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Grain flow rate sensing for a 55 kW full-feed type multi-purpose combine

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International Journal of Agricultural and Biological Engineering 2018年第5期11卷 206-210页

作者： Moon-Chan Choi Kyu-Ho Lee Bo-Eun Jang Yong-Joo Kim Sun-ok Chung Jong-Soon Lee Su-Kyeong Kim Department of Biosystems Machinery Engineering Chungnam National UniversityDaejeon34134Korea R&D Center Daedong Industrial Co.LtdChangyeongKorea R&D Center TongYang Co.LtdGongjuKorea

Real time sensing of crop yield is critical for a successful implementation of precision *** monitoring system is an optional component of a 55 kW multi-purpose combine harvester,developed in Korea,for both domestic and global markets,especially Asian countries where field sizes are relatively *** aim of the present study was to fabricate and evaluate the performance of a grain flow sensor suitable to the mid-sized full-feed type combine for rice,soybean,and ***,commercially available non-contact type sensing modules(optical,ultrasonic,laser,and microwave modules)were chosen for alternative candidates,to be further tested in a laboratory *** the laboratory tests,the ultrasonic module was selected as a potential approach and the performance was improved by increasing the number of modules and their ***,the improved grain flow sensor was evaluated during field harvesting *** tests with the improved grain flow sensor showed a good potential for rice(R^(2)=0.85,RMSE=126.14 g/s),soybean(R^(2)=0.78,RMSE=43.87 g/s),and barley(R^(2)=0.83,RMSE=37.39 g/s).Further research would be necessary for improvement and commercialization,through various signal processing and field tests under different field and crop conditions.

关键词： precision agriculture combine harvester yield monitoring system sensor grain flow rate

Reactive oxygen species involved in sulforaphane-induced STAT3 inactivation and apoptosis in DU145 prostate cancer cells

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Chinese Science Bulletin 2010年第34期55卷 3922-3928页

作者： KOH Wonil AHN Kwang Seok JEONG Soo-Jin LEE Hyo-Jung KIM Minseok LEE Hyo-Jeong LEE Eun-ok KIM Sung-Hoon College of Oriental Medicine Kyung Hee University College of Dental Medicine Tufts UniversityBoston

Signal transducer and activator of transcription factor 3(STAT3)is a transcription factor that regulates various cellular processes such as proliferation,survival and angiogenesis in cancer *** the present study,we investigated the mechanisms whereby isothiocyanate sulforaphane(SFN)suppresses STAT3 activation in DU145 prostate cancer *** significantly inhibited SFN-inhibited STAT3 phosphorylation at Tyr705 as well as the deoxyribonucleic acid(DNA)binding capability in electrophoresis mobility shift assay(EMSA)in time-and concentration-dependent *** also abrogated the Janus activated kinase 2(JAK2)*** addition,SFN down-regulated STAT3-related gene products including Bcl-2,Bcl-xL,and cyclin D1 and vascular endothelial growth factor(VEGF),and inhibited the proliferation and induced ***,SFN mediated reactive oxygen species(ROS)production at the early ***,these results demonstrate that ROS generation may be involved in the inhibition of JAK2/STAT3 activation and apoptosis in DU145 cells.

关键词：前列腺癌细胞 STAT3 细胞凋亡活性氧活化诱导硫素萝卜

Ethanol extract of Kalopanax septemlobus leaf inhibits HepG2 human hepatocellular carcinoma cell proliferation via inducing cell cycle arrest at G_1 phase

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Asian Pacific Journal of Tropical Medicine 2016年第4期9卷 336-342页

作者： Cheol Park Ji-Suk Jeong Jin-Woo Jeong Sung ok Kim Yong-Joo Kim Gi-Young Kim Su-Hyun Hong Yung Hyun Choi Department of Molecular Biology College of Natural Sciences and Human EcologyDongeui University Department of Research and Development of Resources Gurye-gun Agricultural Center Wild Flower Institute.Gurye-gun Anti-Aging Research Center.Dongeui University Department of Food Science & Biotechnology College of EngineeringKyungsung University Republic of Korea Laboratory of Immunobiology.Department of Marine Life.Sciences.Jeju National University Department of Biochemistry.Dongeui University

Objective:To investigate the effects of an ethanol extract of Kalopanax septemlobus(Thunb.)***(EEKS) on cell proliferation in human hepatocellular carcinoma cells and its mechanisms of ***:Cells were treated with EEKS and subsequently analyzed for cell proliferation and flow cytometry *** of cell cycle regulators were determined by reverse transcriptase polymerase chain reaction analysis and Western blotting,and activation of eyclin-associaled kinases studied using kinase ***:The EEKS suppressed cell proliferation in both HepG2 and Hep3 B cells,but showed a more sensitive anli-proliferative activity in HepG2 *** cytometry analysis revealed an association between the growth inhibitory effect of EEKS and with G_1 phase cell cycle arrest in HepG2 cells,along with the dephosphorylation of retinoblastoma protein(pRB) and enhanced binding of pRB with the E2 F transcription factor family *** with EEKS also increased the expression of cyclin-dependent kinase(CDK) inhibitors,such as p21WAF1/CIP1 and *** any noticeable changes in G_1 cyclins and CDKs(except for a slight decrease in CDK4).Treatment of HepG2 cells with EEKS also increased the binding of p21 and p27 with CDK4 and *** was paralleled by a marked decrease in the cyclin D- and cyclin E-associated kinase ***:Overall,our findings suggest that EEKS may be an effective treatment for liver cancer through suppression of cancer cell proliferation via G_1,cell cycle arrest Further studies arc required to identify the active compounds in EEKS.

