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| ○ | ○ | Article | Impact of health-related quality of life on survival after dialysis initiation: a prospective cohort study in Korea | Background: The effect of each health-related quality of life (HRQOL) component on hemodialysis prognosis has not been well studied. We aimed to investigate the clinical factors associated with HRQOL and the effect of HRQOL after dialysis initiation on long-term survival in an Asian population. Methods: A total of 568 hemodialysis patients were included from a nationwide prospective cohort study. HRQOL was evaluated using the Kidney Disease Quality of Life (KDQOL) Short Form (TM) 1.3 at 3 months after dialysis initiation. The effect of each KDQOL item score on mortality was analyzed. Multivariable Cox analysis was performed after adjusting for age, sex, modified Charison comorbidity index, and causes of primary kidney disease. Results: Old age, diabetes mellitus, high comorbidities, and low serum albumin levels were associated with poor physical health status. Decreased urine output was associated with both poor physic& and mental health status. The scores of 3 indices in the kidney disease domain (effect of kidney disease, social support, and dialysis staff encouragement) showed significant associations with mortality, as did the 3 indices (physical function, physical role limitation, and body pain) in the physical health domain. Neither the 4 indices in the mental health domain nor the mental composite score showed a significant association with mortality. However, a high physical composite score was associated with decreased overall patient mortality (P = 0.003). The effect of physical composite score on survival was prominent among young or middle-aged groups. Conclusion: Poor physical health status 3 months after hemodialysis start correlates significantly with overall mortality. | Lee, Jeonghwan; Kim, Yong Chul; Kwon, Soie; Li, Lilin; Oh, Sohee; Kim, Hyoung; An, Jung Nam; Cho, Jang-Hee; Kim, Dong Ki; Kim, Yong-Lim; Oh, Yun Kyu; Lim, Chun Soo; Kim, Yon Su; Lee, Jung Pyo | Seoul Metropolitan Govt Seoul Natl Univ, Boramae Med Ctr, Dept Internal Med, Seoul, South Korea; Seoul Natl Univ, Dept Internal Med, Coll Med, Seoul, South Korea; Seoul Natl Univ Hosp, Dept Internal Med, Seoul, South Korea; Yanbian Univ Hosp, Dept Intens Care Unit, Yanji, Jilin, Peoples R China; Seoul Metropolitan Govt Seoul Natl Univ, Med Res Collaborating Ctr, Boramae Med Ctr, Seoul, South Korea; Hallym Univ, Dept Internal Med, Kangnam Sacred Heart Hosp, Seoul, South Korea; Hallym Univ, Dept Internal Med, Sacred Heart Hosp, Anyang, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Internal Med, Daegu, South Korea | Cho, Jang-hee/ABD-3534-2020; Lee, Jeonghwan/C-5214-2011; Kim, Do Hyoung/AAE-7557-2022; Lee, Jun-Young/N-5963-2019; Oh, Yun/J-5542-2012; Kim, Yong/L-8653-2019; Kim, Dong Ki/J-5389-2012; Kim, Yong-Lim/AGK-3172-2022 | 57203144567; 57026583000; 57206477140; 57211022560; 55509767900; 57215136490; 55286660300; 7403536291; 23479259100; 55633533600; 15019793000; 15019536200; 7410205767; 56028990400 | nephrolee@gmail.com; | KIDNEY RESEARCH AND CLINICAL PRACTICE | KIDNEY RES CLIN PRAC | 2211-9132 | 2211-9140 | 39 | 4 | SCIE | UROLOGY & NEPHROLOGY | 2020 | 3.667 | 32.0 | 0.58 | 2025-06-25 | 13 | 12 | Dialysis; Mental health; Mortality; Physical health; Quality of life | RENAL-DISEASE PATIENTS; PERITONEAL-DIALYSIS; MENTAL-HEALTH; HEMODIALYSIS-PATIENTS; MAINTENANCE DIALYSIS; PHYSICAL-ACTIVITY; MORTALITY; PREDICTOR; MORBIDITY; RACE | Dialysis; Mental health; Mortality; Physical health; Quality of life | albumin; calcium; creatinine; hemoglobin; phosphorus; uric acid; adult; Article; cerebrovascular disease; Charlson Comorbidity Index; clinical assessment; clinical outcome; cognitive function test; cohort analysis; congestive heart failure; coronary artery disease; diabetes mellitus; dialysis; diastolic blood pressure; emotion; estimated glomerular filtration rate; fatigue; female; follow up; glomerulonephritis; human; hypertension; interview; kidney disease; kidney function; major clinical study; male; mental health; middle aged; mortality; patient satisfaction; peripheral vascular disease; peritoneal dialysis; prospective study; quality of life; questionnaire; sexual function; smoking; social interaction; survival; systolic blood pressure | English | 2020 | 2020-12 | 10.23876/j.krcp.20.065 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Patterns in renal diseases diagnosed by kidney biopsy: A single-center experience | Background: The worldwide incidence of renal disease diagnosed by a kidney biopsy varies with age, race, sex, and region. Owing to a lack of studies and limited research resources for this disease in Korea, we investigated renal disease patterns by analyzing data from kidney biopsies performed over 13 years in a university-based