检索结果-南通市图书馆

Pyogenic liver abscess secondary to gastric perforation of an ingested toothpick:A case report

在线全文

学校读者我要写书评

暂无评论

世界临床病例杂志 2023年第23期11卷 5622-5627页

作者： Yeshong Park ho-Seong Han Yoo-Seok Yoon Jai Young Cho Boram Lee Mee Young kang Jinju Kim Hae Won Lee Department of Surgery Seoul National University Bundang HospitalSeongnam-si 13620South Korea

BACKGROUND Liver abscess due to foreign body-induced gastrointestinal tract perforation is a rare event that could be misdiagnosed due to low *** than 100 cases have been reported to *** SUMMARY We report a case of a 53-year old female patient with pyogenic liver abscess secondary to ingestion of a toothpick with penetration through the lesser curvature of the *** patient presented with persistent epigastric *** computed tomography demonstrated the presence of a linear radiopaque object associated with abscess formation in the left liver *** changes in the lesser curvature of the stomach indicated gastric wall penetration by the *** the abscess was refractory to antibiotic treatment,laparoscopic liver resection was performed to remove the foreign body and adjacent liver *** surgery,symptoms fully resolved without any *** This rare case demonstrates the importance of considering foreign body penetration as a cause of pyogenic liver abscess,particularly in abscesses of unknown origin that are resistant to antibiotic *** suspicion,early diagnosis,and prompt removal of the foreign body could lead to improved outcomes in these patients.

关键词： Foreign body ingestion Liver abscess Pyogenic liver abscess Liver resection Case report

Understanding Lithium-ion Transport in Sulfolane- and Tetraglyme-Based Electrolytes Using Very Low-Frequency Impedance Spectroscopy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2023年第1期6卷 368-376页

作者： Janet Sho Oleg A.Borodin Michael SDing Lin Ma Marshall A.Schroeder Glenn R.Pastel kang Xu Energy Sciences Division Sensors and Electron Devices DirectorateUS Army Research LaboratoryAdelphi MD 20783USA

With the increasing interest in highly concentrated electrolyte systems,correct determination of the cation transference number is ***-field gradient NMR technique,which measures self-diffusion coefficients,is often applied on liquid electrolytes because of the wide accessibility and simple sample ***,since the assumptions of this technique,that is,complete salt dissociation,all ions participating in motion,and all of them moving independently,no longer hold true in concentrated solutions,the transference numbers,thus obtained are often *** the present work,impedance spectroscopy at a frequency range of 1 MHz to 0.1 mHz was used to examine the concentration effect on lithium-ion transference number under anion-blocking conditions T abc Liþfor two electrolytes:lithium bis(fluorosulfonyl)imide(LiFSI)in sulfolane(SL)and lithium bis(trifluorosulfonyl)imide(LiTFSI)in tetraglyme(G4).The T abc Liþof the former was almost an order of magnitude higher than that of the *** also appeared to increase with increasing concentration while the latter followed an opposite *** faster Li^(+)transport in the SL system is attributed to the formation of a liquid structure consisting of extended chains/bridges of SL molecules and the anions,which facilitate a cation-hopping/ligand-exchanged-typed diffusion mechanism by partially decoupling the cations from the anions and solvent *** G4 system,in contrast,is dominated by the formation of long-lived,stable[Li(G4)]+solvation cages that results in a sluggish Li+*** difference between the two transport mechanisms is discussed via comparison of the bulk ionic conductivity,viscosity,ion self-diffusion coefficients,and the Onsager transport coefficients.

关键词： anion-blocking conditions ion correlations low-frequency impedance spectroscopy transference number

Three-dimensional porous graphene-metal oxide composite microspheres： Preparation and application in Li-ion batteries

在线全文

学校读者我要写书评

暂无评论

Nano Research 2015年第5期8卷 1584-1594页

作者： Seung ho Choi Jung-Kul Lee Yun Chan kang Department of Materials Science and Engineering Korea University Anam-Dong Seongbuk-Gu Seou1136-713 Republic of Korea Department of Chemical Engineering Konkuk University 1 Hwayang-Dong Gwangjin-Gu Seou1143-701 Republic of Korea

使用新三维(3D ) 多孔的 graphene 金属氧化物合成 microspheres 首先这里作为为 Li 离子电池(解放) 的阳极材料被介绍。3D graphene microspheres 是由 graphene 表组成的单个空 graphene nanospheres 的总数。金属氧化物 nanocrystals... 详细信息

