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Disseminated osteomyelitis after urinary tract infection in immunocompetent adult:A case report

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World Journal of Clinical Cases 2020年第16期8卷 3542-3547页

作者： young jun kim Jae Hoon Lee Department of Internal Medicine Institute of Wonkwang Medical ScienceWonkwang University College of MedicineIksan 54538South Korea

BACKGROUND Urinary tract infection(UTI)is one of the most common bacterial *** pyelonephritis or upper urinary tract infection is often accompanied by bacteremia;however,bacteremia resolves in most cases without ***,complications due to bacteremia *** of these is *** mainly affects the lumbar vertebral bodies,and rarely affects other *** SUMMARY An 80-year-old woman presented to the hospital with a two-month history of pain in both *** months ago,she was admitted to the hospital for fever,flank pain,and urinary frequency and was diagnosed with bacteremic *** hospitalization,she complained of pain in both legs;however,the pain resolved shortly after,and no abnormalities were observed on physical ***,she was placed on 2-wk antibiotic therapy for UTI without further evaluation for leg ***,pain recurred after discharge and persisted;therefore,an imaging test was *** scan and magnetic resonance imaging suggested osseous infection in both femurs,tibiae and *** treatment was performed,and tissue-and bone cultures revealed Escherichia coli,a previously observed pathogen,which demonstrated same antibiotic sensitivities,as noted in previous *** was diagnosed with disseminated osteomyelitis,as a complication of UTI,and was placed on an 8-wk antibiotic *** Indication for osteomyelitis should be high regardless of bone pain at sites other than lumbar spine after or during UTI.

关键词： Urinary tract infection Urosepsis Complication Disseminated Osteomyelitis Escherichia coli Case report

MXene-based hybrid materials for electrochemical and photoelectrochemical H_(2) generation

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Journal of Energy Chemistry 2024年第6期93卷 111-125,I0004页

作者： jun young kim Seung Hun Roh Chengkai Xia Uk Sim jung Kyu kim School of Material Science and Engineering North University of ChinaTaiyuan 030051China School of Chemical Engineering Sungkyunkwan University(SKKU)2066Seobu-roJangan-guSuwon 16419Republic of Korea Hydrogen Energy Technology Laboratory Korea Institute of Energy Technology(KENTECH)NajuJeollanamdo 58330Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University(SKKU)2066Seobu-roJangan-guSuwon 16419Republic of Korea

The conversion of solar energy to produce clean hydrogen fuel through water splitting is an emerging strategy for efficiently storing solar energy in the form of solar *** aligns with the increasing global demand for the development of an ideal energy alternative to fossil fuels that does not emit greenhouse ***(EC) and photoelectrochemical(PEC) water splitting technologies have garnered significant attention worldwide for advanced hydrogen solar fuel production in recent *** achieve sustainable green H_(2) production,it is essential to create efficient catalyst materials that are low-cost and can replace expensive noble metal-based *** characteristics make them an ideal catalyst material for the ***-dimensional MXenes with M_(n+1)X_(n) structure have been identified as a promising option for EC and PEC water splitting due to their superior hydrophilicity,metal-like conductivity,large surface area,and adjustable surface ***,we present a summary of recent advancements in the synthesis and performance enhancement methods for MXene hybrid materials in hydrogen production through EC and PEC water ***,we examine the challenges and insights associated with the rational design of MXene-based hybrid materials to facilitate efficient water splitting for sustainable solar fuel production.

关键词： MXene Hybrid materials EC PEC HER OER Water splitting

Obturator hernia-a rare etiology of lateral thigh pain:A case report

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World Journal of Clinical Cases 2021年第34期9卷 10728-10732页

作者： jun young kim Min Cheol Chang Department of Physical Medicine and Rehabilitation College of MedicineYeungnam UniversityTaegu 705-717South Korea

BACKGROUND Lateral thigh pain is a common complaint in patients visiting a pain ***,we describe the case of a patient with lateral thigh pain caused by an obturator *** SUMMARY An 83-year-old woman visited the emergency room with suddenly aggravated right lateral thigh *** resonance imaging of the thigh revealed no abnormal findings in the lateral thigh ***,an obturator hernia between the pectineus and obturator externus muscles was observed by *** computed tomography revealed a herniated small bowel with an incarceration point at the right obturator canal and a dilated loop of the small bowel *** of the right inguinal region revealed a distended bowel loop in the right pectineus *** Our report provides clinicians with information that an obturator hernia can cause lateral thigh pain.