teaching hospital in Korea. Methods: Among 2,053 kidney biopsies performed from 2001 to 2013 at Kyungpook National University Hospital, 1,924 were retrospectively analyzed for histopathologic, demographic, and clinical data as well as laboratory results. Results: Among the 1,924 studied kidney biopsies, 1,078 were males (56.0%) and the mean age was 37.7 +/- 16.5 years. Asymptomatic urinary abnormalities were the most common clinical manifestation (62.5%). Immunoglobulin A nephropathy (IgAN) was the most common primary glomerular disease (37.4%), followed by minimal change disease (MCD), membranous nephropathy (MN), focal segmental glomerulonephritis and crescentic glomerulonephritis. Secondary glomerular diseases accounted for 10.3% of the total biopsies, with lupus nephritis being the most common (4.6%) followed by Henoch-Schonlein purpura nephritis and diabetic nephropathy. The most common cause of nephrotic syndrome was MCD (42.1%) followed by MN. Among patients seropositive for hepatitis B or C, IgAN (28.3% and 21.4%, respectively) was the most common cause. Conclusion: IgAN and lupus nephritis were the most common primary and secondary glomerular diseases, respectively. Race, region, and practice patterns may affect renal disease patterns in different cohorts. | Yim, Taehoon; Kim, Sang-Un; Park, Sangmi; Lim, Jeong-Hoon; Jung, Hee-Yeon; Cho, Jang-Hee; Kim, Chan-Duck; Kim, Yong-Lim; Han, Man-Hoon; Kim, Yong-Jin; Choi, Ji-Young; Park, Sun-Hee | Kyungpook Natl Univ, Sch Med, Dept Internal Med, Div Nephrol, 130 Dongdeok Ro, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Pathol, Daegu, South Korea | ; Kim, Yong-Jin/J-2745-2012; Park, Sun-Hee/LMN-0033-2024; Kim, Yong-Lim/AGK-3172-2022; Lim, Jeong-Hoon/ABE-6003-2020; Cho, Jang-hee/ABD-3534-2020 | 58378645800; 57061064900; 57201988114; 55360244300; 57196396467; 7403536291; 8558530700; 55633533600; 57194067936; 56150365500; 7501393222; 7501831741 | jyss1002@hanmail.net;sh-park@knu.ac.kr; | KIDNEY RESEARCH AND CLINICAL PRACTICE | KIDNEY RES CLIN PRAC | 2211-9132 | 2211-9140 | 39 | 1 | SCIE | UROLOGY & NEPHROLOGY | 2020 | 3.667 | 32.0 | 2.54 | 2025-06-25 | 26 | 28 | Biopsy; Glomerulonephritis; Kidney diseases; Nephrotic syndrome | GLOMERULAR-DISEASES; HEPATITIS-B; REGISTRY; GLOMERULONEPHRITIS; FREQUENCY; PATHOLOGY | Biopsy; Glomerulonephritis; Kidney diseases; Nephrotic syndrome | adult; aged; Alport syndrome; anaphylactoid purpura; Article; Churg Strauss syndrome; cohort analysis; controlled study; creatinine blood level; diabetic nephropathy; estimated glomerular filtration rate; female; hepatitis B; hepatitis C; histology; histopathology; human; human tissue; immunoglobulin A nephropathy; kidney biopsy; kidney disease; kidney transplantation; lupus erythematosus nephritis; major clinical study; male; membranoproliferative glomerulonephritis; membranous glomerulonephritis; middle aged; nephrotic syndrome; priority journal; proteinuria; rapidly progressive glomerulonephritis; retrospective study; systemic lupus erythematosus; urinalysis; Wegener granulomatosis | English | 2020 | 2020-03 | 10.23876/j.krcp.19.077 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | The differential effects of anemia on mortality in young and elderly end-stage renal disease patients | Background: The aim of this study was to compare the effect of anemia on clinical outcomes according to age in patients with end-stage renal disease (ESRD). Methods: A total of 3,409 patients from the Clinical Research Center for ESRD were included and divided into three groups by age: age = 60 (n = 1,271). We compared overall and cardiovascular mortality, and all-cause and cardiovascular hospitalization according to mean hemoglobin (Hb) concentration. Results: Among participants >= 60 years of age, the Hb = 12 g/dL group had greater mortality than the 10 = 60 years of age, the HR for all-cause hospitalization for the Hb = 12 g/dL group (HR, 0.544; 95% CI, 0.362-0.820; P = 0.004) However, among participants = 12 g/dL group). Conclusion: The impact of anemia on mortality was more significant in elderly ESRD patients. Strict monitoring and management of anemia should be required for elderly ESRD patients. | Ko, Eun Jeong; Kim, Yong Kyun; Cho, Jang-Hee; Kim, Yon Su; Kang, Shin-Wook; Kim, Nam-Ho; Kim, Yong-Lim; Yang, Chul Woo; Chung, Byung Ha | Catholic Univ Korea, Seoul St Marys Hosp, Coll Med, Dept Internal Med, 222 Banpo Daero, Seoul 06591, South Korea; Catholic Univ Korea, St Vincents Hosp, Coll Med, Dept Internal Med Nephrol, Suwon, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Internal Med, Daegu, South Korea; Seoul Natl Univ, Dept Internal Med, Coll Med, Seoul, South Korea; Yonsei Univ, Dept Internal Med, Coll Med, Seoul, South Korea; Chonnam Natl Univ, Dept Internal Med, Med Sch, Gwangju, South Korea; Clin Res Ctr End Stage Renal Dis, Daegu, South Korea | ; Kim, Jong-Ho/R-1602-2017; Cho, Jang-hee/ABD-3534-2020; Kim, Eun/AAS-6706-2020; Kim, Yon/J-2743-2012; Kim, Yong-Lim/AGK-3172-2022 | 57194720455; 57218459728; 7403536291; 7410205767; 34768359700; 56605215700; 55633533600; 7407743404; 57201863822 | chungbh@catholic.ac.kr; | KIDNEY RESEARCH AND CLINICAL PRACTICE | KIDNEY RES CLIN PRAC | 2211-9132 | 2211-9140 | 39 | 2 | SCIE | UROLOGY & NEPHROLOGY | 2020 | 3.667 | 32.0 | 0.35 | 2025-06-25 | 6 | 6 | Aged; Cardiovascular diseases; Dialysis; Hemoglobin target; Mortality | LEFT-VENTRICULAR HYPERTROPHY; CHRONIC KIDNEY-DISEASE; CARDIOVASCULAR EVENTS; POSITION STATEMENT; DIALYSIS PATIENTS; HEMOGLOBIN; OUTCOMES; FRAILTY; HEMODIALYSIS; HEMATOCRIT | Aged; Cardiovascular diseases; Dialysis; Hemoglobin target; Mortality | albumin; C reactive protein; ferritin; hemoglobin; parathyroid hormone; transferrin; urea; adult; ageism; all cause mortality; anemia; Article; blood sampling; body weight loss; cardiovascular mortality; Charlson Comorbidity Index; clinical outcome; cohort analysis; diabetes mellitus; dialysis; end stage renal disease; female; follow up; glomerulonephritis; hospitalization; human; incidence; major clinical study; male; nutritional status; priority journal; prospective study; renovascular disease; risk factor; survival rate | English | 2020 | 2020-06 | 10.23876/j.krcp.19.120 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Association between mastication-related factors and the prevalence of dementia in Korean elderly women visiting senior centres | Objective The purpose of this study was to evaluate the mastication ability of elderly women by assessing the number of their remaining teeth, subjective mastication comfort, subjective chewing ability of five food items, relative occlusion balance and mastication performance involving in chewing gum. Background Korea has already entered an aged society, issues related to the elderly are also growing; for example, dementia is emerging as a social problem. In addition, oral health of the elderly is very important because it is directly related to nutrient intake. A total of 101 subjects aged >= 65 who attended senior citizen centres in Daegu city provided consent and were included in this study. Materials and methods The Korean version of the Mini-Mental State Examination (MMSE-DS) was used to evaluate cognitive function. To assess the degree of objective mastication, we measured colour changes using a chewing gum and posterior occlusion force using a T-scan (R) system. Results There was an association between mastication ability and cognitive function, indicated by the colour changes in the chewing gum (P < .05). The participants with greater relative posterior occlusion forces had higher MMSE-DS scores than those with stronger relative anterior occlusion forces. There was a positive correlation between cognitive function and posterior occlusion force. Conclusion The elderly having more occlusion force of posterior teeth rather than anterior teeth were associated with better cognitive ability. Therefore, it may be important for the elderly to restore the masticatory function for the posterior part to prevent against deterioration of cognitive function. | Shin, Hae-Eun; Cho, Min-Jeong; Amano, Atsuo; Song, Keun-Bae; Choi, Youn-Hee | Kyungpook Natl Univ, Sch Dent, Dept Prevent Dent, 2177 Dalgubeol Daero, Daegu 41940, South Korea; Kyungpook Natl Univ, Coll Sci & Technol, Dept Dent Hyg, Sangju, South Korea; Osaka Univ, Dept Prevent Dent, Grad Sch Dent, Osaka, Japan; Kyungpook Natl Univ, Inst Translat Res Dent, Daegu, South Korea | 57217335923; 57201842940; 7101649822; 35105905200; 7404777239 | cyh1001@knu.ac.kr; | GERODONTOLOGY | GERODONTOLOGY | 0734-0664 | 1741-2358 | 37 | 2 | SCIE | DENTISTRY, ORAL SURGERY & MEDICINE;GERIATRICS & GERONTOLOGY | 2020 | 2.98 | 32.1 | 1.07 | 2025-06-25 | 16 | 16 | chewing gum; dementia; Korean version of the Mini-Mental Status Examination; masticatory ability; T-scan III (R) | CHEWING ABILITY; POPULATION | chewing gum; dementia; Korean version of the Mini-Mental Status Examination; masticatory ability; T-scan III<sup>®</sup> | Aged; Chewing Gum; Dementia; Female; Humans; Mastication; Prevalence; Republic of Korea; Senior Centers; aged; chewing gum; dementia; female; human; mastication; prevalence; senior center; South Korea | English | 2020 | 2020-06 | 10.1111/ger.12453 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | A high-ductility extruded Mg-Bi-Ca alloy | In order to develop low cost Mg alloy with high ductility, a new micro-alloying rare earth free Mg-1.32Bi-0.72Ca (wt.