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Journal of Iron and Steel Research International 2020年第5期27卷 608-616页

作者： jin-long Lu Guo-guang Cheng Meng Wu Guo Yang ju-long Che State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Research and Development Department Xining Special Steel Co.Ltd.Xining 810005QinghaiChina

An unqualifed six-cylinder heavy truck crankshaft has been studied to investigate the cause of magnetic particle testing defects on the rod ***-sized long-striped MnS inclusions are regarded as the major cause for the magnetic particle testing failure because they have been detected in situ under the magnetic particle *** the observation of macroscopic structures of the rod journals and corresponding counterweight blocks,it is found that for the 1#and 3#rod journals,the center metal of the original hot-rolled bar has been extruded to the inboard edge of the rod journals and large-sized long-striped MnS inclusions are exposed on the surface after fash removal,leading to the failure of magnetic particle *** for the 2#rod journal,the center metal of the original bar has not been extruded to the surface and MnS inclusions on the rod journal surface are small in size,few in number,resulting in passing the magnetic particle *** the quality of the hot-rolled bars fuctuates,it is more recommended to apply magnetic particle testing on samples at the center of bars before forging to evaluate the severity of defects caused by the long-striped MnS inclusions for fear of the scrap of the fnal crankshafts.

关键词： Crankshaft Magnetic particle testing MnS inclusion Microalloyed medium-carbon forging steel Defect

Reliability and validity of tongue color analysis in the prediction of symptom patterns in terms of East Asian Medicine

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Journal of Traditional Chinese Medicine 2016年第2期36卷 165-172页

作者： Young-Jae park jin-Moo Lee Seung-Yeon Yoo Young-Bae park Department of Diagnosis and Biofunctional Medicine College of Korean MedicineKyung Hee UniversitySeoul 134-727Korea Department of Diagnosis and Biofunctional Medicine Kyung Hee University Hospital at GangdongSeoul 134-727Korea Department of Oriental Gynecology College of Korean MedicineKyung Hee UniversitySeoul 134-727Korea Department of Women Health Clinic Kyung Hee University Hospital at GancldonaSeoul 134-727Knrpa

OBJECTIVE:To examine whether color parameters of tongue inspection(TI)using a digital camera was reliable and valid,and to examine which color parameters serve as predictors of symptom patterns in terms of East Asian medicine(EAM).METHODS:Two hundred female subjects'tongue substances were photographed by a mega-pixel digital *** with the photographs,the subjects were asked to complete Yin deficiency,Phlegm pattern,and Cold-Heat pattern *** three sets of digital imaging software,each digital image was exposure-and white balance-corrected,and finally L*(luminance),a*(red-green balance),and b*(yellow-blue balance)values of the tongues *** examine intra-and inter-rater reliabilities and criterion validity of the color analysis method,three raters were asked to calculate color parameters for 20 digital image ***,four hierarchical regression models were ***:Color parameters showed good or excellent reliability(0.627-0.887 for intra-class correlation coefficients)and significant criterion validity(0.523-0.718 for Spearman's correlation).In the hierarchical regression models,age was a significant predictor of Yin deficiency(β=0.192),and b*value of the tip of the tongue was a determinant predictor of Yin deficiency,Phlegm,and Heat patterns(β=-0.212,-0.172,and-0.163).Luminance(L*)was predictive of Yin deficiency(β=-0.172)and Cold(β=0.173)***:Our results suggest that color analysis of the tongue using the L*a*b*system is reliable and valid,and that color parameters partially serve as symptom pattern predictors in EAM practice.

