and Biomedical Research Institute Division of GastroenterologyPusan National University HospitalBusan 49241South Korea Department of Hematology-Oncology Biomedical Research InstitutePusan National University HospitalBusan 49241South Korea Department of Radiology Biomedical Research InstitutePusan National University HospitalBusan 49241South Korea Department of Surgery Biomedical Research InstitutePusan National University HospitalBusan 49241South Korea

BACKGROUND Gemcitabine plus nab-paclitaxel(GA)and modified FOLFIRINOX(FFX)have been widely used as standard first-line treatment in pancreatic ***,it is unclear which regimen is more *** To evaluate a retrospective analysis comparing the efficacy and safety of FFX and GA as first-line chemotherapeutic regimens in patients with metastatic pancreatic *** We retrospectively analyzed and compared outcomes in 101 patients who presented with pancreatic cancer and were treated with either GA(n=54)or FFX(n=47).Moreover,we performed subgroup analysis based on the neutrophil/lymphocyte ratio(NLR)and Eastern Cooperative Oncology Group(ECOG)performance *** There were no significant differences between two groups in baseline characteristics,except for the ECOG performance *** median progression-free survival(PFS)(6.43 mo vs 4.90 mo,P=0.058)was comparable between two groups;however,median overall survival(OS)(10.17 mo vs 6.93 mo,P=0.008)was longer in patients who received GA *** patients with ECOG 0(PFS:8.93 mo vs 5.43 mo,P=0.002;OS:16.10 mo vs 6.97 mo,P=0.000)and those with NLR<3(PFS:8.10 mo vs 6.57 mo,P=0.008;OS:12.87 mo vs 9.93 mo,P=0.002),GA regimen showed higher *** GA regimen may be recommended to the patients with NLR<3 or ECOG 0 status although GA and FFX showed comparable efficacy outcomes in patients with metastatic pancreatic cancer.

关键词： Metastatic pancreatic carcinoma Chemotherapy FOLFIRINOX Nabpaclitaxel plus gemcitabine Predict marker Adverse event

First-line chemotherapy in very elderly patients with metastatic pancreatic cancer:Gemcitabine monotherapy vs combination chemotherapy

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World Journal of Clinical Cases 2020年第18期8卷 4022-4033页

作者： Sung Yong Han Dong Uk Kim Young Mi Seol Suk Kim nam Kyung lee Seung Baek Hong Hyung-Il Seo Department of Internal Medicine and Biomedical Research Institute Division of GastroenterologyPusan National University HospitalBusan 49241South Korea Department of Internal Medicine and Biomedical Research Institute Division of Hematology-OncologyPusan National University HospitalBusan 49241South Korea Department of Radiology Biomedical Research InstitutePusan National University HospitalBusan 49241South Korea Department of Surgery Biomedical Research InstitutePusan National University HospitalBusan 49241South Korea

BACKGROUND Combination chemotherapy(gemcitabine plus nab-paclitaxel and FOLFIRINOX)is widely used as the standard first-line treatment for pancreatic *** the severe toxicities of combination chemotherapy,gemcitabine monotherapy(G mono)could be used as a first-line treatment in very elderly patients or those with a low Eastern Cooperative Oncology Group ***,reports on the efficacy of G mono in patients older than 75 years are *** To evaluate the efficacy of G mono and combination chemotherapy by comparing their clinical outcomes in very elderly patients with pancreatic *** We retrospectively analyzed 104 older patients with pancreatic cancer who underwent chemotherapy with G mono(n=45)or combination therapy(n=59)as a first-line treatment between 2011 and *** patients were histologically diagnosed with ductal *** outcomes were progression-free survival and overall *** also analyzed subgroups according to age[65-74 years(elderly)and≥75 years(very elderly)].Propensity score matching was performed to compare the outcomes between the two chemotherapy *** The baseline characteristics were significantly different between the two chemotherapy groups,especially regarding age,ratio of multiple metastases,tumor burden,and Eastern Cooperative Oncology Group performance *** propensity score matching,the baseline characteristics were not significantly different between the chemotherapy groups in elderly and very elderly *** the elderly patients,the median progression-free survival(62 d vs 206 d,P=0.000)and overall survival(102 d vs 302 d,P=0.000)were longer in the combination chemotherapy ***,in the very elderly patients,the median progression-free survival(147 d and 174 d,respectively,P=0.796)and overall survival(227 d and 211 d,respectively,P=0.739)were comparable between the G mono and combination chemotherapy *** events occurred more frequently in the c

