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Clinical characteristics of asymptomatic Terson syndrome in the patients with aneurysmal subarachnoid hemorrhage

International Journal of Ophthalmology(English edition) 2020年第2期13卷 292-300页

作者： Hae min Kang Jin Mo Cho So Yeon Kim Jeong Hoon choi Department of Ophthalmology Catholic Kwandong UniversityInternational St.Mary’s HospitalIncheon 22711Republic of Korea Department of Neurosurgery Catholic Kwandong UniversityInternational St.Mary’s HospitalIncheon 22711Republic of Korea Department of Ophthalmology Choikang Eye ClinicSeoul 01110Republic of Korea

●AIM:To investigate clinical characteristics of asymptomatic Terson syndrome and its clinical impact in patients with aneurysmal subarachnoid hemorrhage(SAH).●METHODS:This retrospective,interventional study included 31 patients with aneurysmal SAH,and the medical records were *** addition to baseline characteristics of the study population such as age,sex,and underlying medical history,multi-modal imaging analysis,including fluorescein angiography(FA),spectral domain optical coherence tomography(SD-OCT),were also *** Coma Scale(GCS),Hunt-Hess(HH)grade,and Fisher scale at the time of admission,and functional outcome by using modified Rankin Scale(mRS)at 6 mo were compared.●RESULTS:Of the 31 patients,10 patients(32.3%)were diagnosed with Terson *** the patients with Terson syndrome did not report visual symptoms at the time of ophthalmologic *** showed microvascular changes of retinal capillaries and varying degrees of disc ***-OCT allowed intuitive anatomical localization of multi-layered retinal hemorrhages and assessment of ellipsoid zone *** patients with Terson syndrome showed significantly worse GCS(P=0.047)and HH grade(P=0.025)than those without,except Ficher scale(P=0.385).There was no significant difference in the mRS(P=0.250)at 6 *** baseline factors,the HH grade was the only significant factor associated with Terson syndrome(B=1.079,P=0.016).●CONCLUSION:In our study,32.3%of the patients have Terson syndrome without visual *** baseline HH grade is significantly correlated with Terson syndrome,and there is no significant difference in the functional outcome between the patients with and without Terson *** syndrome may develop without any visual symptoms as shown in our study,and ophthalmologic screening may be recommended to prevent further visual deterioration especially in the patients with poor HH grade at the time of aneurysmal SAH.

关键词： cerebral aneurysm subarachnoid hemorrhage Terson syndrome

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Facile synthesis of fully ordered L10-FePt nanoparticles with controlled Pt-shell thicknesses for electrocatalysis

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Nano Research 2017年第8期10卷 2866-2880页

作者： Yonghoon Hong Hee Jin Kim Daehee Yang Gaehang Lee Ki min Nam Myung-Hwa Jung Young-min Kim Sang-II choi Won Seok Seo Department of Chemistry Sogang University Seou104107 Republic of Korea Department of Chemistry and Green-Nano Materials Research Center Kyungpook National University Daegu 41566 Repubfic of Korea Korea Basic Science Institute and University of Science and Technology Daejeon 34133 Republic of Korea Department of Chemistry Mokpo National University Jeonnam 58554 Republic of Korea Department of Physics Sogang University Seoul 04107 Republic of Korea Center for Integrated Nanostructure Physics Institute for Basic Science (IBS) Suwon 16419 Repubfic of Korea Department of Energy Science Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea

We report a simple one-step approach for the synthesis of -4 nm uniform and fully L10-ordered face-centered tetragonal （fct） FePt nanoparticles （NPs） embedded in -60 nm MCM-41 （fct-FePt NPs@MCM-41）. We controlled the Pt-shell thickness of the fct-FePt NPs by treating the fct-FePt NPs@MCM-41 with acetic acid （HOAc） or hydrochloric acid （HC1） under sonicafion, thereby etching the surface Fe atoms of the NPs. The fct-FePt NPs deposited onto the carbon support （fct-FePt NP/C） were prepared by mixing the fct-FePt NPs@MCM-41 with carbon and subsequently removing the MCM-41 using NaOH. We also developed a facile method to synthesize acid-treated fct-FePt NP/C by using a HF solution for simultaneous surface-Fe etching and MCM-41 removal. We studied the effects of both surface-Fe etching and Pt-shell thickness on the electrocatalytic properties of fct-FePt NPs for the methanol oxidation reaction （MOR）. Compared with the non-treated fct-FePt NP/C catalyst, the HOAc-treated and HCl-treated catalysts exhibit up to 34% larger electrochemically active surface areas （ECASAs）; in addition, the HCl-treated fct-FePt NP （with -1.0 nm Pt shell）/C catalyst exhibits the highest specific activity. The HF-treated fct-FePt NP/C exhibits an ECASA almost 2 times larger than those of the other acid-treated fct-FePt NP/C catalysts and shows the highest mass activity （1,435 mA·mgPt^-1, 2.3 times higher than that of the commercial Pt/C catalyst） and stability among the catalysts tested. Our findings demonstrate that the surface-Fe etching for the generation of the Pt shell on fct-FePt NPs and the Pt-shell thickness can be factors for optimizing the electrocatalysis of the MOR.