关键词： Medicine East Asian Traditional Complementary therapies Tongue inspection Yin deficiency Symptom pattern

Sphingosine-1-phosphate hinders the osteogenic differentiation of dental pulp stem cells in association with AKT signaling pathways

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International Journal of Oral Science 2022年第2期14卷 192-200页

作者： Bongkun Choi Ji-Eun Kim Si-On park Eun-Young Kim Soyoon Oh Hyuksu Choi Dohee Yoon Hyo-jin Min Hyung-Ryong Kim Eun-ju Chang Department of Biomedical Sciences Asan Medical CenterUniversity of Ulsan College of MedicineSeoulKorea Stem Cell Immunomodulation Research Center Asan Medical CenterUniversity of Ulsan College of MedicineSeoulKorea Department of Pharmacology College of DentistryJeonbuk National UniversityJeonjuKorea Department of Biochemistry and Molecular Biology Asan Medical CenterUniversity of Ulsan College of MedicineSeoulKorea

Sphingosine-1-phosphate(S1P)is an important lipid mediator that regulates a diverse range of intracellular cell signaling pathways that are relevant to tissue engineering and regenerative ***,the precise function of S1P in dental pulp stem cells(DPSCs)and its osteogenic differentiation remains *** here investigated the function of S1P/S1P receptor(S1PR)-mediated cellular signaling in the osteogenic differentiation of DPSCs and clarified the fundamental signaling *** results showed that S1P-treated DPSCs exhibited a low rate of differentiation toward the osteogenic phenotype in association with a marked reduction in osteogenesis-related gene expression and AKT *** note,both S1PR1/S1PR3 and S1PR2 agonists significantly downregulated the expression of osteogenic genes and suppressed AKT activation,resulting in an attenuated osteogenic capacity of *** importantly,an AKT activator completely abrogated the S1P-mediated downregulation of osteoblastic markers and partially prevented S1P-mediated attenuation effects during ***,the pro-inflammatory TNF-αcytokine promoted the infiltration of macrophages toward DPSCs and induced S1P production in both DPSCs and *** findings indicate that the elevation of S1P under inflammatory conditions suppresses the osteogenic capacity of the DPSCs responsible for regenerative endodontics.

关键词： pulp hinder precise

Scratch formation and its mechanism in chemical mechanical planarization (CMP)

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Friction 2013年第4期1卷 279-305页

作者： Tae-Young KWON Manivannan RAMACHANDRAN jin-Goo park Department of Materials Engineering Hanyang UniversityAnsan 426-791Korea

Chemical mechanical planarization(CMP)has become one of the most critical processes in semiconductor device fabrication to achieve global *** achieve an efficient global planarization for device node dimensions of less than 32 nm,a comprehensive understanding of the physical,chemical,and tribo-mechanical/chemical action at the interface between the pad and wafer in the presence of a slurry medium is *** the CMP process,some issues such as film delamination,scratching,dishing,erosion,and corrosion can generate defects which can adversely affect the yield and *** this article,an overview of material removal mechanism of CMP process,investigation of the scratch formation behavior based on polishing process conditions and consumables,scratch formation mechanism and the scratch inspection tools were extensively *** advantages of adopting the filtration unit and the jet spraying of water to reduce the scratch formation have been *** current research trends in the scratch formation,based on modeling perspective were also discussed.

关键词： Chemical mechanical planarization(CMP) defects,scratch post-CMP cleaning defect source

Fruit quality,anthocyanin and total phenolic contents,and antioxidant activities of 45 blueberry cultivars grown in Suwon,Korea

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第9期14卷 793-799页

作者： jin Gook KIM Hong Lim KIM Su jin KIM Kyo-Sun park Department of Horticulture College of Agriculture and Life SciencesGyeongsang National University Institute of Agriculture and Life Sciences Gyeongsang National University Namhae Sub-Station National Institute of Horticultural and Herbal Science Fruit Research Division National Institute of Horticultural and Herbal Science

Blueberry fruits from 45 commercial cultivars (39 northern highbush and 6 half highbush blueberry) grown in Suwon,Korea were analyzed for fruit size,soluble solids content,titratable acidity,total anthocyanin content,total phenolic content,and antioxidant *** characteristics varied widely among the 45 blueberry *** weight ranged from 0.9 to 3.6 g,soluble solids content from 8.3 to 14.3 °Brix,and titratable acidity from 0.8% to 3.6%.Antioxidant activity ranged from 0.7 to 2.1 mg of quercetin equivalents per gram of fresh berries in different blueberry *** the 45 blueberry cultivars,high amounts of anthocyanins and polyphenols,and high antioxidant activity were observed in 'Elliott','Rubel','Rancocas',and 'Friendship'.

