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Clinical features of strabismus and nystagmus in bilateral congenital cataracts

International Journal of Ophthalmology(English edition) 2018年第5期11卷 813-817页

作者： Sung Soo hwang Wan Soo kim Soo jung Lee Department of Ophthalmology Haeundae Paik Hospital Inje University College of Medicine Busan 48108 Korea kim Wan Soo Eye Clinic Busan 48266 Korea

AIM：To evaluate the prevalence,clinical features,and the factors affecting onset of strabismus and nystagmus in patients with bilateral congenital ***：This study evaluated 116 eyes of 58 patients who underwent lens removal for the treatment of bilateral congenital cataracts between January 1999 and January *** presence and type of strabismus and nystagmus were determined before and after *** of strabismus and final visual acuity were compared in patients with and without *** were divided into three groups（orthotropia/orthotropia,orthotropia/strabismus,and strabismus/strabismus） according to their preoperative and postoperative ocular *** at cataract surgery and associations of nystagmus and primary intraocular lens（IOL） implantation with strabismus were ***：Six patients（10.3%） had strabismus preoperatively and an additional 11（19.0%） developed postoperative *** was more common than esotropia both preoperatively and *** patients（31.0%） had postoperative nystagmus,with sensory nystagmus being the most common *** the 18 patients with nystagmus,10 had strabismus,with exotropia being more common than *** visual acuity was poor in patients with *** at cataract surgery and rate of primary IOL implantation were significantly lower,and postoperative nystagmus was more common,in the orthotropia/strabismus group than in the other two ***：Exotropia and sensory nystagmus are common in patients with bilateral congenital *** at cataract surgery and rate of IOL implantation are lowerand nystagmus more common in patients with postoperative onset of *** is associated with poor visual prognosis.

关键词： bilateral congenital cataracts strabismus nystagmus

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Atomic layer deposition of an Al_2O_3 dielectric on ultrathin graphite by using electron beam irradiation

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Journal of Semiconductors 2012年第9期33卷 34-37页

作者：蒋然孟令国张锡健 Hyung-Suk jung Cheol Seong hwang School of Physics Shandong UniversityJinan 250100China Department of Materials Science and Engineering Seoul National UniversitySeoul 151-747Korea

Atomic layer deposition ofan Al2O3 dielectric on ultrathin graphite is studied in order to investigate the integration of a high k dielectric with graphite-based substrates. Electron beam irradiation on the graphite surface is followed by a standard atomic layer deposition ofAl2O3. Improvement of the Al2O3 layer deposition morphology was observed when using this radiation exposure on graphite. This result may be attributed to the amorphous change of the graphite layers during electron beam irradiation.

关键词： Al2O3 high k atomic layer deposition graphene

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High-Throughput Pb Recycling for Perovskite Solar Cells Using Biomimetic Whitlockite

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Energy & Environmental Materials 2023年第3期6卷 170-176页

作者： jung Sug Hong Hee jung kim Chang Hwun Sohn Oh Yeong Gong Jin Hyuk Choi Kang Hee Cho Gill Sang Han ki Tae Nam Hyun Suk jung Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Korea School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySuwon 16419Korea

Pb contamination in aquatic environments causes severe pollution;therefore,harmless absorbents are *** this study,we report a novel synthesis of whitlockite(WH,Ca_(18)Mg_(2)(HPO_(4))_(2)(PO_(4))_(12)),which is the second most abundant biomineral in human bone,and its application as a high-performing Pb^(2+)***(HAP)and WH are prepared via a simple precipitation *** Pb2+absorption performance and mechanism of the synthesized biominerals are investigated in aqueous solutions at neutral *** results demonstrate that WH exhibits an excellent Pb2+absorption capacity of 2339 mg g^(−1),which is 1.68 times higher than the recorded value for ***,the absorbed Pb^(2+) ions are recycled into high-purity PbI_(2).This is employed as a precursor for the fabrication of perovskite solar cells(PSCs),resulting in a conversion efficiency of 19.00%comparable to that of commercial PbI2 powder(99.99%purity).Our approach provides an efficient way to remove Pb^(2+)ions from water and reuse them in the recycling of PSCs.

