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Nb含量对X80管线钢环焊接头热影响区韧性的影响

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材料热处理学报 2023年第10期44卷 204-214页

作者：王浩周家林贾书君张鹤松冯庆善李少坡戴联双雷灵修武汉科技大学省部共建耐火材料与冶金国家重点实验室湖北武汉430081 钢铁研究总院工程用钢研究所北京100081 国家石油天然气管网集团有限公司北京100013 首钢集团有限公司技术研究院北京100043

采用热膨胀仪、光学显微镜、扫描电镜和透射电镜等研究了不同Nb含量对X80管线钢环焊接头热影响区中不同位置的显微组织、大角度晶界分布及韧性的影响。结果表明:高Nb钢(0.055%Nb)中较多固溶的Nb降低了γ→α的转变温度,促进了粒状贝氏... 详细信息

采用热膨胀仪、光学显微镜、扫描电镜和透射电镜等研究了不同Nb含量对X80管线钢环焊接头热影响区中不同位置的显微组织、大角度晶界分布及韧性的影响。结果表明:高Nb钢(0.055%Nb)中较多固溶的Nb降低了γ→α的转变温度,促进了粒状贝氏体形成。0.055%Nb钢中的临界粗晶热影响区(ICCGHAZ)及亚临界粗晶热影响区(SCGHAZ)韧性显著恶化。ICCGHAZ韧性降低的原因是原奥氏体晶界上形成尺寸较大的链状M/A组元所致,而SCGHAZ则是由于有效晶粒尺寸变大、显微组织中大角度晶界数量降低,以及贝氏体板条束边界上尺寸较大的M/A组元所致。较高的合金含量引起的亚稳奥氏体中碳含量升高是导致0.055%Nb试验钢韧性降低的主要原因。

关键词： X80管线钢环焊接头热影响区 M/A组元韧性

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伴听神经病表现的乙基丙二酸尿症一例

中华耳鼻咽喉头颈外科杂志 2008年第5期43卷 394-394页

作者：周佳霖罗仁忠广州市儿童医院耳鼻咽喉科 510120

患儿女，11个月。因发育迟缓，站立不稳等类似脑瘫症状于2007年3月18日就诊于我院神经康复科。患儿为足月剖腹产，无黄疸史，无窒息史，出生体重3kg，否认有耳聋家族史。母乳喂养，3个月开始出现吐奶，有时呈喷射状。4个月开始出现腹泻... 详细信息

患儿女，11个月。因发育迟缓，站立不稳等类似脑瘫症状于2007年3月18日就诊于我院神经康复科。患儿为足月剖腹产，无黄疸史，无窒息史，出生体重3kg，否认有耳聋家族史。母乳喂养，3个月开始出现吐奶，有时呈喷射状。4个月开始出现腹泻，每天5～10次，呈泡沫样。5个月时，因不明原因呕吐，腹泻伴眼球震颤入院治疗，发现其尿中乙基丙二酸含量显著升高，血清肉碱水平降低，酯化肉碱比例增高，确诊为乙基丙二酸尿症。确诊后接受饮食、药物与康复治疗。

关键词：伴听神经病乙基丙二酸尿症脑瘫症治疗方法

不同Ni60-SiC比例及厚度等离子熔覆层的组织及性能

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材料保护 2010年第11期43卷 53-55页

作者：潘成刚王华昌王洪福周家林武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室湖北武汉430081 武汉理工大学材料科学与工程学院湖北武汉430070

为了提高热锻模具的使用寿命,以W6Mo5Cr4V2为模具钢,在其表面通过等离子熔覆制备了Ni60-SiC金属陶瓷层。用X射线衍射仪对不同Ni60-SiC配比及厚度的熔覆层进行了物相鉴定;用光学显微镜对熔覆层的显微组织进行了分析,用维氏硬度计测定了... 详细信息

为了提高热锻模具的使用寿命,以W6Mo5Cr4V2为模具钢,在其表面通过等离子熔覆制备了Ni60-SiC金属陶瓷层。用X射线衍射仪对不同Ni60-SiC配比及厚度的熔覆层进行了物相鉴定;用光学显微镜对熔覆层的显微组织进行了分析,用维氏硬度计测定了熔覆层的显微硬度。结果表明:熔覆层厚度为3mm、Ni60-25% SiC混合粉末所得熔覆层具有最好的冶金结合和最佳的显微硬度。

关键词：等离子熔覆 Ni60-SiC复合涂层 W6Mo5Cr4V2钢显微组织显微硬度结合强度

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不同干旱程度对夏玉米生长及产量的影响

节水灌溉 2017年第2期 1-4,8页

作者：王峰李萍熊昱陈家宙林丽蓉华中农业大学资源与环境学院/农业部长江中下游耕地保育重点实验室武汉430070

连续两年在遮雨条件下,研究了不同程度干旱对夏玉米不同生育期地上部生长和根系分布的影响,结果表明:夏玉米产量对干旱最敏感,其次是叶面积、株高和根系数量,作物茎粗对干旱不敏感。连续干旱不超过12 d有利于作物生长,否则不利于作物生... 详细信息

连续两年在遮雨条件下,研究了不同程度干旱对夏玉米不同生育期地上部生长和根系分布的影响,结果表明:夏玉米产量对干旱最敏感,其次是叶面积、株高和根系数量,作物茎粗对干旱不敏感。连续干旱不超过12 d有利于作物生长,否则不利于作物生长。夏玉米生长前期遇到干旱较前后期干旱的减产风险更大,而作物根系响应可能是干旱减产的原因之一。调整作物种植时间和促进根系下扎将是缓解南方红壤区季节性干旱危害的有效措施。