关键词： Obturator hernia Pain Magnetic resonance image Computed tomography Ultrasonography Case report

Hybrid energy harvesting systems for self-powered sustainable water purification by harnessing ambient energy

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Frontiers of Environmental Science & Engineering 2023年第10期17卷 1-16页

作者： Zhengyang Huo young jun kim Yuying Chen Tianyang Song Yang Yang Qingbin Yuan Sang Woo kim School of Environment and Natural Resources Renmin University of ChinaBeijing 100872China School of Advanced Materials Science and Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Institute of Scientific and Technical Information of China Beijing 100038China

The development of self-powered water purification technologies for decentralized applications is crucial for ensuring the provision of drinking water in resource-limited regions. The elimination of the dependence on external energy inputs and the attainment of self-powered status significantly expands the applicability of the treatment system in real-world scenarios. Hybrid energy harvesters, which convert multiple ambient energies simultaneously, show the potential to drive self-powered water purification facilities under fluctuating actual conditions. Here, we propose recent advancements in hybrid energy systems that simultaneously harvest various ambient energies (e.g., photo irradiation, flow kinetic, thermal, and vibration) to drive water purification processes. The mechanisms of various energy harvesters and point-of-use water purification treatments are first outlined. Then we summarize the hybrid energy harvesters that can drive water purification treatment. These hybrid energy harvesters are based on the mechanisms of mechanical and photovoltaic, mechanical and thermal, and thermal and photovoltaic effects. This review provides a comprehensive understanding of the potential for advancing beyond the current state-of-the-art of hybrid energy harvester-driven water treatment processes. Future endeavors should focus on improving catalyst efficiency and developing sustainable hybrid energy harvesters to drive self-powered treatments under unstable conditions (e.g., fluctuating temperatures and humidity).

关键词： Piezocatalysis Solar energy Waste heat Decentralized water treatment Point-of-use Nanogenerator

Controlling a lithium surface with an alkyl halide nucleophile exchange

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Journal of Energy Chemistry 2021年第11期30卷 617-626,I0015页

作者： jung-Hun Lee Thuy Hoai Linh Vuong Soo Min Hwang Jae-Hun kim young-jun kim SKKU Advanced Institute of Nanotechnology(SAINT) Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Nano Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea School of Materials Science and Engineering Kookmin UniversitySeoul 02707Republic of Korea

Despite its high theoretical energy density, lithium metal faces huge challenges in its implementation as an anode for Li secondary batteries because of its uncontrollable dendritic growth and large volume change during plating/stripping processes. These geometric changes cause degradation in a cell’s cycle life and performance and can lead to short-circuits and explosions. Here, we report a new approach to producing a LiF-rich phase on the lithium anode surface by employing a “bi-phase” separator. We fabricated it by coating polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) onto a cellulose separator. The coverage of coating was adjusted by varying its concentration in the coating solution. The combination of cellulose and PVDF-HFP produced a LiF-rich solid-electrolyte interphase layer on the Li metal surface via an alkyl halide nucleophile exchange in contact with the bi-phase separator during plating. Symmetric cell tests show that the bi-phase separator extends the cycle life by more than 300 h, with overpotentials of less than 100 mV under plating/stripping at 2 mA cm^(−2) for a capacity of 2 mAh cm^(−2). The formation mechanism of the LiF-rich phase is suggested from spectroscopic analyses.

关键词： Li metal anode PVDF-HFP Cellulose LiF Phase inversion

Predictive factors for early clinical response in community-onset Escherichia coli urinary tract infection and effects of initial antibiotic treatment on early clinical response

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World Journal of Clinical Cases 2020年第19期8卷 4342-4348页

作者： young jun kim Jeong-Mi Lee Jae-Hoon Lee Department of Internal Medicine Wonkwang University College of MedicineIksan 54538South Korea Department of Public Health Wonkwang University College of MedicineIksan 54538South Korea Department of Internal Medicine and Institute of Wonkwang Medical Science Wonkwang University College of MedicineIksan 54538South Korea

BACKGROUND Urinary tract infection(UTI)is a common *** often requires hospitalization,and severe presentations,including sepsis and other complications,have a mortality rate of 6.7%-8.7%.AIM To evaluate the predictive factors for early clinical response and effects of initial antibiotic therapy on early clinical response in community-onset Escherichia coli(***)urinary tract infections(UTIs).METHODS This retrospective study was conducted at Wonkwang University Hospital in South Korea between January 2011 and December *** patients(aged>18 years)who were diagnosed with community-onset *** UTI were enrolled in this *** A total of 511 hospitalized patients were included.66.1%of the patients had an early clinical *** mean length of hospital stay in patients with an early clinical response were each 4.3 d shorter than in patients without an early clinical *** the multiple regression analysis,initial appropriate antibiotic therapy(OR=2.449,P=0.006),extended-spectrum(3-lactamase(ESBL)-producing ***(OR=2.112,P=0.044),improper use of broad-spectrum antimicrobials(OR=0.411,P=0.006),and a stay in a healthcare facility before admission(OR=0.562,P=0.033)were the factors associated with an early clinical *** broadspectrum antibiotic therapy was not associated with an early clinical *** ESBL producing ***,and the type of residence before hospital admission were the factors associated with an early clinical *** of initial antibiotic therapy was a predictive factor for an early clinical response,but broadspectrum of initial antibiotic therapy did not impact early clinical response.