关键词： Kalopanax septemlobus Hepatocellular carcinoma G1 cell cycle arrest CDK inhibitor pRB

Improving hydroxyapatite coating ability on biodegradable metal through laser-induced hydrothermal coating in liquid precursor:Application in orthopedic implants

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Bioactive Materials 2023年第7期25卷 796-806页

作者： Jaeho Park Seung-Hoon Um Youngmin Seo Jaehong Lee Yu-Chan Kim Myoung-Ryul ok Suk-Won Hwang Jeong-Yun Sun Hyung-Seop Han Hojeong Jeon Biomaterials Research Center Biomedical Research DivisionKorea Institute of Science and Technology(KIST)Seoul02792South Korea Department of Materials Science and Engineering Seoul National University(SNU)Seoul08826South Korea Division of Biomedical Science and Technology KIST SchoolKorea University of Science and TechnologySeoul02792South Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoul02841South Korea

During the past decade,there has been extensive research toward the possibility of exploring magnesium and its alloys as biocompatible and biodegradable materials for implantable *** practical medical application,however,has been limited to specific areas owing to rapid corrosion in the initial stage and the consequent *** coatings can significantly reduce the initial corrosion of Mg alloys,and several studies have been carried out to improve the adhesion strength of the coating to the surfaces of the *** composition of hydroxyapatite(HAp)is very similar to that of bone tissue;it is one of the most commonly used coating materials for bone-related implants owing to favorable osseointegration *** this study,HAp was coated on Mg using nanosecond laser coating,combining the advantages of chemical and physical *** heat generated in the liquid precursor by the laser improved the adhesion of the coating through the precipitation and growth of HAp at the localized nanosecond laser focal area and increased the corrosion resistance and cell adhesion of *** physical,crystallographic,and chemical bondings were analyzed to explore the mechanism through which the surface adhesion between Mg and the HAp coating layer *** applicability of the coating to Mg screws used for clinical devices and improvement in its corrosion property were *** liquid environment-based laser surface coating technique offers a simple and quick process that does not require any chemical ligands,and therefore,overcomes a potential obstacle in its clinical use.

关键词： Biodegradable metal HAp coating Nanosecond laser Photothermal synthesis Soret effect(thermophoresis)

Hepatic angiosarcoma manifested as recurrent hemoperitoneum

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World Journal of Gastroenterology 2008年第18期14卷 2935-2938页

作者： Seung-Woo Lee Chun-Young Song Young-Hwa Gi Sang-Beom Kang Yon-Soo Kim Soon-Woo Nam Dong-Soo Lee Jong-ok Kim Division of Gasroenterology and Hepatology Departments of Internal Medicine The Catholic University of Korea College of Medicine Seoul 301-723 Korea Department of pathology The Catholic University of Korea College of Medicine Seoul 301-723 Korea

Angiosarcoma is a rare tumor that account for less than 1% of all sarcomas. Although hepatic angiosarcoma usually presents with unspecific symptoms, it rapidly progresses and has a high mortality. We report a rare cas... 详细信息

关键词： Angiosarcoma Hemoperitoneum Primary hepatic tumor

Low-intensity treadmill exercise and/or bright light promote neurogenesis in adult rat brain

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Neural Regeneration Research 2013年第10期8卷 922-929页

作者： Sung Jin Kwon Jeongsook Park So Yun Park Kwang Seop Song Sun Tae Jung So Bong Jung Ik Ryeul Park Wan Sung Choi Sun ok Kwon Department of Physical Education Gyeongsang National University Department of Anatomy and Neurobiology Medical Research Center for Neural DysfunctionInstitute of Health ScienceSchool of MedicineGyeongsang National University Department of Liberal Arts Gyeongnam National University of Science and Technology

The hippocampus is a brain region responsible for learning and memory functions. The purpose of this study was to investigate the effects of low-intensity exercise and bright light exposure on neurogenesis and brain-derived neurotrophic factor expression in adult rat hippocampus. Male Sprague-Dawley rats were randomly assigned to control, exercise, light, or exercise ＋ light groups （n = 9 per group）. The rats in the exercise group were subjected to treadmill exercise （5 days per week, 30 minutes per day, over a 4-week period）, the light group rats were irradiated （5 days per week, 30 minutes per day, 10 000 Ix, over a 4-week period）, the exercise ＋ light group rats were subjected to treadmill exercise in combination with bright light exposure, and the control group rats remained sedentary over a 4-week period. Compared with the control group, there was a significant increase in neurogenesis in the hippocampal dentate gyrus of rats in the exercise, light, and exercise ＋ light groups. Moreover, the expression level of brain-derived neurotrophic factor in the rat hippocampal dentate gyrus was significantly higher in the exercise group and light group than that in the control group. Interestingly, there was no significant difference in brain-derived neurotrophic factor expression between the control group and exercise ＋ light group. These results indicate that low-intensity treadmill exercise （first 5 minutes at a speed of 2 m/min, second 5 minutes at a speed of 5 m/min, and the last 20 minutes at a speed of 8 m/min） or bright-light exposure therapy induces positive biochemical changes in the brain. In view of these findings, we propose that moderate exercise or exposure to sunlight during childhood can be beneficial for neural development.

