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Complete recovery of herpes zoster radiculopathy based on electrodiagnostic study:A case report

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World Journal of Clinical Cases 2021年第17期9卷 4303-4309页

作者： hyeon Seong Kim Ji Won Jung You jin Jung Young Suck Ro Si-Bog park Kyu Hoon Lee Department of Rehabilitation Medicine Hanyang University HospitalSeoul 04763South Korea Department of Dermatology Hanyang University HospitalSeoul 04763South Korea

BACKGROUND Herpes zoster is a painful infectious disease caused by the varicella zoster *** zoster radiculopathy,which is a type of segmental zoster paresis,can complicate the disease and cause motor *** complication should be considered when a patient with a rash complains of acute-onset motor weakness,and the diagnosis can be verified via electrodiagnostic *** SUMMARY A 64-year-old female with a history of asthma presented to the emergency department with stabbing pain,an itching sensation,and a rash on the right anterior shoulder that had begun 5 d *** examination revealed multiple erythematous grouped vesicles in the right C4-5 and T1 dermatome *** herpes zoster was suspected,the patient immediately received intravenous *** the third hospital day,she complained of motor weakness in the right upper *** resonance imaging of the cervical spine revealed mild intervertebral disc herniation at C4-C5 without evidence of nerve root *** the 12th hospital day,electrodiagnostic study revealed right cervical radiculopathy,mainly in the C5/6 *** months later,monoparesis resolved,and follow-up electrodiagnostic study was *** This case emphasizes that clinicians should consider the possibility of postherpetic paresis,such as herpes zoster radiculopathy,and that electrodiagnostic study is useful for diagnosis and follow-up.

关键词： Herpes zoster Radiculopathy Electrodiagnosis Varicella zoster virus Monoparesis Case report

UV-assisted flash light welding process to fabricate silver nanowire/graphene on a PET substrate for transparent electrodes

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Nano Research 2018年第4期11卷 2190-2203页

作者： Wan-Ho Chung Sung-hyeon park Sung-Jun Joo Hak-Sung Kim Department of Mechanical Engineering Hanyang University 17 Haendang-Dong Seongdong-Gu Seoul 133-791 Republic of Korea Institute of Nano Science and Technology Hanyang University Seou1133-791 Republic of Korea

Graphene oxide and silver nanowires were bar coated onto polyethylene terephthalate （PET） substrates and then welded using an ultraviolet （UV）-assisted flash light irradiation process to achieve both high electrical conductivity and low haze. The irradiation process connected adjacent silver nanowires by welding, while simultaneously reducing the graphene oxide to graphene. This process was performed using a custom W-assisted flash light welding system at room temperature under ambient conditions and was extremely rapid, with processing time of several milliseconds. The effects of varying the weight fractions of the silver nanowires and graphene oxide and of varying the W-assisted flash light welding conditions （light energy and pulse duration） were investigated. The surface morphologies of the welded silver nanowire/graphene films were analyzed using scanning electron microscopy. Optical characterizations, including transmittance and haze measurements, were also conducted using a spectrophotometer. To test their resistance to oxidation, the welded silver nanowire/graphene films were subjected to high temperature in a furnace （100 ℃）, and their sheet resistances were measured every hour. The flash light welding process was found to yield silver nanowire/graphene films with high oxidation resistance, high conductivity （14.35 Ω·sq-1）, high transmittance （93.46%）, and low haze （0.9%）. This material showed uniform temperature distribution when applied as a resistive heating film.

关键词： silver nanowires graphene oxide transparent electrode flash light welding printed electronics

Reduced interface energy loss in non-fullerene organic solar cells using room temperature-synthesized SnO2 quantum dots

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Journal of Materials Science & Technology 2020年第17期52卷 12-19页

作者： In Su jin Minwoo park Jae Woong Jung Department of Advanced Materials Engineering for Information&Electronics Kyung Hee University1732 Deogyeong-daeroGiheung-guYongin-siGyeonggi-do 446-701Republic of Korea Department of Chemical and Biological Engineering Sookmyung Women's UniversitySeoul 04310Republic of Korea

We herein report the room temperature synthesis of colloidal SnO2 quantum dots and their application in non-fullerene organic solar cells as an excellent electron transport *** thiourea-assisted hydrolysis at room temperature affords the nanocrystalline SnO2 quantum dots with a diameter of 3-4 *** utilization of the SnO2 quantum dots as an electron transporting layer effectively reduces the interfacial trap density and charge recombination in the solar cell devices,leading to not only the reduced energy loss but also excellent photocurrent *** optimized organic solar cells employing SnO2 quantum dots with polyethylenimine ethoxylated achieves power conversion efficiencies up to 12.023%with a VOC,a JSC,and a FF of 0.89 V,18.89 mA cm^–2,and *** work suggest that the SnO2 quantum dot is a promising electron transporting material to construct efficient organic solar cells for practical *** work also demonstrates the key strategy for thiourea-assisted hydrolysis to synthesize fine and nanocrystalline SnO2 quantum dots.