关键词： FePt face centered tetragonal bimetallic methanol oxidation reaction electrocatalysts

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Large retroperitoneal atypical spindle cell lipomatous tumor,an extremely rare neoplasm:A case report

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World Journal of Clinical Cases 2022年第8期10卷 2584-2590页

作者： Jung-min Bae Chang-Yeon Jung Woo-Sung Yun Joon Hyuk choi Department of Surgery Yeungnam University College of MedicineDaegu 42415South Korea Kyungpook National University School of Medicine Jung-guDaegu 41944Korea Department of Pathology Yeungnam University College of Medicine Nam-guDaegu 42415Korea

BACKGROUND Atypical spindle cell lipomatous tumor(ASLT)is a rare soft tissue neoplasm with a low potential for *** frequently occurs in the limb and limb ***,large retroperitoneal ASLTs are extremely *** was no concrete case report of retroperitoneal *** SUMMARY An 18-year-old woman presented with abdominal pain and a palpable *** computed tomography revealed a large fatty mass that was approximately 30 cm in size and filled the entire abdominal *** excision was *** tumor did not invade the adjacent *** pelvic cavity was then too narrow to dissect *** mass was successfully excised without tumor rupture or adjacent organ ***,the neoplasm was a well-differentiated adipocytic *** staining showed that the spindle cells were positive for CD34 and desmin,in addition to multifocal positivity for S100 *** histological features were consistent with an *** patient’s postoperative course was *** the 12-mo followup,no evidence of recurrence or metastasis was *** To the best of our knowledge,our study is the first concrete report of a large retroperitoneal ASLT in the English *** the large retroperitoneal ASLT located in the pelvic cavity,which made it too narrow and tight to dissect,complete excision is difficult but very important because of recurrence *** large retroperitoneal ASLTs are considered extremely rare,their detection is important for accurate evaluation and *** to their significant rarity,retrospective multicenter case studies are required to determine the clinicopathologic characteristics.

关键词： Neoplasms Retroperitoneal space Spindle cell Case report

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Effect of incision types for Artisan phakic intraocular lens implantation on ocular higher order aberrations

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International Journal of Ophthalmology(English edition) 2016年第12期9卷 1785-1789页

作者： Young min Park Bong Joon choi Jong Soo Lee Department of Ophthalmology Gyeongsang National University School of Medicine Gyeongsang National University Changwon Hospital 11 Samjeongja-ro Seongsan-gu Changwon-si Gyeongsangnam-do 51472 Korea Lee Eye Clinic Pusan 47524 Korea Department of Ophthalmology School of Medicine Pusan National University and Medical Research Institute Pusan National University Hospital Pusan 602-739 Korea

AIM： To evaluate the effect of incision types for Artisan phakic intraocular lens （PIOL） implantation on ocular higher-order aberrations （HOAs）.METHODS： A retrospective review was conducted of the patients who had undergone Artisan PIOL implantation for the correction of myopia and followed up for at least 6mo. Patients are classified into 2 groups considering the incision type： cornea group with patients undergone clear corneal incision; sclera group with patients undergone sclera tunnel incision. All patients with postoperative astigmatism of under 1 diopter （D） were included to minimize the effect of residual astigmatism on postoperative HOAs. Visual acuity, special equivalents, astigmatism, predictability （±1 D from target refraction）, HOAs （coma, trefoil, spherical aberration）, and corneal endothelial counts were analyzed preoperatively and 6mo ***： At the postoperative 6mo, all patients of both groups achieved uncorrected visual acuity of 16/20 or better, and significantly decreased the spherical equivalents compared with preoperative values. The predictability of refractive correction was 96% in the former, and 94% in the latter. Unlike the sclera group, preoperative astigmatism decreased significantly in cornea group at postoperative 6mo. The HOAs increased significantly at postoperative 6mo compared to the preoperative values in both groups, and the root mean square （RMS） total and trefoil wavefront aberration of cornea group were significantly higher than those of sclera ***： Although corneal incision significantly reduces preexisting astigmatism, the postoperative 6mo of total RMS and trefoil aberration change may deteriorate the visual quality after Artisan PIOL implantation.