关键词： Pb absorption Pb recycling perovskite solar cells water purification whitlockite

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Characterization of plasma electrolytic oxide formed on AZ91 Mg alloy in KMnO_4 electrolyte

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中国有色金属学会会刊：英文版 2009年第4期19卷 829-834页

作者： Duck-Young hwang ki-Ryong SHIN Bongyoung YOO Dong-Heon LEE Deok-Yong PARK Dong-Hyuk SHIN Department of Metallurgy and Materials Science Hanyang University Ansan 426-791 Korea Department of Applied Materials Engineering Hanbat National University Daejon 305-719 Korea 不详

The aim of this work is to investigate microstructure,corrosion resistance characteristics and nanohardness of the oxide layer on AZ91 Mg alloy by applying different voltage with KMnO4 contained *** are lots of closed pores that are filled with another oxide compound compared with the typical surface morphology with pore coated until 350 V of coating *** thickness of oxide layer increases with increasing coating *** oxide layer formed on AZ91 Mg alloy in electrolyte with potassium permanganate consists of MgO and *** potential of the oxide layer on AZ91 Mg alloy obtained at different plasma electrolytic oxidation(PEO) reaction stages increases with increasing coating *** corrosion resistance of AZ91 Mg alloy depends on the existence of the manganese oxide in the oxide *** inner barrier layer composed of the MgO and Mn2O3 may serve as diffusion barrier to enhance the corrosion resistance and may partially explain the excellent anti-corrosion performance in corrosion *** values increase with increasing coating *** increase in the nanohardness may be due to the effect of manganese oxide in the oxide layer on AZ91 Mg alloy coated from electrolyte containing KMnO4.

关键词： AZ91镁合金等离子体电解高锰酸钾氧化特性电解液氧化层厚度纳米硬度耐腐蚀性

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Impact of miRNAs on cardiovascular aging

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Journal of Geriatric Cardiology 2015年第5期12卷 569-574页

作者： Seahyoung Lee Eunhyun Choi Min-Ji Cha Ae-Jun Park Cheesoon Yoon ki-Chul hwang Institute for Bio-Medical Convergence College of Medicine Catholic Kwandong University Gangneung-sL Gangwon-do South Korea Catholic Kwandong University International St. Mary's Hospital Incheon Metropolitan City South Korea Department of Healthcare Management College of Medicine Catholic Kwandong University Gangneung-si Gangwond-do South Korea Department of Cardiovascular & Thoracic Surgery College of Medicine Catholic Kwandong University Gangneung-si Gangwond-do South Korea

Aging is a multidimensional process that leads to an increased risk of developing severe diseases, such as cancer and cardiovascular, neurodegenerative, and immunological diseases. Recently, small non-coding RNAs known as microRNAs （miRNAs） have been shown to regulate gene expression, which contributes to many physiological and pathophysiological processes in humans. Increasing evidence suggests that changes in miRNA expression profiles contribute to cellular senescence, aging and aging-related diseases. However, only a few miRNAs whose functions have been elucidated have been associated with aging and/or aging-related diseases. This article reviews the currently available findings regarding the roles of aging-related miRNAs, with a focus on cardiac and cardiovascular aging.

关键词： Aging heart Cardiovascular aging miRNA Senescence Vascular aging

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Effect of serum testosterone and percent tumor volume on extra-prostatic extension and biochemical recurrence after laparoscopic radical prostatectomy

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Asian Journal of Andrology 2016年第1期18卷 54-59页

作者： Eu Chang hwang Seong Hyeon Yu Yang Hyun Jo Seung I1 jung Taek Won Kang Dong Deuk Kwon Chan Choi Suk Hee Heo Jun Eul hwang Sung-Hoon jung Tae-Young jung Department of Urology Chonnam National University Medical School Gwangju Republic of Korea Department of Pathology Chonnam National University Medical School Gwangju Republic of Korea Department of Radiology Chonnam National University Medical School Gwangju Republic of Korea Department of Hemato-oncology Chonnam National University Medical School Gwangju Republic of Korea Department of Neurosurgery Chonnam National University Medical Schoo Gwangju Republic of Korea

Several studies have revealed that the preoperative serum testosterone and percent tumor volume （PTV） predict extra-prostatic extension （EPE） and biochemical recurrence （BCR） after radical prostatectomy. This study investigated the prognostic significance of serum testosterone and PTV in relation to EPE and BCR after laparoscopic radical prostatectomy （LRP）. We reviewed 520 patients who underwent LRP between 2004 and 2012. PTV was determined as the sum of all visually estimated tumor foci in every section. BCR was defined as two consecutive increases in the postoperative prostate-specific antigen （PSA）〉0.2 ng ml^-1. The threshold for serum total testosterone was 3.0 ng ml^-1, Multivariate logistic regression was used to define the effect of variables on the risk of EPE and BCR. A low serum testosterone （〈3.0 ng ml^-1） was associated with a high serum PSA, Gleason score, positive core percentage of the prostate biopsy, PTV, and all pathological variables. On multivariate analysis, similar to previous studies, the serum PSA, biopsy positive core percentage, Gleason score, and pathological variables predicted EPE and BCR. In addition, low serum testosterone （〈3.0 ng ml^-1, adjusted OR, 8.52; 95% CI, 5.04-14.4, P = 0.001） predicted EPE and PTV （adjusted OR, 1.02; 95% CI, 1.01-1.05, P = 0.046） predicted BCR. In addition to previous predictors of EPE and BCR, low serum testosterone and PTV are valuable predictors of EPE and BCR after LRP.

