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Ultra-flexible semitransparent organic photovoltaics

npj Flexible Electronics 2023年第1期7卷 274-282页

作者： hanbee Lee Soyeong Jeong Jae-hyun Kim Yong-Ryun Jo h.eong ju eun Byoungwook Park Sung Cheol Yoon Jong h.Kim Seung-hoon Lee Sungjun Park Department of Electrical and Computer Engineering Ajou UniversitySuwon 16499Republic of Korea Department of Chemistry and Centre for Processable Electronics Imperial College LondonWhite City W120BZUK Department of Intelligence Semiconductor Engineering Ajou UniversitySuwon 16499Republic of Korea Advanced Photonics Research Institute(APRI) Gwangju Institute of Science and Technology(GIST)Gwangju 61005Republic of Korea Division of Molecular Science and Technology Ajou UniversitySuwon 16499Republic of Korea Division of Advanced Materials Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Republic of Korea Division of Advanced materials Engineering Kongju National University1223-24 Cheonan-daeroSeobuk-guCheonan-siChungcheongnam-doRepublic of Korea

Ultra-flexible organic photovoltaics(OPVs)are promising candidates for next-generation power sources owing to their low weight,transparency,and ***,obtaining ultra-flexibility under extreme repetitive mechanical stress while maintaining optical transparency remains challenging because of the intrinsic brittleness of transparent ***,we introduce straindurable ultra-flexible semitransparent OPVs with a thickness below 2μ*** conformal surface coverage of nanoscale thin metal electrodes(hieved,resulting in extremely low flexural rigidity and high strain ***-depth optical and electrical analyses on ultrathin metal electrodes showed that the devices maintain over 73%of their initial efficiency after 1000 cycles of repetitive compression and release at 66%compressive strain,and the average visible light transmittances remain higher than 30%.To our knowledge,this is the first systematical study on mechanical behaviors of strain-durable ultra-flexible ST-OPVs through precise adjustment of each ultrathin electrode thickness toward the emergence of next-generation flexible power sources.

关键词： transparency durability rigidity

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Exosome-guided direct reprogramming of tumor-associated macrophages from protumorigenic to antitumorigenic to fight cancer

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Bioactive Materials 2023年第7期25卷 527-540页

作者： hyosuk Kim hyun-ju Park hyo Won Chang Ji hyun Back Su Jin Lee Yae eun Park eun hye Kim Yeonsun hong Gijung Kwak Ick Chan Kwon Ji eun Lee Yoon Se Lee Sang Yoon Kim Yoosoo Yang Sun hwa Kim Medicinal Materials Research Center Biomedical Research InstituteKorea Institute of Science and TechnologySeoul02792Republic of Korea Department of Functional Genomics KRIBB School of BioscienceKorea University of Science and Technology(UST)Daejeon34141Republic of Korea Department of Otolaryngology Asan Medical CenterUniversity of Ulsan College of MedicineSeoul05505Republic of Korea Chemical&Biological Integrative Research Center Biomedical Research InstituteKorea Institute of Science and TechnologySeoul02792Republic of Korea Department of Biotechnology College of Life Sciences and BiotechnologyKorea UniversitySeoul02841Republic of Korea Department of Life Sciences Korea UniversitySeoul02841Republic of Korea

highly immunosuppressive tumor microenvironment containing various protumoral immune cells accelerates malignant transformation and treatment *** particular,tumor-associated macrophages(TAMs),as the predominant infiltrated immune cells in a tumor,play a pivotal role in regulating the immunosuppressive tumor *** a potential therapeutic strategy to counteract TAMs,here we explore an exosome-guided in situ direct reprogramming of tumor-supportive M2-polarized TAMs into tumor-attacking M1-type *** derived from M1-type macrophages(M1-Exo)promote a phenotypic switch from anti-inflammatory M2-like TAMs toward pro-inflammatory M1-type macrophages with high conversion *** M1 macrophages possessing protein-expression profiles similar to those of classically activated M1 macrophages display significantly increased phagocytic function and robust cross-presentation ability,potentiating antitumor immunity surrounding the ***,these M1-Exo also lead to the conversion of human patient-derived TAMs into M1-like macrophages that highly express MhC class II,offering the clinical potential of autologous and allogeneic exosome-guided direct TAM reprogramming for arming macrophages to join the fight against cancer.

