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Strengthening and control of second-phase particle precipitation in ferritic/austenitic/martensitic heat-resistant alloys:a review

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Journal of Iron and Steel Research International 2024年第1期31卷 3-23页

作者： Xue-cheng Peng Han-jie Guo Xin-fang Zhang Yi-wa Luo Ye Sun Jing Guo rong-guang yang Xiao-dan Zheng School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials University of Science and Technology Beijing(USTB)Beijing100083China Beijing Shougang Gitane New MATERIALS Co. Ltd.Beijing102206China

Heat-resistant alloys with excellent mechanical properties are widely used in various fields,and further improvement in their properties is essential to meet the requirements in new-generation advanced supercritical boilers,nuclear reactors,superheaters,and other new materials *** effectively enhance the comprehensive performance of heat-resistant alloys,second-phase particle strengthening has been widely studied,and in the face of different service envi-ronments of advanced heat-resistant steels,the selection of suitable second-phase particles is essential to maximize the performance of these *** this end,three major types of reinforcing phases in heat-resistant alloys such as carbides,rare earth oxides,and intermetallic compounds are summarized.A comparative analysis of the precipitation behavior of the reinforcing phases with different types as well as the risks and means of controlling their use in service,is *** parameters for the application of various types of second-phase particles in heat-resistant alloys are provided to support the design and preparation of new ultrahigh-performance heat-resistant alloys.

关键词： Heat-resistant alloy Second-phase particle Carbide Rare earth oxide Intermetallic compound Strengthening

PREPARATION OF FINE α-AL_2O_3 BY THERMAL DECOMPOSITION OF HYDRAZINE-CONTAINING ALUMINUM SALT

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Chinese Chemical Letters 1990年第3期1卷 277-278页

作者： Jie Da WU guang rong yang Dept.of Chemistry,TongJi University,Shanghai 200029

A new method for preparing fine -Al_2O_3 by thermal decomposition from hydrazine-containing aluminum salt was *** process of the thermal decomposition of the hydrazine-containing aluminum salt was investigated by thermal analysis(TG and DTA)and the thermally decomposed products were studied by S.E.M and X-ray *** result indicated the particles of -Al_2O_3 obtained in this way at 12500℃ were<1um in size.

关键词： In AL2O3 BY THERMAL DECOMPOSITION OF HYDRAZINE-CONTAINING ALUMINUM SALT PREPARATION OF FINE

Outcomes and complications of operative versus non-operative treatment of acute Achilles tendon rupture： a meta-analysis

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Chinese Medical Journal 2011年第23期124卷 4050-4055页

作者： ZHAO Hong-mou YU guang-rong yang Yun-feng ZHOU Jia-qian Ashwin Aubeeluck Department of Orthopaedic Surgery Tongji Hospital of Tongji University Shanghai 200065 China

Background There is lack of consensus regarding the best option for the treatment of acute Achilles tendon rupture- operation or non-operation. The purpose of this meta-analysis was to identify and summarize the randomized controlled trials comparing the operative and non-operative lines of treatment of acute Achilles tendon ruptures. Methods We searched multiple databases in English （including EMBASE, PubMed, and OVID） and in Chinese （including CNKI, WANFANG, and VIP）, as well as reference lists of articles and main orthopaedic and sports medical journals. Two reviewers independently screened the studies for eligibility, evaluated the quality and extracted data from eligible studies, with confirmation by cross-checking. The major results and conclusions were concluded, and the different complication rates and functional outcomes were compared. Meta-analysis was processed by RevMan 5.0 software. Results Eight randomized controlled trials （RCTs） involving 777 patients met the inclusion criteria. The rerupture rate in non-operative group was significantly higher （Z=3.33, P 〈0.01）. However, the moderate （Z--4.27, P 〈0.01） and minor （Z--5.59, P 〈0.01） complication rate in the operative group were significantly higher. No significant difference in comparing the major and total complication rates. The return to work time in the operative group was shorter （Z=2.65, P 〈0.01）. The inability to return to previous level sporting rate and ankle joint decreased range of motion （ROM） rate showed no significant difference in the two groups. Other functional outcomes were similar in the two groups. Conclusions Operation could significantly reduce the risk of rerupture; however, it was associated with a higher risk of other complications. The functional outcomes were similar in two treatment methods except an earlier return to work in patients treated operatively. Thus operative treatment is preferable for patients with good physical condition. Non-operative treatment is an acceptab

