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Gastric inverted hyperplastic polyp: A rare cause of iron deficiency anemia

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World Journal of Gastroenterology 2016年第15期22卷 4066-4070页

作者： jin Tak Yun Seung Woo Lee Dong Pil k.m Seung Hwa Choi Seok-Hwan k.m Jun kyu Park Sun Hee Jang Yun Jung Park Ye Gyu Sung hae Jung Sul Division of Gastroenterology Department of Internal Medicine College of Medicine Daejeon St. Mary’s Hospital The Catholic University of Korea Department of Pathology College of Medicine Daejeon St. Mary’s Hospital The Catholic University of Korea

Gastric inverted hyperplastic polyp(IHP) is a rare gastric polyp characterized by the downward growth of hyperplastic mucosal components into the submucosal layer. macroscopically, a gastric IHP resembles a subepithelial tumor(SET); as a result, accurately diagnosing gastric IHP is difficult. This issue has clinical significance because gastric IHP can be misdiagnosed as SET or as malignant neoplasm In addition, adenocarcinoma can accompany benign gastric IHP. Although in most cases, gastric IHPs are asymptomatic and are found incidentally, these polyps may cause anemia secondary to chronic bleeding. Here, we report one case involving gastric IHP accompanied by chronic iron deficiency anemia that was successfully managed using endoscopic submucosal dissection.

关键词： Stomach Hyperplasia Polyp Anemia

Improvement in Toughness of Poly(ethylene 2,5-furandicarboxylate) by melt Blending with Bio-based Polyamide11 in the Presence of a Reactive Compatibilizer

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Chinese Journal of Polymer Science 2020年第10期38卷 1099-1106页

作者： Yong Yang An-Ping Tian Ya-jin Fang jing-Gang Wang jin Zhu key Laboratory of Bio-based Polymeric materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences Weihai Honglin Electronic Technology CO. LTD

The objective of this study was to improve the toughness of bio-based brittle poly(ethylene 2,5-furandicarboxylate)(PEF) by melt blending with bio-based polyamide11(PA11) in the presence of a reactive multifunctional epoxy compatibilizer(Joncryl ADR?-4368).The morphological,thermal,rheological,and mechanical properties of PEF/PA1 1 blends were *** with neat PEF,the toughness of PEF/PA11 blend was not improved in the absence of the reactive compatibilizer due to the poor compatibility between the two *** Joncryl was incorporated into PEF/PA1 1 blends,the interfacial tension between PEF and PA1 1 was obviously reduced,reflecting in the fine average particle size and narrow distribution of PA11 dispersed phase as observed by scanning electron microscopy(SEm).The complex viscosities of PEF/PA11 blends with Joncryl were much higher than that of PEF/PA11 blend,which could be ascribed to the formation of graft copolymers through the epoxy groups of Joncryl reacting with the end groups of PEF and PA11 molecular ***,the compatibility and interfacial adhesion between PEF and PA11 were greatly improved in the presence of *** compatibilized PEF/PA11 blend with 1.5 phr Joncryl exhibited significantly improved elongation at break and unnotch impact strength with values of 90.1% and 30.3 kJ/m2,respectively,compared with those of 3.6% and 3.8 kJ/m2for neat PEF,*** work provides an effective approach to improve the toughness of PEF which may expand its widespread application in packaging.

关键词： Poly(ethylene 2,5-furandicarboxylate) Polyamide11 Bio-based polymers Reactive compatibilization Toughening

Application of New Technology of Algal Harvesting System to mitigate Blue-green Algae Bloom in Reservoirs,korea

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Application of New Technology of Algal Harvesting System to ...