关键词： Energy loss Organic solar cells Interface SnO2 Quantum dots

Lamellar sulfonated acid polymer-initiated in situ construction of robust LiF-rich SEI enabling superior charge transport for ultrastable and fast charging silicon anodes

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Journal of Energy Chemistry 2024年第11期98卷 134-143页

作者： Jungsoo park Song Kyu Kang Junhyuk Ji Hwichan Ahn Gwan hyeon park Minho Kim Won Bae Kim Graduate Institute of Ferrous&Eco Materials Technology(GIFT) Pohang University of Science and Technology(POSTECH)77 Cheongam-roNam-guPohang-siGyeongsangbuk-do 37673Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)77 Cheongam-RoNam-guPohang-siGyeongsangbuk-do 37673Republic of Korea

The extreme volume expansion of the silicon(Si) anodes during repeated cycles seriously induces undesirable interfacial side reactions,forming an unstable solid electrolyte interphase(SEI) that degrades the electrode integrity and cycle stability in lithium-ion batteries,limiting their practical *** considerable efforts to stabilize the SEI through surface modification,challenges persist in the development of high-performance Si anodes that effectively regulate intrinsic SEI properties and simultaneously facilitate electron/ion ***,a highly conductive and organic electrolyte-compatible lamellar p-toluenesulfonic acid-doped polyaniline(pTAP) layer is proposed for constructing a robust artificial SEI on Si nanoparticles to achieve fast charging,lo ng-term cycle lifespan and high areal *** spatially uniform pTAP layer,formed through a facile direct-encapsulation approach assisted by enriched hydrogen bonding,contributes to the effective formation of in situ SEI with an even distribution of the LiF-rich phase in its interlamination ***,the integrated artificial SEI facilitates isotropic ion/electron transport,increased robustness,and effectively dissipates stress from volume ***,a notably high rate performance of 570 mA h g^(-1),even at a substantially high current density of 10 A g^(-1),is achieved with excellent cyclic stability by showing a superior capacity over 1430 mA h g^(-1) at 1 A g^(-1) after 250 cycles and a high areal capacity of ca.2 mA h cm^(-2) at 0.5 C in a full cell *** study demonstrates that the rational design of conductive polymers with SEI modulation for surface protection has great potential for use in high-energy-density Si anodes.

关键词： Lithium-ion battery Silicon anode Conductive polymers Solid electrolyte interphase

Family history influences the early onset of hepatocellular carcinoma

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World Journal of Gastroenterology 2012年第21期18卷 2661-2667页

作者： Chung-Hwa park Seung-Hee Jeong hyeon-Woo Yim jin Dong Kim Si Hyun Bae Jong Young Choi Seung Kew Yoon Department of Internal Medicine The Catholic University of KoreaSeoul 137-701 South Korea Department of Preventive Medicine College of Medicine The Catholic University of KoreaSeoul 137-701 South Korea Clinical Research Coordinating Center of Catholic Medical Center The Catholic University of KoreaSeoul 137-701 South Korea

AIM: To evaluate the relationship between a positive family history of primary liver cancer and hepatocellular carcinoma (HCC) development in Korean HCC patients. METHODS: We studied a total of 2242 patients diagnosed with HCC between January 1990 and July 2008, whose family history of primary liver cancer was clearly described in the medical *** family history of HCC and 2077 (92.6%) did not. The male to female ratio was 3.6:1, and the major causes of HCC were chronic hepatitis B virus (HBV) infection in 75.1%, chronic hepatitis C virus infection in 13.2% and alcohol in 3.1%. The median ages at diag- nosis in the positiveand negative-history groups were 52 years (range: 29-79 years) and 57 years (range: 18-89 years), respectively (P < 0.0001). Furthermore, among 1713 HCC patients with HBV infection, the number of patients under 45 years of age out of 136 patients with positive family history was 26 (19.1%), whereas those out of 1577 patients with negative family history was 197 (12.5%), suggesting that a positive family history may be associated with earlier development of HCC in the Korean population (P = 0.0028). CONCLUSION: More intensive surveillance maybe recommended to those with a positive family history of HCC for earlier diagnosis and proper management especially when HBV infection is present.

关键词： Liver cancer Hepatocellular carcinoma Family history Epidemiology

Three-dimensional endoanal ultrasonographic assessment of an anal fistula with and without H_2O_2 enhancement

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World Journal of Gastroenterology 2009年第38期15卷 4810-4815页

作者： Yung Kim Young jin park Department of Surgery Dongguk University Ilsan HospitalDongguk University School of Medicine