使用新三维(3D ) 多孔的 graphene 金属氧化物合成 microspheres 首先这里作为为 Li 离子电池(解放) 的阳极材料被介绍。3D graphene microspheres 是由 graphene 表组成的单个空 graphene nanospheres 的总数。金属氧化物 nanocrystals 一致地在 microspheres 的 graphene 表面上被散布。3D 多孔的 graphene-SnO 因为他们的优异电气化学的性质， 2 microspheres 为调查作为第一目标材料被选择。3D 多孔的 graphene-SnO 2 和 graphene microspheres 和赤裸的 SnO 2 粉末交付 1,009， 196，和 52 mAh 癯摥眠敨 ? 桴 ? 桰瑯 ' 椰嫕湐擢撃龖 ` 整 ? 湩瀠瑯獡楳浵戠牯瑡 ? 畢晦牥猠汯瑵潩 ? 瀨的分泌物能力？？

关键词：锂离子电池金属氧化物多孔石墨复合微球三维 SnO2 应用制备

MXene ink hosting zinc anode for high performance aqueous zinc metal batteries

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 Energy Chemistry 2023年第1期76卷 187-194,I0005页

作者： Jae Min Park Milan Jana Sang Ha Baek Taehun kang Peixun Xiong Jeong Hee Park Jun Soo Kim Ali Shayesteh Zeraati Mikhail Shekhirev Paul V.Braun Yury Gogotsi ho Seok Park School of Chemical Engineering Sungkyunkwan University2066SeoburoJangan-guSuwon 440-746Republic of Korea Department of Chemical and Petroleum Engineering University of Calgary2500 University Dr NWCalgary T2N 1N4Canada Department of Materials Science and Engineering Materials Research LaboratoryBeckman Institute for Advanced Science and TechnologyUniversity of Ilinois at Urbana-ChampaignUrbanaIL61801USA A.J.Drexel Nanomaterials Institute and Department of Materials Science and Engineering Drexel UniversityPhiladelphiaPA 19104USA SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan University2066SeoburoJangan-guSuwon 440-746Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University 2066SeoburoJangan-guSuwon 440-746Republic of Korea

Despite the safety,low cost,and high theoretical capacity(820 mA h g^(-1))of Zn metal anodes,the practical application of aqueous Zn metal batteries remains a critical challenge due to the Zn dendrite growth,corrosion,and hydrogen evolution ***,we demonstrate the MXene ink hosting Zn metal anodes(MX@Zn)for high-performance and patternable Zn metal full *** as-designed MX@Zn electrode is more facile and reversible than bare Zn and CC@Zn,as verified by better cyclic stability and lower overpotentials of symmetric cells with the plating capacity of 0.05 mA h cm^(-2)at 0.1 m A cm^(-2)and of 1 m A h cm^(-2)at 1 m A cm^(-2).The MX@Zn|MnO_(2)full cells deliver a high specific capacity of 281.9 m A h g^(-1),91.5%of the theoretical capacity,achieving 50%capacity retention from 60 mA g^(-1)to 300 mA g^(-1)and 79.7%of initial capacity after 200 ***,the patterned devices based on the MX@Zn electrode achieve high energy and power densities of 348.57 Wh kg^(-1)and 1556 W kg^(-1),respectively,along with a capacity retention of 64%and Coulombic efficiency of 99%over 500 *** high performance of MX@Zn is attributed to the high electrical conductivity and hydrophilicity of MXene and rapid ion diffusion through the 3D interconnected porous channels.

关键词： MXene ink Zinc anode Metal batteries Patterning Electrodeposition

Comprehensive molecular analysis to predict the efficacy ofchemotherapy containing bevacizumab in patients with metastaticcolorectal cancer

在线全文

学校读者我要写书评

暂无评论

肿瘤学研究(英文) 2023年第6期31卷 855-866页

作者： SUNG HEE LIM HEE JIN Cho KYOUNG-MEE KIM ho YEONG LIM WON KI kang JEEYUN LEE YOUNG SUK PARK HEE CHEOL KIM SEUNG TAE KIM Division of Hematology/Oncology Department of MedicineSamsung Medical CenterSungkyunkwan University School of MedicineGangnam-guSeoul06351Korea Precision Medicine Research Institute Samsung Medical CenterGangnam-guSeoul06351Korea Department of Biomedical Convergence Science and Technology Kyungpook National UniversityDaegu41566Korea Department of Pathology and Translational Genomics Samsung Medical CenterSungkyunkwan University School of MedicineSeoul06351Korea Department of Surgery Samsung Medical CenterSungkyunkwan University School of MedicineGangnam-guSeoul06351Korea

