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潍坊教育学院学报 2006年第3期19卷 13-15页

作者：李旭兰 mr. zhang rongbin（Translator）潍坊教育学院院办山东青州262500 不详

今年是红军长征胜利70周年。大力弘扬长征精神,就要立足我院育人目标,培养学生坚定的理想信念,激励学生刻苦学习,锻造学生的优秀品质;寓长征精神于日常的教学、管理中,激励学生传承长征精神,自觉立志成才。

关键词：长征精神理想信念优秀品质实践锻炼潍坊教育学院

适应时代要求做学习型教师——读朱永新教授《我的教育理想》有感

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潍坊教育学院学报 2006年第3期19卷 70-70,79页

作者：冯常玲高月庆 mr. zhang rongbin（Translator）潍坊教育学院山东青州262500 不详

《我的教育理想》一书向广大教师提出了读书学习的建议。作为一名学习型教师,应通过学习,更新知识,拓宽视野,提高综合素质,满足教师的职业需要和时代对教师的基本要求。

关键词：学习型教师时代要求读书学习朱永新《我的教育理想》

Numerical simulation on gas-solid flow during circulating fluidized roasting of bauxite by a computational particle fluid dynamics method

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Particuology 2024年第7期90卷 179-188页

作者： Chengming Xie rongbin Li Qijin Wei Fengqin Liu Hongliang Zhao Yongmin zhang Hong Yong Sohn State Key Laboratory of Green and Low-carbon Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China BGRIMM Technology Group Beijing 100160China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China Department of Materials Science and Engineering The University of UtahSalt Lake CityUT 84112USA

A full-cycle numerical simulation of a circulating fluidized bed(CFB)by the use of the computational particle fluid dynamics(CPFD)method has been *** effects of the presence or absence of the secondary air,different secondary air positions,and different secondary air ratios on the gas–solid flow characteristics were *** results show that the presence of the secondary air makes a core-annular structure of the velocity distribution of particles in the fluidized bed,which enhances the uniformity of particles’distribution and the stability of *** position and the ratio of the secondary air have a significant impact on the particle distribution,particle flow rate,and gas flow rate in the fluidized *** the secondary air position and ratio are optimal,the particles,particle flow rate,and air flow rate in the CFB are evenly distributed,the gas–solid flow state is good,and the CFB can operate stably.

关键词： Circulating fluidized bed CPFD method Secondary air position Secondary air ratio Gas–solid flow characteristics

Mechanism of slag pellets sticking on the wall of reduction pot in magnesium production by Pidgeon process

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Journal of Magnesium and Alloys 2024年第6期12卷 2397-2412页

作者： Jilei Xu Jinhui Liu Dong Guo Mao Chen Peixu Yang rongbin Li Shaojun zhang School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Province Industrial Technology Research Institute of Resources and Materials Zhengzhou UniversityZhengzhou 450001China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

In the preparation of magnesium by Pidgeon process,the phenomenon slag pellets sticking on the wall of reduction pot always appear,and the glaze sticking on the inner wall of the reduction pot is difficult to *** mechanism of this phenomenon is studied in this work by X-ray fluorescence spectrometer(XRF)measurement,electron probe microanalyzer scanning(EPMA)analysis,differential scanning calorimetry(DSC)analysis,and thermodynamic *** main components of the glaze are MgO,Ca_(12)Al_(14)F_(2)O_(32),CaF_(2),CaO,and a small amount of Ca_(4)Si_(2)O_(7)F_(2).The solid-liquid transition temperature of Ca_(12)Al_(14)F_(2)O_(32)and CaF_(2)is close to the production temperature of Pidgeon process,which leads to the bonding between the slag pellets and the pot *** loss of CaF_(2)in glaze layer will reduce the total amount of liquid phase and increase the temperature at which Ca_(12)Al_(14)F_(2)O_(32)is completely transformed into liquid phase,which causes glaze layer sticking on the inner wall of the reduction pot.

