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Mixed-dimensional stacked nanocomposite structures for a specific wavelength-selectable ambipolar photoresponse

Nano Research 2024年第6期17卷 5549-5558页

作者： Young Jae Park Jaeho Shim Joo Song Lee Kyu Seung Lee ji-yeon kim Kang Bok Ko Sang-Youp Yim Seongjun kim Hoon-Kyu Shin Donghee Park Yong Ju Yun Dong Ick Son Institute of Advanced Composite Materials Korea Institute of Science and TechnologyJeollabuk-do 55324Republic of Korea National Institute for Nanomaterials Technology Pohang University of Science and TechnologyGyeongsangbuk-do 37673Republic of Korea Department of Semiconductor Science and Technology Semiconductor Physics Research CenterJeonbuk National UniversityJeonju 54896Republic of Korea Advanced Photonics Research Institute Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea Center for Opto-Electronic Materials and Devices Post-Silicon Semiconductor InstituteKorea Institute of Science and TechnologySeoul 02792Republic of Korea Graduate School of Energy and Environment(KU-KIST Green School) Korea UniversitySeoul 02841Republic of Korea KIST School Department of Nanomaterials and Nano ScienceUniversity of Science and Technology(UST)Daejeon 34113Republic of Korea

Mixed-dimensional composite structures using zero-dimensional(0D)quantum dots(QDs)and two-dimensional(2D)transition metal dichalcogenides(TMDs)materials are expected to attract great interest in optoelectronics due to the potential to generate new optical ***,we report on the unique optical characteristics of a devices with mixed dimensional vertically stacked structures based on tungsten diselenide(WSe_(2))/CdSeS QDs monolayer/molybdenum disulfide(MoS_(2))(2D/0D/2D).Specifically,it exhibits an ambipolar photoresponse characteristic,with a negative photoresponse observed in the 400-600 nm wavelength range and a positive photoresponse appeared at 700 nm *** resulted in the high negative responsivity of up to 52.22 mA·W^(−1)under 400 nm,which is 163 times higher than that of the photodetector without CdSeS *** also demonstrated the negative photoresponse,which could be due to increased carrier collision probability and non-radiative *** modeling and simulation reveal that Auger recombination among the types of non-radiative recombination is the main cause of negative photocurrent ***,we discovered ambipolar photoresponse near a specific wavelength corresponding to the energy of quantum *** study revealed interesting phenomenon in the mixed low-dimensional stacked structure and paved the way to exploit it for the development of innovative photodetection materials as well as for optoelectronic applications.

关键词： mixed-dimension quantum dot heterostructure photodetector ambipolar photoresponse

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Impact of Fusobacterium nucleatum in the gastrointestinal tract on natural killer cells

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World Journal of Gastroenterology 2021年第29期27卷 4879-4889页

作者： yeon ji kim Bu Kyung kim Seun Ja Park Jae Hyun kim Institute of Gastroenterology Kosin University College of MedicineBusan 49267Spain Department of Internal Medicine Kosin University College of MedicineBusan 49267South Korea

BACKGROUND Gut microbial dysbiosis contributes to the development and progression of colorectal cancer(CRC).Natural killer(NK)cells are involved in early defense mechanisms to kill infective pathogens and tumor cells by releasing chemokines and *** better understand the relationship between the gut microbiome and CRC,it was hypothesized here that a high abundance of Fusobacterium nucleatum(***)in the gastrointestinal tract could cause reduced NK cell *** To identify associations between gastrointestinal tract *** levels and NK cell *** In vitro experiments were performed on NK cells treated with ***,Peptostreptococcus anaerobius,and Parvimonas micra to identify the effects of gut microbiome species on NK *** 24 and 48 h of treatment,NK cell counts were *** parallel studies,C57BL/6 mice were given broadspectrum antibiotics in their drinking water to reduce resident gut *** 3 wk,the mice received the various bacterial species or phosphate-buffered saline(PBS)via oral gavage every 2 d for 6 *** the study end,blood samples were acquired to perform NK cell activity assessment and cytokine *** tissues were collected and analyzed via immunohistochemistry(IHC).RESULTS The data show that after 3 wk of broad-spectrum antibiotic treatment,levels of total bacteria and *** were markedly decreased in *** of *** significantly decreased NK cell activity relative to the activities of cells from mice treated with antibiotics only and *** administration of *** decreased the proportion of NK46+cells based on IHC staining and increased the production of interleukin-1βand tumor necrosis factor-α.CONCLUSION High levels of *** in the gastrointestinal tract reduced NK cell activity in mice,and the decrease in NK cell activity might be affected by increased proinflammatory cytokines after *** treatment.