关键词： Combination chemotherapy Gemcitabine Pancreatic cancer Elderly Ductal carcinoma Adverse drug event

Diffusion-weighted imaging of biliopancreatic disorders:Correlation with conventional magnetic resonance imaging

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World Journal of Gastroenterology 2012年第31期18卷 4102-4117页

作者： nam Kyung lee Suk Kim Gwang Ha Kim Dong Uk Kim Hyung Il Seo Tae Un Kim Dae Hwan Kang Ho Jin Jang Department of Radiology Biomedical Research InstitutePusan National University HospitalSchool of MedicinePusan National UniversityBusan 602-739South Korea Department of Internal Medicine Biomedical Research InstitutePusan National University HospitalSchool of MedicinePusan National UniversityBusan 602-739South Korea Department of Surgery Biomedical Research InstitutePusan National University HospitalSchool of MedicinePusan National UniversityBusan 602-739South Korea Department of Radiology Yangsan Pusan National University HospitalSchool of MedicinePusan National UniversityYangsan 626-770South Korea Department of Internal Medicine Yangsan Pusan National University HospitalSchool of MedicinePusan National UniversityYangsan 626-770South Korea Department of Obstetrics and Gynecology Armed Forces Seoul HospitalSeoul 110-200South Korea

Diffusion-weighted magnetic resonance imaging(DWI)is a well established method for the evaluation of intracranial diseases,such as acute *** for extracranial application is more difficult due to physiological motion artifacts and the heterogeneous composition of the ***,thanks to the newer technical development of DWI,DWI has become increasingly used over the past few years in extracranial organs including the abdomen and *** previous studies of DWI have been limited to the evaluation of diffuse parenchymal abnormalities and focal lesions in abdominal organs,whereas there are few studies about DWI for the evaluation of the biliopancreatic *** further studies are needed to determine its performance in evaluating bile duct,gallbladder and pancreas diseases,DWI has potential in the assessment of the functional information on the biliopancreatic tract concerning the status of tissue cellularity,because increased cellularity is associated with impeded diffusion,as indicated by a reduction in the apparent diffusion *** detection of malignant lesions and their differentiation from benign tumor-like lesions in the biliopancreatic tract could be improved using DWI in conjunction with findings obtained with conventional magnetic resonance ***,DWI can be useful for the assessment of the biliopancreatic tract in patients with renal impairment because contrast-enhanced computed tomography or magnetic resonance scans should be avoided in these patients.

关键词： Magnetic resonance imaging Diffusion-weighted imaging Biliary tract Gallbladder Pancreas

Jeju seaweeds suppress lipopolysaccharide-stimulated proinflammatory response in RAW 264.7 murine macrophages

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Asian Pacific Journal of Tropical Biomedicine 2014年第7期4卷 529-537页

作者： Eun-Jin Yang Ji-Young Moon Sang Suk Kim Kyong-Wol Yang Wook Jae lee nam Ho lee Chang-Gu Hyun Cosmetic Science Center Department of ChemistryJeju National University Jeju Technopark Ara-1-dongJeju-siJeju 690-121.Korea Citrus Research Station National Institute of Horticultural & Herbal ScienceRDAJeju 699-946.Korea Jeju Love Co. Ltd.542-5 Haengwon-ri.Gujwa-eupJeju 695-975.Korea LINC Agency Jeju National University