关键词： Pidgeon process Glaze Ca_(12)Al_(14)F_(2)O_(32) CaF_(2) Solid-liquid transition

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网络文化与图书馆相关问题的探讨

潍坊教育学院学报 2006年第3期19卷 105-108页

作者：王乃萍南家莲 mr. zhang rongbin （Translator）潍坊教育学院图书馆山东青州262500 不详

本文分析了网络文化的特点和优势,揭示了网络文化与图书馆之间的关系,对网络文化在图书馆建设中的作用作了探讨。

关键词：网络文化图书馆作用

Evaluating short-term and long-term liver fibrosis improvement in hepatitis C patients after DAA treatment

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Journal of Biomedical Research 2024年第5期38卷 464-472,I0001,I0002页

作者： Yifan Wang Xinyan Ma Yanzheng Zou Ming Yue Meiling zhang rongbin Yu Hongbo Chen Peng Huang Department of Infectious Disease Jurong Hospital Affiliated to Jiangsu UniversityJurongJiangsu 212400China Department of Epidemiology Center for Global HealthSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Department of Infectious Diseases the First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China

Despite achieving a high cure rate with the direct-acting antivirals(DAAs)in hepatitis C treatment,further research is needed to identify additional benefits of the DAA *** current study evaluated liver fibrosis improvement in 848 hepatitis C patients treated with DAAs,who also achieved sustained virologic *** the fibrosis-4(FIB-4)index,patients were categorized based on their baseline fibrosis levels,and the improvement in fibrosis was analyzed in both short-term(9-26 weeks)and long-term(≥36 weeks)*** results showed a significant decrease in the FIB-4 index,indicating an improvement in liver fibrosis,in 63.0%and 67.6%of the patients during the short-term and long-term follow-up,***-term improvement was associated with factors including ribavirin usage,blood cholinesterase levels,alanine transaminase levels,albumin levels,and the baseline FIB-4 index,while long-term improvement was associated with factors such as aspartate transaminase levels,total protein level,and the baseline FIB-4 *** current study emphasizes the importance of continuous assessment and post-treatment monitoring of liver fibrosis,which will provide crucial insights for enhancing patient care in hepatitis C management.

关键词： chronic hepatitis C sustained virologic response direct-acting antivirals liver fibrosis

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等离子喷涂YSZ热障涂层的工艺研究

表面技术 2024年第7期53卷 217-229页

作者：李荣斌邢悦张志玺何峰上海理工大学材料与化学学院上海200093 上海电机学院材料学院上海201306

目的优化大气等离子喷涂工艺,提高热障涂层的耐腐蚀性能与热循环寿命。方法设计正交试验,制备出不同工艺参数的YSZ涂层。用共聚焦显微镜、X射线衍射仪、能谱分析仪对涂层的表面粗糙度、表面与截面形貌、元素组成与分布进行表征,用Image... 详细信息

目的优化大气等离子喷涂工艺,提高热障涂层的耐腐蚀性能与热循环寿命。方法设计正交试验,制备出不同工艺参数的YSZ涂层。用共聚焦显微镜、X射线衍射仪、能谱分析仪对涂层的表面粗糙度、表面与截面形貌、元素组成与分布进行表征,用ImageJ软件分析涂层的孔隙。根据试验数据优化工艺参数,对比分析工艺优化前后涂层的耐腐蚀性与热循环寿命。对涂层进行热震水淬试验,分析涂层的热震寿命与失效行为。结果不同工艺下制备的涂层在孔隙、耐熔盐腐蚀与热循环寿命方面存在明显差异,工艺参数W3X3Y1Z3组合为优化出的喷涂工艺。采用优化后工艺所制备的涂层TBC-1,孔隙率为9.65%,平均孔隙尺寸为6.18μm^(2),未观察到明显的大孔与裂纹。涂层表面粗糙度为3.48μm,粉末熔化状态较好。热腐蚀之后,涂层截面熔盐元素V的质量分数为2.03%,无熔盐积聚现象。涂层经20次热腐蚀与热冲击联合试验后,质量损失率为0.25%,表面完整,无明显剥落。TBC-1在热震试验中的失效形式为涂层大面积剥落,失效次数为172次。结论等离子喷涂的工艺参数对涂层的综合性能有重要影响,涂层中较大的裂纹和孔隙可作为熔盐的渗透途径,加速涂层的腐蚀,同时使热循环寿命变差。经优化后工艺制备的涂层,内部孔隙分布均匀,且平均孔隙尺寸较小,表现出良好的耐腐蚀性与热循环寿命。涂层中热生长氧化物(TGO)的生长应力、陶瓷层与黏结层的热失配应力是涂层中裂纹扩展和涂层失效的重要原因。