关键词： Artisan astigmatism higher-order aberrations incision phakic intraocular lens

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Changes on optical coherence tomography angiography and fluorescein angiography in eyes with neovascular age-related macular degeneration

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International Journal of Ophthalmology(English edition) 2022年第11期15卷 1837-1844页

作者： So min Ahn Mihyun choi Cheolmin Yun Seong-Woo Kim Jaeryung Oh Department of Ophthalmology Korea University College of MedicineSeoul 02841Republic of Korea

AIM:lo evaluate the changes on optical coherence tomography angiography(OCTA) and fluorescein angiography(FA) and their correlation in neovascular agerelated macular degeneration(nAMD) before and after intravitreal aflibercept injections(IAIs).METHODS:In 43 treatment-na?ve patients with nAMD,choroidal neovascularization(CNV) in OCTA were morphologically and quantitatively analyzed before and after IAIs to determine whether they are correlated with leakage on FA or *** combining CNV in OCTA and leakage in FA,lesions were characterized as three types:L+C+(with both CNV and leakage),L-C+(with CNV but without leakage),or L+C-lesion(with leakage outside CNV).RESULTS:Before IAI,while 27 eyes had L+C+lesion only,16 eyes had both L+C+and L-C+lesions *** capillaries and anastomosis in CNV were more developed in L+C+lesion,at 86.0% and58.1%,respectively,relative to 9.3% and 9.3% in L-C+lesions(P<0.001).After IAIs in 33 eyes,tiny capillaries and anastomosis were decreased in the lesions with cessation of leakage on FA(P<0.001 and P=0.001,respectively).In quantitative analysis,neovascularization length and numbers of junctions and endpoints were also significantly ***:Leakage on FA is associated with CNV morphology in OCTA and remained so after ***,by carefully assessing the morphological and quantitative changes of CNV in OCTA before and after treatment,activity of nAMD is expected even though CNV on OCTA is not completely matched with fluorescein leakage.

关键词： choroidal neovascularization fluorescein angiography leakage neovascular age-related macular degeneration optical coherence tomography angiography

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Transcatheter embolization for hemorrhage from aberrant testicular artery after partial nephrectomy:A case report

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World Journal of Clinical Cases 2023年第32期11卷 7852-7857页

作者： Juyoun Youm min-Jeong choi Bong Man Kim Yumi Seo Department of Radiology Dankook University HospitalCheonan 31116South Korea Department of Urology Dankook University HospitalCheonan 31116South Korea

BACKGROUND Arterial bleeding typically involves the renal artery following partial nephrectomy;in this study,we present a case of bleeding originating from the testicular artery that has not been reported in previous *** SUMMARY A 52-year-old man suffered hemorrhage from a perinephric branch of the aberrant left testicular artery after an open nephron-sparing surgery for renal cell *** signs of bleeding were manifested by the patient,such as fresh blood drainage from the catheter,decreased hemoglobin levels,and significant vital sign *** computed tomography did not show evidence of active bleeding,transcatheter angiography was conducted to identify the bleeding *** spot images confirmed bleeding derived from a perinephric branch of the testicular artery originating from the segmental artery of the left renal *** n-butyl-2-cyanoacrylate,successful transcatheter arterial embolization of the affected branch was *** after the embolization procedure,the bleeding ceased,and the patient experienced complete recovery devoid of *** In patients with postoperative arterial hemorrhage after partial nephrectomy,the testicular artery can be a rare but notable source of *** bleeding site localization via angiographic evaluation,followed by transcatheter arterial embolization,can be instrumental for safe,prompt,and effective hemostasis.