关键词： Northern highbush blueberry Half highbush blueberry Functional food Fruit quality

Mobilization of monocytic myeloid-derived suppressor cells is regulated by PTH1R activation in bone marrow stromal cells

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Bone Research 2023年第2期11卷 354-367页

作者： Eun jung Lee Kyoung jin Lee Seungpil jung Kyong Hwa park Serk In park Department of Biochemistry and Molecular Biology Korea University College of MedicineSeoulRepublic of Korea The BK21 Graduate Program Department of Biomedical SciencesKorea University College of MedicineSeoulRepublic of Korea Division of Breast and Endocrine Surgery Department of SurgeryKorea University Anam HospitalSeoulRepublic of Korea Division of Oncology and Hematology Department of Internal MedicineKorea University Anam HospitalSeoulRepublic of Korea Vanderbilt Center for Bone Biology Vanderbilt University School of MedicineNashvilleTNUSA

Myeloid-derived suppressor cells(MDSCs)are bone marrow(BM)-derived immunosuppressive cells in the tumor microenvironment,but the mechanism of MDSC mobilization from the BM remains *** investigated how BM stromal cell activation by PTH1R contributes to MDSC ***1R activation by parathyroid hormone(PTH)or PTH-related peptide(PTHrP),a tumor-derived counterpart,mobilized monocytic(M-)MDSCs from murine BM without increasing immunosuppressive *** vitro cell-binding assays demonstrated thatα4β1 integrin and vascular cell adhesion molecule(VCAM)-1,expressed on M-MDSCs and osteoblasts,respectively,are key to M-MDSC binding to *** PTH1R activation,osteoblasts express VEGF-A and IL6,leading to Src family kinase phosphorylation in *** inhibitors suppressed PTHrP-induced MDSC mobilization,and Src activation in M-MDSCs upregulated two proteases,ADAM-17 and MMP7,leading to VCAM1 shedding and subsequent disruption of M-MDSC tethering to ***,our data provide the molecular mechanism of M-MDSC mobilization in the bones of tumor hosts.

关键词： MMP7 suppressor regulated

Comparison of Antioxidant Activities in Black Soybean Preparations Fermented with Various Microorganisms

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Agricultural Sciences in China 2010年第7期9卷 1065-1071页

作者： QIN Yao jin Xiao-nan park Heui Dong Department of Food Science and Technology Kyungpook National University Daegu 702-701 Korea Applied Plant Stress Biology Lab/Divison of Biotechnology/College of Life Sciences and Biotechnology Korea University Seoul 136-713 Korea

Black soybeans [Glycine max（L.） Merrill] were fermented with various GRAS（generally recognized as safe） microorganisms,including Aspergillus sp.,Bacillus *** yeast（Issatchenkia orientalis） at 30°C for 3 *** antioxidant contents,including total phenolics and total flavonoids,and the antioxidant activities of 1,1-diphenyl-2-picrylhydrazine（DPPH）,ferric reducing antioxidant power（FRAP） and *** were analyzed in preparations of fermented black *** cultures proved to yield significant levels of antioxidants compared with non-fermented cultures（P 〈 0.05）.Fermented black soybean preparations possessed antioxidant activities could be attributed to the total phenolics and flavonoids present.

