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Minimum secondary aberration fractional factorial split-plot designs in terms of consulting designs

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Science China Mathematics 2006年第4期49卷 494-512页

作者： Al mingyao zhang Runchu Key Laboratory of Pure and Applied Mathematics School of Mathematical Sciences Peking University Beijing 100871 China Key Laboratory of Pure Mathematics and Combinatorics and School of Mathematical Sciences Nankai University Tianjin 300071 China

It is very powerful for constructing nearly saturated factorial designs to characterize fractional factorial (FF) designs through their consulting designs when the consulting designs are small. Mukerjee and Fang employed the projective geometry theory to find the secondary wordlength pattern of a regular symmetrical fractional factorial split-plot (FFSP) design in terms of its complementary subset, but not in a unified form. In this paper, based on the connection between factorial design theory and coding theory, we obtain some general and unified combinatorial identities that relate the secondary wordlength pattern of a regular symmetrical or mixed-level FFSP design to that of its consulting design. According to these identities, we further establish some general and unified rules for identifying minimum secondary aberration, symmetrical or mixed-level, FFSP designs through their consulting designs.

关键词： coding theory, consulting design, minimum secondary aberration, fractional factorial split-plot design, projective geometry, wordlength pattern.

水性抗氧剂组成以及含量对ASA树脂性能的影响

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中国塑料 2024年第3期38卷 73-78页

作者：刘孟恩汤千熠张明耀刘伯军长春工业大学化学工程学院长春130012

采用乳液聚合法制备了核壳比为6/4的ASA核壳接枝共聚物胶乳,系统地研究了水性抗氧剂的组成以及含量对ASA接枝共聚物热氧老化性能的影响,并采用熔融共混法制备ASA树脂,探究了水性抗氧剂的组成以及含量对ASA树脂力学性能、表观性能的影响... 详细信息

采用乳液聚合法制备了核壳比为6/4的ASA核壳接枝共聚物胶乳,系统地研究了水性抗氧剂的组成以及含量对ASA接枝共聚物热氧老化性能的影响,并采用熔融共混法制备ASA树脂,探究了水性抗氧剂的组成以及含量对ASA树脂力学性能、表观性能的影响。结果表明,水性抗氧剂的组成CPL/DLTP为2/3时,其ASA接枝共聚物的热氧老化性能最优;随着水性抗氧剂含量的增加,ASA接枝共聚物的氧化诱导期显著增长;水性抗氧剂的加入量超过1%以后,ASA接枝共聚物的氧化诱导期增长不显著;在230℃空气条件下,添加1%水性抗氧剂的ASA接枝共聚物的氧化诱导期可达73.1 min,其抗热氧老化能力是相同条件下不添加水性抗氧剂ASA接枝共聚物的80倍以上;水性抗氧剂的组成及含量对ASA树脂的力学性能无明显影响,对其表观性能如白度影响明显。

关键词：丙烯腈-苯乙烯-丙烯酸丁酯核壳接枝共聚物水性抗氧剂氧化诱导期抗热氧老化能力

“疏肝调神”针灸联合治疗难治性突发性耳聋的临床研究

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针灸临床杂志 2024年第6期40卷 12-16页

作者：张明垚马祖彬卢岩山东中医药大学山东济南250000 山东中医药大学附属医院山东济南250000

目的:探讨“疏肝调神”法针灸联合治疗难治性突发性耳聋的临床疗效。方法:将68例诊断为突发性耳聋的患者随机分为观察组和对照组,每组各34例。对照组采用常规西医疗法,观察组在对照组治疗基础上施以“疏肝调神”针灸联合治疗。观察两组... 详细信息

目的:探讨“疏肝调神”法针灸联合治疗难治性突发性耳聋的临床疗效。方法:将68例诊断为突发性耳聋的患者随机分为观察组和对照组,每组各34例。对照组采用常规西医疗法,观察组在对照组治疗基础上施以“疏肝调神”针灸联合治疗。观察两组患者治疗前后纯音测听听力阈值、常见伴随症状(耳鸣)严重程度(TEQ)、汉密尔顿抑郁(HAMD)与焦虑(HAMA)程度评定疗效。结果:观察组总有效率为97.06%(33/34),高于对照组的73.53%(25/34)。治疗后两组患者纯音测听听力阈值、TEQ、HAMD与HAMA评分均降低,差异具有统计学意义(P<0.05),且观察组降低程度均优于对照组,差异具有统计学意义(P<0.05)。结论:“疏肝调神”针灸联合疗法可有效治疗难治性突发性耳聋,能够显著降低患者听力损失程度,改善常见伴随症状,具有较高的临床应用价值。