关键词： Partial nephrectomy Hemorrhage Testicular artery Angiography Embolization Case report

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Inverse correlation between gastroesophageal reflux disease and atrophic gastritis assessed by endoscopy and serology

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World Journal of Gastroenterology 2022年第8期28卷 853-867页

作者： Yoo min Han Su Jin Chung Seokha Yoo Jong In Yang Ji min choi Jooyoung Lee Joo Sung Kim Department of Internal Medicine and Healthcare Research Institute Seoul National University Hospital Healthcare System Gangnam CenterSeoul 06236South Korea Department of Anesthesiology and Pain Medicine Seoul National University College of MedicineSeoul 03080South Korea Department of Internal Medicine and Liver Research Institute Seoul National University College of MedicineSeoul 03080South Korea

BACKGROUND Helicobacter pylori(***)infection is known to prevent the occurrence of gastroesophageal reflux disease(GERD)by inducing gastric mucosal ***,little is known about the relationship between atrophic gastritis(AG)and *** To confirm the inverse correlation between AG and the occurrence and severity of *** Individuals receiving health checkups who underwent upper gastrointestinal endoscopy at Seoul National University Healthcare System Gangnam Center were *** grade of reflux esophagitis was evaluated according to the Los Angeles *** AG(EAG)was categorized into six *** AG(SAG)was defined as pepsinogen I≤70 ng/m L and pepsinogen I/II ratio≤*** association between the extent of EAG and SAG and the occurrence and severity of GERD was evaluated using multivariate logistic regression *** In total,4684 individuals with GERD were compared with 21901 healthy *** multivariate logistic regression analysis,advanced age,male sex,body mass index>23 kg/m2,presence of metabolic syndrome,current smoking,and alcohol consumption were associated with an increased risk of *** for *** immunoglobulin G antibodies was associated with a decreased risk of *** was an inverse correlation between the extent of EAG and occurrence of GERD:Odds ratio(OR),1.01[95%confidence interval(CI):0.90-1.14]in C1,0.87(0.78-0.97)in C2,0.71(0.62-0.80)in C3,0.52(0.44-0.61)in O1,0.37(0.29-0.48)in O2,and 0.28(0.18-0.43)in ***,the extent of EAG showed an inverse correlation with the severity of *** presence of SAG was correlated with a reduced risk of GERD(OR=0.49,95%CI:0.28-0.87,P=0.014).CONCLUSION The extent of EAG and SAG exhibited strong inverse relationships with the occurrence and severity of *** followed by *** infection may be independently protect against GERD.

关键词： Gastroesophageal reflux disease Reflux esophagitis Helicobacter pylori Atrophic gastritis Pepsinogen

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Sustainable Furfural Biomass Feedstocks Electrooxidation toward Value-Added Furoic Acid with Energy-Saving H_(2) Fuel Production Using Pt-Decorated Co_(3)O_(4) Nanospheres

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Energy & Environmental Materials 2024年第2期7卷 350-358页

作者： Talshyn Begildayeνa Jayaraman Theerthagiri Seung Jun Lee Ahreum min Gyeong-Ah Kim Siνakumar Manickam Myong Yong choi Department of Chemistry(BK21 FOUR) Core-Facility Center for Photochemistry&NanomaterialsResearch Institute of Natural SciencesGyeongsang National UniversityJinju 52828South Korea Petroleum and Chemical Engineering Faculty of EngineeringUniversiti Teknologi BruneiJalan Tungku Link GadongBandar Seri Begawan BE1410Brunei Darussalam

Here,furfural oxidation was performed to replace the kinetically sluggish O_(2)evolution reaction(OER).Pt-Co_(3)O_(4)nanospheres were developed via pulsed laser ablation in liquid(PLAL)in a single step for the paired electrocatalysis of an H_(2)evolution reaction(HER)and furfural oxidation reaction(FOR).The FOR afforded a high furfural conversion(44.2%)with a major product of 2-furoic acid after a 2-h electrolysis at 1.55 V versus reversible hydrogen electrode in a 1.0-M KOH/50-mM furfural *** Pt-Co_(3)O_(4)electrode exhibited a small overpotential of 290 mV at 10 mA cm^(-2).As an anode and cathode in an electrolyzer system,the Pt-Co_(3)O_(4)electrocatalyst required only a small applied cell voltage of~1.83 V to deliver 10 mA cm^(-2),compared with that of the pure water electrolyzer(OER||HER,~1.99 V).This study simultaneously realized the integrated production of energy-saving H_(2)fuel at the cathode and 2-furoic acid at the anode.

