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Diffusion characteristics of HTO and 99TcO_4^- in compacted Gaomiaozi(GMZ) bentonite

Nuclear science and Techniques 2017年第5期28卷 60-67页

作者： Tsuey-Lin Tsai shih-Chin Tsai Yu-Hung shih Liang-Cheng Chen Chuan-Pin lee Te-Yen su Chemistry Division Institute of Nuclear Energy ResearchNo. 1000 Wenhua Rd. Jiaan Village Longtan DistrictTaoyuan China Nuclear science and Technology Development Center National Tsing Hua University Hsinchu China Department of Earth sciences National Cheng Kung University No. 1 University Road Tainan China

The characteristics of diffusion are essential to the transport of radionuclides through buffer/backfill materials, such as bentonite, which are commonly found in waste repositories. This study used through-diffusion techniques to investigate the diffusion behavior of HTO and ^(99)TcO_4^- on GMZ bentonite of various densities. Diffusion rates were calculated by measuring the diffusion coefficients(De, Da), plotting breakthrough curves and interpreting experiment data. The apparent and effective diffusion coefficients of HTO ranged from(1.68 ± 0.40) 9 × 10^(-11) to(2.80 ± 0.62) 9 × 10^(-11) m^2/s and from(4.61 ±1.28) 9 × 10^(-12) to (16.2 ± 2.50) 9 × 10^(-12) m^2/s, *** apparent and effective diffusion coefficients of^(99)TcO_4^-ranged from(5.26 ± 0.16) 9 × 10^-12to(7.78 ± 0.43) 9× 10^-12m^2/s and from(1.49 ± 0.002) 9 × 10^(-12) to(4.16 ±0.07) 9 × 10^(-12) m^2/s, respectively. The distribution coefficients of HTO and^(99)TcO_4^-ranged from(0.70 ± 0.12) 9× 10^(-2) to(1.36 ± 0.53) 9 × 10^(-2) mL/g and from(1.12 ±0.06) 9 × 10^(-2) to(5.79 ± 2.22) 9 × 10^(-2) mL/g, *** Deand Kdvalues were shown to decrease with an increase in the bulk dry density of compacted bentonite. Our results show that HTO and ^(99)Tc could be considered nonsorbent radionuclides. The data obtained in this studyprovide a valuable reference for the safety assessment of waste repositories.

关键词： Distribution coefficient Apparent diffusion coefficient Effective diffusion coefficient Compacted bentonite Through-diffusion

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Global hypomethylation in hepatocellular carcinoma and its relationship to aflatoxin B_1 exposure

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World Journal of Hepatology 2012年第5期4卷 169-175页

作者： Hulya Yazici Ming-Whei Yu Po-Huang lee Regina M santella Department of Oncology Oncology InstituteIstanbul UniversityIstanbul 34093Turkey Graduate Institute of Epidemiology College of Public HealthNational Taiwan University Department of surgery College of MedicineNational Taiwan University Department of Environmental Health sciences Mailman School of Public Health of Columbia University630 W 168 Th St.New YorkNY 10032United States

AIM:To determine global DNA methylation in paired hepatocellular carcinoma(HCC) samples us.ng several different assays and explore the correlations between hypomethylation and clinical parameters and biomarkers,including that of aflatoxin B 1 ***:Us.ng the radio labeled methyl acceptance assay as a measure of global hypomethylation,as well as two repetitive elements,including satellite 2(sat2) by MethyLight and long interspersed nucleotide elements(LINE1),by ***:By all three assays,mean methylation levels in tumor tissues were significantly lower than that in adjacent *** acceptance assay log(mean ± sD) disintegrations/min/ng DNA are 70.0 ± 54.8 and 32.4 ± 15.6,respectively,P = 0.040;percent methylation of sat2 42.2 ± 55.1 and 117.9 ± 88.8,respectively,P spectively,P s,a measure of exposure to this dietary carcinogen,were inversely correlated with LINE1 methylation(r =-0.36,P = 0.034).CONCLUsION:Consistent hypomethylation in tumor compared to adjacent tissue was found by the three different *** 1 exposure is associated with DNA global hypomethylation,suggesting that chemical carcinogens may influence epigenetic changes in humans.