Background:Although bevacizumab is an important treatment for metastatic colorectal cancer(CRC),not allpatients with CRC benefit from it;in unselected patient populations,only modest survival benefits have been ***:We evaluated clinical outcomes in 110 patients using comprehensive molecular characterization to identifybiomarkers for a response to bevacizumab-containing *** molecular analysis comprised whole-exomesequencing,ribonucleic acid sequencing,and a methylation array on patient ***:Genomic and molecularcharacterization was successfully conducted in 103 *** of 103 CRC samples were hypermutated,and none ofthe non-hypermutant tumors were microsatellite *** those 103 patients,89 had adenocarcinoma(ADC),15 were diagnosed with mucinous ADC,and six had signet-ring cell carcinoma(SRCC).Consensus molecular subtype(CMS)2 was unique to *** the four SRCCs,two were CMS1,one was CMS4,and the other was *** status was a significantly enriched factor in responders to bevacizumab *** growth factorreceptor(FGFR)1/2 signaling was upregulated in non-responders,whereas cell cycle,transfer ribonucleic acidprocessing,nucleotide excision repair,and oxidative phosphorylation pathways were enriched in ***,IGF1 was differentially expressed in non-responders(log2 fold change=−1.43,p=4.11×10^(−5),falsediscovery rate=0.098),and FLT1 was highly methylated in non-responders(p=7.55×10^(−3)).When the molecularpathways were reanalyzed separately according to the backbone chemotherapy(FOLFOX ***),thesignificance of the molecular pathways varied according to the backbone ***:This studysought a subset of CRC patients with a distinct clinical response to chemotherapy containing *** need to be validated in a large group of homogenous patient cohort and examined according to the differentchemotherapy backbones to create personalized therapeutic oppor

关键词： Bevacizumab Whole-exome sequencing Ribonucleic acid sequencing Methylation array Colorectal cancer

Primary thymic mucosa-associated lymphoid tissue lymphoma with multiple thin walled lung cysts: case report and literature review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2013年第3期25卷 354-357页

作者： Lung-Yun kang Szu-Pei ho Yi-Pin Chou Department of Emergency Medicine Kaohsiung Veterans General Hospital Department of Pathology Kaohsiung Veterans General Hospital

Mucosa-associated lymphoid tissue （MALT） lymphoma of the thymus is rare. We reported a case of a 37-year-old Chinese female with Sjtgren＇s syndrome and hyperglobulinemia. She suffered from chronic cough for 3 weeks. Chest computed tomography （CT） demonstrated a multiloculated cystic mass in mediastinum prevascular space and multiple lung cysts. Laboratory exam of autoimmune markers showed positive of antinuclear antibody （ANA）, Sjtgren＇s syndrome A （SSA）, Sjtgren＇s syndrome B （SSB）, and rheumatoid factors （RF）. Thymectomy with lymph node dissection was performed. The pathology report revealed thymic extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue. Under immunohistochemical stains, CD20 and Bcl-2 were positive. No evidence of recurrence of disease was found.

关键词： Mucosa-associated lymphoid tissue (MALT) lymphoma thymus Sj6gren's syndrome hyperglobulinemia

Effects of casting speed on microstructure and segregation of electromagnetically stirred Aluminum alloy in continuous casting process

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2006年第Z2期25卷 118-123页

作者： LEE Dock-Young kang Suk-Won Cho Duck-ho KIM Ki-Bae Division of Materials Korea Institute of Science and Technology P.O. Box 131 Cheongryang Seoul 130-650 Korea Department of Applied Materials Engineering Hanbat National University Daejeon 305-719 Korea

Recently, a semi-solid metal processing has been acknowledged as a cost-effective technique to be able to manufacture high quality product for the transportation industry. In this study a hypo-eutectic Al alloy was fabricated by means of an electromagnetic stirrer in continuous casting process and the microstructural change during solidification due to a fluid flow by electromagnetic stirring was examined. Due to the forced fluid flow during solidification a dendritic phase of primary α phase of Al alloy was turned into a globular phase, which can make the Al alloy get a thixotropic behavior in the semi-solid region. In order to establish the quantitative relationship between microstructure and the process parameters, the morphology shape, a silicon distribution and a size of primary α phase were observed according to casting speed in continuous casting machine. The primary α phase was turned into the degenerate dendrites approaching a spherical configuration with increasing casting speed. The fine-grained and equiaxed microstructure appeared at higher casting speed. A segregation behavior of Si element was declined with increasing casting speed and a very uniform distribution of Si element was observed on the billet at a casting speed of 600 mm·min-1. A thickness of the solidifying shell of the billet was shortened with increasing the casting speed.