%, BX11) alloy was successfully fabricated by single step extrusion and its microstructure, texture and tensile properties were investigated and discussed in this study. The as-extruded BX11 alloy demonstrates a weakened texture with parallel to the extrusion direction (ED) and a fine dynamic recrystallized microstructure with both micro-scale Mg2Bi2Ca and Mg3Bi2 particles and nanoscale Mg2Ca and Mg3Bi2 precipitates, exhibiting an excellent tensile elongation of 43% at room temperature. This remarkably high ductility is mainly attributed to the refined microstructure as well as weakened parallel to ED texture. (C) 2019 Elsevier B.V. All rights reserved. | Meng, S. J.; Yu, H.; Fan, S. D.; Kim, Y. M.; Park, S. H.; Zhao, W. M.; You, B. S.; Shin, K. S. | Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China; Korea Inst Mat Sci, Magnesium Dept, Chang Won 51508, South Korea; Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea; Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 08826, South Korea | Yu, Hui/H-8481-2012; Park, Sung-Hyuk/AAE-6726-2022; yu, hui/H-8481-2012; Shin, Kwang Seon/AAE-6177-2021 | 57190763504; 7405855938; 57204618787; 59910977400; 54786002500; 57226049164; 55664007600; 26430446200 | huiyu@vip.126.com; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 261 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 2.39 | 2025-06-25 | 41 | 43 | Mg-Bi-Ca alloy; High ductility; Extrusion; Texture | MECHANICAL-PROPERTIES; MICROSTRUCTURE; TEXTURE; REFINEMENT; EXTRUSION | Extrusion; High ductility; Mg-Bi-Ca alloy; Texture | Binary alloys; Bismuth alloys; Calcium alloys; Ductility; Extrusion; Microalloying; Nanotechnology; Rare earths; Tensile strength; Ternary alloys; Textures; As-extruded; Low costs; Nano scale; Rare-earth-free; Recrystallized microstructures; Refined microstructure; Single-step; Tensile elongation; Magnesium alloys | English | 2020 | 2020-02-15 | 10.1016/j.matlet.2019.127066 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Anti-proliferative and anti-migratory effects of flower-like bimetallic (Au@Pt) nanoparticles | In this work, flower-like bimetallic (Au@Pt) nanoparticles were synthesized by using Carica papaya leaf extract. The optical, structural, and functional properties have been investigated. The UV-vis spectra inferred the formation of bimetallic nanoparticles with highly ordered crystalline structure as revealed by X-ray diffraction analysis. The TEM micrography revealed flower-like bimetallic nanoparticles of 150 +/- 1.02 nm. The cytotoxicity of bimetallic nanoparticles was confirmed against MCF-7 breast cancer cells, which indicates their anti-proliferative effect (IC50 value - 120 +/- 2.32 mu g mL(-1)). The developed flower-like bimetallic nanoparticles also displayed anti-migration effect by wound healing assay, making it sensibly valuable for cancer chemotherapy. (C) 2020 Published by Elsevier B.V. | Princely, Sebastian Xavier; Puja, Patel; Vinita, Manimaran Nadar; Devan, Umapathy; Velangani, Antony Joseph; Sunita, Sinha; Yuvakkumar, Rathinam; Velmurugan, Palanivelu; Ravi, Arumugam Veera; Govarthanan, Muthusamy; Kumar, Ponnuchamy | Alagappa Univ, Dept Anim Hlth & Management, Food Chem & Mol Canc Biol Lab, Sci Campus, Karaikkudi 630003, Tamil Nadu, India; Bharathidasan Univ, Dept Biochem, Mol Oncol Lab, Tiruchirappalli 620024, Tamil Nadu, India; Inst Life Sci, Lab Vasc Immunol, Bhubaneswar 751023, India; Alagappa Univ, Dept Phys, Nanomat Lab, Sci Campus, Karaikkudi 630003, Tamil Nadu, India; Alagappa Univ, Dept Biotechnol, Div Nanomat Biol & Environm Applicat, Lab Microbiol & Marine Biotechnol, Sci Campus, Karaikkudi 630003, Tamil Nadu, India; Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea | Muthusamy, Govarthanan/C-1491-2014; RAVI, ARUMUGAM/ABE-9749-2020; Velmurugan, Palanivel/C-9503-2009; Govarthanan, Muthusamy/C-1491-2014; Ponnuchamy, Kumar/D-3470-2013 | 57215196565; 57204854762; 36446757400; 57209471851; 57211993771; 57215193389; 32267723400; 23567276700; 54384445100; 54881927600; 55173720800 | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 267 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 0.45 | 2025-06-25 | 8 | 7 | Biomaterials; Nanoparticles; Functional; Structural; Anti-migration effect; Cancer | ASSAY | Anti-migration effect; Biomaterials; Cancer; Functional; Nanoparticles; Structural | Biomaterials; Chemotherapy; Diseases; Nanoparticles; X ray powder diffraction; Antiproliferative effect; Bimetallic nanoparticles; Cancer; Crystalline structure; Functional; MCF-7 breast cancer cells; Migration effects; Structural; Synthesis (chemical) | English | 2020 | 2020-05-15 | 10.1016/j.matlet.2020.127491 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Antimicrobial effect of chlorhexidine-releasing porous hydroxyapatite scaffold incorporated with human serum albumin nanoparticles | A novel antibacterial hydroxyapatite (HAp) scaffold was developed by immobilizing chlorhexidine (CHX)loaded human serum albumin (HSA) nanoparticles on its surface via surface charge interaction using polyethylenimine (PEI). The CHX-loaded HSA nanoparticles were fabricated using a desolvation method, coated with PEI molecules (PEI-CHX-HSA), and immobilized via