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玻纤碳纤混杂增强树脂复合材料质量含量的测试研究

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中国检验检测 2024年第3期32卷 5-8页

作者：崔峰波崔丽荣冉文华蒋斌兵张萍袁向静巨石集团有限公司玻璃纤维研究院产品研发中心桐乡314500

本文针对玻纤碳纤混杂增强树脂复合材料,研究了两种质量含量的测试方法。浓硫酸消解法:在标准ISO14127提及的浓硫酸法基础上增加了灼烧步骤,完善健全了测试方法,另外探讨了纤维损失的影响。失重分析法(TGA法):研究了取样量、分段测试以... 详细信息

本文针对玻纤碳纤混杂增强树脂复合材料,研究了两种质量含量的测试方法。浓硫酸消解法:在标准ISO14127提及的浓硫酸法基础上增加了灼烧步骤,完善健全了测试方法,另外探讨了纤维损失的影响。失重分析法(TGA法):研究了取样量、分段测试以及升温速率的影响以确定测试方法。对比结果发现:TGA方法的测试结果与扣除纤维损失的浓硫酸消解法更接近。总的来说,TGA方法更准确、操作更简单、方便。

关键词：玻纤碳纤混杂增强树脂复合材料质量含量浓硫酸消解法 TGA法

Influence of ammonium sulfate on the corrosion behavior of AZ31 magnesium alloy in chloride environment

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Journal of Magnesium and Alloys 2024年第3期12卷 1082-1101页

作者： feng Ge Zhongyu cui Yue Liu Li Lei Xin Wang Hongzhi cui School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Beijing National Innovation Institute of Lightweight Ltd.Beijing 101499China

Electrochemical corrosion of AZ31 magnesium alloy in the NH_(4)^(+)-SO_(4)2−-Cl−environment is *** of NH_(4)^(+)overshadows that of Cl−as the(NH_(4))_(2)SO_(4) concentration is 0.005 M or higher,yielding an evolution from localized corrosion to uniform *** effect of NH_(4)^(+)can be attributed to that(i)NH_(4)^(+)dissolves the inner MgO and hinders the precipitation of Mg(OH)_(2) and(ii)the buffering ability of NH_(4)^(+)provides H+,enhances the hydrogen evolution,and expedites the corrosion *** latter is demonstrated as the dominant factor with the results in unbuffered and buffered *** severe corrosion and hydrogen process in NH_(4)^(+)-containing solution results in a high Hads coverage and yields an inductive loop within the low ***,SO_(4)^(2−)is helpful in generating cracked but partially protective corrosion products,while Cl−could broaden the corrosion area beneath the corrosion product.

关键词： Magnesium alloy Ammonium corrosion Electrochemical kinetic parameter Anodic dissolution.

Asymmetric Hydrogenation of Phenanthridines with Chiral Boranes

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Chinese Journal of Chemistry 2024年第6期42卷 631-635页

作者： Guangyu cui Xiangqing feng Haifeng Du Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and FunctionInstitute of ChemistryChinese Academy of SciencesBeijing100190 China University of Chinese Academy of Sciences Beijing100049 China

The asymmetric hydrogenation of N-heteroarenes provides an efficient method for the synthesis of optically active cyclic secondary *** this paper,we described an asymmetric hydrogenation of phenanthridines using a chiral mono-alkene-derived borane.A variety of dihydrophenanthridines were furnished in high yields with up to 93%*** current catalytic system was very sensitive for the steric hindrance of *** substituents at one phenyl group of phenanthridines were required to obtain the high *** large substituents on the carbon of the C=N bonds would diminish the reactivity sharply.

关键词： Asymmetric catalysis Hydrogenation Nitrogen heterocycles Phenanthridines Frustrated Lewis pairs Chiral boranes

Insecticide resistance status and detoxification enzymes of wheat aphids Sitobion avenae and Rhopalosiphum padi

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Science China(Life Sciences) 2017年第8期60卷 927-930页

作者： Liuping Zhang Hong Lu Kun Guo Shumin Yao feng cui State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101China College of Life Sciences Qufu Normal UniversityQufu 273165China Institute of Medicinal Plant Development Chinese Academy of Medical SciencesPeking Union Medical CollegeBeijing 100193China

Dear Editor, Wheat aphids are serious pests in wheat growing areas of China, and can lead to from 10% to over 30% reduction in wheat production （Wang et al., 2006）. The main wheat aphids are Sitobion avenae （Fabricius）, Rhopalosiphum padi （Linnaeus）, Metopolophium dirhodum （Walker）, and Schiza- phis graminum （Rondani）. In the Huang-Huai area of China, the dominant wheat aphid species are S. avenae and R. padi. For many years, farmers have applied chemical pesticides to control wheat aphids. The number of wheat aphids in north China has increased from year to year, probably due to the increased resistance to insecticides.