关键词： Fusobacterium nucleatum Natural killer cells Colorectal cancer

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Microbiology and risk factors for gram-positive Cocci bacteremia in biliary infections

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Hepatobiliary & Pancreatic Diseases International 2020年第5期19卷 461-466页

作者： Ik Hyun Jo yeon-ji kim Woo Chul Chung Jaeyoung kim Seonhoo kim Eun Sun Lim Honggeun Ahn Seong Yul Ryu Division of Gastroenterology Department of Internal MedicineSt.Vincent’s HospitalCollege of MedicineThe Catholic University of KoreaSuwon 16247Korea

Background:The rapid antibiotics treatment targeted to a specific pathogen can improve clinical outcomes of *** aimed to evaluate the clinical characteristics and outcomes of biliary septicemia caused by cholangitis or cholecystitis according to causative ***:We performed a retrospective cohort study in 151 patients diagnosed with cholangitis or cholecystitis with bacterial septicemia from January 2013 to December *** patients showed clinical evidence of biliary tract infection and had blood isolates that demonstrated ***:Gram-negative,gram-positive,and both types of bacteria caused 84.1%(127/151),13.2%(20/151),and 2.6%(4/151)episodes of septicemia,*** most common infecting organisms were Escherichia coli among gram-negative bacteria and Enterococcus species(Enterococcus casseliflavus and Enterococcus faecalis)among gram-positive *** were no differences in mortality,re-admission rate,and need for emergency decompression procedures between the gram-positive and gram-negative septicemia *** univariate analysis,previous gastrectomy history was associated with gram-positive *** analysis also showed that previous gastrectomy history was strongly associated with gram-positive septicemia(Odds ratio=5.47,95%CI:1.19–25.23;P=0.029).Conclusions:Previous gastrectomy history was related to biliary septicemia induced by gram-positive *** information would aid the choice of empirical antibiotics.

关键词： Cholangitis Cholecystitis Septicemia Gram-positive bacterial infections

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Comparative detection of syndecan-2 methylation in preoperative and postoperative stool DNA in patients with colorectal cancer

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世界胃肠外科杂志:英文版(电子版) 2023年第9期15卷 2032-2041页

作者： ji Hyeong Song Tae Jeong Oh Sungwhan An Kyung Ha Lee ji yeon kim jin Soo kim Department of Surgery Chungnam National University Sejong HospitalSejong 30099South Korea Genomictree Inc.Daejeon 34027South Korea Department of Surgery College of MedicineChungnam National UniversityDaejeon 35015South Korea

BACKGROUND Early detection of colorectal cancer(CRC)is essential to reduce cancer-related morbidity and *** DNA(sDNA)testing is an emerging method for early CRC ***-2(SDC2)methylation is a potential biomarker for the sDNA *** DNA methylation is an early epigenetic event during tumorigenesis and can occur in the normal colonic mucosa during aging,which can compromise the sDNA test *** In this prospective study,we enrolled 151 patients with CRC who underwent curative surgical resection between September 2016 and May *** stool samples were collected from 123 patients and postoperative samples were collected from 122 patients.A total of 104 samples were collected from both preoperative and postoperative *** promoter methylation of SDC2 in sDNA was assessed using linear target enrichment quantitative methylation-specific real-time polymerase chain *** parameters were analyzed using the results of SDC2 *** Detection rates of SDC2 methylation in the preoperative and postoperative stool samples were 88.6%and 19.7%,*** tumor size(3 cm,P=0.019)and advanced T stage(T3–T4,P=0.033)were positively associated with the detection rate of SDC2 methylation before *** sex was associated with false positives after surgery(P=0.030).Cycle threshold(CT)values were significantly decreased postoperatively compared with preoperative values(P<0.001).The postoperative negative conversion rate for preoperatively methylated SDC2 was 79.3%(73/92).CONCLUSION Our results suggested that the SDC2 methylation test for sDNA has acceptable sensitivity and ***,small size and early T stage tumors are associated with a low detection rate of SDC2 *** the cycle threshold values significantly decreased after surgery,SDC2 methylation test for sDNA might have a diagnostic value for CRC.