charge interaction on the scaffold surface. The PEI-CHX-HSA nanoparticles were observed to be well-dispersed on the scaffold surface. The agar diffusion test showed a clear inhibition zone of Streptococcus mutans around the nanoparticle-immobilized scaffold. The antibacterial activity of the scaffold was also confirmed in the S. mutans adhesion study using scanning electron and fluorescent microscopy. The results suggest that the HAp scaffold with immobilized PEI-CHX-HSA nanoparticles showed effective drug releasing behavior and antibacterial activity against S. mutans. (C) 2020 Elsevier B.V. All rights reserved. | Kim, Da Hye; Son, Jun Sik; Kwon, Tae-Yub | Kyungpook Natl Univ, Dept Med & Biol Engn, Daegu 41940, South Korea; Korea Text Dev Inst, Daegu 41842, South Korea; Kyungpook Natl Univ, Sch Dent & Inst Biomat Res & Dev, Dept Dent Biomat, Daegu 41940, South Korea | 56623562900; 57225797854; 7202206084 | sonjk1@empas.com;tykwon@knu.ac.kr; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 266 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 0.37 | 2025-06-25 | 6 | 6 | Bioceramics; Particles, nanosize; Hydroxyapatite scaffold; Drug delivery; Human serum albumin; Chlorhexidine | Bioceramics; Chlorhexidine; Drug delivery; Human serum albumin; Hydroxyapatite scaffold; Particles, nanosize | Bioceramics; Controlled drug delivery; Drug delivery; Hydroxyapatite; Nanoparticles; Targeted drug delivery; Anti-bacterial activity; Anti-microbial effects; Chlorhexidine; Drug-releasing behaviors; Fluorescent microscopy; Human serum albumins; Nano-size; Porous hydroxyapatite; Scaffolds | English | 2020 | 2020-05-01 | 10.1016/j.matlet.2020.127479 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Effect of tin (II and IV) iodide doping on organic-inorganic bismuth (III) iodide perovskite | Herein, effects of doping methylamine bismuth iodide (MBI, (CH3NH3)(3)Bi2I9), a lead-free perovskite halide material, with bismuth (III) iodide with the molar equivalent of tin (II or IV) iodides are investigated. The doping changes optical properties, surface chemical states, and energy band structure of MBI. SnI4 doping shifts the Fermi level toward the valence band, while SnI2 doping shifts it toward the conduction band. Our result demonstrates that Fermi level of a halide perovskite can be modified by doping. (C) 2019 Elsevier B.V. All rights reserved. | Yun, Yeonghun; Kim, Dokyum; Park, Byungjin; Heo, Young-Woo; Lee, Joon-Hyung; Lee, Sangwook | Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea | Yun, Yeonghun/KRP-9208-2024; Lee, Sangwook/O-9166-2015 | 57202548363; 57212308311; 57212303331; 7004298542; 57204923460; 57203597324 | joonlee@knu.ac.kr;wook2@knu.ac.kr; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 262 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 0.3 | 2025-06-25 | 5 | 5 | Perovskite; Halide; Fermi level; Doping | SOLAR-CELLS; LEAD-FREE; EFFICIENCY; METHYLAMMONIUM; DEPOSITION | Doping; Fermi level; Halide; Perovskite | Band structure; Doping (additives); Fermi level; Lead compounds; Optical properties; Perovskite; Tin; Tin compounds; Bismuth iodide; Bismuth(III); Halide; Halide perovskites; Iodide doping; Lead-free perovskites; Molar equivalent; Surface chemical state; Bismuth compounds | English | 2020 | 2020-03-01 | 10.1016/j.matlet.2019.127166 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Fabrication of very-high-strength pure copper with fine grain structure through multi-axial diagonal forging | This paper demonstrates the application of multi-axial diagonal forging (MADF) for fabricating very-high-strength pure Cu with a fine-grained microstructure. Pure Cu subjected to 1 MADF cycle, which comprises 6 passes of multi-axial forging operations and 6 subsequent passes of diagonal forging operations, has a tensile yield strength, ultimate tensile strength, and elongation of 397 MPa, 436 MPa, and 15.7%, respectively. This high strength is attributed to the combined effects of considerably refined grains resulting from continuous dynamic recrystallization during MADF and high dislocation density induced by large imposed strains. With increasing number of MADF cycles, the average grain size and microstructural homogeneity of the multi-axial diagonal forged samples gradually decreases and improves, respectively. (C) 2020 Elsevier B.V. All rights reserved. | Lee, Jae Kun; Kwon, Sang-Chul; Jeong, Hyo-Tae; Han, Sang-Ho; Park, Sung Hyuk | Kyungpook Natl Univ, Daegu 41566, South Korea; Poongsan, Angang 38026, South Korea; Gangneung Wonju Natl Univ, Kangnung 25457, South Korea; Korea Inst Mat Sci, Chang Won 51508, South Korea | Park, Sung-Hyuk/AAE-6726-2022 | 57215860790; 57205260471; 57667200800; 55487891700; 54786002500 | sh.park@knu.ac.kr; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 269 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 0.37 | 2025-06-25 | 4 | 5 | Pure Cu; Metal