关键词： Exosome Cancer therapy Tumor microenvironment Tumor-associated macrophage Direct conversion

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无碱CO_(2)加氢高效制甲酸Pd/g-C_(3)N_(4)催化剂的单原子和纳米簇的协同作用

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Chinese Journal of Catalysis 2023年第4期47卷 214-221页

作者： eun hyup Kim Min hee Lee Jeehye Kim eun Cheol Ra ju h.eong Lee Jae Sung Lee 蔚山国家科学技术研究所能源与化学工程学院(UNIST) 韩国

气候变化威胁人类的生存.化石燃料的过度使用导致CO_(2)持续排放是引起全球变暖和气候变化的主要因素,须尽快减少CO_(2)排放.捕获CO_(2)并将其转化为高附加值的燃料和化学品从而循环利用是减少CO_(2)净排放的有效措施.其中,CO_(2)催化... 详细信息

气候变化威胁人类的生存.化石燃料的过度使用导致CO_(2)持续排放是引起全球变暖和气候变化的主要因素,须尽快减少CO_(2)排放.捕获CO_(2)并将其转化为高附加值的燃料和化学品从而循环利用是减少CO_(2)净排放的有效措施.其中,CO_(2)催化加氢制甲酸(hCOOh)是碳捕获与利用(CCU)的有效途径之一,其产物hCOOh可用于防腐剂、牲畜饲料抗菌剂和食品添加剂,也可作为氢载体和直接甲酸燃料电池的燃料.目前,工业上生产hCOOh的工艺包括两个步骤:甲醇和CO在强碱条件下反应生成甲酸甲酯(hCO_(2)Ch_(3)),随后水解为hCOOh.该工艺利用来自化石燃料的两种原料,排放出大量CO_(2),同时在水解步骤中使用了过量的酸性水,因此对生态环境产生一定的危害.近年来,以CO_(2)为可再生原料合成hCOOh被广泛研究,人们探索了电化学、光化学、生物和热化学反应等多种途径将CO_(2)还原为hCOOh,以期实现CO_(2)循环利用.上述方法距实际应用尚有一定距离,其中,CO_(2)催化加氢制hCOOh过程最先进,它与当前许多化学工业过程相似.由于CO_(2)分子的化学稳定性,CO_(2)加氢生成hCOOh在热力学上不利,可通过有机碱和无机碱形成甲酸-碱配合物,推动反应向生成hCOOh方向移动.然而,从甲酸基配合物中提取hCOOh需要额外的分离步骤,因此在无碱条件下直接将CO_(2)加氢生成hCOOh非常重要.本课题组致力于研究无碱条件下g-C_(3)N_(4)负载的Pd(记为Pd/CN)催化剂催化CO_(2)加氢合成hCOOh,前期研究(***.,2016,52,14302-14305和***.,2021,396,395-401)发现,通过控制Pd负载量可改变催化剂中Pd单原子/Pd纳米团簇的比例,且当两种状态Pd达到最佳比例时,催化剂催化活性最高.这表明在无碱CO_(2)加氢过程中,Pd单原子与纳米团簇间存在协同作用.此外,最近有关于单原子和纳米团簇在负载金属催化剂中不同作用的报道,如NixMg1-xO催化逆水气变换反应,Ir1/In_(2)O_(3)和Pd/Fe_(3)O_(4)催化CO_(2)加氢制乙醇反应等,这些工作得出相似的结论:单原子金属对CO_(2)活化有效,而纳米团簇对h_(2)活化有效.这对于设计以CO_(2)和h_(2)为反应物的金属催化剂很重要.本工作旨在考察类似的机理是否适用于Pd/CN催化剂在无碱条件下催化CO_(2)加氢制hCOOh过程.通过控制Pd负载量,合成了含有不同比例Pd单原子和Pd纳米团簇的Pd/CN催化剂,Pd与g-C_(3)N_(4)表面碱性位间的强静电相互作用使合成含有大量Pd单原子的Pd/CN催化剂成为可能.在Pd/CN催化剂催化无碱CO_(2)加氢制hCOOh过程中,当两种状态Pd达到最佳比例时,Pd单原子和Pd纳米簇之间存在协同作用,此时催化剂活性最高.实验表明,Pd纳米簇主要通过解离吸附参与h_(2)活化,Pd单原子对CO_(2)活化更有效.在最佳单原子比(单原子数/(单原子数+纳米簇)为41%)时,该催化剂表现出最高的活性,优于文献报道的相似反应条件下Pd催化剂活性.这些发现将为以CO_(2)和h_(2)分子为反应物的反应的催化剂设计提供一定的参考.