关键词： Biomarkers DNA methylation Syndecan-2 Colorectal cancer

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Unilateral pleuroparenchymal fibroelastosis as a rare form of idiopathic interstitial pneumonia:A case report

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World Journal of Clinical Cases 2020年第18期8卷 4186-4192页

作者： Jae-Ha Lee Hang-Jea Jang jin-Han Park Hyun-Kuk kim Sunggun Lee ji-yeon kim Seong-Ho kim Department of Internal Medicine Haeundae Paik HospitalInje University College of MedicineBusan 48108South Korea Department of Pathology Haeundae Paik HospitalInje University College of MedicineBusan 48108South Korea

BACKGROUND Pleuroparenchymal fibroelastosis(PPFE)is a rare idiopathic interstitial pneumonia characterized by predominantly upper lobe involvement with pleural fibrosis and subjacent parenchymal ***,there have been increasing reports of PPFE,and PPFE might coexist with other interstitial lung diseases in the lower lobe and upper ***,cases of unilateral PPFE are *** SUMMARY A 75-year-old Korean male presented to our hospital with chronic dry cough and exertional *** patient’s symptoms started 6 mo previously and had been gradually *** the time of presentation,he felt dyspnea when walking at his own *** findings suggested PPFE,but the lesion was localized in the upper lobe of the right *** multidisciplinary discussion,a transbronchial lung biopsy in the right upper lobe revealed collapsed alveoli with parenchymal fibroelastosis,and elastic van Gieson staining demonstrated septal elastosis with intra-alveolar collagenosis,which met the histopathologic criteria of definite *** multidisciplinary discussion in an experienced interstitial lung disease center,we confirmed the diagnosis of unilateral ***,we confirmed the progression of PPFE on radiologic findings during the followup *** Clinicians should consider PPFE,even in cases with unilateral,predominantly upper lung involvement in interstitial lung disease patients through multidisciplinary discussion.

关键词： Interstitial lung disease Pleuroparenchymal fibroelastosis Progression Unilateral Multidisciplinary discussion Case report

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Different risk factors for advanced colorectal neoplasm in young adults

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World Journal of Gastroenterology 2016年第13期22卷 3611-3620页

作者： ji yeon kim Yoon Suk Jung Jung Ho Park Hong Joo kim Yong Kyun Cho Chong Il Sohn Woo Kyu Jeon Byung Ik kim Kyu Yong Choi Dong Il Park Comprehensive Health Care Center Korea Cancer Center Hospital Korea Institute of Radiological and Medical Sciences Department of Internal Medicine Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine

AIM: To compare the risk of developing advanced colorectal neoplasm(ACRN) according to age in ***: A total of 70428 Koreans from an occupational cohort who underwent a colonoscopy between 2003 and 2012 at Kangbuk Samsung Hospital were retrospectively selected. We evaluated and compared odds ratios(OR) for ACRN between the young-adults(YA < 50 years) and in the older-adults(OA ≥ 50 years). ACRN was defined as an adenoma ≥ 10 mm in diameter, adenoma with any component of villous histology, high-grade dysplasia, or invasive ***: In the YA group, age(OR = 1.08, 95%CI: 1.06-1.09), male sex(OR = 1.26, 95%CI: 1.02-1.55), current smoking(OR = 1.37, 95%CI: 1.15-1.63), family history of colorectal cancer(OR = 1.46, 95%CI: 1.01-2.10), diabetes mellitus related factors(OR = 1.27, 95%CI: 1.06-1.54), obesity(OR = 1.23, 95%CI: 1.03-1.47), CEA(OR = 1.04, 95%CI: 1.01-1.09) and low-density lipoprotein-cholesterol(OR = 1.01, 95%CI: 1.01-1.02) were related with an increased risk of ACRN. However, age(OR = 1.08, 95%CI: 1.06-1.09), male sex(OR = 2.12, 95%CI: 1.68-2.68), current smoking(OR = 1.38, 95%CI: 1.12-1.71), obesity(OR = 1.34, 95%CI: 1.09-1.65) and CEA(OR = 1.05, 95%CI: 1.01-1.09) also increased the risk of ACRN in the OA ***: The risks of ACRN differed based on age group. Different colonoscopic screening strategies are appropriate for particular subjects with risk factors for ACRN, even in subjects younger than 50 years.

