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Microsystems & Nanoengineering 2023年第2期9卷 367-379页

作者： Geon Kook Yehhyun Jo Chaerin Oh Xiaojia Liang Jaewon Kim sang-mok lee Subeen Kim Jung-Woo Choi Hyunjoo Jenny lee School of Electrical Engineering Korea Advanced Institute of Science and Technology291 Daehak-roYuseong-guDaejeon 34141South Korea KAIST Institute for NanoCentury(KINC) 291 Daehak-roYuseong-guDaejeon 34141Republic of Korea

Transcranial focused ultrasound stimulation is a promising therapeutic modality for human brain disorders because of its noninvasiveness,long penetration depth,and versatile spatial control capability through beamforming and beam ***,the skull presents a major hurdle for successful applications of ultrasound ***,skull-induced focal aberration limits the capability for accurate and versatile targeting of brain *** addition,there lacks a fully functional preclinical neuromodulation system suitable to conduct behavioral ***,we report a miniature ultrasound system for neuromodulation applications that is capable of highly accurate multiregion targeting based on acoustic *** work includes the design and implementation of an acoustic lens for targeting brain regions with compensation for skull aberration through time-reversal recording and a phase conjugation ***,we utilize MEMS and 3D-printing technology to implement a 0.75-g lightweight neuromodulation system and present in vivo characterization of the packaged system in freely moving *** preclinical system is capable of accurately targeting the desired individual or multitude of brain regions,which will enable versatile and explorative behavior studies using ultrasound neuromodulation to facilitate widespread clinical adoption.

关键词： versatile utilize recording

Undifferentiated pleomorphic sarcoma of the liver presenting as a unilocular cyst

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Hepatobiliary & Pancreatic Diseases International 2009年第5期8卷 541-543页

作者： Hyun-Soo Kim Gou Young Kim Sung-Jig Lim sang mok lee Youn Wha Kim Departments of Pathology School of MedicineKyung Hee University1 Hoegi-dongDongdaemun-gu130-702 SeoulSouth Korea Departments of Surgery School of MedicineKyung Hee University1 Hoegi-dongDongdaemun-gu130-702 SeoulSouth Korea

BACKGROUND:A malignant fibrous histiocytoma,recently referred to as an undifferentiated pleomorphic sarcoma (UPS),is very rare in the liver,and only 34 cases of primary hepatic malignant fibrous histiocytoma have been reported in the English literature. METHODS:We report a rare case of a hepatic UPS presenting as a unilocular cystic lesion with respect to histopathologic features,the newly revised diagnostic criteria,and the differential diagnosis. RESULTS:A 60-year-old man presented for evaluation of epigastric pain of 7 months *** computed tomography revealed a hypodense,unilocular cystic mass in the right lobe of the liver,measuring 14.0×11.1 cm.A right lobectomy was ***,the cut surface showed a single,well-circumscribed unilocular cystic tumor mass containing dark red-brown necrotic debris and blood clots, which occupied most of the ***,the tumor consisted of haphazardly arranged mononuclear pleomorphic tumor cells,admixed with abundant osteoclast- like multinucleated giant ***,the tumor cells expressed vimentin *** histopathologic and immunohistochemical findings were compatible with a *** patient is alive and well 41 months after surgery without recurrence. CONCLUSIONS:Clinically,most of the hepatic UPSs are solid *** two cases have presented as multilocular cystic masses.A primary hepatic UPS presenting as a unilocular cyst has never been reported.A UPS should be included in the differential diagnosis of unilocular cystic lesions in the liver.

