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Science china Earth Sciences 2011年第12期54卷 1830-1844页

作者： whang y. c catholic University.of America

Interaction of the solar wind with the interstellar medium leads to the formation of the heliosphere and termination shock. This article addresses three aspects of the plasma and magnetic field on two sides of the heliopause：（1） The interstellar magnetic field surrounding the heliopause. In the limit of very.low plasma β-ratio an analy.ical solution is obtained for the 3D interstellar magnetic field by.means of a line dipole method. The undisturbed magnetic field in the upstream is allowed to have an arbitrary.inclination angle. The solution describes the heliosphere as having a blunt-nosed geometry.on the upwind side and approaching a cy.indrical geometry.on the downwind side. The distortion of the magnetic field can penetrate very.deep into the interstellar space. （2） Interaction of the interstellar neutral hy.rogen with the global solar wind. The ionization process leads to removal of interstellar neutral hy.rogen in the heliosphere： on the upwind side, 90% of hy.rogen depletion occurs inside 60 AU, the hy.rogen density.changes rapidly.inside 10 AU. A hy.rogen cavity.forms inside -4 AU; the cavity.extends on the downwind side to form a long cavity.wake. Outside the cavity.and cavity.wake, pickup protons are produced, they.cause deceleration and heating of the solar wind. The wind speed and temperature also increase steadily.with heliolatitude caused by.the latitudinal increase in wind speed at the inner boundary. （3） The global geometry.of the termination shock. The termination shock has been treated as having a closed geometry.in previous heliosphere models. This study.presents a new perspective that the global termination shock may.have a bow-shaped open geometry. The termination shock forms on the upwind side because the forward motion of the supersonic solar wind is blocked at the blunt-nosed heliopause. However, the heliopause likely.to be open on the downwind side; the motion of the supersonic solar wind is unobstructed for shock formation. Thus, the globa

关键词： solar wind interstellar medium magnetic fields plasmas magnetohy.rody.amics (MHD)

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Image-Based Lifelogging: User Emotion Perspective

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computers, Materials & continua 2021年第5期67卷 1963-1977页

作者： Junghy.n Bum Hy.nseung choo Joy.e Jiy.ung whang college of computing Sungkyunkwan UniversitySuwon16417Korea School of computing KAISTDaejeon34141Korea

Lifelog is a digital record of an individual’s daily.*** collects,records,and archives a large amount of unstructured data;therefore,techniques are required to organize and summarize those data for easy.*** has been utilized for diverse applications including healthcare,self-tracking,and entertainment,among *** regard to the imagebased lifelogging,even though most users prefer to present photos with facial expressions that allow us to infer their emotions,there have been few studies on lifelogging techniques that focus upon users’*** this paper,we develop a sy.tem that extracts users’own photos from their smartphones and congures their lifelogs with a focus on their *** design an emotion classier based on convolutional neural networks(cNN)to predict the users’*** train the model,we create a new dataset by.collecting facial images from the celebFaces Attributes(celebA)dataset and labeling their facial emotion expressions,and by.integrating parts of the Radboud Faces Database(RaFD).Our dataset consists of 4,715 high-resolution *** propose Representative Emotional Data Extraction Scheme(REDES)to select representative photos based on inferring users’emotions from their facial *** addition,we develop a sy.tem that allows users to easily.congure diaries for a special day.and summaize their *** experimental results show that our method is able to effectively.incorporate emotions into lifelog,allowing an enriched experience.

关键词： Lifelog facial expression emotion emotion classier transfer learning

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Study.of the electric field and wall voltage in a high pressure ac-PDP cell by.laser induced fluorescence spectroscopy

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chinese Phy.ics B 2004年第6期13卷 789-793页

作者：周艳 K.W.whang J.H.y.ng D.c.Jeong c.H.Ha y.W.choi SchoolofOptoelectronicInformation UniversityofElectronicScienceandTechnologyofChinaChengdu610054China SchoolofElectricalEngineering SeoulNationalUniversitySan56-1Shinlim-dongKwanak-guSeoul151-742Korea KoreaElectrotechnology.esearchInstitute Changwon641-600Korea