关键词： Young-adult Advanced colorectal neoplasm Risk factors Age Metabolic abnormality

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Acute idiopathic pancreatitis in pregnancy:A case study

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World Journal of Gastroenterology 2014年第43期20卷 16364-16367页

作者： ji yeon kim Sung Hoon Jung Hyung Wook Choi Dong jin Song Cheol Yoon Jeong Dong Hyun Lee Il Soon Whang Department of Internal Medicine Cheil General Hospital and Women’s Healthcare CenterKwandong University College of MedicineSeoul KS013South Korea

Acute pancreatitis during pregnancy is a rare event,and can be associated with high maternal mortality and fetal *** disease is thought to be the most common causative factor of acute pancreatitis,but,in many cases,the cause remains *** report a case of a 36-year-old woman at 35 wk of gestation,who presented with severe pain confined to the upper abdomen and radiating to the *** patient was diagnosed with acute idiopathic pancreatitis,which was managed conservatively;she recovered within several days and then delivered a healthy *** it is important to consider acute pancreatitis when a pregnant woman presents with upper abdominal pain,nausea and vomiting in order to improve fetal and maternal outcomes for patients with acute pancreatitis.

关键词： Acute pancreatitis Pregnancy Pancreatitis in pregnancy Idiopathic Idiopathic acute pancreatitis

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Trend of Developing Aqueous Liquid and Gel Electrolytes for Sustainable,Safe,and High‑Performance Li‑Ion Batteries

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Nano-Micro Letters 2024年第1期16卷 17-34页

作者： Donghwan ji Jaeyun kim School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences&Technology(SAIHST)Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Biomedical Institute for Convergence at SKKU(BICS) Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Institute of Quantum Biophysics(IQB) Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Present Address:Department of NanoEngineering University of California San DiegoLa JollaSan DiegoCA 92093USA

Current lithium-ion batteries(LIBs)rely on organic liquid electrolytes that pose significant risks due to their flammability and *** potential for environmental pollution and explosions resulting from battery damage or fracture is a critical ***-based(aqueous)electrolytes have been receiving attention as an alternative to organic ***,a narrow electrochemicalstability window,water decomposition,and the consequent low battery operating voltage and energy density hinder the practical use of aqueous ***,developing novel aqueous electrolytes for sustainable,safe,high-performance LIBs remains *** Review first commences by summarizing the roles and requirements of electrolytes–separators and then delineates the progression of aqueous electrolytes for LIBs,encompassing aqueous liquid and gel electrolyte development trends along with detailed principles of the *** aqueous electrolytes are progressed based on strategies using superconcentrated salts,concentrated diluents,polymer additives,polymer networks,and artificial passivation layers,which are used for suppressing water decomposition and widening the electrochemical stability window of water of the *** addition,this Review discusses potential strategies for the implementation of aqueous Li-metal batteries with improved electrolyte–electrode interfaces.A comprehensive understanding of each strategy in the aqueous system will assist in the design of an aqueous electrolyte and the development of sustainable and safe high-performance batteries.

