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Intravoxel incoherent motion diffusion-weighted imaging for m.nitoring chemotherapeutic efficacy in gastric cancer

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World Journal of Gastroenterology 2016年第24期22卷 5520-5531页

作者： Xiao-Li Song Heoung Keun Kang Gwang Woo Jeong Kyu Youn Ahn Yong yeon Jeong Yang Joon Kang hye Jung Cho Chung m.n moon Departm.nt of Radiology Chonnam National University Medical School Chonnam National University Hwasun Hospital Departm.nt of Radiology Chonnam National University Medical School Chonnam National University Hospital Departm.nt of Anatomy Chonnam National University Medical School

AIm: To assess intravoxel incoherent motion diffusion-weighted imaging (IVIm-DWI) for m.nitoring early efficacy of chemotherapy in a hum.n gastric cancer mouse ***: IVIm-DWI was performed with 12 b-values (0-800 s/mm2) in 25 hum.n gastric cancer-bearing nude mice at baseline (day 0), and then they were randomly divided into control and 1-, 3-, 5- and 7-d treatm.nt groups (n = 5 per group). The control group underwent longitudinal mRI scans at days 1, 3, 5 and 7, and the treatm.nt groups underwent subsequent mRI scans after a specified 5-fluorouracil/calcium folinate treatm.nt. Together with tumor volumes (TV), the apparent diffusion coefficient (ADC) and IVIm parameters [true water molecular diffusion coefficient (D), perfusion fraction (f) and pseudo-related diffusion coefficient (D*)] were measured. The differences in those parameters from baseline to each measurem.nt (ΔTV%, ΔADC%, ΔD%, Δf% and ΔD*%) were calculated. After image acquisition, tumor necrosis, microvessel density (mVD) and cellular apoptosis were evaluated by hematoxylin-eosin (HE), CD31 and term.nal-deoxynucleotidyl transferase mediated nick end labeling (TUnEL) staining respectively, to confirm the imaging findings. m.nn-Whitney test and Spearm.n’s correlation coefficient analysis were ***: The observed relative volume increase (ΔTV%) in the treatm.nt group were significantly smaller than those in the control group at day 5 (ΔTVtreatm.nt% = 19.63% ± 3.01% and ΔTVcontrol% = 83.60% ± 14.87%, P = 0.008) and day 7 (ΔTVtreatm.nt% = 29.07% ± 10.01% and ΔTVcontrol% = 177.06% ± 63.00%, P = 0.008). The difference in ΔTV% between the treatm.nt and the control groups was not significant at days 1 and 3 after a short duration of treatm.nt. Increases in ADC in the treatm.nt group (ΔADC%

关键词： Gastric cancer microvessel density nude mouse model Intravoxel incoherent motion diffusion-weighted imaging Term.nal-deoxynucleoitidyl transferase mediated nick end labeling

Scheme for generating a cluster-type entangled squeezed vacuum state via cavity QED

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Chinese Physics B 2014年第4期23卷 98-101页

作者：文晶姬 yeon Kyu-Hwang 王洪福张寿 Departm.nt of Physics College of Natural Science Chungbuk National University Departm.nt of Physics College of Science Yanbian University

A scheme is proposed to generate an n-qubit cluster-type entangled squeezed vacuum state （CTESVS） based on the two-photon interaction between a two-level atom.nd the cavity fields with the cavity QED system. The CTESVS in n separate cavities can be effectively obtained after perform.ng a simple one-qubit measurem.nt on the atom. The influence of cavity decay on the CTESVS is also discussed.

关键词： cluster state squeezed vacuum state quantum entanglem.nt cavity QED

Clinical significance and usefulness of soluble heparin binding-epidermal growth factor in gastric cancer

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World Journal of Gastroenterology 2015年第7期21卷 2080-2088页

作者： hye Won Chung Hoon Young Kong Jong-Baeck Lim Departm.nt of Internal medicine Division of Gastroenterology International St. Mary’s Hospital Incheon Metropolitan City Departm.nt of Laboratory medicine Yonsei University College of Medicine Gangnam Severance Hospital

