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Improved photocatalytic activity of surface charge functionalized ZnO nanoparticles using aniline

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Journal of Materials Science & Technology 2021年第17期76卷 1-10页

作者： Chatchai Rodwihok Korakot Charoensri Duangmanee Wongratanaphisan Won Mook Choi Seung Hyun Hur Hyun jin Park jin suk chung School of Chemical Engineering University of Ulsan680-749.South ICorea Department of Biotechnology College of Life Sciences andBiotechnologyKorea University145 Anam-roSeongbuk-guSeoul02841South Korea Research Center in Physics andAstronomy Faculty of ScienceChiang Mai UniversityChiang Mai50200Thailand

Functionalization of aniline molecules on zinc oxide(ZnO)nanoparticles is reported using a simple impregnation *** ZnO samples were systematically characterized based on morphology,surface and optical properties,and photocatalytic performance towards methyl orange(MO).Aniline functionalization increased the surface charge of the modified *** to pristine ZnO,the aniline-functionalized ZnO yielded faster photodegradation of MO,degrading 98.29%of MO in 60 min and superoxide radicals were the major species during the MO photodegradation *** results indicate that the improvement of photocatalytic degradation could be attributed to opposite charge-induced surface ***,protonated amine as a positively charged molecule was expected to increase the surface adsorption of MO(as an anionic dye)on ZnO nanoparticles surfaces,thereby increasing their photocatalytic degradation performance.

关键词： Photocatalysts Surface charge ZnO Aniline Methyl orange

Diverse Functions of VDUP1 in Cell Proliferation,Differentiation,and Diseases

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Cellular & Molecular Immunology 2007年第5期4卷 345-351页

作者： Sang Yong Kim Hyun-Woo Suh jin Woong chung suk-Ran Yoon Inpyo Choi Stem Cell Research Center Korea Research Institute of Bioscience and BiotechnologyYusongTaejon 305-333Republic of Korea

Vitamin D3 up-regulated protein 1 （VDUP1） is a multifunctional protein involved in maintaining cellular homeostasis. VDUP1 is induced by a variety of stresses. Inversely, VDUP1 is often reduced in various tumor tissues and cell lines. Over-expression of VDUP1 inhibits cell proliferation through cell cycle arrest. VDUP1 interacts with thioredoxin （Trx） and negatively regulates the expression and antioxidant function of Trx which is involved in redox regulation. VDUP1/ mice are more susceptible to carcinogenesis than wild-type mice and are defective in establishing immune system induding the development and function of natural killer cells. Furthermore, VDUP1^-/- mice show impaired Kreb cycle-mediated fatty acid utilization. In this review, we have discussed the multifunctional roles of VDUP1 in diverse cellular responses, in particular its relation to proliferation, apoptosis, differentiation, and diseases such as cancer and stress-related diseases.

关键词： VDUP1 thioredoxin proliferation immune cell

Gallstone spillage caused by spontaneously perforated hemorrhagic cholecystitis

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World Journal of Gastroenterology 2007年第41期13卷 5525-5526页

作者： Young Chul Kim Mi-suk Park Yong Eun chung Joon suk Lim Myeong-jin Kim Ki Whang Kim Department of Diagnostic Radiology and Institute of Gastroenterology Severance HospitalResearch Institute of Radiological ScienceYonsei University College of MedicineSeoulSouth Korea

There are occasional incidences of gallstone spillage during laparoscopic cholecystectomy,and there have been frequent reports on such a topic in the literature. To the best of our knowledge,however,there have been no reports about spilled stones caused by spontaneously perforated hemorrhagic cholecystitis. Here,we report the radiologic findings of spilled stones caused by spontaneously perforated hemorrhagic cholecystitis in a 55-year-old man.