关键词： Lithium-ion battery(LIB) Aqueous electrolyte Gel electrolyte Electrochemical stability window Li dendrite

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Intelligent structured nanocomposite adhesive for bioelectronics and soft robots

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Nano Research 2024年第2期17卷 534-549页

作者： yeon Soo Lee Min-Seok kim Da Wan kim Changhyun Pang School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Mechanical Metrology Group Korea Research Institute of Standards and ScienceDaejeon 34113Republic of Korea Department of Electronic Engineering Korea National University of TransportationChungbuk 27469Republic of Korea Samsung Advanced Institute for Health Sciences and Technology Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea

The remarkable functionality of biological systems in detecting and adapting to various environmental conditions has inspired the design of the latest electronics and robots with advanced *** review focuses on intelligent bio-inspired strategies for developing soft bioelectronics and robotics that can accommodate nanocomposite adhesives and integrate them into biological *** underlying principles of the material and structural design of nanocomposite adhesives were investigated for practical applications with excellent functionalities,such as soft skin-attachable health care sensors,highly stretchable adhesive electrodes,switchable adhesion,and untethered soft *** addition,we have discussed recent progress in the development of effective fabrication methods for micro/nanostructures for integration into devices,presenting the current challenges and prospects.

关键词： biomimetics bio-adhesive switchable adhesion bioelectronics nanocomposite soft robotics

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Quality of life outcomes including neuropathy-associated scale from a phase II,multicenter,randomized trial of eribulin plus gemcitabine versus paclitaxel plus gemcitabine as first-line chemotherapy for HER2-negative metastatic breast cancer:Korean Cancer Study Group Trial(KCSG BR13-11)

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Cancer Communications 2019年第1期39卷 271-278页

作者： ji-yeon kim Seri Park Seock-Ah Im Sung-Bae kim Joohyuk Sohn Keun Seok Lee Yee Soo Chae Ki Hyeong Lee Jee Hyun kim Young-Hyuck Im Tae-Yong kim Kyung-Hun Lee jin-Hee Ahn Gun Min kim In Hae Park Soo Jung Lee Hye Sook Han Se Hyun kim Kyung Hae Jung yeon Hee Park Korean Cancer Study Group Division of Hematology-Oncology Department of MedicineSamsung Medical CenterSungkyunkwan University School of Medicine81 Irwon-roGangnam-guSeoul 06351South Korea Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences and TechnologySungkyunkwan UniversitySeoul 06351South Korea Department of Internal Medicine Seoul National University HospitalCancer Research InstituteCollege of MedicineSeoul National UniversitySeoul 03080South Korea Department of Oncology Asan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea Division of Medical Oncology Department of Internal MedicineYonsei University College of MedicineSeoul 03722South Korea Center for Breast Cancer National Cancer CenterGoyang 10408South Korea Department of Internal Medicine Kyungpook National University HospitalDaegu 41944South Korea Deparment of Internal Medicine Chungbuk National University HospitalCheongju 28644South Korea Department of Internal Medicine Seoul National University Bundang HospitalSeoul National University College of MedicineSeongnam 13620South Korea

Background: A phase II clinical trial of the comparison between eribulin plus gemcitabine (EG) and paclitaxel plus gemcitabine (PG) as first-line chemotherapy for patients with metastatic breast cancer (MBC) found that the EG regimen was less neurotoxic, but was similar in efficacy to the PG regimen. In the present study, we analyzed functional assessment of cancer therapy-taxane (FACT-Taxane) questionnaires from patients in this clinical trial to determine their quality of life (QoL). Methods: QoL was assessed using the Korean version of the FACT-Taxane questionnaires. After baseline assessment, QoL was assessed every 2 cycles for 12 cycles and every 3 cycles thereafter. The linear mixed model was used to evaluate the difference in QoL between the EG and PG arms. Results: Of the 118 enrolled patients, 117 responded to the FACT-Taxane questionnaires at baseline, 1 in the PG arm did not. Baseline QoL scores were not different between the EG and PG arms. During treatment, taxane subscale scores were significantly higher in the PG arm than in the EG arm after 2-13 cycles of chemotherapy (all P < 0.05), except for the 11th cycle. Neuropathy-specific analysis showed that patients in the PG arm had earlier and more severe neuropathic symptoms than those in the EG arm (P < 0.001). Conclusions: In our QoL analysis, the EG regimen delayed and decreased neuropathy as compared with the PG regimen. Therefore, eribulin would be a reasonable substitute for paclitaxel as first-line chemotherapy for MBC.

关键词： Metastatic breast cancer Eribulin Paclitaxel Neuropathy Quality of life Functional assessment of cancer therapy-taxane questionnaires

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