关键词： undifferentiated pleomorphic sarcoma malignant fibrous histiocytoma liver unilocular cyst

第74届世界铸造大会将推迟到2022年10月16-20日举办

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铸造设备与工艺 2020年第2期 14-14页

作者： Hyun-IK Cho sang-mok lee 韩国铸造学会第74届WFC大会

世界铸造大会(WFC)由世界铸造组织(简称WFO)主办,每两年召开一届。原定于2020年10月18日-22日在韩国釜山举办的“第74届世界铸造大会”受新冠疫情影响,将推迟到2022年10月16-20日举办。会议推迟声明:我们代表第74届世界铸造大会组委会,... 详细信息

世界铸造大会(WFC)由世界铸造组织(简称WFO)主办,每两年召开一届。原定于2020年10月18日-22日在韩国釜山举办的“第74届世界铸造大会”受新冠疫情影响,将推迟到2022年10月16-20日举办。会议推迟声明:我们代表第74届世界铸造大会组委会,在世界铸造组织(WFO)和韩国铸造学会的大力支持下,遗憾的宣布,由于目前COVID-19的大流行,第74届世界铸造大会(WFC)将推迟至2022年10月16-20日在相同地点,韩国釜山的BEXCO中心举办。这次延期是基于当前困难时期旅行的不确定性、今年或明年旅行的负面感觉(包括注册),以及考虑到2021年WFO的许多预先确定的日程和活动,谨慎做出的决定。有关组织/解散委员会成员,全体发言人,受邀发言人,注册人员的详细信息,以及与提交论文,期刊,参展商,赞助商和媒体相关的政策等,在详细检查每个项目后,我们将在最早的时间表上发布。对于因第74届WFC的推迟而给您带来的任何不便,我们深表歉意。在此困难时刻,为了您和家人的安全,请接受我们美好的祝愿。非常感谢您。

关键词：韩国釜山铸造学会铸造组织注册人员参展商时间表 WFC 不确定性

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第74届世界铸造大会推迟至2022年举办

铸造工程 2020年第6期44卷 57-57页

作者： Hyun-IK Cho sang-mok lee 韩国铸造学会

受新冠疫情影响,原定于2020年10月18~22日在韩国釜山举办的“第74届世界铸造大会”将推迟至2022年10月16~20日举办。世界铸造大会(WFC)由世界铸造组织(WFO)主办,每两年召开一届。会议推迟声明:我们代表第74届世界铸造大会组委会,在世界... 详细信息

受新冠疫情影响,原定于2020年10月18~22日在韩国釜山举办的“第74届世界铸造大会”将推迟至2022年10月16~20日举办。世界铸造大会(WFC)由世界铸造组织(WFO)主办,每两年召开一届。会议推迟声明:我们代表第74届世界铸造大会组委会,在世界铸造组织(WFO)和韩国铸造学会的大力支持下,遗憾地宣布,由于目前COVID-19的大流行,第74届世界铸造大会(WFC)将推迟至2022年10月16~20日在韩国釜山的BEXCO中心举办。

关键词：铸造组织铸造学会韩国釜山 WFC 世界铸造大会推迟

Application of ferrate(VI) in the treatment of industrial wastes containing metal-complexed cyanides : A green treatment

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Journal of Environmental Sciences 2009年第10期21卷 1347-1352页

作者： SEUNG-mok lee DIWAKAR Tiwari Department of Environmental Engineering Kwandong University Department of Chemistry School of Physical Sciences Mizoram University

Ferrate（VI） was employed for the oxidation of cyanide （CN） and simultaneous removal of copper or nickel in the mixed/complexed systems of CN-Cu, CN-Ni, or CN-Cu-Ni. The degradation of CN （1.00 mmol/L） and removal of Cu （0.095 mmol/L） were investigated as a function of Fe（Ⅵ） doses from 0.3-2.00 mmol/L at pH 10.0. It was found that Fe（Ⅵ） could readily oxidize CN and the reduction of Fe（Ⅵ） into Fe（Ⅲ） might serve efficiently for the removal of free copper ions. The increase in Fe（Ⅵ） dose apparently favoured the CN oxidation as well as Cu removal. Moreover, the pH dependence study （pH 10.0-13.0） revealed that the oxidation of CN was almost unaffected in the studied pH range （10.0-13.0）, however, the maximum removal efficiency of Cu was obtained at pH 13.0. Similarly, treatment was carded out for CN-Ni system having the initial Ni concentration of 0.170 mmol/L and CN concentration of 1.00 mmol with Fe（Ⅵ） dose 2.00 mmol at various pH values （10.0-12.0）. Results showed a partial oxidation of CN and partial removal of Ni. It can be observed that Fe（Ⅵ） can partially degrade the CN-Ni complex in this pH range. Further, Fe（Ⅵ） was applied for the treatment of simulated industrial waste/effluent waters treatment containing CN, Cu, and Ni.

