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Hepatobiliary & Pancreatic Diseases International 2002年第3期1卷 368-372页

作者： Zhao-Xi Qin Xu Cong Dong Jiang ming-hao ha Hong-Song Chen Lai Wei Institute of Hepatology People's Hospital Beijing University Beijing 100044 China.

Objectives: To obtain very end full-length cDNA ofhepatitis C virus (HCV) 5’ untranslated region(5’UTR) and analyze its primary and ***: A patient infected genotype 2a HCV wasidentified by reverse transcription-nested polymerasechain reaction (RT-PCR) and restriction fragmentlength polymorphism (RFLP). Total RNA isolatedfrom the serum was used as template, and the cDNAof the 5’ untranslated region was amplified using rap-id amplification of cDNA ends (RACE). The frag-ments were recombinated by A-T clone strategy, andthe recombinants were confirmed by RFLP andPCR, and sequenced subsequently. Secondary struc-tures were analysed by ***: Very end full-length cDNA of genotype 2aHCV 5’ UTR was obtained by RACE. In five clonesobtained, three contained full-length 5’UTR cDNA;A21G, G170A, T222C, T247C, C339T substitutionswere found as compared to HC-J6. Homological re-sults of HCV-1, HC-J6, HC-C2, HC-J8 were 93.6%-94.4%, 92.1%-93%, 98.8%-99.7%, 96.2%-96.5%, respectively; however, the substitutions didnot alter secondary structure. Two of 5 clones weredeletions of 53bp and 135bp at the 5’terminal ofHCV 5’UTR, ***: RACE can be used to obtain the full-length cDNA of 2a genotype HCV 5’UTR. Genes de-leted at the 5’ terminal of HCV circulate in hepatitisC patients.

关键词： hepatitis C 5’ untranslated region sequence analysis rapid amplification cDNA ends

MoS_(2)Lubricate‑Toughened MXene/ANF Composites for Multifunctional Electromagnetic Interference Shielding

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Nano-Micro Letters 2025年第2期17卷 358-371页

作者： Jiaen Wang Wei ming Longfu Chen Tianliang Song Moxi Yele hao Zhang Long Yang Gegen Sarula Benliang Liang Luting Yan Guangsheng Wang School of Physical Science and Engineering Beijing Jiaotong UniversityBeijing 100044People’s Republic of China Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191People’s Republic of China

The design and fabrication of high toughness electromagnetic interference(EMI)shielding composite films with diminished reflection are an imperative task to solve electromagnetic pollution *** MXene/ANF(aramid nanofibers)–MoS_(2)composite films with nacre-like layered structure here are fabricated after the introduction of MoS_(2)into binary MXene/ANF composite *** introduction of MoS_(2)fulfills an impressive“kill three birds with one stone”improvement effect:lubrication toughening mechanical performance,reduction in secondary reflection pollution of electromagnetic wave,and improvement in the performance of photothermal *** the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 50:50),the strain to failure and tensile strength increase from 22.1±1.7%and 105.7±6.4 MPa and to 25.8±0.7%and 167.3±9.1 MPa,*** toughness elevates from 13.0±4.1 to 26.3±0.8 MJ m^(−3)(~102.3%)*** the reflection shielding effectiveness(SE_(R))of MXene/ANF(mass ratio of 50:50)decreases~10.8%.EMI shielding effectiveness(EMI SE)elevates to 41.0 dB(8.2–12.4 GHz);After the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 60:40),the strain to failure increases from 18.3±1.9%to 28.1±0.7%(~53.5%),the SE_(R)decreases~22.2%,and the corresponding EMI SE is 43.9 *** MoS_(2)also leads to a more efficient photothermal conversion performance(~45 to~55℃).Additionally,MXene/ANF–MoS_(2)composite films exhibit excellent electric heating performance,quick temperature elevation(15 s),excellent cycle stability(2,2.5,and 3 V),and long-term stability(2520 s).Combining with excellent mechanical performance with high MXene content,electric heating performance,and photothermal conversion performance,EMI shielding ternary MXene/ANF–MoS_(2)composite films could be applied in many industrial *** work broadens how to achieve a balance between mechanical properties and versatility of composites in the case of high-function fillers.