关键词： Achilles tendon injury operation, conservative complication meta-analysis

Near-infrared organic photosensitizers with aggregation-induced emission and switchable fluorescence for fungal infection therapy

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Science China Chemistry 2025年

作者： Xinzhe yang Zixuan Huang Keke Ding Huili yang Lirong Wang Qing Xia rong Hu guang Shi Bingjia Xu Anjun Qin School of Chemistry South China Normal University State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates Center for Aggregation-Induced Emission AIE Institute South China University of Technology Department of Urology The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College) School of Chemistry and Chemical Engineering University of South China

The development of near-infrared (NIR) photosensitizers with aggregation-induced emission (AIE) properties,switchable luminescence colors,and satisfactory photodynamic therapy (PDT) effects on the treatment of fungal infection is of great importance but very ***,two ionic organic luminogens are constructed by employing diphenylamine,diphenylacrylonitrile/1,2-diphenylethene,and methylated quinoline cation as building *** is found that the resulting compounds TCQF and TQF show apparent AIE properties and produce intense fluorescence with high photoluminescence quantum yields of up to 31.2%in the solid *** the meantime,their emission colors can be switched between red and NIR and in the NIR region by mechanical force and solvent vapor,respectively,thereby enabling remarkable and reversible mechanochromism with emission variations of up to 104 *** excitingly,TCQF and TQF can efficiently generate ROS under the illumination of white light and show excellent antimicrobial activities and satisfactory PDT *** by the unique anti-fungus properties,TCQF is employed as a biocompatible NIR photosensitizer for treating wound infection with ***,and apparent PDT effects are *** work provides a new direction for the development of multifunctional NIR materials with AIE properties.

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匙吻鲟致病性豚鼠气单胞菌的分离鉴定和致病性研究

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中国兽医杂志 2016年第12期52卷 89-92页

作者：韦阳道易弋梁建荣罗福广杨军黄杰广西科技大学生物与化学工程学院广西柳州545006 柳州市鱼家乐饲料有限公司广西柳州545002 柳州市渔业技术推广站广西柳州545006

为了确定匙吻鲟发病的原因,从患病匙吻鲟的表皮组织中分离病原菌,对其进行形态学观察、生理生化试验和16S r DNA基因的扩增并经序列分析构建系统发育树,同时测定该菌株的致病能力和对药物的敏感性,结果表明,该菌株为豚鼠气单胞菌(Aeromo... 详细信息

为了确定匙吻鲟发病的原因,从患病匙吻鲟的表皮组织中分离病原菌,对其进行形态学观察、生理生化试验和16S r DNA基因的扩增并经序列分析构建系统发育树,同时测定该菌株的致病能力和对药物的敏感性,结果表明,该菌株为豚鼠气单胞菌(Aeromonas caviae)。人工感染试验结果显示,分离菌株对匙吻鲟具有很强的致病性,并同时对禾花鲤和罗非鱼也有较强的致病性。药物敏感结果显示,分离菌株对磺胺二甲嘧啶、多黏菌素B、氟苯尼考等5种药物完全耐药,对左氧沙星、链霉素、恩若沙星等10种药物的敏感性较强。

关键词：匙吻鲟分离鉴定豚鼠气单胞菌 16S rDNA

采用Y/△变换扩大永磁同步电动机恒转矩调速范围的矢量控制系统研究

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电气开关 2017年第5期55卷 67-71页

作者：石凯王榕生杨光福州大学电气工程与自动化学院福建福州350116

本文提出了采用Y/△变换扩大永磁同步电动机恒转矩调速范围的方法,分析了Y/△变换能够扩大永磁同步电动机恒转矩调速范围的数学原理,搭建了基于矢量控制的Y/△变换系统的Matlab/Simulink模型,以及以TMS320F2812为控制核心的实验平台。... 详细信息