关键词： cyanide metal-complexed cyanide oxidation copper nickel ferrate(Ⅵ)

Dielectric Barrier Discharge Plasma-Induced Photocatalysis and Ozonation for the Treatment of Wastewater

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Plasma Science and Technology 2008年第1期10卷 100-105页

作者： mok YoungSun JO Jin-Oh lee Heon-Ju Department of Chemical Engineering Cheju National University Jeju 690-756 South Korea Department of Energy Engineering Cheju National University Jeju 690-756 South Korea

The physicochemical processes of dielectric barrier discharge （DBD） such as insitu formation of chemically active species and emission of ultraviolet （UV）/visible light were utilized for the treatment of a simulated wastewater formed with Acid Red 4 as the model organic contaminant. The chemically active species （mostly ozone） produced in the DBD reactor were well distributed in the wastewater using a porous gas diffuser, thereby increasing the gas-liquid contact area. For the purpose of making the best use of the light emission, a titanium oxide-based photocatalyst was incorporated in the wastewater treating system. The experimental parameters chosen were the voltage applied to the DBD reactor, the initial pH of the wastewater, and the concentration of hydrogen peroxide added to the wastewater. The results have clearly shown that the present system capable of degrading organic contaminants in two ways （photocatalysis and ozonation） may be a promising wastewater treatment technology.

关键词： dielectric barrier discharge ozone ultraviolet light photocatalyst wastewater

Reliability of flip-chip bonded RFID die using anisotropic conductive paste hybrid material

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Transactions of Nonferrous Metals Society of China 2011年第A1期21卷 175-181页

作者： Jun-Sik lee Jun-Ki KIM mok-Soon KIM Namhyun KANG Jong-Hyun lee Advanced Joining Technology Team/Microjoining Center Korea Institute of Industrial Technology(KITECH) Yeonsu-gu Incheon 406-840 Korea School of Materials Science & Engineering Inha University Department of Materials Science & Engineering Pusan National University Department of Materials Science & Engineering Seoul National University of Technology

A reliability of flip-chip bonded die as a function of anisotropic conductive paste (ACP) hybrid materials, bonding conditions, and antenna pattern materials was investigated during the assembly of radio frequency identification(RFID) inlay. The optimization condition for flip-chip bonding was determined from the behavior of bonding strength. Under the optimized condition, the shear strength for the antenna printed with paste-type Ag ink was larger than that for Cu antenna. Furthermore, an identification distance was varied from the antenna materials. Comparing with the Ag antenna pattern, the as-bonded die on Cu antenna showed a larger distance of identification. However, the long-term reliability of inlay using the Cu antenna was decreased significantly as a function of aging time at room temperature because of the bended shape of Cu antenna formed during the flip-chip bonding process.

关键词： RFID inlay ACP flip-chip, bonding process reliability

Effect of hydrogen fluoride and magnesium oxide on AZ31 Mg alloy/carbon fiber-reinforced plastic composite by thermal laser joining technique

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Journal of Magnesium and Alloys 2024年第7期12卷 2874-2889页

作者： Andrews Nsiah Ashong Barton Mensah Arkhurst Youn Seoung lee mok-Young lee Jeoung Han Kim School of Materials Science&Engineering University of New South Wales SydneyNSW2052Australia Department of Information and Communication Engineering Hanbat National UniversityYuseong-guDaejeonSouth Korea Welding&joining research group steel solution research laboratoryPOSCOIncheonRepublic of Korea Department of Materials Science&Engineering Hanbat National UniversityYuseong-guDaejeonSouth Korea