forming and shaping; Multi-axial diagonal forging; Microstructure; Tensile strength | MECHANICAL-PROPERTIES; REFINEMENT | Metal forming and shaping; Microstructure; Multi-axial diagonal forging; Pure Cu; Tensile strength | Copper; Dynamic recrystallization; Fabrication; Grain size and shape; Microstructure; Upsetting (forming); Continuous dynamic recrystallization; Fine-grained microstructure; High dislocation density; Metal forming and shaping; Microstructural homogeneity; Pure Cu; Tensile yield strength; Ultimate tensile strength; Tensile strength | English | 2020 | 2020-06-15 | 10.1016/j.matlet.2020.127663 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Formation of five-fold twinning electron diffraction pattern and twinning bands in bulk CuIn3Se5 via hot deformation | We analyzed bulk CuIn3Se5 alloys via transmission electron microscopy (TEM). The high-resolution TEM micrographs showed many twinning bands and doublet periodicity of the (002) lattice planes and cor-responding fast Fourier transform patterns revealed the superstructure reflections. The selected area electron diffraction pattern showed the nearly five-fold rotation diffraction spots, which resulted from the four-fold rotation twinning at one point and other twinning bands. The TEM results indicated the CuIn3Se5 alloy deformed by hot press had many multiple-twinned crystallites as well as a high density of twinning in the {1 12} planes. (C) 2020 Elsevier B.V. All rights reserved. | Kim, Hyunji; Cho, Hyung Koun; Lee, Ho Seong | Kyungpook Natl Univ, Sch Mat Sci & Engn, 80 Daehak Ro, Daegu 41566, South Korea; Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, 2066 Seobu Ro, Suwon 16419, Gyeonggi Do, South Korea | ; Cho, Hyung Koun/P-2007-2017 | 57208408040; 35236454300; 55706810400 | hs.lee@knu.ac.kr; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 276 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 0 | 2025-06-25 | 0 | 0 | Crystal structure; Defect; Electron microscopy; Semiconductor; Microstructure | CUINSE2; SINGLE; MICROSCOPY; CRYSTAL; ROUTE | Crystal structure; Defect; Electron microscopy; Microstructure; Semiconductor | Copper alloys; Crystallites; Diffraction patterns; Electron diffraction; Fast Fourier transforms; High resolution transmission electron microscopy; Interferometry; CuIn3Se5; Diffraction spots; High-resolution TEM; Lattice plane; Selected area electron diffraction pattern; Superstructure reflections; Indium alloys | English | 2020 | 2020-10-01 | 10.1016/j.matlet.2020.128251 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Interface modification using a post-treatment-free heteropolyacid for effective charge selective bilayer formation in perovskite solar cells | We rationally utilized a solution-processed post-heat treatment-free heteropolyacid compound, phosphomolybdic acid hydrate (PMAH) as a charge selective interface modifier for poly(3,4-ethylene dioxythiophene): polystyrene sulfonate (PEDOT:PSS) in inverted perovskite solar cells (PSCs). The fabricated PSCs with PMAH/PEDOT:PSS bilayer exhibited significant improvement in the power conversion efficiency (PCE) (similar to 12%) with superior long-term air-stability as compared to PEDOT:PSS based PSCs (9.8%). The measured photovoltaic performance demonstrates that the inclusion of PMAH as an interface to ITO and PEDOT:PSS is an efficient way of realizing stable and efficient PSCs. (C) 2020 Published by Elsevier B.V. | Saianand, Gopalan; Gopalan, Anantha-Iyengar; Roy, Vellaisamy A. L.; Wilson, Gregory J.; Jakmunee, Jaroon; Sonar, Prashant; Lin, Liangyou; Kim, Sae-Wan; Kang, Shin-Won | Univ Newcastle, Fac Sci, Global Ctr Environm Remediat GCER, Callaghan, NSW 2308, Australia; CSIRO Energy, Newcastle Energy Ctr, 10 Murray Dwyer Cct, Mayfield West, NSW 2304, Australia; Kyungpook Natl Univ, Dev Ctr, Daegyeong Reg Infrastruct Technol, Daegu 41566, South Korea; Univ Glasgow, James Watt Sch Engn, Glasgow G12 8QQ, Lanark, Scotland; Univ Newcastle, Fac Engn & Built Environm, Sch Engn, Callaghan, NSW 2308, Australia; Chiang Mai Univ, Fac Sci, Ctr Adv Mat Printed Elect & Sensors, Mat Sci Res Ctr, Chiang Mai 50200, Thailand; Queensland Univ Technol QUT, Sch Chem & Phys, 2 George St, Brisbane, Qld 4001, Australia; Hubei Univ, Sch Mat Sci & Engn, Hubei Key Lab Polymer Mat, Wuhan 430062, Peoples R China; Kyungpook Natl Univ, Coll IT Engn, Sch Elect Engn, Daegu 41566, South Korea | ; Jakmunee, Jaroon/F-5032-2015; Sonar, Prashant/E-8827-2011; Lin, Liangyou/GNM-9652-2022; Wilson, Gregory/G-3005-2013; VELLAISAMY, Arul Lenus Roy/NDY-9741-2025; Gopalan, Saianand/J-6000-2019 | 38362265400; 57191999779; 7005870324; 55863324100; 6701614625; 8523056200; 57192398675; 56808646500; 7405682695 | SaiAnand.Gopalan@newcastle.edu.au;swkang@knu.ac.kr; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 277 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 0.15 | 