关键词： MXene-MoS_(2) Lubrication toughening EMI shielding Photothermal conversion Electric heating performance

Return to work in young and middle-aged colorectal cancer survivors:Factors influencing self-efficacy,fear,resilience,and financial toxicity

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World Journal of Gastroenterology 2025年第1期31卷 79-92页

作者： Dan Hu Yue Li Hua Zhang Lian-Lian Wang Wen-Wen Liu Xin Yang ming-Zhao Xiao hao-Ling Zhang Juan Li Department of Nursing The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Nursing National Clinical Research Center for Child Health and DisordersMinistry of Education Key Laboratory of Child Development and DisordersChildren’s Hospital of Chongqing Medical UniversityChongqing 400014China Department of Gastrointestinal Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Biomedical Science Advanced Medical and Dental InstituteUniversity Sains MalaysiaPenang 13200Malaysia Academic Affairs Office The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

BACKGROUND Return to work(RTW)serves as an indication for young and middle-aged colorectal cancer(CRC)survivors to resume their normal social ***,these survivors encounter significant challenges during their RTW ***,scientific research is necessary to explore the barriers and facilitating factors of returning to work for young and middle-aged CRC *** To examine the current RTW status among young and middle-aged CRC survivors and to analyze the impact of RTW self-efficacy(RTW-SE),fear of progression(FoP),eHealth literacy(eHL),family resilience(FR),and financial toxicity(FT)on their RTW *** A cross-sectional investigation was adopted in this *** September 2022 to February 2023,a total of 209 participants were recruited through a convenience sampling method from the gastrointestinal surgery department of a class A tertiary hospital in *** investigation utilized a general information questionnaire alongside scales assessing RTW-SE,FoP,eHL,FR,and *** analyze the factors that influence RTW outcomes among young and middle-aged CRC survivors,Cox regression modeling and Kaplan-Meier survival analysis were *** A total of 43.54%of the participants successfully returned to work,with an average RTW time of 100 *** regression univariate analysis revealed that RTW-SE,FoP,eHL,FR,and FT were significantly different between the non-RTW and RTW groups(P<0.05).Furthermore,Cox regression multivariate analysis identified per capita family monthly income,job type,RTW-SE,and FR as independent influencing factors for RTW(P<0.05).CONCLUSION The RTW rate requires further *** levels of RTW-SE and FR were found to significantly increase RTW among young and middle-aged CRC *** professionals should focus on modifiable factors,such as RTW-SE and FR,to design targeted RTW support programs,thereby facilitating their timely reintegration into mainstream society.

关键词： Return to work Colorectal neoplasms Return-to-work self-efficacy Fear of progression Family resilience Financial toxicity

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妊娠期慢性乙型肝炎55例

世界华人消化杂志 2010年第15期18卷 1602-1604页

作者：哈明昊黎小珊卢晓玲温庆辉张曼莉广东省东莞市人民医院感染科广东省东莞市523018

目的:分析妊娠期慢性乙型肝炎发病特点和临床特征.方法:回顾性分析55例妊娠期慢性乙型肝炎患者的临床资料,并与妊娠期乙型肝炎携带者(无症状妊娠组)及正常妊娠女性进行临床比较.结果:妊娠期慢性乙型肝炎发病集中于妊娠的中、晚期.与无... 详细信息

目的:分析妊娠期慢性乙型肝炎发病特点和临床特征.方法:回顾性分析55例妊娠期慢性乙型肝炎患者的临床资料,并与妊娠期乙型肝炎携带者(无症状妊娠组)及正常妊娠女性进行临床比较.结果:妊娠期慢性乙型肝炎发病集中于妊娠的中、晚期.与无症状妊娠组比较,慢乙型肝炎妊娠组患者肝功能损害表现为ALT、AST、TBIL及DBIL明显升高(210.2U/L±144.7U/L vs22.7U/L±11.6U/L;197.3U/L±113.8U/L vs19.1U/L±14.9U/L;64.9μmol/L±37.8μmol/L vs6.8μmol/L±5.8μmol/L;44.2μmol/L±23.8μmol/L vs4.8μmol/L±2.2μmol/L,均P<0.05),白蛋白、PTA降低(31.3G/L±7.3G/L vs35.8G/L±4.7G/L;66.4%±8.6%vs82.1%±8.7%,均P<0.05).患者的病毒学特征表现为HBeAg阳性和HBV DNA高滴度.结论:妊娠期慢性乙型肝炎的发生多集中于妊娠的中、晚期;临床类型以中、重度为主;HBeAg阳性和HBV DNA高滴度可作为妊娠期慢性乙型肝炎发生的预测指标.