关键词：突发性耳聋暴聋疏肝调神针刺实按灸

流动分散特点下国有工程企业党建工作从有形覆盖到有效覆盖研究

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石油化工管理干部学院学报 2024年第4期26卷 10-14页

作者：宗艺东杨博张明耀中国石化南京工程有限公司江苏南京210046

如何把国有企业党建工作优势转化为企业发展优势和实际成果?本研究提出了“两个覆盖”的中介变量,即党建工作“有形覆盖”和党建工作“有效覆盖”,设置了相应的主要参数,梳理形成了国企党建优势培养和转化一般逻辑,并在此基础上,通过调... 详细信息

如何把国有企业党建工作优势转化为企业发展优势和实际成果?本研究提出了“两个覆盖”的中介变量,即党建工作“有形覆盖”和党建工作“有效覆盖”,设置了相应的主要参数,梳理形成了国企党建优势培养和转化一般逻辑,并在此基础上,通过调研分析国有工程企业流动分散特点对“两个覆盖”相关参数的负面影响,提出了破解国有工程企业党建困境的框架模式和基本策略,为相关企业党组织提升党建工作实效提供了参考。

关键词：流动分散党建工作:有形覆盖有效覆盖

Performance and synergistic effect of phenolic and thio antioxidants in ABS graft copolymers

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Frontiers of Chemical Science and Engineering 2011年第1期5卷 26-34页

作者： Gongsheng LI Xuhong GUO Wang NA Diancheng HAO mingyao zhang Huixuan zhang Jun XU School of Chemical Engineering East China University of Science and TechnologyShanghai 200237China Calcium Carbide Factory of Jilin Petrochemical Co.Ltd PetrochinaJilin 132022China Polyethylene Factory of Jilin Petrochemical Co.Ltd PetrochinaJilin 132022China Institute of Chemical Engineering Changchun University of TechnologyChangchun 130012China Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun 130012China

The synergistic effect of phenolic and thio antioxidants on the stabilization of acrylonitrile-butadienestyrene(ABS)graft copolymers has been *** commercial antioxidants Irganox245,Irganox1076 and dilauryl thiodipropionate(DLTP)were *** based on hindered phenols and secondary antioxidant DLTP were *** was monitored in terms of changes in the functional groups(oxidation products),tensile properties and yellowness *** scanning calorimetry(DSC)and thermogravimetry(TG)were also used to assess the *** results indicated that the combination of Irganox245 and DLTP showed much better stabilization effect than the individual components due to the strong synergistic *** weak synergism could be observed in the formulation that contained Irganox1076 and ***1076 and Irgnox1076/DLTP exhibited similar behaviors between antioxidants with the highest and lowest efficiencies.

关键词： antioxidant ABS graft copolymers synergistic effect

Synthesis and Characterization of Poly（ω-pentadecalactone） for Its Industrial-scale Production

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Chemical Research in Chinese Universities 2015年第4期31卷 640-644页

作者： CHANG Qing LI Li YANG Dalei zhang mingyao TON-THAT Minh-Tan HU Wei LU Shuai Chemical Engineering Institute Changchun University of Technology Changchun 130012 P. R. China School of Life Science and Technology Harbin Institute of Technology Harbin 150080 P. R. China National Research Council 75 Bd de Mortagne Boucherville QC J4B 6Y4 Canada

The synthesis of biomaterial poly（ω-pentadecalactone）（PPDL） with yttrium isopropoxide as initiator in bulk was explored for its industrial-scale production. The weight-average molecular weight（Mw ） of PPDL could be controlled by the molar ratio of monomer to initiator（M/I）, polymerization temperature（Tp） and period（tp）. The syn- thesis conditions were optimized, and a high Mw of 9.2×10^4 of PPDL could be obtained by the reaction at an M/I molar ratio of 1000/1 and 100 ℃ for only 30 min, which presented tough properties with a tensile strength of about 20 MPa and an elongation at break of about 300%. This mechanical property was comparable to that of high density polyethylene（HDPE）. The melting point was about 96 ℃, and 5% of mass loss temperature（T5%） was as high as 340℃. Thus, the PPDL with good mechanical properties and high thermal stability can be synthesized without sol- vent at low expenses.