The electric field in a surface discharge ty.e ac-PDP cell with He or He/Xe(0.1%) mixture has been measured over a wide range of pressure (5 50kP1 using laser induced fluorescence detection. The wall voltage was estimated from the measured electric field. The Stark manifolds of triplet atomic helium Ry.berg state (2s3S) with principal quantum numbers (n=8 and 9) have been used to measure the electric field, as the lifetime of 2s3S is longer than the single atomic helium Ry.berg state (2s1S) in high pressure discharge. comparison of the Stark manifolds between the n=9 and n=8shows that the measurement accuracy.of electric field can be increased by.10%. The maximum electric field strength during discharge and the wall voltage at the end of pulse decreases with the increase of pressure. The comparison of He and He/Xe(0.1%) discharge at 13kPa showed that He/Xe gas mixture discharge can accumulate more wall charge on MgO surface and the electric field was somewhat higher than those of pure helium discharge during pulse off period under the same discharge conditions.

关键词： plasma display.panel laser induced fluorescence electric field measurement

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Ac-PDP中等离子体电场的实验研究

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核聚变与等离子体物理 2003年第2期23卷 108-112页

作者：周艳 Ki-Woong whang J H y.ng D c Jeong c H Ha 核工业西南物理研究院成都610041 国立汉城大学

用激光荧光技术直接测量了Ac PDP单元高气压He和He Xe0 1%放电中的电场行为,估算了由放电电场产生的Ac PDP单元上的壁电压。选用高气压下寿命较长的氦的亚稳态2s3S,比较主量子数n=8和n=9的Stark分裂谱,使电场的测量精度提高到10%。电场... 详细信息

用激光荧光技术直接测量了Ac PDP单元高气压He和He Xe0 1%放电中的电场行为,估算了由放电电场产生的Ac PDP单元上的壁电压。选用高气压下寿命较长的氦的亚稳态2s3S,比较主量子数n=8和n=9的Stark分裂谱,使电场的测量精度提高到10%。电场和壁电压的时间分布描述了PDP单元的放电行为。

关键词： Ac-PDP 等离子体电场实验研究激光荧光技术壁电压放电等离子体显示器

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Solar Wind in the Distant Heliosphere and the Termination Shock

Solar Wind in the Distant Heliosphere and the Termination Sh...

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第十届全国日地空间物理学术讨论会

作者： y.c whang (catholic University.of America, Washington Dc, 20064, USA)

＜正＞ Voy.ger 1 crossing of the termination shock has been predicted to occur near 34°latitude during thedeclining phase of cy.le 23. This talk is motivated by.the new development that the crossing may.havetaken place about August 1, 2002 at r≈85.5 AU [Krimigis et al., submitted to Nature, 2003]: The talk isorganized to consist of three parts.

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Occult hepatitis B virus infection and blood transfusion

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World Journal of Hepatology 2015年第3期7卷 600-606页

作者： Dong Hee Seo Dong Hee whang Eun y.ung Song Ky.u Sup Han Labgenomics clinical Laboratories Department of Laboratory.Medicine Inje University College of Medicine Seoul Paik Hospital Department of Laboratory.Medicine Seoul National University College of Medicine

Transfusion-transmitted infections including hepatitis B virus(HBV) have been a major concern in transfusion medicine. Implementation of HBV nucleic acid testing(NAT) has revealed occult HBV infection(OBI) in blood donors. In the mid-1980 s, hepatitis B core antibody.HBc) testing was introduced to screen blood donors in HBV non-endemic countries to prevent transmission of non-A and non-B hepatitis. That test remains in use for preventing of potential transmission of HBV from hepatitis B surface antigen(HBs Ag)-negative blood donors, even though anti-hepatitis c virus testshave been introduced. Studies of anti-HBc-positive donors have revealed an HBV DNA positivity.rate of 0%-15%. As of 2012, 30 countries have implemented HBV NAT. The prevalence of OBI in blood donors was estimated to be 8.55 per 1 million donations, according to a 2008 international survey. OBI is transmissible by.blood transfusion. The clinical outcome of occult HBV transmission primarily.depends on recipient immune status and the number of HBV DNA copies present in the blood products. The presence of donor anti-HBs reduces the risk of HBV infection by.approximately.five-fold. The risk of HBV transmission may.be lower in endemic areas than in non-endemic areas, because most recipients have already.been exposed to HBV. Blood safety.for HBV, including OBI, has substantially.improved, but the possibility.for OBI transmission remains.