2025-06-25 | 1 | 2 | Perovskite solar cells; PEDOT:PSS; Heteropolyacid; Polyoxometalates; Charge selective modifier | SULFONATED POLYANILINE; TRANSPORT LAYER; PERFORMANCE; POLYMER; ENHANCEMENT; STRATEGY; OXIDE | Charge selective modifier; Heteropolyacid; PEDOT:PSS; Perovskite solar cells; Polyoxometalates | Conducting polymers; Perovskite; Interface modification; Phosphomolybdic acid; Photovoltaic performance; Poly(3 ,4-ethylenedioxythiophene); Polystyrene sulfonate; Post heat-treatment; Power conversion efficiencies; Solution-processed; Perovskite solar cells | English | 2020 | 2020-10-15 | 10.1016/j.matlet.2020.128393 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Multicolor-emitting carbon dots from Malus floribunda and their interaction with Caenorhabditis elegans | The Malus floribunda fruit extract and aqueous ammonia have been employed as carbon and nitrogen resource material, respectively to synthesize nitrogen-doped carbon dots (N-CDs) by a facile one-step hydrothermal method. The N-CDs exhibit excellent lattice fringes with a d-spacing of 0.21 nm. The NCDs have tunable fluorescence emission with redshift from 390 to 501 nm as the excitation wavelength increased from 300 to 460 nm. Finally, N-CDs have been used as a fluorescent probe to image Caenorhabditis elegans (nematode) in vivo model. It showed low cytotoxicity and remarkable performance due to its good fluorescence quantum yield (19%). Moreover, the obtained N-CDs are potential candidates for biomedicine-related studies. (C) 2019 Elsevier B.V. All rights reserved. | Atchudan, Raji; Edison, Thomas Nesakumar Jebakumar Immanuel; Perumal, Suguna; Vinodh, Rajangam; Lee, Yong Rok | Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, South Korea; Kyungpook Natl Univ, Dept Appl Chem, Daegu 41566, South Korea; Pusan Natl Univ, Sch Elect & Comp Engn, Busan 46241, South Korea | Lee, Yong/K-6373-2015; Jebakumar Immanuel Edison, Thomas Nesakumar/N-8909-2015; perumal, suguna/N-9075-2017; Edison, Thomas/N-8909-2015; RAJI, ATCHUDAN/C-9904-2017 | 26648054700; 6506181821; 56673798900; 35727964800; 57330662900 | atchudanr@yu.ac.kr;yrlee@yu.ac.kr; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 261 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 1.64 | 2025-06-25 | 29 | 30 | Malus floribunda; Hydrothermal method; Carbon dots; Tunable fluorescence; Caenorhabditis elegans; In vivo imaging | GRAPHENE QUANTUM DOTS; GREEN SYNTHESIS; FLUORESCENT-PROBE; FACILE SYNTHESIS; FE3+; ION; EXCITATION; EMISSION; SHEETS; WATER | Caenorhabditis elegans; Carbon dots; Hydrothermal method; In vivo imaging; Malus floribunda; Tunable fluorescence | Ammonia; Carbon; Doping (additives); Nitrogen; Caenorhabditis elegans; Carbon dots; Hydrothermal methods; In-Vivo imaging; Malus floribunda; Fluorescence | English | 2020 | 2020-02-15 | 10.1016/j.matlet.2019.127153 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Role of oxygen atmosphere on fabrication and photovoltaic properties of amorphous Sn-I-O electron transport layer | Amorphous tin-indium-oxide (TIO) thin films as an electron transport layer (ETL) for perovskite solar cells (PSCs), were grown under controlled oxygen partial pressure (PO2). The effect of PO2 during TIO deposition on the photovoltaic response of TIO-ETL-based PSC was evaluated. A device of TiCl4 treated TIO-77 at.% deposited under lower PO2 shows improved shunt resistance and exhibited the best power conversion efficiency of 15%, which is greater than the devices deposited at high PO2. This work deciphers the importance of deposition atmosphere in fabricating ETLs for PSCs. (C) 2020 Elsevier B.V. All rights reserved. | Vidyasagar, Devthade; Han, Jeong Woo; Baek, Seungtae; Yun, Yeonghun; Yun, Jeongcheol; Jo, Hyunil; Yun, Yonghan; Heo, Young-Woo; Lee, Sangwook | Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea | Lee, Sangwook/O-9166-2015; Yun, Yeonghun/KRP-9208-2024; Vidyasagar, Devthade/O-3930-2015 | 57201674442; 59475446600; 57203532105; 57202548363; 57216759517; 57216761469; 57204805099; 7004298542; 57203597324 | ywheo@knu.ac.kr;wook2@knu.ac.kr; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 273 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 0.15 | 2025-06-25 | 1 | 2 | Tin-indium-oxide; Perovskite solar cell; Electron transport layer; Thin film | PEROVSKITE SOLAR-CELLS; BAND-EDGE; EFFICIENT; OXIDE | Electron transport layer; Perovskite solar cell; Thin film; Tin-indium-oxide | Deposition; Electron transport properties; Fabrication; Indium compounds; Oxide films; Oxygen; Perovskite; Perovskite solar cells; Photovoltaic effects; Tin oxides; Deposition atmosphere; Electron transport layers; Oxygen atmosphere; Oxygen partial pressure; Photovoltaic property; Photovoltaic response; Power conversion efficiencies; Shunt resistances; Chlorine compounds | English | 2020 | 2020-08-15 | 10.1016/j.matlet.2020.127960 