关键词： Hepatocellular carcinoma Epigenetics Hypomethylation [3 H]-methyl acceptance assay satellite 2 Long interspersed nucleotide element-1 Aflatoxin B_1

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Anomaly Based Camera Prioritization in Large scale surveillance Networks

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Computers, Materials & Continua 2022年第2期70卷 2171-2190页

作者： Altaf Hussain Khan Muhammad Hayat Ullah Amin Ullah Ali shariq Imran Mi Young lee seungmin Rho Muhammad sajjad Department of software Sejong University143-747SeoulKorea Digital Image Process.ng Lab Islamia College Peshawar25000Pakistan Color Lab Department of Computer ScienceNorwegian University of Science and Technology(NTNU)2815GjovikNorway CORIs Institute Oregon State University97331OregonUSA

Digital surveillance systems are ubiquitous and continuously generate massive amounts of data,and manual monitoring is required in order to recognise human activities in public *** surveillance systems that can automatically identify normal and abnormal activities are highly desirable,as these would allow for efficient monitoring by selecting only those camera feeds in which abnormal activities are *** paper proposes an energy-efficient camera prioritisation framework that intelligently adjusts the priority of cameras in a vast surveillance network us.ng feedback from the activity recognition *** proposed system addresses the limitations of existing manual monitoring surveillance systems us.ng a three-step *** the first step,the salient frames are selected from the online video stream us.ng a frame differencing method.A lightweight 3D convolutional neural network(3DCNN)architecture is applied to extract spatio-temporal features from the salient frames in the second ***,the probabilities predicted by the 3DCNN network and the metadata of the cameras are processed us.ng a linear threshold gate sigmoid mechanism to control the priority of the *** proposed system performs well compared to state-of-theart violent activity recognition methods in terms of efficient camera prioritisation in large-scale surveillance *** experiments and an evaluation of activity recognition and camera prioritisation showed that our approach achieved an accuracy of 98%with an F1-score of 0.97 on the Hockey Fight dataset,and an accuracy of 99%with an F1-score of 0.98 on the Violent Crowd dataset.

关键词： Camera prioritisation surveillance networks convolutional neural network computer vision deep learning resource-constrained device violent activity recognition

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Visible light induced catalytic properties of Cdse-graphene nanocomposites and study of its bactericidal effect

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Chinese Chemical Letters 2014年第6期25卷 941-946页

作者： Kefayat Ullah Young-Hee Kim Byung-Eui lee sun-Bok Jo Lei Zhu shu Ye Won-Chun Oh Department of Advanced Materials science﹠Engineering Hanseo University Department of Immunology College of MedicineSoonchunhyang UniversityCheonan 330-721Republic of Korea Department of Chemistry Soonchunhyang UniversityAsanChungnam 336-745Republic of Korea

A novel composite, Cdse-graphene, was synthesized us.ng facile hydrothermal method. The structural characteristics studies of the synthesized composites were investigated by X-ray diffraction （XRD）, scanning electron microscope （sEM）, transmission electron microscope （TEM）, Brunauer, Emmett, Teller specific surface area （BET） and X-ray photoelectron spectroscopy （XPs）. The photocatalytic activity was investigated by the degradation of methylene blue as standard dye. The degradation of M8 was calculated based on the decrease in concentration of the dye with respect to regular time intervals. The reusability tests were done to investigate the stability of the used catalysts. Additionally the antibacterial activity of Cdse-graphene was also investigated us.ng bacterium streptococcus aureus （s. aureus）.

关键词： semiconductors Hydrothermal method Antimicrobial Photocatalysis

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Early testing of insulin resistance: a tale of two lipid ratios in a group of 5th graders screened by the Coronary Artery Risk Detection in Appalachian Communities Project (CARDIAC Project)

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World Journal of Pediatrics 2019年第4期15卷 398-404页

作者： Charles Ituka Mosimah Christa Lilly Awung-Njia Forbin Pamela J.Murray lee Pyles Elloise Elliot William Neal West Virginia University MorgantownUSA University of Yaounde I YaoundeCameroon

Background In West Virginia (WV),47% of fifth-grade children are either overweight or *** is no clear consensus regarding the definition of insulin resistance in children,and directly measuring insulin on the population level is *** proposed measures examined further in this study include triglyceride (TRIG)/high-density lipoprotein cholesterol (HDL-C) ratio and TRIG/low-density lipoprotein (LDL-C) *** purpose of this study is to examine the relationship between TRIG/HDL-C ratio,TRIG/LDL-C ratio and insulin resistance in fifth-graders with acanthosis nigricans (AN).Methods Between 2007 and 2016,52,545 fifth-grade students in WV were assessed for *** glucose and insulin levels were collected only for a sub-group of students who were AN-positive and was used to determine insulin resistance us.ng the Homeostatic Model for Insulin Resistance (HOMA-IR) *** analysis included t tests and logistic regression with receiver operating characteristic *** Of the students assessed for AN,4.5% (n =2360) tested *** prevalence of insulin resistance was 79% (n =814) among 1030 with AN and complete ***/HDL-C ratio and TRIG/LDL-C ratio were significantly associated with insulin resistance (TRIG/HDL-C:Est.=0.36,P st.=0.87,P sis showed that increased body mass index (Est.=0.05,P st.=0.49,p st.=0.21,P significantly associated with insulin *** TRIG/HDL-C is a better surrogate marker of insulin resistance in AN-positive children compared to TRIG/ LDL-C ratio;so,on a population-level,cholesterol rather than insulin may be obtained for preliminary testing of early insulin resistance in children.

