检索结果-南通市图书馆

World Journal of Gastroenterology 2008年第26期14卷 4249-4252页

作者： In Hee Kim Dae Ghon Kim Hyo Sung Kwak Hee Chul Yu baik hwan cho Ho Sung Park Division of Gastroenterology and Hepatology Department of Internal Medicine the Research Institute for Medical Sciences Chonbuk National University Medical School and Hospital Jeonju Jeonbuk 561-712 South Korea Division of Gastroenterology and Hepatology Department of Internal Medicine the Research Institute for Medical SciencesChonbuk National University Medical School and Hospital JeonjuJeonbuk 561-712 South Korea Department of Radiology Chonbuk National University Medical School and Hospital Jeonju Jeonbuk 561-712 South Korea Department of Surgery Chonbuk National University Medical School and Hospital Jeonju Jeonbuk 561-712 South Korea Department of Pathology Chonbuk National University Medical School and Hospital Jeonju Jeonbuk 561-712 South Korea

Arteriovenous fistula （AVF） involving the inferior mesenteric vessels is rare, and the affected patients usually present with abdominal pain, mass, or features of established portal hypertension. Colonic ischemia is a less common and more serious manifestation of AVE We report a case of ischemic colitis secondary to inferior mesentedc AVF in a patient who underwent a previous liver transplantation, subsequently developed portal vein stenosis, and then presented with acute lower gastrointestinal bleeding. He underwent percutaneous transhepatic placement of a portal vein stent and left colectomy.

关键词： Ischemic colitis Inferior mesenteric Arteriovenous fistula Portal vein stenosis

Probabilistic seismic performance assessment of lap-spliced RC columns retrofitted by steel wrapping jackets

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2016年第2期15卷 223-238页

作者： Eunsoo choi Heejung Youn baik-Soon cho Department of Civil Engineering Hongik University Department of Civil Engineering CTRCInje University

In this study, the seismic fragility curves of two reinforced concrete（RC） columns that were lap-spliced at the bottom and retrofitted with steel wrapping jackets were generated. Their seismic performance was probabilistically assessed in comparison to that of lap-spliced or continuous reinforcement RC columns. This study used two types of steel wrapping jackets, a full jacket and a split jacket. Analytical models of the four types of columns were developed based on the experimental results of the columns using Open SEES, which is effective in conducting nonlinear time history analyses. A suite of ten artificial ground motions, modified from recorded ground motions, was used to perform nonlinear time history analyses of the analytical models with scaling of the peak ground acceleration from 0.1 g to 1.0 g in increments of 0.1 g. The steel wrapping jackets did not increase the medians for yield（slight damage state） of the lap-spiced column and did not exceed the corresponding median of the continuous reinforcement column. However, the two steel jackets increased the medians for failure by 1.872 and 2.017 times, respectively, and exceeded the corresponding median of the continuous reinforcement column by 11.8% and 20.5%, respectively.

关键词： columns reinforcement reinforced exceed acceleration scaling median assessed split probabilistic

Growth of BaTiO_3-Ag hybrid composite films at room temperature by aerosol deposition

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2012年第S3期22卷 735-739页

作者： Young Joon YOON Sung hwan cho Jihoon KIM Hyo Tae KIM Hong Koo baik Jong-Hee KIM Nano-Convergence Intelligence Material Team Korea Institute of Ceramic Engineering and Technology Division of Advanced Materials Engineering Kongju National University Department of Materials Science and Engineering Yonsei University

Barium titanate (BaTiO3) and silver (Ag) composite film with high dielectric constant was grown at room temperature by an aerosol deposition *** dielectric constant increases by 0.5 times after adding Ag to the BaTiO3 matrix,compared with pure *** high dielectric constant can be attributed to the percolation effect of Ag inclusions in the BaTiO3 *** Ag was present in the form of discrete layer in the BaTiO3 *** dielectric properties of BaTiO3 Ag were discussed in detail taking into account the changes in microstructures.