关键词：无碱CO_(2)加氢制甲酸 Pd/g-C_(3)N_(4) 单原子催化剂纳米簇催化剂协同效应

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Recent progress on the seasonal tropical cyclone predictions over the western North Pacific from 2014 to 2020

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Tropical Cyclone Research and Review 2022年第1期11卷 26-35页

作者： eun-Jeong Cha Se hwan Yang Yu Sun hyun Chang-hoi ho Il-ju Moon Meso-scale Meteorological Phenomenon Research Team National Institute of Meteorological SciencesKorean Meteorological AdministrationJejuRepublic of Korea National Typhoon Center Korean Meteorological AdministrationJejuRepublic of Korea School of Earth and Environmental Sciences Seoul National UniversitySeoulRepublic of Korea Typhoon Research Center Jeju National UniversityJejuRepublic of Korea

This study summarized the procedure for the seasonal predictions of tropical cyclones(TCs)over the western North Pacific(WNP),which is currently operating at the Korea Meteorological Administration(KMA),Republic of *** methodology was briefly described,and its prediction accuracy was *** predictions were produced by synthesizing spatiotemporal evolutions of various climate factors such as El Ni no–Southern Oscillation(ENSO),monsoon activity,and Madden–julian Oscillation(MJO),using four models:a statistical,a dynamical,and two statistical–dynamical *** KMA forecaster predicted the number of TCs over the WNP based on the results of the four models and season to season climate *** seasonal prediction of TCs is announced through the press twice a year,for the summer on May and fall on *** present results showed low accuracy during the period 2014–*** advance forecast skill,a set of recommendations are suggested.

关键词： Tropical cyclones Seasonal prediction Western north pacific Statistical model Statistical-dynamical model Dynamical model Forecast error and verification

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Class Ⅰ histone deacetylase inhibition is synthetic lethal with BRCA1 deficiency in breast cancer cells

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Acta Pharmaceutica Sinica B 2020年第4期10卷 615-627页

作者： Baoyuan Zhang junfang Lyu eun ju Yang Yifan Liu Changjie Wu Lakhansing Pardeshi Kaeling Tan Qiang Chen Xiaoling Xu Chu-Xia Deng Joong Sup Shim Cancer Centre Faculty of Health SciencesUniversity of MacaoMacao SARChina Institute of Translational Medicine Faculty of Health SciencesUniversity of MacaoMacao SARChina

Breast cancer susceptibility gene 1(BRCA1)is a tumor suppressor gene,which is frequently mutated in breast and ovarian ***1 plays a key role in the homologous recombination directed DNA repair,allowing its deficiency to act as a therapeutic target of DNA damaging *** this study,we found that inhibition of the classⅠhistone deacetylases(hDAC)exhibited synthetic lethality with BRCA1 deficiency in breast cancer *** profiling and validation study showed that hDAC inhibition enhanced the expression of thioredoxin interaction protein(TXNIP),causing reactive oxygen species(ROS)-mediated DNA *** effect induced preferential apoptosis in BRCA1-/-breast cancer cells where DNA repair system is *** animal experiments and gene expression-associated patients’survival analysis further confirmed in vivo synthetic lethality between BRCA1 and ***,the combination of inhibitors of hDAC and bromodomain and extra-terminal motif(BET),another BRCA1 synthetic lethality target that also works through oxidative stress-mediated DNA damage,showed a strong anticancer effect in BRCA1-/-breast cancer ***,this study provides a new therapeutic strategy for BRCA1-deficient breast cancer by targeting two epigenetic machineries,hDAC and BET.