关键词： Acanthosis nigricans CARDIAC Project High-density lipoprotein cholesterol Insulin resistance Low-density lipoprotein cholesterol

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The Arabidopsis Floral Repressor BFT DelaysFlowering by Competing with FT for FD Bindingunder High salinity

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Molecular Plant 2014年第2期7卷 377-387页

作者： Ryu, Jae Yong lee, Hyo-Jun seo, Pil Joon Jung, Jae-Hoon Ahn, Ji Hoon Park, Chung-Mo Department of Chemistry Seoul National University Seoul 151-742 Korea Present address: Department of Chemistry Chonbuk National University Jeonju 561-756 Korea The sainsbury Laboratory University of Cambridge Cambridge UK Creative Research Initiatives Division of Life Sciences Korea University Seoul 136-701 Korea PGBI Seoul National University Seoul 151-742 Korea

soil salinity is one of the most serious agricultural problems that significantly reduce crop yields in the aridand semi-arid regions. It influences various phases of plant growth and developmental processes, such as seed germina-tion, leaf and stem growth, and reproductive propagation. salt stress delays the onset of flowering in many plant spe-cies. We have previously reported that the Arabidopsis BROTHER OF FT AND TFL1 （BFT） acts as a floral repressor undersalt stress. However, the molecular mechanisms underlying the BFT function in the salt regulation of flowering inductionis unknown. In this work, we found that BFT delays flowering under high salinity by competing with FLOWERIng LOCUsT （FT） for binding to the FD transcription factor. The flowering time of FD-deficient fd-2 mutant was insensitive to highsalinity. BFT interacts with FD in the nucleus via the C-terminal domain of FD, which is also required for the interactionof FD with FT, and interferes with the FT-FD interaction. These observations indicate that BFT constitutes a distinct saltstress signaling pathway that modulates the function of the FT-FD module and possibly provides an adaptation strategythat fine-tunes photoperiodic flowering under high salinity.

关键词： Arabidopsis BFT FD flowering time FT salt stress

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Effect of intermetallic compound thickness on anisotropy of Al/Cu honeycomb rods fabricated by hydrostatic extrusion process

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Transactions of Nonferrous Metals society of China 2016年第2期26卷 456-463页

作者： Tae-hyuk lee Moon-soo sIM sin-hyeong JOO Kyoung-tae PARK Ha-guk JEOng Jong-hyeon lee Graduate school of Department of Advanced Materials Engineering Chungnam National University Rapidly solidified Materials Research Center Chungnam National University Graduate school of Energy science & Technology Chungnam National University Rare Metal R&D Group Korea Institute of Industrial Technology Advanced Fusion Process R&D Group Korea Institute of Industrial Technology

The effect of intermetallic compound （IMC） thickness on the thermal and mechanical properties of Al/Cu honeycomb rods was investigated. The Al/Cu honeycomb rods were fabricated us.ng repeated hydrostatic extrusions at 200 ℃. During the process, an IMC layer with 1μm in thickness was generated at the Al/Cu interface. Different IMC thicknesses were obtained by post-heat treatment at 420 ℃ for 0.5 to 2 h. The IMC thickness increased to 10.1μm. The IMC layers were identified as Al2Cu （θ）, AlCu （η2）, and Al4Cu9（γ1） phases. The thermal conductivities in the longitudinal direction and cross direction decreased by 11.9% （（268±4.8） to （236±4.4） W/（m·K）） and 10.4% （（210±3.2） to （188±2.8） W/（m＆#183;K））, respectively, with increas.ng IMC thickness. The ultimate tensile strength and elongation of the Al/Cu honeycomb rod are （103±8.4） MPa and （73±6.2）%, respectively. The ultimate tensile strength increased to （131±6.5） MPa until the IMC thickness reached 7.7μm. It subsequently decreased to （124±3.9） MPa until the IMC thickness reached 10.1μm. The elongation of the Al/Cu honeycomb rod then sharply decreased to （29±2.5）% with increas.ng IMC thickness.