Acetylacetone-TiO_(2) Promoted Large Area Compatible Cascade Electron Transport Bilayer for Efficient Perovskite Solar Cells

大坝技术及长效性能国际研讨会

作者： Jae-ki SHIN hae-jin YANG kyung-Taek YUm Senior Research Scientist K-water InstituteKorea President K-water InstituteKorea Vice President K-waterKorea

Water-bloom with blue-green algae is very serious problem that occurs in a eutrophic water body during summer season in korean *** resolve this problem,although various studies have been attempted,most of them were not successful due to the technical limitation.k-water has recently developed the algal harvesting system(AHS) for management of algal bloom zone to prevent the downstream algal propagation and suggested technology background for biomass resources *** was designed and manufactured with total 7 independent *** vessel of AHS is composed of two part,main and sub-body,and five individual components of suction,collection,filtering,gathering,and ultrasonic device.A test result of AHS in Daecheong Reservoir and its tributary in korea was very *** evaluation of the efficiency of AHS was summarized in the aspect of low carbon,recycling,and water quality *** removal rate of the biomass and carbonate at 540 m/day capacity of AHS was 30.78 g chl-a/day,1.54 kg C/day,*** development and application of AHS will lead to provide the base of establishing massive algal incubation plant that allows for producing bio-resources,and will contribute to suggest various technical derivations that support low carbon and green growth.

关键词： Reservoir management Water quality Algal harvesting system Carbon removal

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Energy & Environmental materials 2024年第2期7卷 221-228页

作者： Hyong Joon Lee jin kyoung Park jin Hyuck Heo Sang Hyuk Im Department of Chemical and Biological Engineering Korea University145 Anam-ro Seongbuk-guSeoul 17104Korea

In designing efficient perovskite solar cells(PSCs),the selection of suitable electron transport layers(ETLs)is critical to the final device performance as they determine the driving force for selective charge ***_(2)nanoparticles(NPs)based ETLs have been a popular choice for PSCs due to superior electron mobility,but their relatively deep-lying conduction band energy levels(ECB)result in substantial potential ***,TiO_(2)NPs establish favorable band alignment owing to shallower ECB,but their low intrinsic mobility and abundant surface trap sites impede the final *** this reason,constructing a cascaded bilayer ETL is highly desirable for efficient PSCs,as it can rearrange energy levels and exploit on advantages of an individual *** this study,we prepare SnO_(2)NPs and acetylacetone-modified TiO_(2)(Acac-TiO_(2))NPs and implement them as bilayer SnO_(2)/Acac-TiO_(2)(BST)ETL,to assemble cascaded energy band ***_(2)contributes to rapid charge carrier transport from high electron mobility while Acac-TiO_(2)minimizes band-offset and effectively suppresses interfacial ***,the optimized BST ETL generates synergistic influence and delivers power conversion efficiency(PCE)as high as 23.14%with open-circuit voltage(V_(oc))reaching 1.14 ***,the BST ETL is transferred to a large scale and the corresponding mini module demonstrates peak performance of 18.39%PCE from 25 cm^(2)aperture ***,the BST-based mini module exhibit excellent stability,maintaining 83.1%of its initial efficiency after 1000 h under simultaneous 1 Sun light-soaking and damp heat(85℃/RH 85%)environment.

关键词： acetylacetone large area perovskite solar cells TiO_(2)

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Effect of Zr-deoxidation on microstructure and mechanical behavior of microalloyed heavy plates with low impurity content

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Journal of Iron and Steel Research International 2021年第2期28卷 190-200页

作者： Cheng-yang Hu Hang-yu Dong kai-ming Wu R.D.k.misra Lei Zhong Xing jin Qiang Li Laboratory for Excellence in Advanced Steel Research Materials Science and Engineering ProgramDepartment of MetallurgicalMaterials and Biomedical EngineeringUniversity of Texas at El PasoEl Paso 79968TXUSA The State key Laboratory of Refractories and metallurgy International Research Institute for Steel TechnologyCollaborative Innovation Center for Advanced SteelsWuhan University of Science and TechnologyWuhan 430081HubeiChina Research Institute of Nanjing Iron and Steel Co. Ltd.Nanjing 210035JiangsuChina