关键词：妊娠期慢性乙型肝炎乙型肝炎病毒 E抗原

乙型肝炎病毒促进CTGF和TGF-β1在肝星状细胞中的表达

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世界华人消化杂志 2008年第9期16卷 924-928页

作者：哈明昊饶慧瑛刘峰潘孝本封波陈红松魏来北京大学肝病研究所

目的:研究转染乙型肝炎病毒(HBV)的HepG2.2.15细胞株在体外促进肝星状细胞中CTGF和TGF-β1的表达,进而探讨HBV促肝细胞纤维化的机制.方法:将HepG2和HepG2.2.15细胞株分别在体外与肝星状细胞(LX-2)共培养,以单独培养的肝星状细胞为对照组... 详细信息

目的:研究转染乙型肝炎病毒(HBV)的HepG2.2.15细胞株在体外促进肝星状细胞中CTGF和TGF-β1的表达,进而探讨HBV促肝细胞纤维化的机制.方法:将HepG2和HepG2.2.15细胞株分别在体外与肝星状细胞(LX-2)共培养,以单独培养的肝星状细胞为对照组.培养24,48,72 h后,以Real-time PCR定量检测肝星状细胞中CTGF和TGF-β1 mRNA的表达,以Western blot定量检测其蛋白表达结果:与对照组比较,在24、48、72 h时点,CTGF和TGF-β1 mRNA分别增高约1.7、4.2、9.6倍(P<0.01)和2.2、6.1、8.1倍(P<0.01),以72 h差异最为显著;而与HepG2细胞共培养实验组LX-2细胞CTGF和TGF-β1 mRNA在三个时间点分别增高约1.7、1.2、1.3倍(P<0.05)和2.7、1.9、2.1倍(P<0.05).CTGF和TGF-β1蛋白表达量分别增高约2.1、2.6、2.5倍(P<0.01)和1.7、3.3、3.1倍(P<0.01),以48 h差异最为显著:而与HepG2细胞共培养实验组LX-2细胞CTGF和TGF-β1蛋白表达量在三个时间点分别增高约1.6、1.1、0.9倍(P<0.05)和1.1、1.4、2.5倍(P<0.05).结论:与HepG2.2.15细胞株共培养后,肝星状细胞中肝纤维化相关因子的表达明显增强.体外实验证明HBV具有诱导肝细胞纤维化的重要作用.

关键词：乙型肝炎病毒肝纤维化细胞共培养结蒂组织生长因子转化生长因子β1

乙型肝炎病毒促进Ⅰ型胶原和Ⅲ型胶原在肝星状细胞中的表达

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世界华人消化杂志 2008年第18期16卷 2031-2035页

作者：哈明昊饶慧瑛刘峰潘孝本封波陈红松魏来北京大学人民医院肝病研究所

目的:研究转染HBV的HepG2.2.15细胞株在体外促进肝星状细胞中Ⅰ、Ⅲ型胶原的表达,进而探讨HBV促肝细胞纤维化的机制.方法:将HepG2和HepG2.2.15细胞株分别在体外与肝星状细胞共培养,以单独培养的肝星状细胞为对照组.取培养后24、48、72h... 详细信息

目的:研究转染HBV的HepG2.2.15细胞株在体外促进肝星状细胞中Ⅰ、Ⅲ型胶原的表达,进而探讨HBV促肝细胞纤维化的机制.方法:将HepG2和HepG2.2.15细胞株分别在体外与肝星状细胞共培养,以单独培养的肝星状细胞为对照组.取培养后24、48、72h3个时间点,以RT-PCR定量检测肝星状细胞中Ⅰ、Ⅲ型胶原mRNA的表达;以Western blot定量检测肝星状细胞中Ⅰ、Ⅲ型胶原蛋白的表达.结果:与对照组和与HepG2共培养的肝星状细胞比较,与HepG2.2.15共培养的肝星状细胞中Ⅰ、Ⅲ型胶原mRNA的表达明显增高,以72h差异最为显著(P<0.01);与HepG2.2.15共培养的肝星状细胞中Ⅰ、Ⅲ型胶原蛋白的表达也明显增高,以48h差异最为显著(P<0.01).结论:与HepG2.2.15细胞株共培养后,肝星状细胞中肝纤维化相关因子的表达明显增强,HBV具有诱导肝细胞纤维化的重要作用.

关键词：乙型肝炎病毒肝纤维化胶原纤维Ⅰ 胶原纤维Ⅲ

Kinetics of bainite-to-austenite transformation during continuous reheating in low carbon microalloyed steel

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International Journal of Minerals,Metallurgy and Materials 2013年第5期20卷 427-432页

作者： ming Chang hao Yu School of Materials Science and Engineering University of Science and Technology Beijing

A dilatometer was used to study the kinetics of bainite-to-austenite transformation in low carbon microalloyed steel with the initial microstructure of bainite during the continuous reheating process. The bainite-to-austenite trans- formation was observed to take place in two steps at low heating rate. The first step is the dissolution of bainite, and the second one is the remaining bainite-to-austenite transformation controlled by a dissolution process. The calculation result of the kinetics of austenite formation shows that the two steps occur by diffusion at low heating rate. However, at high heating rate the bainite-to-austenite transformation occurs in a single step, and the process is mainly dominated by shear. The growth rate of austenite reaches the maximum at about 835℃ at different heating rates and the growth rate of austenite as a function of temperature increases with the increase in heating rate.