关键词：小麦蚜虫麦长管蚜抗药性解毒酶 avenae 化学杀虫剂黄淮地区主产区

Transcriptomic responses of three aphid species to chemical insecticide stress

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Science China(Life Sciences) 2017年第8期60卷 931-934页

作者： Kun Guo Pengcheng Yang Jun Chen Hong Lu feng cui Institute of Medicinal Plant Development Chinese Academy of Medical SciencesPeking Union Medical CollegeBeijing 100193China State Key Laboratory of Integrated Management of Pest Inseets&Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101China Beijing Institutes of Life Science Chinese Academy of SciencesBeijing 100101China

Dear Editor, Aphids （Hemiptera： Aphididae） are economically im- portant pests that are distributed worldwide and cause serious economic losses through direct feeding on plant, plant virus transmission, and honeydew production （Zhang and Zhong, 1983; Blackman and Eastop, 2000）. Control of these aphid species relies almost exclusively on the use of chemical insecticides, such as organophosphates, carbamates, pyrethroids, cyclodienes, and neonicotinods. A number of aphid species have become resistant to at least one type of insecticide （Simon et al., 2001; van Emden and Harrington, 2007; Silva et al., 2012 in Supporting Informa- tion）. Most research efforts have focused on elucidating the molecular basis of inherited metabolic resistance in insecti- cide-resistant aphids （Hemingway, 2000; Choi et al., 2001; Sun et al., 2005; Cao et al., 2008a; Cao et al., 2008b; Puinean et al., 2010）.

关键词：化学杀虫剂反应转录胁迫蚜虫

UBC32 Mediated Oxidative Tolerance in Arabidopsis

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Journal of Genetics and Genomics 2012年第8期39卷 415-417页

作者： feng cui Lijing Liu Qingliang Li Chengwei Yang Qi Xie State Key Laboratory of Plant Genomics National Center for Plant Gene Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China Guangdong Key Lab of Biotechnology for Plant Development College of Life Science South China Normal University Guangzhou 510631 China

Extreme environments such as salt stress often increase the reactive oxygen species （ROS） levels （Abogadallah, 2010; Miller et al., 2010）, which cause protein denaturation and damage （Kelsen et al., 2008）. In eukaryotic cells, the endo- plasmic reticulum （ER） lumen is highly oxidative environment, which help newly synthesized proteins form intermolecular or intramolecular disulfide bonds between their cysteine residues. However, the ROS must be regulated according to the folding load to protect the cell from the consequences of oxidative folding.

关键词： ENDOPLASMIC-RETICULUM STRESS UNFOLDED PROTEIN RESPONSE SALT STRESS QUALITY-CONTROL PATHWAY CELLS

Calcium/calmodulin modulates salt responses by binding a novel interacting protein SAMS1 in peanut(Arachis hypogaea L.)

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作物学报：英文版 2023年第1期11卷 21-32页

作者： Sha Yang Jianguo Wang Zhaohui Tang Yan Li Jialei Zhang feng Guo Jingjing Meng feng cui Xinguo Li Shubo Wan Institute of Crop Germplasm Resources Shandong Academy of Agricultural SciencesJinan 250100ShandongChina Institute of Agricultural Resources and Environment Shandong Academy of Agricultural SciencesJinan 250100ShandongChina Shandong Academy of Agricultural Sciences/Shandong Provincial Key Laboratory of Crop Genetic Improvement Ecology and PhysiologyJinan 250100ShandongChina

The Ca^(2+)/CaM signal transduction pathway helps plants adapt to environmental stress. However, our knowledge on the functional proteins of C^(2+)/CaM pathway in peanut(Arachis hypogeae L.) remains limited. In the present study, a novel calmodulin 4(CaM4)-binding protein S-adenosyl-methionine synthetase 1(SAMS1) in peanut was identified using a yeast two-hybrid assay. Expression of AhSAMS1was induced by Ca^(2+), ABA, and salt stress. To elucidate the function of AhSAMS1, physiological and phenotypic analyses were performed with wild-type and transgenic materials. Overexpression of AhSAMS1increased spermidine and spermidine synthesis while decreased the contents of ethylene, thereby eliminating excessive reactive oxygen species(ROS) in transgenic lines under salt stress. AhSAMS1 reduced uptake of Na+and leakage of K+from mesophyll cells, and was less sensitive to salt stress during early seedling growth, in agreement with the induction of SOS and NHX genes Transcriptomics combined with epigenetic regulation uncovered relationships between differentially expressed genes and differentially methylated regions, which raised the salt tolerance and plants growth. Our findings support a model in which the role of AhSAMS1 in the ROS-dependent regulation of ion homeostasis was enhanced by Ca^(2+)/CaM while AhSAMS1-induced methylation was regulated by CaM, thus providing a new strategy for increasing the tolerance of plants to salt stress.