关键词： BRCA1 histone deacetylase hDAC Synthetic lethality Reactive oxygen species DNA damage Breast cancer

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Fabrication of high-strength duplex nanoporous Cu by dealloying a dual-phase Mg-Cu precursor alloy

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Journal of Magnesium and Alloys 2020年第3期8卷 910-916页

作者： Si-Young Lee Soo-Min Baek eun-Ji Gwak Na-Ri Kang ju-Young Kim Su-hyeon Kim jung Gu Lee Sung Soo Park School of Materials Science and Engineering Ulsan National Institute of Science and TechnologyUlsan 44919Republic of Korea Korea Institute of Materials Science Changwon 51508Republic of Korea School of Materials Science and Engineering University of UlsanUlsan 44610Republic of Korea

Duplex nanoporous Cu was successfully fabricated by dealloying a dual-phase Mg-Cu precursor alloy consisting of intermetallic Mg2Cu and *** duplex nanoporous Cu with embedded nanoporous struts exhibited highly enhanced strength compared to the typical monolithic nanoporous Cu under both compressive and flexural test conditions at room temperature;the duplex np-Cu sample exhibited a 12 times higher compressive strength and a 40 times greater flexural strength than the monolithic np-Cu *** responsible for the strength enhancement in the duplex nanoporous Cu are discussed.

关键词： Mg-Cu alloy Nanoporous Cu Dealloying Duplex structure Strength

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A feasible route to produce 1.1 GPa ferritic-based low-Mn lightweight steels with ductility of 47%

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Journal of Materials Science & Technology 2022年第22期117卷 225-237页

作者： Kwang Kyu Ko hyo ju Bae eun hye Park hyeon-Uk Jeong hyoung Seok Park Jae Seok Jeong jung Gi Kim hyokyung Sung Nokeun Park Jae Bok Seol Department of Materials Engineering and Convergence Technology Center for K-metalGyeongsang National University(GNU)Jinju 52828South Korea School of Materials Science and Engineering Yeungnam UniversityGyeongbuk 38541South Korea Materials Research Team R&D Hyundai MobisYongin 16891South Korea Materials Technology Development Team Doosan Heavy Industries&ConstructionChangwon 51711South Korea

high- and medium-Mn (h/M-Mn) base lightweight steels are a class of ultrastrong structural materials with high ductility compared to their low-Mn counterparts with low strength and poor ***, producing these h/M-Mn materials requires the advanced or high-tech manufacturing techniques, which can unavoidably provoke labor and cost concerns. herein, we have developed a facilestrategy that circumvents the strength–ductility trade-off in low-Mn ferritic lightweight steels, by employing low-temperature tempering-induced partitioning (LTP). This LTP treatment affords a typical Fe-2.8Mn-5.7Al-0.3C (wt.%) steel with a heterogeneous size-distribution of metastable austenite embeddedin a ferrite matrix for partitioning more carbon into smaller austenite grains than into the larger austenite ones. This size-dependent partitioning results in slip plane spacing modification and lattice strain,which act through dislocation engineering. We ascribe the simultaneous improvement in strength andtotal elongation to both the size-dependent dislocation movement in austenite grains and the controlleddeformation-induced martensitic transformation. The low-carbon-partitioned large austenite grains increase the strength and ductility as a consequence of the combined martensitic transformation andhigh dislocation density-induced hardening and by interface strengthening. Additionally, high-carbonpartitioned small austenite grains enhance the strength and ductility by planar dislocation glide (inthe low strain regime) and by cross-slipping and delayed martensitic transformation (in the high strainregime). The concept of size-dependent dislocation engineering may provide different pathways for developing a wide range of heterogeneous-structured low-Mn lightweight steels, suggesting that LTP maybe desirable for broad industrial applications at an economic cost.