The significance of different deoxidation practises on the ductility and impact toughness of next generation of microalloyed heavy plates was elucidated to explore the best deoxidation practice in obtaining required mechanical properties,which was judged by the combined effects of composition,size and number density of inclusions on the ductility of the experimental high-strength low alloy *** impurity contents,i.e.,total O+N+S contents,of 82×10^(-6)(Al-killed)and 118×10^(-6)(Zr-killed)have been induced to characterize both the *** was characterized using tensile and Charpy V-notch *** number,size and composition of the inclusions were characterized using a field emission scanning electron microscope with an energy dispersive *** the Al-killed steel,the inclusion structure consisted of titanium nitrides,stringer calcium aluminates and elongated manganese sulfides,whereas in the Zr-killed steel,the inclusion structure consisted of mainly fine spherical oxide inclusions with sulphide *** impurity content did not have a significant effect on the number density of inclusions,as with higher and lower impurity content,the number of inclusions was 83.7 and 78.8 mm^(-2),***,the size distribution of the inclusions,especially the coarse inclusions with their longest length greater than 8μm,differsmuch from each *** number density of coarse inclusions differs from 0.8 to 1.1 mm^(-2) with processing,and in Al-killed steel,55.5% of the coarse inclusions were titanium nitrides or manganese sulfides,whereas in Zr-killed steel,only 22.5% of the coarse inclusions were titanium nitrides and manganese *** titanium nitrides were especially detrimental to the impact *** number density of them should be below 0.33 mm-2 in order to guarantee the best possible toughness in the steel in *** average crystallographic grain size detected by electron backscattered diffraction of Zr-killed steel(4

关键词： microalloyed heavy plate Zr-killed technology Inclusion modification mechanical property

Effect of solid-solution strengthening on deformation mechanisms and strain hardening in medium-entropy V_(1-x)Cr_(x)CoNi alloys

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Journal of materials Science & Technology 2022年第13期108卷 270-280页

作者： Hyun Chung Dae Woong k.m Woo jin Cho Heung Nam Han Yuji Ikeda Shoji Ishibashi Fritz körmann Seok Su Sohn Department of materials Science and Engineering Korea UniversitySeoul 02841South Korea Center for High Entropy Alloys Pohang University of Science and TechnologyPohang 37673South Korea Department of materials Science and Engineering and Research Institute of Advanced materials Seoul National UniversitySeoul 08826South Korea Institute for materials Science University of StuttgartPfaffenwaldring 55Stuttgart 70569Germany Computational materials Design Max-Planck-Institut für Eisenforschung GmbHMax-Planck-Strabe 1Düsseldorf 40237Germany Research Center for Computational Design of Advanced Functional materials(CD-Fmat) National Institute of Advanced Industrial Science and Technology(AIST)TsukubaIbaraki 305-8568Japan Department of materials Science and Engineering Delft University of TechnologyMekelweg2Delft 2628 CDthe Netherlands

High-and medium-entropy alloys(HEAs and mEAs)possess high solid-solution *** investigations have been conducted on its impact on yield strength,however,there are limited reports regarding the relation between solid-solution strengthening and strain-hardening *** addition,no attempt has been made to account for the dislocation-mediated plasticity;most works focused on twinning-or transformation-induced plasticity(TWIP or TRIP).In this work we reveal the role of solidsolution strengthening on the strain-hardening rate via systematically investigating evolutions of deformation structures by controlling the Cr/V ratio in prototypical V_(1-x)Cr_(x)CoNi *** the TWIP of CrCoNi with the dislocation slip of V_(0.4)Cr_(0.6)CoNi,the hardening rate of CrCoNi was superior to slip-band refinements of V_(0.4)Cr_(0.6)CoNi due to the dynamic Hall-Petch ***,as V content increased further to V_(0.7)Cr_(0.3)CoNi and VCoNi,their rate of slip-band refinement in V_(0.7)Cr_(0.3)CoNi and VCoNi with high solid-solution strength surpassed that of *** it is generally accepted in conventional alloys that deformation twinning results in a higher strain-hardening rate than dislocation-mediated plasticity,we observed that the latter can be predominant in the former under an activated huge solid-solution strengthening *** high solid-solution strength lowered the cross-slip activation and consequently retarded the dislocation rearrangement rate,i.e.,the dynamic *** delay in the hardening rate decrease,therefore,increased the strain-hardening rate,results in an overall higher strain-hardening rate of V-rich alloys.