关键词： biochemical recurrence extra-prostatic extension prostate neoplasms prostatectomy testosterone tumor burden

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A novel visible-light Nd-doped CdTe photocatalyst for degradation of Reactive Red 43:Synthesis,characterization,and photocatalytic properties

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Journal of Rare Earths 2016年第1期34卷 45-54页

作者： Younes HANIFEHPOUR Nazanin HAMNABARD Bamin KHOMAMI Sang Woo JOO Bong-ki MIN Jae Hak jung School of Mechanical Engineering Yeungnam University Department of Chemical and Biomolecular Engineering University of Tennessee Center for Research Facilities Yeungnam University School of Chemical Engineering Yeungnam University

Novel high-efficiency visible-light-sensitive Nd-doped CdTe nanoparticles were prepared with various doping concentra- tions of neodymium ion by a facile hydrothermal method. The reaction products were analyzed via X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, photoelectron spectroscopy （XPS）, and UV-Vis diffuse re- flectance spectroscopy techniques. Red shift was seen in the absorption band edge peak in the UV-Vis absorbance specmun with in- creasing Nd content. The XRD and XPS results confirmed that Nd ions successfully replaced Cd atoms and were incorporated into the crystal lattice of CdTe. SEM and TEM images indicated spherical structure and high crystallinity. Even at a very low Nd/CdTe molar ratio of 2 mol.%, Nd doping could greatly enhance the photocatalytic activity of CdTe. The photocatalytic activity of Nd-doped CdTe nanoparticles was evaluated by monitoring the decolorization of RRed 43 in aqueous solution under visible-light irradiation. The color removal efficiency of Nd0.08Cd0.9eYe and pure CdTe were 83.14% and 14.32% after 100 min of treatment, respectively. Among different amounts of the doping agent, 8 tool.% Nd indicated the highest decolorization. The presence of radical scavengers such as CF, CO3-, SO4〉, and huthanol was found to reduce the decolorization efficiency.

关键词： neodymium cadmium telluride hydrothermal photocatalyst rare earths

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Allele-specific PCR genotyping of the HSP70 gene polymorphism discriminating the green and red color variants sea cucumber (Apostichopus japonicus)

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Journal of Genetics and Genomics 2011年第8期38卷 351-355页

作者： jung-Ha Kang ki Hwan Yu jung-Youn Park Chul-Min An Je-Cheon Jun Sang-Jun Lee Biotechnology Research Division NFRDIBusan 619-705Republic of Korea Aquaculture Management Division NFRDIBusan 619-705Republic of Korea

Color variation is a well-known feature of sea cucumbers （Apostichopus japonicus）, which are classified into three groups based on their colors of red, green and black. It is also one of the most important traits related to how they taste, and it thereby affects their market price. Attempts were made to identify single-nucleotide polymorphisms （SNPs） and to analyze differences associated with SNP genotypes between green and red color variants using HSP70 as the target gene. The HSP70 gene, which is found universally in organisms from bacteria to humans, is one of the most evolutionarily conserved genes and the most widely studied biomarker of stress response. DNA fragments of 1074 bp covering a partial sequence of the sea cucumber HSP70 gene, were amplified from both red and green variants, and subsequently analyzed for the presence of SNPs. Twenty-seven polymorphic sites in total, including heterozygous sites, were observed. Of these, six sites were found to be significantly different SNP genotypes between green and red variants. Furthermore, PCR with an internal primer designed to include an allelespecific SNP at the 3＇ end （site 443） showed differentiation between the two variants, 100% and 4.2% amplification in green and red variants, respectively. The validated SNPs may serve as informative genetic markers that can be used to distinguish variants at the early developmental stage, prior to color differentiation.

关键词： Sea cucumber HSP70 SNP Color variant

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Overcoming the penetration depth limit in optical microscopy:Adaptive optics and wavefront shaping

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Journal of Innovative Optical Health Sciences 2019年第4期12卷 3-20页

作者： Cheolwoo Ahn Byungjae hwang kibum Nam Hyungwon Jin Taeseong Woo jung-Hoon Park Department of Biomedical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan South Korea

Despite the unique advantages of optical microscopy for molecular specific high resolution imaging of living structure in both space and time,curent applications are mostly limited to research *** is due to the aberrations and multiple scattering that is induced by the inhomogeneous refractive boundaries that are inherent to biological ***,recent developments in adaptive optics and wavefront shaping have shown that high resolution optical imaging is not fundamentally limited only to the observation of single cells,but can be significantly enhanced to realize deep tissue *** provide insight into how these two closely related fields can expand the limits of bio imaging,we review the recent progresses in their performance and applicable range of studies as well as potential future research directions to push the limits of deep tissuse imnaging.

关键词： Adaptive optics wavefront shaping optical aberration multiple scattering in-viuo imaging

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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

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