关键词： AhCaM4 AhSAMS1 Protein interaction Polyamines Salt tolerance

叶面肥替代植物生长调节剂对葡萄产量及品质的效果研究

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中国果菜 2024年第9期44卷 41-46页

作者：钱巍吉茹冯翠刘慧颖张双林江苏省农业科学院泰州农科所江苏泰州225300

在种植葡萄时常使用植物生长调节剂来促进果实膨大、增加产量,但是过量使用会导致果实品质下降。为探究替代植物生长调节剂使葡萄增产的方式,在葡萄不同生长期,对‘夏黑’‘阳光玫瑰’2个品种喷施阿米卡叶面肥和氯吡脲(一种生长调节剂)... 详细信息

在种植葡萄时常使用植物生长调节剂来促进果实膨大、增加产量,但是过量使用会导致果实品质下降。为探究替代植物生长调节剂使葡萄增产的方式,在葡萄不同生长期,对‘夏黑’‘阳光玫瑰’2个品种喷施阿米卡叶面肥和氯吡脲(一种生长调节剂)处理,调查葡萄的果实品质和产量。结果表明,喷施阿米卡叶面肥和氯吡脲处理能够促进葡萄果粒增大,提高产量,两者在‘夏黑’葡萄上增产差异不大,而在‘阳光玫瑰’葡萄上氯吡脲处理增产效果更明显。两个处理均会导致可溶性糖含量的下降,喷施阿米卡叶面肥可以降低可溶性酸含量,提高VC含量,提升葡萄的风味品质和营养价值,但氯吡脲处理会导致葡萄可溶性酸含量增加,影响葡萄的口感。总的来说,在‘阳光玫瑰’葡萄生产中与氯吡脲处理相比,喷施阿米卡叶面肥效果不显著,但在‘夏黑’葡萄生产中可以通过喷施阿米卡叶面肥来代替氯吡脲处理,达到提质增产的效果。

关键词：叶面肥植物生长调节剂 ‘夏黑’ ‘阳光玫瑰’

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国产苯达莫司汀+卡非佐米+地塞米松治疗复发/难治性多发性骨髓瘤的临床效果观察

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系统医学 2024年第6期9卷 121-123,127页

作者：冯翠张华李虎生吕钊陈丹宁广西玉林市红十字会医院血液内科广西玉林537000

目的观察国产苯达莫司汀+卡非佐米+地塞米松治疗复发/难治性多发性骨髓瘤(Relapse or Refractory Multiple Myeloma,RRMM)的临床疗效。方法回顾性选取2021年10月—2023年6月在广西玉林市红十字会医院血液肿瘤科就诊的32例RRMM患者的临... 详细信息

目的观察国产苯达莫司汀+卡非佐米+地塞米松治疗复发/难治性多发性骨髓瘤(Relapse or Refractory Multiple Myeloma,RRMM)的临床疗效。方法回顾性选取2021年10月—2023年6月在广西玉林市红十字会医院血液肿瘤科就诊的32例RRMM患者的临床资料。所有患者均使用苯达莫司汀+卡非佐米+地塞米松方案再诱导治疗。评估患者的总有效率、无进展生成期、总生存期及不良反应。结果32例RRMM均接受国产苯达莫司汀+卡非佐米+地塞米松治疗1疗程以上,治疗中位疗程数为[4(1,8)]个,总有效率18例;≥非常好的部分缓解6例。32例患者随访中位PFS为[7.4(3.5,12.8)]个月,中位OS时间为[11.3(4.6,18.8)]个月。血液学不良反应较为常见的是中性粒细胞计数减少7例、血小板减少6例、贫血6例;非血液学不良反应中常见乏力18例、呼吸道感染6例、心脏事件5例,恶心4例及周围神经病变4例。结论苯达莫司汀+卡非佐米+地塞米松对治疗RRMM患者是一种较好的选择,临床治疗效果较好,不良反应性较轻。

关键词：多发性骨髓瘤复发/难治性苯达莫司汀卡非佐米地塞米松效果