Although hydrofluoric acid(HF)surface treatment is known to enhance the joining of metals with polymers,there is limited information on its effect on the joining of AZ31 alloy and carbon-fiber-reinforced plastics(CFRPs)through laser-assisted metal and plastic direct joining(LAMP).This study uses the LAMP technique to produce AZ31-CFRP *** joining process involves as-received AZ31,HFpretreated AZ31,and thermally oxidized HF-pretreated AZ31 alloy ***,the bonding strength of joints prepared with thermally oxidized AZ31 alloy sheets is examined to ascertain the combined effect of HF treatment and thermal oxidation on bonding *** microstructures,surface chemical interactions,and mechanical performances of joints are investigated under tensile shear *** factors,such as bubble formation,CFRP resin decomposition,and mechanical interlocking considerably affect joint ***,surface chemical interactions between the active species on metal parts and the polar amide along with carbonyl groups of polymer play a significant role in improving joint *** prepared with surface-pretreated AZ31 alloy sheets show significant improvements in bonding strength.

关键词： Thermal laser joining Thermal oxidation Hydrofluoric acid pretreatment Mechanical interlocking Covalent bonds Chemical interactions

Identification and Removal of Non-meteorological Echoes in Dual-polarization Radar Data Based on a Fuzzy Logic Algorithm

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Advances in Atmospheric Sciences 2015年第9期32卷 1217-1230页

作者： Bo-Young YE Gyu Won lee Hong-mok PARK Department of Astronomy and Atmospheric Sciences Research and Training Team for Future Creative Astrophysicists and CosmologistsKyungpook National University Center for Atmospheric REmote sensing(CARE) Kyungpook National University

A major issue in radar quantitative precipitation estimation is the contamination of radar echoes by non-meteorological targets such as ground clutter,chaff,clear air echoes *** this study,a fuzzy logic algorithm for the identification of non-meteorological echoes is developed using optimized membership functions and weights for the dual-polarization radar located at Mount *** selected precipitation and non-meteorological events,the characteristics of the precipitation and non-meteorological echo are derived by the probability density functions of five fuzzy parameters as functions of reflectivity *** membership functions and weights are then determined by these density ***,the nonmeteorological echoes are identified by combining the membership functions and *** performance is qualitatively evaluated by long-term rain *** detection accuracy of the fuzzy logic algorithm is calculated using the probability of detection（POD）,false alarm rate（FAR）,and clutter–signal ratio（CSR）.In addition,the issues in using filtered dual-polarization data are alleviated.

关键词： dual-polarization radar non-meteorological echo quality control fuzzy logic algorithm

Influence of the wastewater composition on denitrification and biological P-removal in the S-DN-P process: (c) Dissolved and undissolved substrates

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Journal of Environmental Sciences 2009年第8期21卷 1074-1079页

作者： Hee-Jeong Choi Chul-Ho Choi Seung-mok lee Diwakar Tiwari Department of Environmental Engineering Kwandong University Department of Chemistry School of Physical Sciences Mizoram University

The denitdfication and P-removal in the sorption-denitrification-P-removal （S-DN-P） process were carded out under various wastewater compositions. It is noted that P-removal largely depends on the wastewater composition as well to the quantity of the substrates present in wastewater fraction. Three different wastewater fractions are obtained as： raw wastewater, dissolved wastewater （obtained with filtration using 0.45 μm filter）, and undissolved wastewater （i.e., infiltrate obtained by above filtration）. The ratio of P-release/CODtotal-consumption clearly inferred that undissolved wastewater possess very low value i.e., 0.0008 followed by raw wastewater 0.008 and dissolved wastewater 0.03. When this ratio was nearby 0.01, enhanced P-removal was observed. Moreover, the ratio of P-uptake to NO3^--N decomposition for raw wastewater was two times for dissolved wastewater. Interestingly, it was observed that the P-removal and denitrification depend not only on the dissolved substrates but also the undissolved substrates present in the wastewater. The result of the P-removal obtained with this S-DN-P process did not show a big difference of 36%, 34% and 30%, respectively, for raw, dissolved and undissolved wastewater.

关键词： denitrification polyhydroxybutyrate sequencing batch biofilm reactor sorption denitrification P-removals