关键词： Low-Mn lightweight steel Carbon partitioning Metastable austenite Dislocation movement

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Contemporary trends in radical prostatectomy and predictors of recovery of urinary continence in men aged over 70 years:comparisons between cohorts aged over 70 and less than 70 years

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Asian Journal of Andrology 2020年第3期22卷 280-286页

作者： Young ju Lee Jin-Woo jung Sangchul Lee Sang Wook Lee Jeong hyun Kim Sung Kyu hong Seok-Soo Byun Sang eun Lee Seong Jin Jeong Departme nt of Urology Seoul National University Bundang HospitalSeongnam 13620Korea Department of Urology Catholic Kwan dong Univerisity International St.Mary's HospitalIncheon 22711Korea Department of Urology Kangwon National University School of MedicineChuncheon 24341Korea.

We evaluated contemporary trends in radical prostatectomy(RP)in men aged>70 years and investigated associations of selected variables with recovery of urinary continence(UC)in two age groups:>70 andhort of 2301 eligible patients attending our institution from 2004 to 2015 was *** were divided into two groups based on age at surgery(>70 years[n=610]vshe study period,the proportion of patients aged>70 years gradually increased up to 30.0%,and the rate of robot-assisted RP and neurovascular bundle(NVB)saving increased continually to 80.0%and 67.4%of older patients,*** the rate of recovery of UC within 12 months(3 months)in patients aged>70 years was lower than that in those aged S70 years(81.5%[52.6%]vs 88.6%[60.9%],respectively;both Phe gap between age groups in the rate of recovery within 12 mon ths n arrowed from the sec ond quarter of the study *** youn ger patie nts,age,robot-assisted RP,prostate volume,membra nous urethral length(MUL),and NVB savi ng were predictors of recovery of UC within 3 or 12 *** contrast,only age and MUL were predictors of recovery of UC within 3 and 12 months in patients aged>70 ***,unlike younger patients,only variables(age and MUL),possibly associated with the inhere nt fun ction of the urinary sphi ncter,were predictors of recovery of UC in patients aged>70 years.

关键词： elderly predictor prostate cancer radical prostatectomy urinary incontinence

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The association of stromal antigen 3(STAG3) sequence variations with spermatogenic impairment in the male Korean population

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Asian Journal of Andrology 2020年第1期22卷 106-111页

作者： Yeojung Nam Kyung Min Kang Se Ra Sung Ji eun Park Yun-Jeong Shin Seung hun Song ju Tae Seo Tae Ki Yoon Sung han Shim Department of Biomedical Science College of Life ScienceCHA UniversitySeongnam 13488Korea Genetics Laboratory Fertility Center of CHA Gangnam Medical CenterCHA UniversitySeoul 06135Korea Department of Urology CHA Gangnam Medical CenterCHA UniversitySeoul 06135Korea Department of Urology Cheil General HospitalSeoul 04619Korea Department of Obstetrics and Gynecology CHA Gangnam Medical CenterSeoul 04637Korea