关键词： Escherichia coli Urinary tract infections Adult Community acquired infections

Short-term interval combined chemoembolization and radiofrequency ablation for hepatocellular carcinoma

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World Journal of Gastroenterology 2014年第35期20卷 12588-12594页

作者： Won Hyeok Choe young jun kim Hee Sun Park Sang Woo Park Jeong Han kim So young Kwon Department of Internal Medicine Konkuk University School of Medicine Department of Radiology Konkuk University School of Medicine

AIM: To investigate hepatic function after combined transcatheter arterial chemoembolization (TACE) and radiofrequency ablation (RFA) with a short-term interval (0-2 d).

关键词： Child-Pugh score Liver cirrhosis Hepatocellular carcinoma Transcatheter arterial chemoembolization Radiofrequency ablation

Significant enhancement of photoresponsive characteristics and mobility of MoS2-based transistors through hybridization with perovskite CsPbBr3 quantum dots

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Nano Research 2019年第2期12卷 405-412页

作者： Taeho Noh Heung Seob Shin Changwon Seo jun young kim Jongwon Youn Jeongyong kim Kwang-Sup Lee Jinsoo Joo Department of Physics Korea University Seoul 02841 Republic of Korea Department of Advanced Materials and Chemical Engineering Hannatn University Daejeon 34430 Republic of Korea Department of Energy Science Sungkyunkwan University Suwon 16419 Republic of Korea

Inorganic perovskite CsPbBr3 quantum dots (QDs) are potential nanoscale photosensitizers;moreover,two-dimensional (2-D) molybdenum disulfide (MoS2) has been intensively studied for application in the active layers of optoelectronic *** this study,heterostructures of 2D-monolayered MoS2 with zero-dimensional functionalized CsPbBr3 QDs were prepared,and their nanoscale optical characteristics were *** effect of n-type doping on the MoS2 monolayer after hybridization with perovskite CsPbBr3 QDs was observed using laser confocal microscope photoluminescenca (PL) and Raman ***-effect transistors (FETs) using MoS2 and the MoS2-CsPbBr3 QDs hybrid were also fabricated,and their electrical and photoresponsive characteristics were investigated in terms of the charge transfer *** the MoS2-CsPbBr3 QDs-based FETs,the field effect mobility and photoresponsivity upon light irradiation were enhanced by ~ 4 times and a dramatic ~ 17 times,respectively,compared to the FET prepared without the parovskite QDs and without light *** is noteworthy that the photoresponsivity of the MoS-2-CsPbBr3 QDs-based FETs significantly increased with increasing light power,which is completely contrary to the behavior observed in previous studies of MoS2-based *** increased mobility and significant enhancement of the photoresponsivity can be attributed to the n-type doping effect and efficient energy transfer from CsPbBr3 QDs to *** results indicate that the optoelectronic characteristics of MoS2-based FETs can be significantly improved through hybridization with photosensitive parovskite CsPbBr3 QDs.

关键词： MoS2 perovskite quantum dot transistor photoresponsivity mobility charge transfer

Stable immobilization of lithium polysulfides using three-dimensional ordered mesoporous Mn_(2)O_(3) as the host material in lithium-sulfur batteries

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Carbon Energy 2024年第6期6卷 99-112页

作者： Sung Joon Park Yun Jeong Choi Hyun-seung kim Min Joo Hong Hongjun Chang Janghyuk Moon young-jun kim junyoung Mun Ki Jae kim Department of Energy Science Sungkyunkwan UniversitySuwonGyeonggi-doRepublic of Korea Department of Energy Engineering Konkuk UniversitySeoulRepublic of Korea Advanced Batteries Research Center Korea Electronic Technology InstituteSeongnamRepublic of Korea Department of Future Energy Engineering Sungkyunkwan UniversitySuwonRepublic of Korea Department of Energy Systems Engineering Chung-Ang UniversitySeoulRepublic of Korea SKKU Advanced Institute of Nanotechnology Sungkyunkwan UniversitySuwonGyeonggi-doRepublic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Korea School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySuwonRepublic of Korea

Lithium-sulfur batteries(LSBs)have drawn significant attention owing to their high theoretical discharge capacity and energy ***,the dissolution of long-chain polysulfides into the electrolyte during the charge and discharge process(“shuttle effect”)results in fast capacity fading and inferior electrochemical *** this study,Mn_(2)O_(3)with an ordered mesoporous structure(OM-Mn_(2)O_(3))was designed as a cathode host for LSBs via KIT-6 hard templating,to effectively inhibit the polysulfide shuttle ***-Mn_(2)O_(3)offers numerous pores to confine sulfur and tightly anchor the dissolved polysulfides through the combined effects of strong polar-polar interactions,polysulfides,and sulfur chain *** OM-Mn_(2)O_(3)/S composite electrode delivered a discharge capacity of 561 mAh g^(-1) after 250 cycles at 0.5 C owing to the excellent performance of OM-Mn_(2)O_(3).Furthermore,it retained a discharge capacity of 628mA h g^(-1) even at a rate of 2 C,which was significantly higher than that of a pristine sulfur electrode(206mA h g^(-1)).These findings provide a prospective strategy for designing cathode materials for high-performance LSBs.

关键词： host material lithium-sulfur battery ordered mesoporous structure shuttle effect transition-metal oxides