关键词：等离子喷涂 YSZ热障涂层工艺优化孔隙热腐蚀热循环寿命

氮气流量对VNbMoTaWN_(x)薄膜作为PEMFC不锈钢双极板改性层性能的影响

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表面技术 2024年第6期53卷 90-98页

作者：李荣斌黄从发周滔张如林上海理工大学材料与化学学院上海200093 上海电机学院材料学院上海201306

目的降低SS316L表面的接触电阻,提高耐腐蚀性能。方法采用非平衡场磁控溅射离子镀技术在SS316L不锈钢表面制备VNbMoTaW和不同氮气流量的VNbMoTaWN_(x)薄膜。使用场发射扫描电镜、XRD衍射仪、XPS光电子能谱仪、电化学工作站、接触电阻测... 详细信息

目的降低SS316L表面的接触电阻,提高耐腐蚀性能。方法采用非平衡场磁控溅射离子镀技术在SS316L不锈钢表面制备VNbMoTaW和不同氮气流量的VNbMoTaWN_(x)薄膜。使用场发射扫描电镜、XRD衍射仪、XPS光电子能谱仪、电化学工作站、接触电阻测试装置,研究了改性涂层的组成和结构对接触电阻和耐腐蚀性能的影响。结果扫描电子显微镜结果表明,所有薄膜表面致密且连续、与基体结合良好。随着氮气流量的增加,氮化物相逐渐增多、柱状晶结构减少、薄膜更加致密紧凑。XRD结果表明,未通氮气的高熵合金薄膜具有高熵合金体心立方结构,并沿(110)晶面方向生长。随着氮气流量的增加,氮化物相逐渐增多,薄膜晶体结构开始从体心立方结构转变为面心立方结构。结合XPS分析结果可知,VNbMoTaWN_(x)薄膜表面主要由金属氮化物和少量高熵合金BCC相组成,并且随着氮气流量的增加,金属氮化物相逐渐增多。与单层VNbMoTaW薄膜相比,VNbMoTaWN_(x)薄膜具有更好的耐腐蚀性和导电性能。氮流量为12mL/min的高熵合金氮化物薄膜具有最优异的综合性能。表面改性后的薄膜接触电阻大幅度降低,在1.4MPa的压力下,与碳纸的接触电阻仅为12.2 mΩ·cm^(2),接近美国能源部(DOE)的技术目标。由动电位极化曲线测得VNbMoTaWN_(x)-12mL/min在模拟PEMFC阴极环境下的腐蚀电流密度为0.040μA/cm^(2),与SS316L基体相比,薄膜的耐腐蚀性得到了很大提升。在0.6 V恒电位模拟阴极环境下,VNbMoTaWN_(x)-12 mL/min的电流密度稳定在1.01μA/cm^(2),接近美国能源部1μA/cm^(2)的目标。结论VNbMoTaW和不同氮气流量的VNbMoTaWN_(x)薄膜能显著提高SS316L基体的耐腐蚀性和导电性能。

关键词：质子交换膜燃料电池双极板高熵合金薄膜耐腐蚀性接触电阻

Host plant traits play a crucial role in shaping the composition of epiphytic microbiota in the arid desert,Northwest China

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Journal of Arid Land 2024年第5期16卷 699-724页