AIm:To evaluate the clinical usefulness of solubleheparin-binding epidermal growth factor(s HB-EGF)as a serum biomarker for gastric cancer(GC).mETHODS:Serum s HB-EGF levels were measured by a commercially available hum.n HB-EGF ELISA Kit and compared am.ng 60 normal controls,30 highrisk patients,37 early gastric cancer(EGC),and30 advanced gastric cancer(AGC)through AnOVA *** between serum s HB-EGF and clinicopathological features of GC were analyzed through Spearm.n’s *** diagnostic perform.nce of serum s HB-EGF for GC was evaluated through receiver operating characteristic(ROC)curve and logistic regression ***:Serum s HB-EGF levels were significantly higher in AGC group(314.4±127.5 pg/m L)than EGC(165.3±123.2 pg/m L),high-risk(98.7±67.3 pg/m L),and control(94.7±83.6 pg/m L)groups(post-hoc Bonferroni,all Pnificantly higher in EGC group than high-risk(P=0.049)and control(P=0.006)***,serum s HB-EGF levels closely correlated with depth of invasion(T-stage,γs=0.669,Pmph node metastasis(n-stage,γs=0.407,P=0.001),and distant metastasis(m-stage,γs=0.261,P=0.030).ROC curve and logistic regression analysis dem.nstrated a remarkable diagnostic potential of serum s ***:Serum s HB-EGF is closely correlated with advanced stage GC and can be a promising serological biomarker for GC.

关键词： Biomarker Diagnostic Gastric cancer Prognostic Sol

Design of 512-bit logic process-based single poly EEPROm IP

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Journal of Central South University 2011年第6期18卷 2036-2044页

作者：金丽妍 JAnG Ji-hye 余忆宁 HA Pan-Bong KIm Young-Hee Departm.nt of Electronic Engineering Changwon National University

A single poly EEPROm cell circuit sharing the deep n-well of a cell array was designed using the logic process. The proposed cell is written by the Fn tunneling scheme and the cell size is 41.26 μm2, about 37% smaller than the conventional cell. Also, a small-area and low-power 512-bit EEPROm IP was designed using the proposed cells which was used for a 900 mHz passive UHF RFID tag chip. To secure the operation of the cell proposed with 3.3 V devices and the reliability of the used devices, an EEPROm core circuit and a DC-DC converter were proposed. Simulation results for the designed EEPROm IP based on the 0.18μm logic process show that the power consumptions in read mode, program mode and erase mode are 11.82, 25.15, and 24.08 ~tW, respectively, and the EEPROm size is 0.12 mm2.

关键词： single poly EEPROm cell Fowler-nordheim tunneling logic process radio frequency identification small area

Switchable p-n-p conduction and thermoelectric properties of selenium-doped tellurium crystal

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Rare metals 2024年第11期43卷 5975-5984页

作者： Stanley Abbey Hanhwi Jang Brakowaa Frimpong Van Quang nguyen Sunglae Cho yeon Sik Jung m.n-Wook Oh Departm.nt of materials Science and Engineering Hanbat National UniversityDaejeon 34158Korea Departm.nt of materials Science and Engineering Korea Advance Institute of Science and TechnologyDaejeon 34141Korea Departm.nt of Physics and Energy Harvest-Storage Research Center University of UlsanUlsan 44610Korea

Switchable conductivity in elem.ntary semiconducting materials has a high potential for the design of diodes,transistors and energy conversion ***,the ability to utilize their physical properties is dependent on doping within the carrier density transition ***-crystal tellurium has a high Seebeck coefficient and intrinsic p-n-p conduction at room temperature and therefore,is not suitable for thermoelectric *** dem.nstrate that the addition of iso valent Se lowers the Fermi level to achieve a stable p-type conductivity with a high band degeneracy near the valence *** observed shifts in the n-p transition temperature below the intrinsic conductivity at 470 K based on changes in stoichiometry and carrier concentration above 10^(17)cm^(-3).In addition,the high thermal conductivity is significantly reduced with the increase in Se alloying due to the mass and strain *** results in a moderately high zT of 0.4 at 673 K.

关键词： Thermoelectric Single crystal Tellurium Switchable conduction

Effects of Flower Buds Extract of Tussilago farfara on Focal Cerebral Ischemia in Rats and Inflammatory Response in BV2 microglia

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Chinese Journal of Integrative medicine 2018年第11期24卷 844-852页

作者： Ji hye Hwang Vinoth Kumar R Seok Yong Kang Hyo Won Jung Yong-Ki Park Departm.nt of Acupuncture and moxibustion medicine College of Korean Medicine Gachon University Departm.nt of Herbology College of Korean Medicine Dongguk University