关键词： neural regeneration neurogenesis neurorehabilitation exercise bright light brain-derivedneurotrophic factor hippocampus childhood grants-supported paper neuroregeneration

使用三维方法设计石油化工厂节省30%管道系统设计时间

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低碳化学与化工 1996年第2期 60-62页

作者： Sung-JinKim,ok-KiLee 好运工程公司!韩国汉城管道系统部经理好运工程公司!韩国汉城公司CAE部副经理

作为一家通用工程公司一好运公司建立于1978年,公司主要提供可行性研究、项目管理、工程设计、采购、检查、建筑和起动等项目的广泛技术服务.自成立以来,好运公司一直享有完

关键词：石油化工厂三维方法管道系统软件系统

High-throughput computational-experimental screening protocol for the discovery of bimetallic catalysts

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npj Computational Materials 2021年第1期7卷 1232-1241页

作者： Byung Chul Yeo Hyunji Nam Hyobin Nam Min-Cheol Kim Hong Woo Lee Sung-Chul Kim Sung ok Won Donghun Kim Kwan-Young Lee Seung Yong Lee Sang Soo Han Computational Science Research Center Korea Institute of Science and TechnologySeoulRepublic of Korea Department of Energy Resources Engineering Pukyong National UniversityBusanRepublic of Korea Materials Architecturing Research Center Korea Institute of Science and TechnologySeoulRepublic of Korea Department of Chemical and Biological Engineering Korea UniversitySeoulRepublic of Korea Department of Nanomaterials Science and Engineering Korea University of Science and TechnologyDaejeonRepublic of Korea Advanced Analysis Center Korea Institute of Science and TechnologySeoulRepublic of Korea

To accelerate the discovery of materials through computations and experiments,a well-established protocol closely bridging these methods is *** introduce a high-throughput screening protocol for the discovery of bimetallic catalysts that replace palladium(Pd),where the similarities in the electronic density of states patterns were employed as a screening *** first-principles calculations,we screened 4350 bimetallic alloy structures and proposed eight candidates expected to have catalytic performance comparable to that of *** experiments demonstrate that four bimetallic catalysts indeed exhibit catalytic properties comparable to those of ***,we discover a bimetallic(Ni-Pt)catalyst that has not yet been reported for H_(2)O_(2) direct *** particular,Ni_(61)Pt_(39) outperforms the prototypical Pd catalyst for the chemical reaction and exhibits a 9.5-fold enhancement in cost-normalized *** protocol provides an opportunity for the catalyst discovery for the replacement or reduction in the use of the platinum-group metals.

关键词： synthesis catalyst bimetallic

Effect of barley straw biochar application on greenhouse gas emissions from upland soil for Chinese cabbage cultivation in short-term laboratory experiments

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Journal of Mountain Science 2016年第4期13卷 693-702页

作者： Se-Won KANG Dong-Cheol SEO Yong-Hwa CHEONG Ju-Wang PARK Jong-Hwan PARK Hang-Won KANG Ki-Do PARK Yong Sik ok Ju-Sik CHO Department of Medicinal & Industrial Crops Korea National College of Agriculture and Fisheries Division of Applied Life Science (BK21 Program) & Institute of Agriculture and Life Sciences Gyeongsang National University Department of Bio-environmental Sciences Sunchon National University National Institute of Crop Science Rural Development Association Korea Biochar Research Center & Department of Biological Environment Kangwon National University

Chinese cabbage was cultivated in upland soil with the addition of biochar in order to investigate the potential for reduction of greenhouse gas emissions. Barley straw biochar(BSB) was introduced in a Wagner pot(1/5000a) in amounts of 0(BSB0, control), 100(BSB100), 300(BSB300), and 500(BSB500) kg 10a^(-1). After the addition of BSB into the upland soil, carbon dioxide(CO_2) emission increased while methane(CH_4) and nitrous oxide(N_2O) emissions decreased. The highest CO2 flux was measured for the BSB500 sample,(84.6 g m^(-2)) followed by BSB300, BSB100, and BSB0 in decreasing order. Relative to those of control, the total CH_4 flux and N_2O flux for the BSB500 treatment were lower by 31.6% and 26.1%, respectively. The global warming potential(GWP) of the treatment without biochar was 281.4 g CO_2 m-2 and those for treatments with biochar were in the range from 194.1 to 224.9 g CO_2 m^(-2). Therefore, introducing BSB into upland soil to cultivate Chinese cabbages can reduce the global warming potential.

关键词： Biochar Carbon dioxide Methane Nitrous oxide Global warming