关键词：季节性干旱产量生育期作物需水规律

Mechanism of action of linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

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Traditional Medicine Research 2025年第2期10卷 65-76页

作者： Huan Pei Ren-lin Li Xin-Ran Song Qian-Qian Wan Yu-Ming Wang Han-zhou Li Wei-Quan Xu jia-Bao Liao Wei-Bo Wen Jing Miao Huan-Tian Cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle

Grid-Connected/Islanded Switching Control Strategy for Photovoltaic Storage Hybrid Inverters Based on Modified Chimpanzee Optimization Algorithm

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Energy Engineering 2025年第1期122卷 265-284页

作者： Chao zhou NarisuWang Fuyin Ni Wenchao Zhang School of Electrical and Information Engineering Jiangsu University of TechnologyChangzhou213001China jiangsu Key Laboratory of Power Transmission&Distribution Equipment Technology Jiangsu University of TechnologyChangzhou213001China

Uneven power distribution,transient voltage,and frequency deviations are observed in the photovoltaic storage hybrid inverter during the switching between grid-connected and island *** response to these issues,this paper proposes a grid-connected/island switching control strategy for photovoltaic storage hybrid inverters based on the modified chimpanzee optimization *** proposed strategy incorporates coupling compensation and power differentiation elements based on the traditional droop ***,it combines the angular frequency and voltage amplitude adjustments provided by the phase-locked loop-free pre-synchronization control *** pre-synchronization is achieved by regulating the virtual current to zero and aligning the photovoltaic storage hybrid inverter with the grid ***,two novel operators,learning and emotional behaviors are introduced to enhance the optimization precision of the chimpanzee *** operators ensure high-precision and high-reliability optimization of the droop control parameters for photovoltaic storage hybrid inverters.A Simulink model was constructed for simulation analysis,which validated the optimized control strategy’s ability to evenly distribute power under load *** strategy effectively mitigated transient voltage and current surges during mode ***,seamless and efficient switching between gridconnected and island modes was achieved for the photovoltaic storage hybrid *** enhanced energy utilization efficiency,in turn,offers robust technical support for grid stability.

关键词： Photovoltaic storage hybrid inverters modified chimpanzee optimization algorithm droop control seamless switching

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao zhou Xiongbin Luo Hang Li Shan Guo Zhuang Tong Xiaotao zhou Xu Li Zhaohui Hou Shuquan Liang Guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Solvation

儿童chirp听性脑干反应与行为测听的相关性

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中华耳鼻咽喉头颈外科杂志 2009年第3期44卷 188-191页

作者：王小亚罗仁忠蓝军温瑞金邹宇周佳霖广州市儿童医院耳鼻咽喉科 510120 佛山市听觉语言康复中心

目的采用chirp信号作为声刺激进行听性脑干反应（ABR）测试，观察chirpABR阈值与行为测听的相关性，探讨chirpABR作为儿童临床客观听力评估的可行性。方法选择2007年8月至9月佛山市听觉语言康复中心的听力障碍儿童和广卅I市儿童医院听... 详细信息

目的采用chirp信号作为声刺激进行听性脑干反应（ABR）测试，观察chirpABR阈值与行为测听的相关性，探讨chirpABR作为儿童临床客观听力评估的可行性。方法选择2007年8月至9月佛山市听觉语言康复中心的听力障碍儿童和广卅I市儿童医院听力门诊的正常听力儿童共22例（共35耳）作为研究对象，分别进行行为测听和chirpABR测试，并对chirpABR反应阈和行为测听阈值进行Pearson相关性分析。结果22例接受测试儿童中男14例，女8例，年龄3．3～6．5岁，平均年龄4．8岁。纳入研究的35耳中，正常听力6耳，听力损失轻度2耳、中度4耳、重度10耳、极重度13耳。行为测听0．5、1、2、4kHz平均听阈与chirpABR阈值，0．5kHz听阈与L—chirpABR阈值，1—4kHz平均听阈与U—chirpABR阈值之间的相关系数分别为0．939，0．900及0．930，P值均〈0．05。结论chirpABR作为一种客观测听技术，能够较好地反映儿童的听力水平，有希望应用到临床工作中。

关键词：诱发电位听觉脑干测听法听阈儿童

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45钢低温区热变形行为研究

钢铁 2014年第10期49卷 62-65,75页

作者：周家林史密张陪毅杨光宇余茹代元武汉科技大学钢铁冶金及资源利用省部共建教育部重点试验室湖北武汉430081 武汉钢铁股份有限公司热轧厂湖北武汉430080

利用Gleeble-1500热模拟试验机研究了不同变形条件对45钢低温区热变形行为的影响。试验结果表明:峰值应力随变形温度的降低和应变速率的提高而增大;当应变速率ε≥0.01s-1、变形温度t<500℃时,发生动态回复;当应变速率ε≤1s-1、变形温... 详细信息

利用Gleeble-1500热模拟试验机研究了不同变形条件对45钢低温区热变形行为的影响。试验结果表明:峰值应力随变形温度的降低和应变速率的提高而增大;当应变速率ε≥0.01s-1、变形温度t<500℃时,发生动态回复;当应变速率ε≤1s-1、变形温度t≥500℃时,发生动态再结晶。在Sellars-Tegart方程的基础上,建立了45钢低温区加工硬化-动态回复、动态再结晶2阶段流变应力模型;根据试验结果计算拟合了模型中各参数。采用建立的流变应力模型成功预测了动态回复、动态再结晶型应力-应变曲线。利用上述模型对45钢中厚板轧后低温工业热矫直的矫直力进行了预测,其结果与实测值吻合良好。

关键词： 45钢低温热变形动态回复动态再结晶流变应力