关键词： Occult hepatitis B infection Transfusion AntihepatitisB core antibody Nucleic acid testing Bloodservice

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Plasmonic bacteria on a nanoporous mirror via hy.rody.amic trapping for rapid identification of waterborne pathogens

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Light(Science & Applications) 2018年第1期7卷 359-367页

作者： Keumrai whang Jong-Hwan Lee y.nghee Shin Wooju Lee y.ung Wan Kim Dongchoul Kim Luke P.Lee Taewook Kang Department of chemical and Biomolecular Engineering Sogang UniversitySeoul 04107Korea Berkeley.Sensor and Actuator center Departments of BioengineeringElectrical Engineering and Computer ScienceBiophysics Graduate ProgramUniversity of CaliforniaBerkeleyBerkeleyCA 94720USA Department of Mechanical Engineering Sogang UniversitySeoul 04107Korea

A rapid,precise method for identify.ng waterborne pathogens is critically.needed for effective disinfection and better ***,conventional methods,such as culture-based counting,generally.suffer from slow detection times and low ***,we developed a rapid detection method for tracing waterborne pathogens by.an innovative optofluidic platform,a plasmonic bacteria on a nanoporous mirror,that allows effective hy.rody.amic cell trapping,enrichment of pathogens,and optical signal *** designed and simulated the integrated optofluidic platform to maximize the enrichment of the bacteria and to align bacteria on the nanopores and plasmonic mirror via hy.rody.amic cell *** nanoparticles are self-assembled to form antenna array. on the surface of bacteria,such as Escherichia coli and Pseudomonas aeruginosa,by.replacing citrate with hy.roxy.amine hy.rochloride in order to amplify.the signal of the plasmonic optical *** to the sy.ergistic contributions of focused light via the nanopore geometry.self-assembled nanoplasmonic optical antennas on the surface of bacteria,and plasmonic mirror,we obtain a sensitivity.of detecting *** as low as 102 cells/ml via surface-enhanced Raman *** believe that our label-free strategy.via an integrated optofluidic platform will pave the way.for the rapid,precise identification of various pathogens.

关键词： mirror trapping precise

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超高性能混凝土的抗剪强度

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硅酸盐学报 2022年第8期50卷 2190-2195页

作者：王晓飞周海龙王海龙内蒙古农业大学水利与土木建筑工程学院呼和浩特010018

抗剪切强度指标值(黏聚力和内摩擦角)是超高性能混凝土本构关系研究和数值模拟分析的重要数据,对揭示超高性能混凝土中钢纤维的增强增韧机理至关重要。通过对4种钢纤维体积含量(0%、1%、2%和3%)的超高性能混凝土在5档围压(0、10、20、40... 详细信息

抗剪切强度指标值(黏聚力和内摩擦角)是超高性能混凝土本构关系研究和数值模拟分析的重要数据,对揭示超高性能混凝土中钢纤维的增强增韧机理至关重要。通过对4种钢纤维体积含量(0%、1%、2%和3%)的超高性能混凝土在5档围压(0、10、20、40 MPa和60 MPa)下进行常规三轴压缩试验,得到各应力路径下超高性能混凝土的轴向、径向应力应变全曲线及应力圆。应力应变全曲线图显示,围压为40MPa时,4种钢纤维超高性能混凝土在三轴压缩试验中均表现出一定的流变性质,超高性能混凝土变形性质及破坏模式由脆性开始向塑性转变。并由应力圆数据推导出每种钢纤维含量超高性能混凝土在不同围压下内摩擦角φ和黏聚力c的具体数值,并给出了内摩擦角φ和黏聚力c随钢纤维体积含量和围压增大的变化规律。结果显示:钢纤维含量相同,黏聚力随围压的增大而增大,内摩擦角随围压的增大而减小;同围压下钢纤维体积含量为2%时黏聚力最大,内摩擦角最小,有围压时钢纤维含量对内摩擦角的影响较小。

关键词：超高性能混凝土钢纤维内摩擦角黏聚力应力圆

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快速凝固钼合金的显微结构与时效硬化

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金属学报 1987年第6期 491-497页

作者：宁远涛 S.H.whang 昆明贵金属研究所 USA Barnett Institute of Northeastern University.Boston