关键词： medium-entropy alloy Tensile property Solid-solution strength Strain-hardening rate Stacking fault energy

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An Upper Bound for the w-Weak Global Dimension of Pullbacks

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Algebra Colloquium 2021年第4期28卷 689-700页

作者： jin Xie Gaohua Tang College of mathematical Sciences Sichuan Normal University Chengdu 610068China College of Sciences Beibu Gulf UniversityQinzhouGuangxi 535011China

Let R be a commutative ring with identity and I0 an ideal of *** introduce and study the c-weak global dimension ***(R/I0)of the factor ring R/*** T be a w-linked extension of R,and we also introduce the wR-weak global dimension ***(T)of *** show that the ring T with ***(T)=0 is exactly a field and the ring T with ***(T)≤1 is exactly a *** an application,we give an upper bound for the w-weak global dimension of a Cartesian square(RDTF,m).more precisely,if T is w-linked over R,then ***(R)≤max{***(T)+w-fdR T,***(D)+w-fdn D}.Furthermore,for a milnor square(RDTF,m),we obtain ***(R)≤max{***(T)+w-fdR T,***(D)+w-fdR D}.

关键词： c-operation c-flat module c-flat dimension wR-flat module WR-flat dimension

Enhancing non-profiled side-channel attacks by time-frequency analysis

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Cybersecurity 2023年第4期6卷 50-75页

作者： Chengbin jin Yongbin Zhou Institute of Information Engineering Chinese Academy of SciencesBeijingChina School of Cyber Security University of Chinese Academy of SciencesBeijingChina School of Cyber Science and Engineering Nanjing University of Science and TechnologyNanjingChina

Side-channel analysis(SCA)has become an increasing important method to assess the physical security of cryptographic *** the process of SCA,the number of attack data directly determines the performance of *** sufficient attack data,the adversary can achieve a successful ***,in reality,the cryptographic device may be protected with some countermeasures to limit the number of encryptions using the same *** this case,the adversary cannot use casual numbers of data to perform *** performance of SCA will be severely dropped if the attack traces are *** this paper,we introduce wavelet scatter transform(WST)and short-time fourier transform(STFT)to non-profiled side-channel analysis domains,to improve the performance of side-channel attacks in the context of insufficient *** design a practical framework to provide suitable parameters for WST/STFT-based *** the proposed method,the WST/STFT-based SCA method can significantly enhance the performance and robustness of non-profiled *** practical attacks against four public datasets show that the proposed method is able to achieve more robust *** with the original correlation power analysis(CPA),the number of attack data can be reduced by 50–95%.

关键词： Correlation power analysis Side-channel analysis Proposed attack framework Wavelet scatter transform Short-time fourier transform

Design of Copper Oxide Nanosheets-Loaded Zeolite with Efficient Inhibition of marine Bacteria

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Journal of Ocean University of China 2022年第5期21卷 1237-1243页

作者： HOU jin YE Yongcheng key Laboratory of marine Chemistry Theory and Technology Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China Shandong key Laboratory of Corrosion Science Institute of OceanologyChinese Academy of SciencesQingdao 266100China

Copper oxide-loaded zeolite 4A nanocomposites(CuO-zeolite NCs)were successfully prepared by modifying zeolite 4A with CuSO_(4)aqueous solution as the copper *** 4A showed an important role in hosting copper oxide,and CuO-zeolite NCs exhibited a controlled release of copper *** patterns confirmed the appearance of new diffraction peaks of copper oxide at 35.83°and 38.83°.CuO nanosheets formed on the surface of zeolite 4A were about 30–40 nm thick over a width of 200–300 ***-zeolite NCs were primarily composed of Cu,Si,Al and O,as measured by *** 2p_(3/2) and Cu 2p_(1/2) peaks were fitted into two main peaks centered at 934.7 eV and 954.6 eV,which were attributed to Cu(II).Zeolite 4A and CuO-zeolite NC displayed reversible Langmuir isotherm(type-I)characteristics and showed maximum adsorption quantities of almost 200 cm^(3) g^(−1) at a relative pressure of 1.0 by CO_(2)adsorption-desorption *** antibacterial efficiencies of the CuO-zeolite NC were 99.4%,96.7%,and 96.8%against Pseudoalteromonas tetraodonis(***),micrococcus luteus(***),and Shewanella putrefaciens(***),*** values showed that nano CuO-loaded zeolite 4A acted as a strong bactericide against marine ***-zeolite NCs can be further applied to marine antifouling coating.

关键词： antibacterial activities marine bacteria copper oxide nanosheets zeolite

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