Objective:To investigate the anti-inflammatory effects of Jeju seaweeds on macrophage RAW264.7 cells under lipopolysaccharide(LPS)***:Ethyl acetate fractions were prepared from five different types of Jeju seaweeds,Dictyopteris divaricata(***),Dictyopteris prolifera(***),Prioutis cornea(***,Grateloupia laceolata(G,lanceolate,and Cralcloupia filicina(***)They were screened for inhibitory effects on proinflammatory mediators and cytokines such as nitric oxide(NO),prostaglandin E,,tumor necrosis factor-a(TNF-a),and interleukin-6(11.-6).Results:Our results revealed that ***,***,***,***,and *** potently inhibited ***-stimulaled NO production(IC_(50),values were 18.0,38.36,38.43,32.81 and 37.14μg/mL,respectively).Consistent with these findings,***,***,***,and *** also reduced the IPS-induced and prostaglandin E,production in a concentration-dependent ***,they suppressed the expression of inducible NO synthase and cyclooxygenase-2 at the protein level in a dose-dependent manner in the RAW264.7 cells,as detennined by western *** addition,the levels of TNF-a and IL-6,released into the medium,were also reduced by ***,***,***,G,lanceolata,and *** in a dose-dependent manner(IC_(50)values for TNF-a were 16.11,28.21,84.27,45.52 and74.75μg/mL,respectively;IC_(50),values for IL-6 were 37.35,80.08,103.28,62.53 and 84.28μg/mL,respectively).The total phlorotannin content was measured by the Folin-Ciocalteu method and expressed as phloroglucinol *** content was 92.0μg/mg for ***,151.8μg/mg for ***,57.2μg/mg for ***,53.0 pg/mg for ***,and 40.2μg/mg for ***:Thus,these findings suggest that Jeju seaweed extracts have potential therapeutic applications for inflammatory responses.

关键词： Nitrie oxide Inlerleukin-6 Prostaglandin E_2 Tumor necrosis factor-α Seaweeds Proinflammatory mediators

Improvement of 5.8 GHz Band Patch Antenna with Metamaterial

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Journal of Measurement Science and Instrumentation 2010年第2期1卷 170-172页

作者： nam-ki lee Seung-in YANG School of Electronic Engineering Soongsil UniversitySeoul 156-743Korea

A patch antenna, a metamaterial patch antenna and a proposed metamaterial patch antenna, are simulated and compared. Simulation results show that the proposed antenna can concentrate so well radiation energy into broadside direction that the antenna gain is increased and the side lobe level is decreased. Therefore, the gain of the proposed metamaterial patch antenna is improved by 2 dB than that of the ordinary metanmterial patch antenna.

关键词： proposed metamaterial patch antenna gxin

OsWRKY65 enhances immunity against fungal and bacterial pathogens in rice

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The Crop Journal 2024年第2期12卷 470-481页

作者： Seungmin Son Giha Song Suhyeon nam Jinjeong lee Duk-Ju Hwang Eun-Jung Suh Sang Ryeol Park National Institute of Agricultural Sciences Rural Development AdministrationJeonju 54874Republic of Korea Department of Agriculture Forestry and BioresourcesPlant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Republic of Korea Department of Crop Science and Biotechnology Jeonbuk National UniversityJeonju 54896Republic of Korea

Diverse bacterial and fungal pathogens attack plants,causing biotic stress and severe yield losses *** losses are expected to become more serious as climate change improves conditions for many ***,identifying genes conferring broad-spectrum disease resistance and elucidating their underlying mechanisms provides important resources for plant *** transcription factors affect plant growth and stress ***,the functions of many WRKY proteins remain to be ***,we demonstrated the role of rice(Oryza sativa)WRKY groupⅢtranscription factor OsWRKY65 in ***65 localized to the nucleus and acted as transcriptional *** and molecular functional analyses showed that OsWRKY65 increases resistance to the fungal pathogen Fusarium fujikuroi through downregulation of GA signaling and upregulation of JA ***,OsWRKY65 modulated the expression of the key genes that confer susceptibility or resistance to Xanthomonas oryzae *** to enhance immunity against the *** particular,OsWRKY65directly bound to the promoter region of OsSWEET13 and repressed its *** together,our findings demonstrate that the OsWRKY65 enhances resistance to fungal and bacterial pathogens in rice.

关键词： Bacterial blight Bakanae disease Broad-spectrum disease resistance Oriza sativa OsWRKY65 Rice