关键词： composites percolation aerosol deposition BaTiO3 Ag

Ballistic limit velocity of small caliber projectiles against SS400 steel plates:Live fire experiments and empirical models

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第11期41卷 22-34页

作者： Jong-hwan Kim Seungwon baik Jirui Fu Joon-Hyuk Park Mechanical&Systems Engineering Korea Military Academy574 Hwarang-roNowon-guSeoul17977South Korea Mechanical and Aerospace Engineering University of Central Florida4000 Central Florida BlvdOrlandoFL 32816United States

This study presents the ballistic limit velocity of small caliber projectiles against SS400 steel plate derived from live-fire ballistic experiments. Four different small caliber projectiles were tested against SS400 steel plates of 9 mm, 10 mm, and 12 mm thicknesses. The ballistic limit velocity was calculated using two standard methods, MIL-STD-662F and NIJ-STD-0101.06, and additionally using a support vector machine algorithm. The results show a linear relationship between the plate thickness and ballistic limit velocity. Further, the relative penetration performance among five different small caliber projectiles was analyzed using the Penetration Performance Ratio(PPR) introduced in this study, which suggests the potential of PPR to predict the ballistic limit velocity of other untested materials and/or different projectiles.

关键词： Live fire ballistic experiment SS400 Ballistic limit velocity Small caliber projectile

Rice ONAC016 promotes leaf senescence through abscisic acid signaling pathway involving OsNAP

在线全文

学校读者我要写书评

暂无评论

The Crop Journal 2024年第3期12卷 709-720页

作者： Eunji Gi Sung-hwan cho Suk-hwan Kim Kiyoon Kang Nam-chon Paek Department of Agriculture Forestry and BioresourcesPlant Genomics and Breeding InstituteResearch Institute of Agriculture and Life SciencesSeoul National UniversitySeoul 08826Republic of Korea Division of Life Sciences Incheon National UniversityIncheon 22012Republic of Korea

Senescence-induced NAC(senNAC)TFs play a crucial role in senescence during the final stage of leaf *** this study,we identified a rice senNAC,ONAC016,which functions as a positive regulator of leaf *** expression of ONAC016 increased rapidly in rice leaves during the progression of dark-induced and natural *** onac016-1 knockout mutant showed a delayed leaf yellowing phenotype,whereas the overexpression of ONAC016 accelerated leaf ***,ONAC016 expression was upregulated by abscisic acid(ABA),and thus detached leaves of the onac016-1 mutant remained green much longer under ABA *** RT-PCR analysis showed that ONAC016 upregulates the genes associated with chlorophyll degradation,senescence,and ABA *** one-hybrid and dual-luciferase assays revealed that ONAC016 binds directly to the promoter regions of OsNAP,a key gene involved in chlorophyll degradation and ABA-induced *** together,these results suggest that ONAC016 plays an important role in promoting leaf senescence through the ABA signaling pathway involving OsNAP.

关键词： Rice ONAC016 OsNAP Leaf senescence Abscisic acid signaling

Subcarrier BD with Cooperative Communication for MIMO-NOMA System

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第9期72卷 5807-5821页

作者： Jung-In baik Ji-hwan Kim Beom-Sik Shin Ji-Hye Oh Hyoung-Kyu Song Department of Information and Communication Engineering and Convergence for Intelligent DroneSejong UniversitySeoul05006Korea

With the rapid evolution of Internet of things(IoT),many edge devices require simultaneous connection in 5G communication *** afford massive data of IoT devices,multiple input multiple output non-orthogonal multiple access(MIMO-NOMA)method has been considered as a promising ***,there are numerous drawbacks due to error propagation and inter-user ***,proposed scheme aims to improve the reliability of the MIMO-NOMA system with digital beamforming and intracluster cooperative multi point(CoMP)to efficiently support IoT *** the conventional MIMO-NOMA system,user entities are grouped into *** diagonalization(BD)is applied to efficiently eliminate the inter-cluster interference of the MIMO-NOMA ***,since the channel path of the data stream from a single antenna to a single cluster doesn’t hold other cluster’s data,the system can’t fully utilize the selective subcarrier channel *** indicates that there can be better channel paths for a data stream at a certain subcarrier ***,proposed scheme allocates data streams to antennas adaptively considering selective channel ***,intra-cluster CoMP method is adjusted to enhance the reliability of the system in the *** simulation results show that the proposed scheme improves BER and throughput performance compared to the conventional MIMO-NOMA system.