本文提出了采用Y/△变换扩大永磁同步电动机恒转矩调速范围的方法,分析了Y/△变换能够扩大永磁同步电动机恒转矩调速范围的数学原理,搭建了基于矢量控制的Y/△变换系统的Matlab/Simulink模型,以及以TMS320F2812为控制核心的实验平台。仿真和实验都验证了采用Y/△变换矢量控制方法扩大永磁同步电动机的恒转矩调速范围的可行性,并且显著提高了电机的功率密度。

关键词：永磁同步电动机矢量控制 Y/A变换恒转矩调速

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产生物表面活性剂菌种的一种快速筛选模型

微生物学通报 2004年第3期31卷 55-58页

作者：宁长发沈薇孟广荣杨树林南京理工大学化工学院南京210094

利用生物表面活性剂具有溶血性和在产生过程中能使蓝色凝胶平板变色等特性,建立了产生物表面活性剂菌种的快速筛选模型。模型用于从采自油田和炼厂的土样和水样中筛选生物表面活性剂产生菌,选出12株能产生物表面活性剂的微生物,其中1株... 详细信息

利用生物表面活性剂具有溶血性和在产生过程中能使蓝色凝胶平板变色等特性,建立了产生物表面活性剂菌种的快速筛选模型。模型用于从采自油田和炼厂的土样和水样中筛选生物表面活性剂产生菌,选出12株能产生物表面活性剂的微生物,其中1株糖脂产量为6.5g/L,产生的糖脂配成0.5％水溶液,能在25℃将水的表面张力从71.3mN/m降到30.5mN/m。

关键词：生物表面活性剂菌种筛选模型

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原子吸收法测定金银花中铜的不确定度分析

食品研究与开发 2017年第7期38卷 110-114页

作者：辜忠春姚胜海杨柳李光荣杨志斌李爱华湖北省林业科学研究院国家林业局林产品质量检验检测中心(武汉)湖北武汉430075 湖北省林业科学研究院鹤峰森林药材研究所湖北恩施445800

建立火焰原子吸收光谱法测定金银花中铜含量的不确定度评定方法。通过分析试验过程,确立数学模型,识别各不确定度分量,计算合成标准不确定度和扩展不确定度。结果表明,金银花中铜含量测定结果为(1.6±0.2)mg/kg,k=2;影响金银花中铜含量... 详细信息

建立火焰原子吸收光谱法测定金银花中铜含量的不确定度评定方法。通过分析试验过程,确立数学模型,识别各不确定度分量,计算合成标准不确定度和扩展不确定度。结果表明,金银花中铜含量测定结果为(1.6±0.2)mg/kg,k=2;影响金银花中铜含量测量不确定度的最大因素是由拟合标准曲线求铜含量产生。该评定模型可为火焰原子吸收光谱法的测量不确定度评估提供参考。

关键词：不确定度金银花铜火焰原子吸收光谱法

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紫胶虫的生物学研究

昆虫学报 1984年第1期27卷 70-80页

作者：欧炳荣洪广基杨星池王元德廖定熹中国林业科学研究院紫胶研究所中国科学院动物研究所

紫胶虫Laccifer lacca(Kerr)Targ.在云南自然分布区一年发生两代,各世代有涌散、固定、泌胶、泌蜡和排泄蜜露等活动。由于幼虫在饥饿状态下的存活期较短,迁移能力较差,必须及时实行人工放养和科学管理,才能获得紫胶高产。本文报道了紫... 详细信息

紫胶虫Laccifer lacca(Kerr)Targ.在云南自然分布区一年发生两代,各世代有涌散、固定、泌胶、泌蜡和排泄蜜露等活动。由于幼虫在饥饿状态下的存活期较短,迁移能力较差,必须及时实行人工放养和科学管理,才能获得紫胶高产。本文报道了紫胶虫各世代的泌胶量、生殖力和性比,并提出发展紫胶生产的建议。

关键词：紫胶虫