关键词： biomass conversion electrochemical furfural oxidation overall water splitting Pt-Co_(3)O_(4)electrocatalyst pulsed laser ablation in liquid

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Fabrication of two-layer flexible copper clad laminate by electroless-Cu plating on surface modified polyimide

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中国有色金属学会会刊：英文版 2009年第4期19卷 970-974页

作者： Soo-min HWANG Jun-Hyung LIM Chang-min LEE Eui-Cheol PARK Jun-Hyuk choi Jinho JOO Hoo-Jeong LEE Seung-Boo JUNG School of Advanced Materials Science and Engineering Sungkyunkwan University

A flexible copper clad laminate(FCCL) was fabricated using electroless-and electro-Cu plating processes and the effects of pre-treatment time on the adhesion strength of the FCCL were evaluated based on interfacial *** neutralization and catalyst time were varied in the range of 0-20 min and 0.1-10 min,respectively,and the interfacial condition of the FCCL was characterized by atomic force microscopy(AFM) and X-ray photoelectron spectroscopy(XPS).It is observed that the peel strength increases significantly as the neutralization and catalyst time *** strength as high as 7.2-7.3 N/cm is obtained as the neutralization and catalyst time increase up to 20 min and 10 min,respectively,which is comparable to the strength achieved by the conventional laminating and sputtering *** improvements are probably due to an increase in the surface roughness of polyimide(PI),the activated surface condition,and the adsorption of palladium ions/atoms(Pd) on the PI surface which act as nucleation sites for Cu.

关键词：聚酰亚胺表面改性化学制备层压板铜电镀铜箔软性 X射线光电子能谱

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A flexible electromagnetic interference shielding film coated with a hybrid solder-magnetic powder mixture on a PET substrate

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Journal of Materiomics 2018年第4期4卷 390-401页

作者： Jae Hyang Lee Dong Seok Kang Sang Hoon Kim min-Jung Son Jae Won choi Dae Keun choi Joon-Phil choi Clodualdo Aranas Jr Metal 3D Printing Convergence Research Team Korea Institute of Machinery and Materials156 Gajeongbuk-roYuseong-guDaejeon34103Republic of Korea Metal Powder Department Korea Institute of Materials Science797 Changwon-daeroSeongsan-guChangwon-siGyeongsangnam-do51508Republic of Korea Digital Manufacturing Process Group Korea Institute of Industrial Technology113e58 Seohaean-roSiheung-siGyeonggi-do15014Republic of Korea Department of Printed Electronics Korea Institute of Machinery and Materials156 Gajeongbuk-roYuseong-guDaejeon34103Republic of Korea Department of mining and Materials Engineering McGill University3610 University StreetMontrealQuebecH3A 0C5Canada Mechanical Engineering University of New Brunswick15 Dineen DriveFrederictonNew BrunswickE3B 5A3Canada

A flexible electromagnetic interference(EMI)shielding film was innovatively fabricated using both low melting temperature solder arrays and amorphous soft magnet particulates consolidated on a polyethylene terephthalate(PET)***,the IneSneBi solder arrays presented a low melting point of 99.4C,which enabled attachment to the heat-sensitive plastic substrate without any thermal damage,and a low electrical resistivity of 14.1 mU cm,making them very effective at interrupting EM ***,the solder arrays with a high thermal conductivity of 61.2 W/(m$K)at 298.15 K were also useful as a thermal conductor for a heat ***,the solder arrays provide efficient electrical and thermal channels for electron transport induced by abruptly or consistently created EM waves due to suddenly turning on and the long term operation of electronics,***,the Fe-based magnetic particulates were added and resulted in effective saturation magnetization of 161.1 emu/g,remanence of 2.9 emu/g,and coercivity of 12.5 G,thus were able to disturb the EM pathway because of their soft magnetic ***,the hybrid EMI shielding film with exceptionally high electrical and thermal conductivity and superior soft magnetic properties provided remarkable shielding effectiveness of 102.5 dB at 10.2 GHz.

关键词： Flexible EMI shielding film PET substrate Solder arrays Magnetic particulates

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