关键词： 5G MIMO-NOMA CoMP BD interference

Super-resolution localization photoacoustic microscopy using intrinsic red blood cells as contrast absorbers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2019年第1期8卷 212-222页

作者： Jongbeom Kim Jin Young Kim Seungwan Jeon Jin Woo baik Seong Hee cho Chulhong Kim Departments of Creative IT Engineering Electrical EngineeringMechanical Engineeringand Interdisciplinary Bioscience and BioengineeringPohang University of Science and Technology(POSTECH)77 Cheongam-roNam-guPohangGyeongbuk 37673Republic of Korea

Photoacoustic microscopy(PAM)has become a premier microscopy tool that can provide the anatomical,functional,and molecular information of animals and humans in ***,conventional PAM systems suffer from limited temporal and/or spatial ***,we present a fast PAM system and an agent-free localization method based on a stable and commercial galvanometer scanner with a custom-made scanning mirror(L-PAM-GS).This novel hardware implementation enhances the temporal resolution significantly while maintaining a high signal-to-noise ratio(SNR).These improvements allow us to photoacoustically and noninvasively observe the microvasculatures of small animals and humans in ***,the functional hemodynamics,namely,the blood flow rate in the microvasculature,is successfully monitored and quantified in *** importantly,thanks to the high SNR and fast B-mode rate(500 Hz),by localizing photoacoustic signals from captured red blood cells without any contrast agent,unresolved microvessels are clearly distinguished,and the spatial resolution is improved by a factor of 2.5 in ***-GS has great potential in various fields,such as neurology,oncology,and pathology.

关键词： resolution absorber scanner

Influence of protein characteristics and the proportion of gluten on end-use quality in Korean wheat cultivars

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2018年第8期17卷 1706-1719页

作者： Seong-Woo cho chon-Sik Kang Hyeon Seok Ko Byung-Kee baik Kwang-Min cho Chul Soo Park Department of Crop Science & Biotechnology Chonbuk National University National Institute of Crop Science Rural Development Administration Farm & Agribusiness Management Division Rural Development Administration USDA-ARS CSWQRU Soft Wheat Quality Laboratory Research Center of Bioactive Materials Chonbuk National University

The effects of protein characteristics and the proportion of gluten on end-use quality in 13 Korean wheat cultivars for three years were verified in this study. Year, cultivar, and the interaction between the year and the cultivar influenced protein characteristics, the proportion of gluten except for γ-and ω-gliadin using RP-HPLC(reversed-phase high-performance liquid chromatography), and end-use quality. Protein characteristics and the proportion of gluten in Korean wheat cultivars were between those of Australian standard white(ASW) and hard wheat(AH). Korean wheat cultivars exhibited a higher average α+β gliadin proportion than imported wheat, a γ-gliadin proportion similar to that of dark northern spring wheat, and the same ω-gliadin proportion as AH. They showed a bread-loaf volume intermediate between those of ASW and AH and a texture of cooked noodles similar to that of soft white wheat, but less springiness than imported wheat. The cookie diameter of Korean wheat cultivars was similar to that of hard red winter wheat. There was a correlation between bread-loaf volume and protein characteristics, except for the protein content in Korean wheat cultivars. Springiness and cohesiveness of cooked noodles were not correlated with protein characteristics, while hardness was correlated with the protein content and water absorption of a mixograph. Cookie diameter was negatively correlated with the sodium dodecyl sulfate(SDS) sedimentation volume and water absorption of a mixograph. The end-use quality was not correlated with any proportion of gluten composition. Principal component analysis(PCA) showed that the proportion of gluten was not related to the quality of the bread(both PCs, 81.3%), noodle(77.7%), and cookie(82.4%). PCA explained that Keumkang is suitable for superior bread, while Uri is good for cooked noodles and cookies.