AIM： To evaluate the effectiveness of three-dimensional endoanal ultrasound （3D-EAUS） in the assessment of anal fistulae with and without H202 enhancement. METHODS： Sixty-one patients （37 males, aged 17-74 years） with anal fistulae, which were not simple low types, were evaluated by physical examination and 3D-EAUS with and without enhancement. Fistula classification was determined with each modality and compared to operative findings as the reference standard. RESULTS： The accuracy of 3D-EAUS was significantly higher than that of physical examination in detecting the primary tract （84.4% vs 68.7%, P = 0.037） and secondary extension （81.8% vs 62.1%, P = 0.01） and localizing the internal opening （84.2% vs 59.7%, P = 0.004）. A contrast study with H202 detected several more fistula components including two primary suprasphincteric fistula tracks and one supralevator secondary extension, which were not detected on non-contrast study. However, there was no significant difference in accuracy between 3D-EAUS and H202- enhanced 3D-EAUS with respect to classification of the primary tract （84.4% vs 89.1%, P = 0.435） or secondary extension （81.8% vs 86.4%, P = 0.435） or localization of the internal opening （84.2% vs 89.5%, P = 0.406）. CONCLUSION： 3D-EAUS was highly reliable in the diagnosis of an anal fistula. H2O2 enhancement was helpful at times and selective use in difficult cases may be economical and reliable.

关键词： Anal fistula Endoanal ultrasound H2O2enhancement

Supercooling phenomena in protein based food matrix composed of various fat,salt,and water contents

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Food Bioscience 2023年第1期51卷 447-454页

作者： Dong hyeon park Eun Jeong Kim Mi-Jung Choi Department of Food Science and Biotechnology of Animal Resources Konkuk UniversitySeoul05029Republic of Korea Refrigerator Research of Engineering Division Home Appliance and Air Solution CompanyLG ElectronicsChangwon51533Republic of Korea

Supercooling is recognized as a novel preservation method because it maintains the freshness of food without tissue damage caused by ice *** is a complicated matrix composed of several components with varying freezing points depending on the food *** this study,effects of food compositions on stability of supercooling preservation were investigated using a model food to define the interaction between supercooling maintenance and the factor of food ***,chicken meat(leg and wing)was used to confirm food freshness during extended *** higher the fat and salt content of the model food,better was the maintenance of the supercooled state;however,higher the moisture content,worse was the maintenance of supercooled *** presence of the fat layer affected the supercooling maintenance *** experiments with real food,the chicken leg and wing samples were 80%and 90%supercooled,*** samples conserved at superooling presented significantly lower drip loss,total volatile basic nitrogen,and total aerobic count than those of the *** addition,water holding capacity of supercooled samples were not significant differences compared to frozen samples.

关键词： Food composition Supercooling Freshness Chicken meats

EFFECT OF FABRICATION ON HIGH CYCLE FATIGUE PROPERTIES OF COPPER THIN FILMS

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Acta Mechanica Solida Sinica 2008年第4期21卷 318-326页

作者： Jun-Hyub park Joong-Hyok An Yun-Jae Kim hyeon-Chang Choi Department of Mechatronics Engineering College of EngineeringTongmyong University535Yongdang-DongNam-GuBusan608-711Korea Department of Mechanical Engineering College of EngineeringKorea UniversityAnam-dong Seongbuk-GuSeoul136-701Korea

The influence of fabrication on the tensile and fatigue behavior of copper films manufactured by 3 kinds of fabrication methods was investigated. The tensile and high cycle fatigue tests were performed using the test machine developed by authors. Young＇s moduli （72, 71 and 69 GPa, respectively） are lower than the literature values （108-145 GPa）, while the yield strengths were as high as 358, 350 and 346 MPa, respectively and the ultimate strengths as 462, 456 and 446 MPa, respectively. There is not much difference in the tensile properties of the 3 kinds of films. There is little difference in the fatigue properties of the 3 kinds of films but one of them has shorter fatigue life than others in high cycle region and longer fatigue life than others in low cycle region.

关键词： mechanical properties thin film copper high cycle fatigue test

Fake News Detection on Social Media: A Temporal-Based Approach

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Computers, Materials & Continua 2021年第12期69卷 3563-3579页

作者： Yonghun Jang Chang-hyeon park Dong-Gun Lee Yeong-Seok Seo Department of Computer Engineering Yeungnam UniversityGyeongsan38541Korea

Following the development of communication techniques and smart devices,the era of Artificial Intelligence(AI)and big data has *** increased connectivity,referred to as hyper-connectivity,has led to the development of smart *** in these smart cities can access numerous online contents and are always *** developments,however,also lead to a lack of standardization and consistency in the propagation of information throughout communities due to the consumption of information through social media *** cannot often be verified,which can confuse the *** increasing influence of social media has thus led to the emergence and increasing prevalence of fake *** this study,we propose a methodology to classify and identify fake news emanating from social *** collected content from Twitter to detect fake news and statistically verified that the temporal propagation pattern of quote retweets is effective for the classification of fake *** verify this,we trained the temporal propagation pattern to a two-phases deep learning model based on convolutional neural networks and long short-term *** fake news classifier demonstrates the ability for its early ***,it was verified that the temporal propagation pattern was the most influential feature compared to other feature groups discussed in this paper.

关键词： Artificial intelligence deep learning fake news rumor smart city data analysis