采用电弧熔化熔体,单辊急冷和锤-砧急冷技术制备了一系列高熔点钼基合金箔与薄带试样,研究其力学性能、表面形貌和显微结构。快速凝固Mo-B,Mo-Zr-B系合金具有强的晶粒细化和时效硬化效应。造成时效硬化的相应沉淀相分别为MoB(c16,BcT)和... 详细信息

采用电弧熔化熔体,单辊急冷和锤-砧急冷技术制备了一系列高熔点钼基合金箔与薄带试样,研究其力学性能、表面形貌和显微结构。快速凝固Mo-B,Mo-Zr-B系合金具有强的晶粒细化和时效硬化效应。造成时效硬化的相应沉淀相分别为MoB(c16,BcT)和ZrB(A)。ZrB沉淀相有更高的稳定性。这些以硼化物为强化相的快速凝固钼合金具有很高的强度与硬度,表明可以采用快速凝固技术发展新的高强度钼合金。

关键词：沉淀相时效硬化沉淀硬化快速凝固超速凝固显微结构薄带电弧熔化

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Long-term hepatic consequences of chemotherapy.related HBV reactivation in ly.phoma patients

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World Journal of Gastroenterology 2005年第34期11卷 5283-5288页

作者： chi-chung Wen chao A.Hsiung Ih-Jen Su Ann-Lii cheng Ming-chih chang chao-Jung Tsao Woei-y.o Kao Wu-ching Uen chiun Hsu chih-Hung Hsu y.n-Shen Lu Hwei-Fan Tien Tsu-y. chao Li-Tzong chen Jacqueline whang-Peng Pei-Jer chen Division of Biostatics and Bioinformatics National Health Research Institutes Taipei Taiwan China Division of clinical Research National Health Research Institutes Taipei Taiwan China Department of Oncology.National Taiwan University.Hospital Taipei Taiwan China Department of Internal Medicine National Taiwan University Hospital Taipei Taiwan China Department of Internal Medicine Mackay.Memorial Hospital Taipei Taiwan China Department of Internal Medicine chi-Mei Hospital Tainan Taiwan China Department of Internal Medicine Tri-Service General Hospital Taipei Taiwan China Department of Internal Medicine Shin Kong Memorial Hospital Taipei Taiwan China Department of Oncology.National Taiwan University.Hospital Taipei Taiwan China Department of Internal Medicine National Taiwan University.Hospital Taipei Taiwan China Division of cancer Research National Health Research Institutes Taipei Taiwan China

AIM: To investigate the long-term consequences of chemotherapy.related HBV reactivation in patients with ***: This study.was based on the database of published prospective study.evaluating HBV reactivation in HBV ly.phoma patients during *** liver reserve (DLR) was defined as development of either one of the following conditions during follow-up: (1) newly.onset parenchy.a liver disease, splenomegaly.or ascites without evidence of ly.phoma involvement; (2) decrease of the ratio (albumin/globulin ratio) to less than 0.8 or increase of the ratio of INR of prothrombin time to larger than 1.2 without evidence of malnutrition or infection. Liver cirrhosis was diagnosed by.imaging ***: A total of 49 patients were included. The median follow-up was 6.2 y.ars (range, 3.9-8.1 y.ars).There were 31 patients with and 18 patients without HBV reactivation. Although there was no difference of overall survival (OS) and chemotherapy.response rate between the two groups, DLR developed more frequently.in patients with HBV reactivation (48.4% vs 16.7%; P= 0.0342). Among the HBV reactivators, HBV genoty.e c was associated with a higher risk of developing DLR (P = 0.0768) and liver cirrhosis (P = 0.003). Four of five patients with sustained high titer of HBV DNA and two of three patients with multiple HBV reactivation developed DLR. Further, patients with a sustained high titer of HBV DNA had the shortest OS among the HBV reactivators (P= 0.0000). No patients in the non-HBV reactivation group developed hepatic failure or liver ***: chemotherapy.related HBV reactivation is associated with the long-term effect of deterioration of hepatic function.

关键词： HBV reactivation Liver function Non-HodgkJn'sly.phoma, chemotherapy

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