关键词： Gallbladder perforation Gallstone spillage, Hemorrhagic cholecystitis

Comparison of CT and MRI for presurgical characterization of paraaortic lymph nodes in patients with pancreatico-biliary carcinoma

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World Journal of Gastroenterology 2008年第14期14卷 2208-2212页

作者： Young Chul Kim Mi-suk Park Seung-Whan Cha Yong Eun chung Joon suk Lim Myeong-jin Kim Ki Whang Kim Kyung Sik Kim Department of Diagnostic Radiology and Institute of Gastroenterology Severance Hospital Research Institute of Radiological Science Yonsei University College of Medicine Seoul 120-752 Korea Department of Diagnostic radiology and Institute of Gastroenterology Yonsei University Wonju College of Medicine Wonju 220-701 Korea Department of General surgery and Institute ofGastroenterology Severance Hospital Yonsei University Collegeof Medicine Seoul 120-752 Korea

AIM:To determine the accuracy of computed tomography (CT) and magnetic resonance (MR) for presurgical characterization of paraaortic lymph nodes in patients with pancreatico-biliary carcinoma. METHODS:Two radiologists independently evaluated CT and MR imaging of 31 patients who had undergone lymphadenectomy (9 metastatic and 22 non-metastatic paraaortic nodes). Receiver operating characteristic (ROC) curve analysis was performed using a five point scale to compare CT with MRI. To re-define the morphologic features of metastatic nodes, we evaluated CT scans from 70 patients with 23 metastatic paraaortic nodes and 47 non-metastatic ones. The short axis diameter, ratio of the short to long axis, shape, and presence of necrosis were compared between metastatic and non-metastatic nodes by independent samples t-test and Fisher's exact test. P 5.3 mm), irregular margin, and presence of central necrosis are the suggestive morphologic features of metastatic paraaortic nodes.

关键词： Paraaortic lymph node Pancreatico-biliary carcinoma Computed tomography Magnetic resonance imaging

Biliary reflux detection in anomalous union of the pancreaticobiliary duct patients

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World Journal of Gastroenterology 2012年第9期18卷 952-959页

作者： suk Keu Yeom Seung Wha Lee Sang Hoon Cha Hwan Hoon chung Bo Kyung Je Baek Hyun Kim Jong jin Hyun Department of Radiology Korea University Ansan Hospital Division of Gastroenterology and Hepatology Department of Internal MedicineKorea University Ansan HospitalGyeonggi-do 425-707South Korea

AIM： To demonstrate the imaging findings of biliopan creatic and pancreatico-biliary reflux in patients with anomalous union of the pancreatico biliary duct （AUPBD） on gadoxetic acidenhanced functional magnetic res... 详细信息

关键词： Bile reflux Choledochal cyst Encoscopicretrograde cholangio-pancreatography Gadolinium-eth-oxybenzyl-diethylenetriamine penta-acetic acid Magneticresonance imaging

A GIS-Based Framework for Real-Time Debris-Flow Hazard Assessment for Expressways in Korea

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International Journal of Disaster Risk Science 2016年第3期7卷 293-311页

作者： Han-Saem Kim Choong-Ki chung Sang-Rae Kim Kyung-suk Kim Earthquake Research Center Korea Institute of Geoscience and Mineral Resources Department of Civil and Environmental Engineering Seoul National University Department of Civil and Environmental Engineering Northwestern University Expressway and Transportation Research Institute Korea Expressway Corporation

Debris flows caused by heavy rainfall in mountain areas near expressways lead to severe social and economic losses and sometimes result in ***, the development of a real-time system for debris-flow hazard assessment is necessary to provide preliminary information for rapid decision making about evacuations or restoration measures, as well as to prevent secondary disasters caused by debris flows. Recently,various map-based approaches have been proposed using multi-attribute criteria and assessment methods for debrisflow susceptibilities. For the macrozonation of debris-flow hazard at a national scale, a simplified method such as the Korea Expressway Corporation(KEC) debris-flow hazard assessment method can be applied for systematic analysis based on geographic information systems(GIS) and monitoring networks. In this study, a GIS-based framework of real-time debris-flow hazard assessment for expressway sections is proposed based on the KEC debris-flow hazard assessment method. First, the KEC-based method was standardized in a systematic fashion using Arc GIS,enabling the objective and quantitative acquisition of various attribute datasets. The quantification of rainfall criteria also was considered. A safety management system for debris-flow hazard was developed based on the GIS platform. Finally, the method was applied and verified on three expressway sections in Korea. The grading standard for each individual influencing attribute was subsequently modified to more accurately assess the debris-flow hazards.