关键词： wheat quality flour quality storage proteins

Self-expandable metal stents for choledocholithiasis in Billroth II gastrectomy patients

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2018年第6期17卷 546-552页

作者： Min-Gui Han Eunae cho Chang-hwan Park Chung-hwan Jun Seon-Young Park Division of Gastroenterology Department of Internal MedicineChonnam National University Hospital42Jaebong-roDong-KuGwangju 61482Korea

Background: Efficient ampullary intervention is essential for endoscopic retrograde cholangiopancreatography(ERCP) in patients with a prior Billroth II gastrectomy. We retrospectively evaluated the safety and effectiveness of ampullary intervention using fully covered self-expandable metal stents(FCSEMSs) for the management of common bile duct(CBD) stones in a subset of patients with a history of Billroth II gastrectomy. Methods: This retrospective analysis involved patients with a prior Billroth II gastrectomy who underwent ampullary intervention with FCSEMSs for the management of CBD stones. The factors associated with FCSEMSs placement, treatment success, and procedural complications were analyzed. Results: A group of 15 patients(10 males; median age, 78 years) underwent biliary metal stent placement for high degree of CBD angulation(6), small or flat papilla with unclear margin(5), current use of double antiplatelet agents or an anticoagulant(2), unwanted instrumentation of the cystic duct(1), and insecure position of the scope(1). Ampullary intervention with FCSEMSs was successful in all patients. After dilating the ampulla of Vater and building a durable conduit with FCSEMSs immediately, CBD stones were removed successfully from all patients in a single session. A mild post-ERCP pancreatitis occurred in one patient, who recovered without complications. Conclusion: Ampullary intervention with FCSEMSs is safe and effective for the management of CBD stones in a subset of patients with a history of Billroth II gastrectomy.

关键词： Common bile duct stone Endoscopic retrograde cholangiopancreatography Stent placement Stone extraction

Long-term effects of various types of 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors on changes in glomerular filtration rate in Korea

在线全文

学校读者我要写书评

暂无评论

Frontiers of Medicine 2019年第6期13卷 713-722页

作者： Seo Yeon baik Hyunah Kim So Jung Yang Tong Min Kim Seung-hwan Lee Jae Hyoung cho Hyunyong Lee Hyeon Woo Yim Kun-Ho Yoon Hun-Sung Kim Department of Medical Informatics College of MedicineThe Catholic University of KoreaSeoul 06591Republic of Korea College of Pharmacy Sookmyung Women’s UniversitySeoul 04310Republic of Korea Division of Endocrinology and Metabolism Department of Internal MedicineSeoul St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 06591Republic of Korea Clinical Research Coordinating Center Catholic Medical CenterThe Catholic University of KoreaSeoul 06591Republic of Korea Department of Preventive Medicine College of MedicineThe Catholic University of KoreaSeoul 06591Republic of Korea

Few long-term follow-up studies have compared the changes in renal function according to the type of statin used in *** compared the long-term effects of statin intensity and type on the changes in the glomerular filtration rate(GFR).We extracted data of patients who took statin for the first *** analyzed whether or not different statins affect the changes in GFR at 3 months after baseline and 4 years *** included 3678 patients and analyzed the changes in *** GFR decreased by 3.2%±0.4%on average 4 years after the first statin prescription,indicating statistically significant deterioration(from 83.5±0.4 mL/min/1.73 m2 to 79.9±0.4 mL/min/1.73 m2,P<0.001).When comparing the GFR among different statins,significant differences were observed between atorvastatin and fluvastatin(−5.3%±0.7%vs.1.2%±2.2%,P<0.05)and between atorvastatin and simvastatin(−5.3%±0.7%vs.−0.7%±0.8%,P<0.05).In pitavastatin(odds ratio[OR]=0.64,95%confidence interval[CI]=0.46-0.87,P<0.005)and simvastatin(OR=0.69,95%CI=0.53-0.91,P<0.008),the GFR rate that decreased by<60 mL/min/1.73 m2 was significantly lower than that of *** long-term statin intake,GFR changed with the type of *** work is the first in Korea to compare each statin in terms of changes in the GFR after the statin prescription.

关键词： statin glomerular filtration rate HMG-CoA reductase inhibitor chronic kidney disease