关键词： Poly(ω-pentadecalactone) Polymerization Characterization

Investigating the reactivation of historical landslides during the 2022 Luding M_(S)6.8 earthquake

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Earthquake Science 2024年第3期37卷 200-209页

作者： Tao Wei mingyao Xia Xinxin zhang Shaojian Qi State Key Laboratory of Geohazard Prevention and Geo-environment Protection Chengdu University of TechnologyChengdu610059China

On September 5,2022,a strong earthquake with a magnitude of MS6.8 struck Luding County in Sichuan Province,China,triggering thousands of landslides along the Dadu River in the northwest-southeast(NW-SE)*** investigated the reactivation characteristics of historical landslides within the epicentral area of the Luding earthquake to identify the initiation mechanism of earthquake-induced *** of the two newly triggered and historical landslides were analyzed using manual and threshold methods;the spatial distribution of landslides was assessed in relation to topographical and geological factors using remote sensing *** study sheds light on the spatial distribution patterns of landslides,especially those that occur above historical landslide *** results revealed a similarity in the spatial distribution trends between historical landslides and new ones induced by *** landslides tend to be concentrated within a range of 0.2 km from the river and 2 km from the ***,both rivers and faults predominantly influenced the reactivation of historical ***,the reactivated landslides are characterized by their small to medium size and are predominantly situated in historical landslide *** number of reactivated landslides surpassed that of previously documented historical landslides within the study *** provide insights into the critical factors responsible for historical landslides during the 2022 Luding earthquake,thereby enhancing our understanding of the potential implications for future co-seismic hazard assessments and mitigation strategies.

关键词： Luding earthquake co-seismic landslides historical landslides spatial distribution landslide reactivation

Research and Development on PFBC-CC in China and Jiawang Pilot Plant Project

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Journal of Thermal Science 1994年第3期3卷 205-210页

作者： Ningsheng Cai mingyao zhang Dan Li Wenting Fu (Thermal Energy Engineering Research Institute, Southeast University, Nanjing 210096, China) Thermal Energy Engineering Research Institute Southeast University Nanjing China

Pressurized Fluidized Bed Combustion(PFBC) is recognized as an advanced coal-fired technology which can improve efficiency in combined cycle scheme and reduce environmental pollution. Progressive status on PFBC-CC in China is presented in this paper. Test results on a 1 MWt bench scale experimental PFBC facility is reviewed briefly. Based on retrofitting of an old steam power plant located at Jiawang,a project to construct a PFBC-CC pilot plant is under way. Designed capacity of the pilot plant is about 15 MWe, 3 MWe from gas cycle and 12 MWe from steam cycle. The system configuration, main design parameters, estimated technical performance as well as construction schedule of the pilot plant are described. The bright future for PFBC-CC in China is also indicated.

关键词： pressurized fluidized bed combustion combined cycle pilot plant

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基于响应曲面法旋风分离器的自然旋风长

东南大学学报（自然科学版） 2006年第2期36卷 247-251页

作者：钱付平章名耀东南大学洁净煤发电与燃烧技术教育部重点实验室南京210096

利用商业计算流体力学软件Fluent6.1对不同结构尺寸以及运行条件下旋风分离器内部气相流场进行了数值模拟,基于响应曲面法并利用统计软件M initab V14得到了旋风分离器自然旋风长新的预测模型.对预测模型分析后表明,除了入口面积和排气... 详细信息

利用商业计算流体力学软件Fluent6.1对不同结构尺寸以及运行条件下旋风分离器内部气相流场进行了数值模拟,基于响应曲面法并利用统计软件M initab V14得到了旋风分离器自然旋风长新的预测模型.对预测模型分析后表明,除了入口面积和排气芯管直径影响自然旋风长外,入口风速、旋风器高度以及排气芯管的插入深度也会不同程度地影响自然旋风长.由于自然旋风长预测模型考虑了更多的影响因素,和以前的模型比较能更好地反映旋风分离器的结构尺寸及运行条件对其性能的影响.

关键词：响应曲面法旋风分离器自然旋风长预测模型