关键词： low carbon steel microalloying bainite austenite phase transformations reheating kinetics

Calculation of the Exchange Interaction Constant Between the Rare-Earh and the Transition Metal Sub-lattices in R_(2)Fe_(17-x)M_(x)(M=Al or Ga)

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Chinese Physics Letters 2000年第6期17卷 444-445页

作者： hao Yan-ming Department of Physics Tianjin Normal UniversityTianjin 300074

A precise calculation of the exchange interaction constant JnT between the rare-earth sub-lattice and the transition metal sub-lattice in R_(2)Fe_(17-x)M_(x)(R:rare-earth,M=Al or Ga)compounds is *** calculated values for Tb_(2)Fe_(17-x)Ga_(x)(x=6 and 7)and Dy_(2)Fe_(17-x)Al_(x)(x=5,6,7 and 8)compounds are in excellent agreement with the values derived from the high-field measurement.

关键词： (x) measurement. rare

Investigation on UV-curing Reprocessable Thermosets Bearing Hindered Urea Bonds and Their Composites with Modified Zinc Oxide Nanoparticles

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Chinese Journal of Polymer Science 2024年第6期42卷 751-765页

作者： Jun-hao Zhou Li-ming Tang Key Laboratory of Advanced Materials of Ministry of Education of China Department of Chemical EngineeringTsinghua UniversityBeijing100084China

In this study,a series of hindered urea bond(HUB)containing polyurethane-urea methacrylate prepolymers and a none HUB containing polyurethane methacrylate prepolymer were prepared using isobornyl methacrylate as the reactive diluent via one-pot *** prepolymers were characterized fully by various ***,their thermosets were fabricated via UV curing in presence of a photo initiator,and their mechanical property and thermal behavior were investigated and *** from the none HUB containing thermoset,the HUB containing thermosets(defined as PUT)could be recycled and reprocessed by hot press under relatively mild conditions with high recovery ratio of mechanical ***,zinc oxide(ZnO)nanoparticles were modified with 3-(trimethoxysilyl)propyl methacrylate and the modified ZnO(defined as ZnO-TPM)was dispersed and polymerized into PUT matrix to prepare their *** influence of ZnO-TPM on the mechanical performance of the composites was evaluated,which indicated that the Young’s modulus and tensile strength increased gradually to the maximum values at ZnO-TPM content of 1 wt%and then *** composites also displayed good reprocessability with improved recovery ratio compared to the pure PUT *** addition,the composite materials exhibited strong UV absorption capacity,implying their potential application in the circumstance where UV-shielding was required.

关键词： Polyurethane-urea methacrylate Hindered urea bond ZnO nanoparticles Reprocessing UV curing

Close relative motion on distant retrograde orbits

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Chinese Journal of Aeronautics 2023年第3期36卷 335-356页

作者： Chihang YANG ming WANG hao ZhaNG University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Space Utilization Technology and Engineering Center for Space UtilizationChinese Academy of SciencesBeijing 100094China

Distant Retrograde Orbits(DROs)in the Earth-Moon system have great potential to support varieties of missions due to the favorable stability and orbital ***,the close relative motion on DROs should be analyzed to design formations to assist or extend the DRO ***,as the reference DROs are obtained through numerical methods,the close relative motions on DROs are non-analytical,which severely limits the design of relative *** this paper,a novel approach is proposed to construct the analytical solution of bounded close relative motion on *** linear dynamics of relative motion on DRO is established at *** preliminary forms of the general solutions are obtained based on the Floquet *** the general solutions are classified as different modes depending on their periodic components.A new parameterization is applied to each mode,which allows us to explore the geometries of quasi-periodic modes in *** each mode,the solutions are integrated as a uniform expression and their periodic components are expanded as truncated Fourier *** this way,the analytical bounded relative motion on DRO is *** on the analytical expression,the characteristics of different modes are comprehensively *** natural periodic mode is always located on the single side of the target spacecraft on DRO and is appropriate to be the parking orbits of the rendezvous and *** the basis of quasi-periodic modes,quasi-elliptical fly-around relative trajectories are designed with the assistance of only two impulses per *** fly-around formation can support observations to targets on DRO from multiple viewing *** the fly-around formation is validated in a more practical ephemeris model.

关键词： Distant retrograde orbits Ephemeris model Floquet theory Formation flight Relative motion Spacecraft Three-body problem Transfer singularity