关键词： semi-solid slurry electromagnetic stirring casting speed segregation Al alloy

Recent TCP(Tidal Current Power) projects in Korea

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2010年第1期53卷 57-61页

作者： Chul Hee JO kang Hee LEE Yu ho Rho School of Engineering Inha University253Yonghyun-DongNam-GuIncheon 402-751Republic of Korea Graduate School Department.of Naval Architecture & Ocean EngineeringInha University253Yonghyun-DongNam-GuIncheon 402-751Republic of Korea

Having strong current on the west coast with up to 10 m tidal range in Korea,there are many suitable and applicable locations for TCP(Tidal Current Power) application in *** only the west coast,but also the south west regions having narrow channels between islands creating fast ocean stream are suitable for *** first TCP application in Korea is 1 MW helical VAT(Vertical Axis Turbine) device installed in Wooldolmog area in *** first HAT(horizontal Axis Turbine) TCP device of 25 KW was developed and installed in cooling water weir of Samchonpo power plant in ***,a 100 kW prototype HAT TCP device is being planned to be installed in Daebang strait in *** big project would be Inchon TCP farm of 200 MW on the west coast in *** consortium of 5 members was formed in April,*** site will be the largest TCP site in the *** paper describes recent TCP projects in Korea with background and environmental conditions of the projects.

关键词： TCP(Tidal Current Power) ocean energy renewable energy clean energy HAT(horizontal Axis Turbine) VAT(Vertical Axis Turbine)

RANKL-responsive epigenetic mechanism reprograms macrophages into bone-resorbing osteoclasts

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2023年第1期20卷 94-109页

作者： Seyeon Bae Kibyeong Kim Keunsoo kang Haemin Kim Minjoon Lee Brian Oh Kaichi Kaneko Sungkook Ma Jae hoon Choi hojoong Kwak Eun Young Lee Sung ho Park Kyung-Hyun Park-Min Arthritis and Tissue Degeneration Program David Z.Rosensweig Genomics Research CenterHospital for Special SurgeryNew YorkNY10021USA Department of Medicine Weill Cornell Medical CollegeNew YorkNY10065USA Department of Biological Science Ulsan National Institute of Science&Technology(UNIST)Ulsan44919Republic of Korea Department of Life Science College of Natural SciencesResearch Institute for Natural SciencesHanyang UniversitySeoulKorea Department of Microbiology Dankook UniversityCheonan3116Republic of Korea Department of Molecular Biology and Genetics Cornell UniversityIthacaUSA Division of Rheumatology Department of Internal MedicineSeoul National University College of MedicineSeoulKorea BCMB Allied Program Weill Cornell Graduate School of Medical SciencesNew YorkNY10021USA

Monocyte/macrophage lineage cells are highly plastic and can differentiate into various cells under different environmental stimuli. Bone-resorbing osteoclasts are derived from the monocyte/macrophage lineage in response to receptor activator of NF-κB ligand (RANKL). however, the epigenetic signature contributing to the fate commitment of monocyte/macrophage lineage differentiation into human osteoclasts is largely unknown. In this study, we identified RANKL-responsive human osteoclast-specific superenhancers (SEs) and SE-associated enhancer RNAs (SE-eRNAs) by integrating data obtained from ChIP-seq, ATAC-seq, nuclear RNA-seq and PRO-seq analyses. RANKL induced the formation of 200 SEs, which are large clusters of enhancers, while suppressing 148 SEs in macrophages. RANKL-responsive SEs were strongly correlated with genes in the osteoclastogenic program and were selectively increased in human osteoclasts but marginally presented in osteoblasts, CD4+ T cells, and CD34+ cells. In addition to the major transcription factors identified in osteoclasts, we found that BATF binding motifs were highly enriched in RANKL-responsive SEs. The depletion of BATF1/3 inhibited RANKL-induced osteoclast differentiation. Furthermore, we found increased chromatin accessibility in SE regions, where RNA polymerase II was significantly recruited to induce the extragenic transcription of SE-eRNAs, in human osteoclasts. Knocking down SE-eRNAs in the vicinity of the NFATc1 gene diminished the expression of NFATc1, a major regulator of osteoclasts, and osteoclast differentiation. Inhibiting BET proteins suppressed the formation of some RANKL-responsive SEs and NFATc1-associated SEs, and the expression of SE-eRNA:NFATc1. Moreover, SE-eRNA:NFATc1 was highly expressed in the synovial macrophages of rheumatoid arthritis patients exhibiting high-osteoclastogenic potential. Our genome-wide analysis revealed RANKL-inducible SEs and SE-eRNAs as osteoclast-specific signatures, which may contribute to t

关键词： Osteoclasts super-enhancers enhancer RNAs Rheumatoid arthritis