Objective： To investigate the effects of the flower buds extract of Tussilago farfara Linné（Farfarae Flos; FF） on focal cerebral ischemia through regulation of inflammatory responses in activated microglia. methods： Brain ischemia was induced in Sprague-Dawley rats by a transient middle cerebral artery occlusion（t mCAO） for 90 m.n and reperfusion for 24 h. Twenty rats were randomly divided into 4 groups（n=5 per group）： normal, t mCAO-induced ischemic control, t mCAO plus FF extract 300 mg/kg-treated, and t mCAO plus mK-801 1 mg/kg-treated as reference drug. FF extract（300 mg/kg, p.o.） or mK-801（1 mg/kg, i.p.） was adm.nistered after reperfusion. Brain infarction was measured by 2,3,5,-triphenyltetrazolium chloride staining. neuronal damage was observed by haematoxylin eosin, nissl staining and imm.nohistochemistry using anti-neuronal nuclei（neu n）, anti-glial fibril ary acidic protein（GFAP）, and antiCD11 b/c（OX42） antibodies in ischemic brain. The expressions of inducible nitric oxide synthase（i nOS）, tumor necrosis factor（TnF-α）, and hypoxia-inducible factor-1 a（HIF-1α） were determ.ned by Western blot. BV2 microglial cel s were treated with FF extract or its main bioactive compound, tussilagone with or without lipopolysaccharide（LPS）. nitric oxide（nO） production was measured in culture medium by Griess assay. The expressions of i nOS, COX-2 and pro-inflammatory cytokines m.nA were analyzed by reverse transcription-polymerase chain reaction. The expression of i nOS, and COX-2 proteins, the phosphorylation of ERK1/2, JnK, and p38 mAPK and the nuclear expression of nF-κB p65 in BV2 cells were determ.ned by Western blot. Results： FF extract significantly decreased brain infarctions in ischemic rats（P〈0.01）. The neuronal death and the microglia/astrocytes activation in ischemic brains were inhibited by FF extract. FF extract also suppressed i nOS, TnF-α, and HIF-1α expression in ischemic brains. FF extract（0.2 and 0.5 mg/m L, P〈0.01） and tussilagone 20 and 50 μmol/L, P〈0

关键词： Tussilago farfara focal cerebral ischemia inflammation microglia tussilagone

Soil texture affects the conversion factor of electrical conductivity from 1:5 soil-water to saturated paste extracts

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Pedosphere 2022年第6期32卷 905-915页

作者： Bo-Seong SEO Young-Jae JEOnG nu-Ri BAEK Hyun-Jin PARK hye In YAnG Se-In PARK Woo-Jung CHOI Departm.nt of Rural and Bio-systems Engineering(BK21) Chonnam National UniversityGwangju 61186(Republic of Korea) Departm.nt of Renewable Resources University of AlbertaEdmontonAlberta T6G 2E3(Canada) max Planck Institute for Biogeochemistry Jena 07745(Germany) national Institute of Environm.ntal Research Incheon 22689(Republic of Korea) AgriBio Institute of Climate Change m.nagem.nt Chonnam National UniversityGwangju 61186(Republic of Korea)

Electrical conductivity(EC)of soil-water extracts is comm.nly used to assess soil ***,its conversion to the EC of saturated soil paste extracts(ECe),the standard measure of soil salinity,is currently required for practical *** m.ny regression models can be used to obtain ECe from the EC of soil-water extracts,the application of a site-specific model to different sites is not straightforward due to confounding soil factors such as soil *** study was conducted to develop a universal regression model to estimate a conversion factor(CF)for predicting EC_(e) from EC of soil-water extracts at a 1:5 ratio(EC_(1:5)),by employing a site-specific soil texture(i.e.,sand content).A regression model,CF=8.9105e^(0.0106sand)/1.2984(r^(2)=0.97,Pn the results of coastal saline soil surveys(n=173)and laboratory experim.nts using artificial saline soils with different textures(n=6,sand content=10%-65%)and salinity levels(n=7,salinity=1-24 dS m^(-1)).model perform.nce was validated using an independent dataset and dem.nstrated that EC_(e) prediction using the developed model is more suitable for highly saline soils than for low saline *** feasibility of the regression model should be tested at other *** soil factors affecting EC conversion factor also need to be explored to revise and improve the model through further studies.

关键词： coastal saline soils electrical conductivity prediction reclaimed tideland regression model sand content saturation percentage soil salinity

Developm.nt of an analytical method for multi-residue quantification of 18 anthelm.ntics in various animal-based food products using liquid chromatography-tandem mass spectrometry

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Journal of Pharmaceutical Analysis 2021年第1期11卷 68-76页

作者： Kyung-Hee Yoo Da-Hee Park A.m.Abd El-Aty Seong-Kwan Kim Hae-ni Jung Da-hye Jeong Hee-Jung Cho Ahmet Hacimuftuoglu Jae-Han Shim Ji Hoon Jeong Ho-Chul Shin Departm.nt of Veterinary Pharmacology and Toxicology College of Veterinary MedicineKonkuk UniversitySeoul143-701Republic of Korea State Key Laboratory of Biobased material and Green Papermaking College of Food Science and EngineeringQilu University of TechnologyShandong Academy of ScienceJinan250353China Departm.nt of Pharmacology Faculty of Veterinary MedicineCairo University12211GizaEgypt Departm.nt of medical Pharmacology Medical FacultyAtaturk UniversityErzurum25240Turkey Departm.nt of Veterinary Physiology College of Veterinary MedicineKonkuk UniversitySeoul143-701Republic of Korea natural Products Chemistry Laboratory College of Agriculture and Life SciencesChonnam National UniversityGwangju500-757Republic of Korea Departm.nt of Pharmacology College of MedicineChung-Ang UniversitySeoul156-756Republic of Korea