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Utilization of funnel-shaped ivory flowers of Candelabra cactus for zinc oxide nanoparticles synthesis and their in-vitro anti-cancer and antibacterial activity | The present study reports an eco-friendly phytosynthesis of zinc oxide nanoparticles (ZnONPs) using Candelabra cactus flower extract. The structural and functional properties of the synthesized ZnONPs were examined through various instrumentation. Transmission electron microscopy analysis revealed sphere-shaped ZnONPs between 10 and 30 nm in size. The synthesized ZnONPs showed growth inhibiting activity of both Gram-positive and Gram-negative bacteria. Acridine orange ethidium bromide (AO/EB) and Hoechst 33,342 staining studies revealed apoptotic bodies and chromatin condensation in the MCF-7 cancer cells. (C) 2020 Elsevier B.V. All rights reserved. | Govarthanan, M.; Srinivasan, P.; Selvankumar, T.; Janaki, V; Al-Misned, Fahad A.; El-Serehy, Hamed A.; Kim, Woong; Kamala-Kannan, S. | Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea; Mahendra Arts & Sci Coll Autonomous, PG & Res Dept Biotechnol, Namakkal 637501, Tamil Nadu, India; Sri Sarada Coll Women, Dept Chem, Salem 636016, Tamil Nadu, India; King Saud Univ, Coll Sci, Dept Zool, Riyadh 11451, Saudi Arabia; Jeonbuk Natl Univ, Coll Environm & Bioresource Sci, Div Biotechnol, Iksan 54596, South Korea | Govarthanan, Muthusamy/C-1491-2014; Venkatachalam, Janaki/JZT-7249-2024; Muthusamy, Govarthanan/C-1491-2014; Kamala-Kannan, Seralathan/JZT-7242-2024; El-Serehy, Hamed/GVT-7938-2022 | 54881927600; 57190217427; 24485017700; 57193520536; 57220907458; 6504349387; 55581636400; 55664148800 | gova.muthu@gmail.com;elshine@knu.ac.kr;kannan@jbnu.ac.kr; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 273 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 2.01 | 2025-06-25 | 38 | 39 | Antibacterial; Cytotoxicity; Candelabra cactus; Flower extract; MCF-7 cells | ZNO NANOPARTICLES; GREEN SYNTHESIS; GROWTH; MECHANISM | Antibacterial; Candelabra cactus; Cytotoxicity; Flower extract; MCF-7 cells | Bacteria; Diseases; High resolution transmission electron microscopy; II-VI semiconductors; Nanoparticles; Zinc oxide; ZnO nanoparticles; Anti-bacterial activity; Chromatin condensation; Ethidium bromide; Flower extracts; Functional properties; Gram-negative bacteria; Transmission electron; Zinc oxide nanoparticles; Synthesis (chemical) | English | 2020 | 2020-08-15 | 10.1016/j.matlet.2020.127951 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Utilization of marine seaweed Spyridia filamentosa for silver nanoparticles synthesis and its clinical applications | The present study describes an environment-friendly biosynthesis of silver nanoparticles from marine red algae Spyridia filamentosa through the bio-reduction process. S. filamentosa have significantly high amounts of phytochemicals and secondary metabolites responsible for the formation of AgNPs. UV-Vis spectra results showed corresponding AgNPs peak at 420 nm. Transmission electron micrographs showed well dispersed spherical particles with the 20-30 nm in size. FT-IR and XRD results revealed the characteristics of AgNPs. Further, the AgNPs displayed potential antibacterial activity against Staphylococcus sp. (KC688883) and Klebsiella sp. (KC899845), and anticancer activity against MCF-7 cells. (C) 2019 Elsevier B.V. All rights reserved. | Valarmathi, N.; Ameen, Fuad; Almansob, A.; Kumar, P.; Arunprakash, S.; Govarthanan, M. | Arignar Anna Govt Arts Coll, Dept Bot, Namakkal 637002, Tamil Nadu, India; King Saud Univ, Coll Sci, Dept Bot & Microbiol, Riyadh 11451, Saudi Arabia; Alagappa Univ, Dept Anim Hlth & Management, Karaikkudi 630003, Tamil Nadu, India; Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea | Govarthanan, Muthusamy/C-1491-2014; Ameen, Fuad/N-8881-2017; Muthusamy, Govarthanan/C-1491-2014; Ponnuchamy, Kumar/D-3470-2013; Almansob, Abobakr/JUU-2517-2023 | 57222514477; 56664337800; 57209109324; 55173720800; 54881927900; 54881927600 | arunbot2003@rediffmail.com;gova.muthu@gmail.com; | MATERIALS LETTERS | MATER LETT | 0167-577X | 1873-4979 | 263 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;PHYSICS, APPLIED | 2020 | 3.423 | 32.2 | 5.07 | 2025-06-25 | 83 | 94 | Antibacterial; Apoptopic; MCF-7 cells: Seaweed; Spyridia filamentosa | ANTIBACTERIAL; BIOSYNTHESIS; EXTRACT | Antibacterial; Apoptopic; MCF-7 cells: Seaweed; Spyridia filamentosa | Bacteria; Biochemistry; Marine applications; Metabolites; Metal nanoparticles; Seaweed; Synthesis (chemical); Anti-bacterial activity; Antibacterial; Anticancer activities; Apoptopic; MCF-7 cells; Secondary metabolites; Spyridia filamentosa; Transmission electron micrograph; Silver nanoparticles | English | 2020 | 2020-03-15 | 10.1016/j.matlet.2019.127244 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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