The stromal antigen 3(STAG3)gene,encoding a meiosis-specific cohesin component,is a strong candidate for causing male infertility,but little is known about this gene so *** identified STAG3 in patients with nonobstructive azoospermia(NOA)and normozoospermia in the Korean *** coding regions and their intron boundaries of STAG3 were identified in 120 Korean men with spermatogenic impairments and 245 normal controls by using direct sequencing and haplotype analysis.A total of 30 sequence variations were identified in this *** the total,seven were exonic variants,18 were intronic variants,one was in the 5’-UTR,and four were in the 3'-*** variations that directly caused NOA were not ***,two variants,c.3669+35C>G(rs1727130)and+198A>T(rs1052482),showed significant differences in the frequency between the patient and control groups(P=0.021,odds ratio[OR]:1.79,95%confidence interval[Cl]:1.098-2.918)and were tightly linked in the linkage disequilibrium(LD)*** pmir-rs1052482A was cotransfected with miR-3162-5p,there was a substantial decrease in luciferase activity,compared with *** result suggests that rsl052482 was located within a binding site of miR-3162-5p in the STAG33'-UTR,and the minor allele,the rs1052482T polymorphism,might offset inhibition by *** are the first to identify a total of 30 single-nucleotide variations(SNVs)of STAG3 gene in the Korean *** found that two SNVs(rs1727130 and rsl052482)located in the 3'-UTR region may be associated with the NOA *** findings contribute to understanding male infertility with spermatogenic impairment.

关键词： linkage disequilibrium meiotic-specific gene single-nucleotide variations spermatogenic impairment stromal antigen 3 gene

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Aralia elata inhibits neurodegeneration by downregulating O-GlcNAcylation of NF-κB in diabetic mice

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International Journal of Ophthalmology(English edition) 2017年第8期10卷 1203-1211页

作者： Seong-Jae Kim Min-jun Kim Mee- Young Ckoi Yoon-Sook Kim Ji-Myong Yoo eun-Kyung hong Sunmi ju Wan-Sung Choi Department of Ophthalmology School of MedicineGyeongsang National University Jinju 52727 Korea Department of Anatomy and Convergence Medical Science School of Medicine Gyeongsang National University Jinju52727 Korea Institute of health Science Gyeongsang National UniversityJinju 52727 Korea Medvill Co. Ltd. Seoul 08511 Korea Division of Pulmonology and Allergy Department ofInternal Medicine School of Medicine Gyeongsang NationalUniversity Jinju 52727 Korea

AIM： To investigate the role of O-GIcNAcylation of nuclear factor-kappa B （NF-KB） in retinal ganglion cell （RGC） death and analysedthe effect of Aralia elata （AE） on neurodegen- eration in diabetic mice. METhODS： C57BL/6mice with streptozotocin-induced diabetes were fed daily with AE extract or control （CTL） diet at the onset of diabetes mellitus （DM）. Two months af- tar injection of streptozotocin or saline, the degree of cell death and the expression of O-GIcNAc transferase （OGT）, N-acetyl-b-D-glucosaminidase （OGA）, O-GIcNAcylated pro- teins, and O-GIcNAcylation of NF-KB were examined. RESULTS： AE did not affect the metabolic status of diabetic mice. The decrease in the inner retinal thickness （P〈0.001 vs CTL, P〈0.01 vs DM） and increases in RGCs with terminal deoxynucleotidyl transferase-mediated dUTP nick end labelling （P〈0.001 vs CTL, P〈0.0001 vs DM）, glial activation, and active caspase-3 （P〈0.0001 vs CTL, P〈0.0001 vs DM） were blocked in diabetic retinas of AE extract-fed mice. Expression levels of protein O-GIcNAcylation and OGT were increased in diabetic retinas （P〈0.0001 vs CTL）, and the level of O-GIcNAcylation of the NF-KB p65 subunit was higher in diabetic retinas than in controls （P〈0.0001 vs CTL）. AE extract downregulated O-GIcNAcylation of NF-KB and prevented neurodegeneration induced by hyperglycemia （P〈0.0001 vs DM）. CONCLUSION： O-GIcNAcylation of NF-KB is concerned in neuronal degeneration and that AE prevents diabetes-in- duced RGC apoptosis via downregulation of NF-KB O-GI- cNAcylation. hence, O-GIcNAcylation may be a new object for the treatment of DR, and AE may have therapeutic pos- sibility to prevent diabetes-induced neurodegeneration.

关键词： Aralia elata diabetic retinopathy neurode- generation nuclear factor-kappa B O-GlcNAc O-GlcNAc transferase mice

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