关键词： antioxidant activity black soybean microorganisms fermentation

Game and Dynamic Communication Path-Based Pricing Strategies for Microgrids Under Communication Interruption

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IEEE/CAA Journal of Automatica Sinica 2023年第4期10卷 1032-1047页

作者： Bo Zhang Chunxia Dou Dong Yue ju H.park Yudi Zhang Zhanqiang Zhang Institute of Advanced Technology Nanjing University of Posts and TelecommunicationsNanjing 210023China Department of Electrical Engineering Yeungnam UniversityGyeongsan 38541South Korea Nanjing University Nanjing 210093China.She is now with the University of BristolBristol BS81QUUK

Nowadays,the microgrid cluster is an important application scenario for energy *** trading,one of the most important research directions is the issue of *** determine reasonable pricing for the microgrid cluster,data communication is used to create the cyber-physical system(CPS),which can improve the observability of ***,the following works are carried out in the *** the physical layer:1)Regarding trading between microgrids and the load,based on the generalized game theory,an optimal pricing strategy is proposed,which takes into account the interactive relationships among microgrids and transforms the pricing problem into a Nikaido-Isoda function to obtain the optimal prices conveniently;2)Regarding peer-to-peer trading between two microgrids,based on evolutionary game theory and the penalty mechanism,the optimal sale price of the seller is selected with boundary *** the cyber layer,regarding the communication interruption issue existing in pricing(i.e.,the game process),based on the principle of matching the performance of the path with the importance degree of the data,a dynamic regulating method of paths is proposed,i.e.,adopting a new path to re-transmit the interrupted data to the ***,the effect of the proposed strategies is verified by case studies.

关键词： Communication interruption dynamic regulating

A Solution to Two Paradoxes of International Capital Flows

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Economic and Political Studies 2014年第1期2卷 3-43页

作者： JIANDONG ju SHANG-jin WEI the Center for International Economic Research (CIER) at Tsinghua University and University of Oklahoma the Columbia Business School Center for Economic Policy Research (CEPR)CIERand National Bureau of Economic Research (NBER)

International capital flows from rich to poor countries can be regarded as either too small(the Lucas paradox in a one-sector model)or too large(when compared with the logic of factor price equalization in a two-sector model).To resolve the paradoxes,we introduce a non-neoclassical model which features financial contracts and firm *** our model,free trade in goods does not imply equal returns to capital across *** addition,rich patterns of gross capital flows emerge as a function of financial and property rights institutions.A poor country with an inefficient financial system may simultaneously experience an outflow of financial capital but an inflow of FDI,resulting in a small net *** comparison,a country with a low capital-to-labor ratio but a high risk of expropriation may experience an outflow of financial capital without a compensating inflow of FDI.

关键词： capital bypass circulation expropriation risk gross capital flow heterogeneous entrepreneurs financial development

Cross-Domain Bilateral Access Control on Blockchain-Cloud Based Data Trading System

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 671-688页

作者： Youngho park Su jin Shin Sang Uk Shin Electronics and Information Communications Research Center Pukyong National UniversityBusan48513Republic of Korea Department of Information Security Graduate SchoolPukyong National UniversityBusan48513Republic of Korea Division of Computer Engineering Pukyong National UniversityBusan48513Republic of Korea

Data trading enables data owners and data requesters to sell and purchase *** the emergence of blockchain technology,research on blockchain-based data trading systems is receiving a lot of ***,to reduce the on-chain storage cost,a novel paradigm of blockchain and cloud fusion has been widely considered as a promising data trading ***,the fact that data can be used for commercial purposes will encourage users and organizations from various fields to participate in the data *** the data marketplace,it is a challenge how to trade the data securely outsourced to the external cloud in a way that restricts access to the data only to authorized users across multiple *** this paper,we propose a cross-domain bilateral access control protocol for blockchain-cloud based data trading *** consider a system model that consists of domain authorities,data senders,data receivers,a blockchain layer,and a cloud *** proposed protocol enables access control and source identification of the outsourced data by leveraging identity-based cryptographic *** the proposed protocol,the outsourced data of the sender is encrypted under the target receiver’s identity,and the cloud provider performs policy-match verification on the authorization tags of the sender and receiver generated by the identity-based signature ***,data trading can be achieved only if the identities of the data sender and receiver simultaneously meet the policies specified by each *** demonstrate efficiency,we evaluate the performance of the proposed protocol and compare it with existing studies.

关键词： Bilateral access control blockchain data sharing policy-match