关键词： Debris-flow hazard Expressway management GIS Korea Real-time hazard assessment

Formation of FeMo_2B_2 phase in boron containing 9Cr-1.5Mo ferritic steels

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Rare Metals 2006年第Z2期25卷 213-219页

作者： JUNG Woo-Sang HONG suk-Woo SONG Sang-Min SOOK-In Kwun chung Soon-Hyo Materials Science & Technology Division Korea Institute of Science & Technology Seoul 136-791 Korea Department of Materials Science and Engineering Korea University Seoul 136-713 Korea

The segregation and diffusion of boron during heat treatments were studied. The influence of boron contents, aging time and applied stress on FeMo2B2 formation was also studied. Finally, the effects of boron contents and FeMo2B2 formation on the high temperature strength were studied. Boron atoms were segregated to prior austenite grain boundary during normalizing treatment. And these boron atoms were slowly diffused into the grain interior during tempering and aging at 700 ℃. The FeMo2B2 phase was only formed after 1,000 h aging at 700 ℃ in alloy containing 196 ppm boron. The formation of FeMo2B2 phase is accelerated by the applied stress. It was expected that the formation of FeMo2B2 is closely related to the redistribution of boron atoms. The tensile strengths at 700 ℃ are increased with the increase of boron contents. However, the formation of FeMo2B2 phase results in lower tensile strength.

关键词： 9Cr-1.5Mo ferritic steels precipitation behavior boron effect FeMo2B2 phase tensile strength

Integrating artificial intelligence and high-throughput phenotyping for crop improvement

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Journal of Integrative Agriculture 2024年第6期23卷 1787-1802页

作者： Mansoor Sheikh Farooq Iqra Hamadani Ambreen Kumar A Pravin Manzoor Ikra Yong suk chung Phenomics Laboratory Department of Plant Resources and EnvironmentJeju National UniversityJeju 63234Republic of Korea Council of Scientific&Industrial Research Indian Institute of Integrative MedicinePulwamaJ&K 192301India Animal and Dairy Science University of WisconsinMadisonWI 530706United States of America Division of Fruit Science Faculty of HorticultureSher-e-Kashmir University of Agricultural Sciences and Technology of KashmirSrinagar 190025India

Crop improvement is crucial for addressing the global challenges of food security and sustainable *** advancements in high-throughput phenotyping(HTP)technologies and artificial intelligence(AI)have revolutionized the field,enabling rapid and accurate assessment of crop traits on a large *** integration of AI and machine learning algorithms with HTP data has unlocked new opportunities for crop *** algorithms can analyze and interpret large datasets,and extract meaningful patterns and correlations between phenotypic traits and genetic *** technologies have the potential to revolutionize plant breeding programs by providing breeders with efficient and accurate tools for trait selection,thereby reducing the time and cost required for variety ***,further research and collaboration are needed to overcome the existing challenges and fully unlock the power of HTP and AI in crop *** leveraging AI algorithms,researchers can efficiently analyze phenotypic data,uncover complex patterns,and establish predictive models that enable precise trait selection and crop *** aim of this review is to explore the transformative potential of integrating HTP and AI in crop *** review will encompass an in-depth analysis of recent advances and applications,highlighting the numerous benefits and challenges associated with HTP and AI.

关键词： artificial intelligence crop improvement data analysis high-throughput phenotyping machine learning precision agriculture trait selection

SPAD Value Difference between Blueberry Cultivar ‘STAR’ by Planted Ground and Pot

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Phyton-International Journal of Experimental Botany 2022年第11期91卷 2583-2590页

作者： Gyung Deok Han Dae Ho Jung Seong Heo Yong suk chung Department of Plant Resource and Environment Jeju National UniversityJeju63234Korea Division of Smart Horticulture Yonam CollegeCheonan31005Korea Department of Horticulture Kongju National UniversityYesan32439Korea

In the smart farm,we can control every detail for *** every factor that affects the crop’s final yield is necessary to optimize its *** SPAD values were observed in the‘Star’cultivar blueberry(Vaccinium darrowii)three times a day and at three different plant *** pattern of SPAD value change was different by the planting *** planted blueberry(***)represented a stable SPAD value during the day and at the different ***,the SPAD value was increased by time in pot-planted blueberry(***).Also,the SPAD value of pot-planted blueberry was lower than ground planted blueberry(***).Even when plants were of the same cultivar and age,planting conditions affected the changing pattern of SPAD in a *** planting condition had ***,proper management is needed to compensate SPAD value in pot-planted blueberry(***).This study suggests that environmental conditions like planting factors affect the final ***,to maximize the efficiency at the smart farm,the factors that could affect the final yield should be investigated and accumulated.

关键词： Cultivation chlorophyll fruit greenhouse light smart farm