In this study,we developed a simple screening procedure for the determ.nation of 18 anthelm.ntics(including benzimidazoles,macrocyclic lactones,salicylanilides,substituted phenols,tetrahydropyrimidines,and imidazothiazoles)in five animal-derived food matrices(chicken muscle,pork,beef,milk,and egg)using liquid chromatography-tandem mass *** were extracted using acetonitrile/1% acetic acid(milk and egg)and acetonitrile/1% acetic acid with 0.5 mL of distilled water(chicken muscle,pork,and beef),and purified using saturated n-hexane/acetonitrile.A reversed-phase analytical column and a mobile phase consisting of(A)10 mm amm.nium formate in distilled water and(B)methanol were used to achieve optimal chromatographic ***-matched standard calibration curves(R^(2)≥0.9752)were obtained for concentration equivalent to ×1/2,×1,×2,×3,×4,and×5 fold the maximum residue limit(mRL)stipulated by the Korean m.nistry of Food and Drug *** of 61.2e118.4%,with relative standard deviations(RSDs)of ≤19.9%(intraday and interday),were obtained for each sample at three spiking concentrations(×1/2,×1,and ×2 the mRL values).Limits of detection,limits of quantification,and matrix effects were 0.02e5.5 mg/kg,0.06e10 mg/kg,and -98.8 to 13.9%(at 20 μg/kg),*** five samples of each food matrix(chicken muscle,pork,beef,milk,and egg)purchased from large retailers in Seoul that were tested,none of the target analytes were *** has therefore been shown that this protocol is adaptable,accurate,and precise for the quantification of anthelm.ntic residues in foods of animal origin.

关键词： Anthelm.ntics Tandem mass spectrometry Animal-based food products Residue analysis method validation

Assessm.nt of pathogens and risk factors associated with bloodstream infection in the year after pediatric liver transplantation

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World Journal of Gastroenterology 2022年第11期28卷 1159-1171页

作者： yeong Eun Kim Ho Jung Choi hye-Jin Lee Hyun Ju Oh mi Kyoung Ahn Seak Hee Oh Jung-m.n namgoong Dae yeon Kim Won Kyoung Jhang Seong Jong Park Dong-Hwan Jung Deok Bog moon Gi-Won Song Gil-Chun Park Tae-Yong Ha Chul-Soo Ahn Ki-Hun Kim Shin Hwang Sung Gyu Lee Kyung mo Kim Departm.nt of Pediatrics Asan Medical Center Children's HospitalUniversity of Ulsan College of MedicineSeoul 05505South Korea Division of Pediatric Surgery Department of SurgeryAsan Medical Center Children's HospitalUniversity of Ulsan College of MedicineSeoul 05505South Korea Division of Hepatobiliary Surgery and Liver Transplantation Department of SurgeryAsan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea

BACKGROUnD Bloodstream infection(BSI)is one of the most significantly adverse events that can occur after liver transplantation(LT)in *** To analyze the profile of BSI according to the postoperative periods and assess the risk factors after pediatric *** Clinical data,collected from medical charts of children(n=378)who underwent primary LT,were retrospectively *** primary outcome considered was BSI in the first year after *** and multivariate analyses were performed to identify risk factors for BSI and respective odds ratios(ORs).RESULTS Of the exam.ned patients,106(28%)experienced 162 episodes of pathogen-confirmed BSI during the first year after *** were 1.53±0.95 episodes per children(mean±SD)am.ng BSIcomplicated patients with a median onset of 0.4 mo *** most comm.n pathogenic organisms identified were Coagulase-negative staphylococci,followed by Enterococcus *** Streptococcus *** half(53%)of the BSIs were of unknown *** analysis dem.nstrated that young age(≤1.3 year;OR=2.1,P=0.011),growth failure(OR=2.1,P=0.045),liver support system(OR=4.2,P=0.008),and hospital stay of>44 d(OR=2.3,P=0.002)were independently associated with BSI in the year after *** BSI was frequently observed in patients after pediatric LT,affecting survival *** profile of BSI may inform clinical treatm.nt and m.nagem.nt in high-risk children after LT.

关键词： Bloodstream infection Liver transplantation Children Pathogens