关键词： intermetallic compound Al/Cu honeycomb rod anisotropy thermal conductivity tensile strength hydrostatic extrusion

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轴突生长抑制因子DNA疫苗对大鼠中枢神经系统的影响(英文)

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中华神经外科疾病研究杂志 2007年第3期6卷 214-218页

作者：朱兴宝 Jasmine lee Jill Wong Wan Loo Tan 冯忠堂肖志成 Ivan ng 解放军昆明总医院神经外科云南昆明650031 国立神经科学研究所神经外科急性脑损伤研究室新加坡408433 昆明医学院神经科学研究所云南昆明650031 新加坡国立大学医学部解剖学系

目的探讨轴突生长抑制因子DNA疫苗(pcDNA-ngIs)免疫是否会对中枢神经系统造成损害。方法以pcDNA-ngIs免疫成年sprague-Dawley大鼠,免疫期间进行实验性自动免疫性脑髓鞘炎评分,同时观察实验动物的感觉运动功能和认知行为。结果以pcDNA-N... 详细信息

目的探讨轴突生长抑制因子DNA疫苗(pcDNA-ngIs)免疫是否会对中枢神经系统造成损害。方法以pcDNA-ngIs免疫成年sprague-Dawley大鼠,免疫期间进行实验性自动免疫性脑髓鞘炎评分,同时观察实验动物的感觉运动功能和认知行为。结果以pcDNA-ngIs免疫的大鼠未出现实验性自动免疫性脑髓鞘炎症状。复合神经病学评分、粘附纸条清除试验和开放场地试验表明,pcDNA-ngIs免疫不会损害实验动物的感觉运动功能。另外,被动回避试验和主动回避试验证明,pcDNA-ngIs免疫不会引起学习和记忆障碍。结论pcDNA-ngIs免疫不会损害实验大鼠中枢神经系统。

关键词： DNA疫苗轴突生长抑制因子实验性自动免疫性脑髓鞘炎感觉运动功能缺陷认知行为

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Dynamic Gain-Clamped Amplifier with Backward-Injection of a Fabry-Perot Laser

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光学学报 2003年第S1期23卷 499-500页

作者： Chien-Hung Yeh Chih-Yang Chen Chien-Chung lee sien Chi Institute of Electro-Optical Engineering Chiao-Tung University 1001 Ta Hsueh Road Hsinchu Taiwan 300

We have been experimentally demonstrated an active control technique of dynamic gain-clamped spectra for theerbium-doped fiber amplifiers (EDFA's) by a backward-injected Fabry-Perot (F-P) laser into this EDFA. In addition, employing a short length erbium-doped fiber (EDF) that not cause any gain saturation for preamplification in front of this amplifier module, it can reduce the noise figure degradation and simultaneously achieve gain variation from 11.1 dB to 0.5 dB for 10 dB input power level change.

关键词： control technique fiber amplifiers noise figure input power

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Development of Jacket Platform Tsunami Risk Rating system in Waters Offshore North Borneo

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Journal of Marine science and Application 2016年第3期15卷 307-320页

作者： H.E. lee M.s. Liew N.H. Mardi K.L. Na Iraj Toloue s.K Wong Offshore Engineering Centre Universiti Teknologi PETRONA& 32610 Perak Malaysia Faculty of Geoscience and Petroleum Engineering Universiti Teknologi PETRONAS 32610 Perak Malaysia Department of Civil Engineering Univerisiti Tenaga Nasional Selangor 43650 Malaysia Department of Civil & Environmental Engineering Universiti Teknologi PETRONAS 32610 Perak Malaysia

This work details the simulation of tsunami waves generated by seaquakes in the Manila Trench and their effect on fixed oil and gas jacket platforms in waters offshore North Borneo. For this study, a four-leg living quarter jacket platform located in a water depth of 63 m is modelled in sACs v5.3. Malaysia has traditionally been perceived to be safe from the hazards of earthquakes and tsunamis. Local design practices tend to neglect tsunami waves and include no such provisions. In 2004, a 9.3Mw seaquake occurred off the northwest coast of Aceh, which generated tsunami waves that caused destruction in Malaysia totalling Us$ 25 million and 68 deaths. This event prompted an awareness of the need to study the reliability of fixed offshore platforms scattered throughout Malaysian waters. In this paper, we present a review of research on the seismicity of the Manila Trench, which is perceived to be high risk for southeast Asia. From the tsunami numerical model TUNA-M2, we extract computer-simulated tsunami waves at prescribed grid points in the vicinity of the platforms in the region. Us.ng wave heights as input, we simulate the tsunami us.ng sACs v5.3 structural analysis software of offshore platforms, which is widely accepted by the industry. We employ the nonlinear solitary wave theory in our tsunami loading calculations for the platforms, and formulate a platform-specific risk quantification system. We then perform an intensive structural sensitivity analysis and derive a corresponding platform-specific risk rating model.

关键词： finite element analysis North Borneo jacket platforms Manila Trench seaquake sACs TUNA-M2 tsunami simulation risk rating system risk rating model

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