作者： zhang Jun zhang Yuanming zhang Qi State Key Laboratory of Desert and Oasis Ecology Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsXinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Biodiversity Conservation and Application in Arid Lands Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Xinjiang Field Scientific Observation Research Station of Tianshan Wild Fruit Forest Ecosystem Yili Botanical GardenXinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China College of Life Sciences Shihezi UniversityShihezi 832003China

Phyllosphere microorganisms are a crucial component of environmental microorganisms,highly influenced by host characteristics,and play a significant role in plant health and ***,the impact of host characteristics on shaping phyllosphere microbial communities of plants with different life forms remains *** high-throughput sequencing technology,this study analyzed the diversity and community composition of phyllosphere epiphytic microorganisms(e.g.,bacteria and fungi)of various plant life forms in the hinterland of the Gurbantunggut Desert,Northwest *** annotation of prokaryotic taxa(FAPROTAX)and fungi function guild(FUNGuild)were employed to assess the ecological functions of microorganisms and to investigate the role of stochastic and deterministic processes in shaping phyllosphere microbial *** showed a diverse array of phyllosphere epiphytic microorganisms in the desert plants,with Proteobacteria,Cyanobacteria,and Actinobacteriota dominating bacterial community,while Ascomycota and Basidiomycota were prevalent in fungal *** across different plant life forms highlighted distinct microbial communities,indicating strong filtering effects by plant *** prediction identified intracellular parasites(accounting for 27.44%of bacterial community abundance),chemoheterotrophy(10.12%),and phototrophy(17.41%)as the main functions of epiphytic bacteria on leaves of different life form *** prediction indicated that phyllosphere epiphytic fungi primarily served as Saprotrophs(81.77%),Pathotrophs(17.41%),and Symbiotrophs(0.82%).Co-occurrence network analysis demonstrated a predominance of positive correlations among different microbial ***-Crick dissimilarity index analysis revealed that deterministic processes predominantly influenced phyllosphere bacterial and fungal community *** partitioning analysis and random forest modeling suggested that pla

关键词： phyllosphere epiphytic bacteria phyllosphere epiphytic fungi community structure community diversity functional diversity plant life form plant functional traits

Synthetic fungal melanin UV absorbers

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Science China Chemistry 2024年第9期67卷 3098-3110页

作者： Chao Wang Rong zhang Jianhua zhang Xueqian zhang Hengjie zhang Huan Cao Zhen Yang Yiwen Li College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China Department of Radiology Huaxi MR Research CenterFunctional and Molecular Imaging Key Laboratory of Sichuan ProvinceNational Clinical Research Center for GeriatricsWest China HospitalSichuan UniversityChengdu 610041China

Agents with robust ultraviolet(UV)absorption capabilities play a vital role in safeguarding organisms and inorganic materials from UV ***,the synthetic procedures towards these UV absorbers are usually lengthy and complicated,accompanied by undesirable side reactions and the generation of toxic *** nature,allomelanin,a class of melanins variant found in melanized fungi near the Chernobyl nuclear power plant,plays crucial roles in the cell wall of melanized fungi,offering resistance to harsh external environments and promising UV resistance ***,allomelanin can be rapidly biosynthesized via the polymerization of 1,8-dihydroxynaphthalene in presence of enzymes in *** by this,we report here a green enzymatic polymerization strategy to efficiently and eco-friendly synthesize polydihydroxynaphthalene(PDHN)-based artificial allomelanin nanoparticles(NPs)with interesting *** calculations and experimental results demonstrated that the PDHN NPs exhibited excellent UVabsorption capacity,surpassing another widely used artificial melanin,polydopamine(PDA).Moreover,the light absorption mechanism of PDHN NPs was systematically elucidated for the first ***,the PDHN NPs were incorporated with polyvinyl alcohol(PVA)to create an anti-aging composite film with significantly enhanced UV shielding *** potential of these composite films in safeguarding plants from UV damage was meticulously ***,these PDHN NPs were first found to produce hydroxyl radicals(·OH)under UV irradiation,offering antibacterial properties that expand their potential applications.

关键词： melanin artificial allomelanin nanoparticles green synthesis UV absorption antibacterial