搅拌研磨工艺显著提升了布敦岩沥青(Buton Rock Asphalt,BRA)与沥青共混体系的稳定性,但BRA的矿物粒径分布对改性沥青流变性能的影响机制尚不清晰。为此,该文通过制备不同粒径分布的BRA改性沥青样品,开展高低温流变试验,系统分析BRA粒...搅拌研磨工艺显著提升了布敦岩沥青(Buton Rock Asphalt,BRA)与沥青共混体系的稳定性,但BRA的矿物粒径分布对改性沥青流变性能的影响机制尚不清晰。为此,该文通过制备不同粒径分布的BRA改性沥青样品,开展高低温流变试验,系统分析BRA粒径分布对BRA改性沥青流变行为的影响,同时结合荧光显微试验,分析了不同粒径分布下的BRA改性沥青的相态结构。结果表明:D_(50)、D_(90)和D_(span)与改性沥青的高温抗变形能力呈负相关,而与低温蠕变刚度和蠕变速率呈正相关,这表明减小BRA粒径有助于提升改性沥青的高温稳定性和低温抗裂性;减小无机矿物的粒径能够改善无机矿物在沥青中的分散状态,使结构更致密,从而增强高温抗车辙性能与低温柔韧性。展开更多
The application of a male-sterile line is an ideal approach for hybrid seed production in non-heading Chinese cabbage(Brassica rapa ssp.chinensis).However,the molecular mechanisms underlying male sterility in B.rapa a...The application of a male-sterile line is an ideal approach for hybrid seed production in non-heading Chinese cabbage(Brassica rapa ssp.chinensis).However,the molecular mechanisms underlying male sterility in B.rapa are still largely unclear.We previously obtained the natural male sterile line WS24-3 of non-heading Chinese cabbage and located the male sterile locus,Bra2Ms,on the A2 chromosome.Cytological observations revealed that the male sterility of WS24-3 resulted from disruption of the meiosis process during pollen formation.Fine mapping of Bra2Ms delimited the locus within a physical distance of about 129 kb on the A2 chromosome of B.rapa.The Bra039753 gene encodes a plant homeodomain(PHD)-finger protein and is considered a potential candidate gene for Bra2Ms.Bra039753 was significantly downregulated in sterile line WS24-3 compared to the fertile line at the meiotic anther stage.Sequence analysis of Bra039753 identified a 369 bp fragment insertion in the first exon in male sterile plants,which led to an amino acid insertion in the Bra039753 protein.In addition,the 369 bp fragment insertion was found to cosegregate with the male sterility trait.This study identified a novel locus related to male sterility in non-heading Chinese cabbage,and the molecular marker obtained in this study will be beneficial for the marker-assisted selection of excellent sterile lines in non-heading Chinese cabbage and other Brassica crops.展开更多
VIBRATO by NSR的首款音箱产品Swing书架式音箱诞生于2016年,一一经推出便深受玩家们的欢迎,随后推出S系列大型的监听扬声器产品,但是对于家居环境较小的玩家来说还是望而却步的,因此很多玩家建议文杰工作室推出能够在一般家庭环境中使...VIBRATO by NSR的首款音箱产品Swing书架式音箱诞生于2016年,一一经推出便深受玩家们的欢迎,随后推出S系列大型的监听扬声器产品,但是对于家居环境较小的玩家来说还是望而却步的,因此很多玩家建议文杰工作室推出能够在一般家庭环境中使用的落地式音箱。经过长达两年的研发,Sonata奏鸣曲落地音箱终于和发烧友见面了。展开更多
With the steady growth of the Chinese economy,more and more countries are focusing on China.A great number of brands are entering the Chinese market and auto brand is one of them.Brand translation plays an important r...With the steady growth of the Chinese economy,more and more countries are focusing on China.A great number of brands are entering the Chinese market and auto brand is one of them.Brand translation plays an important role for success of opening international market.This paper applies the Skopos theory to automobile brand translation,so as to provide a new angle to translation practice.展开更多
文摘搅拌研磨工艺显著提升了布敦岩沥青(Buton Rock Asphalt,BRA)与沥青共混体系的稳定性,但BRA的矿物粒径分布对改性沥青流变性能的影响机制尚不清晰。为此,该文通过制备不同粒径分布的BRA改性沥青样品,开展高低温流变试验,系统分析BRA粒径分布对BRA改性沥青流变行为的影响,同时结合荧光显微试验,分析了不同粒径分布下的BRA改性沥青的相态结构。结果表明:D_(50)、D_(90)和D_(span)与改性沥青的高温抗变形能力呈负相关,而与低温蠕变刚度和蠕变速率呈正相关,这表明减小BRA粒径有助于提升改性沥青的高温稳定性和低温抗裂性;减小无机矿物的粒径能够改善无机矿物在沥青中的分散状态,使结构更致密,从而增强高温抗车辙性能与低温柔韧性。
基金We thank the Wuhan Major Project of Key Technologies in Biological Breeding and New Variety Cultivation,China(2022021302024852)The Science and Technology Support Project of Rural Vitalization in Hubei Province,China(2022BBA121)+1 种基金the Key Research and Development Project of Hubei Province,China(2021BBA097)The Key Research and Development Project of Hubei Province,China(2021BBA102)。
文摘The application of a male-sterile line is an ideal approach for hybrid seed production in non-heading Chinese cabbage(Brassica rapa ssp.chinensis).However,the molecular mechanisms underlying male sterility in B.rapa are still largely unclear.We previously obtained the natural male sterile line WS24-3 of non-heading Chinese cabbage and located the male sterile locus,Bra2Ms,on the A2 chromosome.Cytological observations revealed that the male sterility of WS24-3 resulted from disruption of the meiosis process during pollen formation.Fine mapping of Bra2Ms delimited the locus within a physical distance of about 129 kb on the A2 chromosome of B.rapa.The Bra039753 gene encodes a plant homeodomain(PHD)-finger protein and is considered a potential candidate gene for Bra2Ms.Bra039753 was significantly downregulated in sterile line WS24-3 compared to the fertile line at the meiotic anther stage.Sequence analysis of Bra039753 identified a 369 bp fragment insertion in the first exon in male sterile plants,which led to an amino acid insertion in the Bra039753 protein.In addition,the 369 bp fragment insertion was found to cosegregate with the male sterility trait.This study identified a novel locus related to male sterility in non-heading Chinese cabbage,and the molecular marker obtained in this study will be beneficial for the marker-assisted selection of excellent sterile lines in non-heading Chinese cabbage and other Brassica crops.
文摘VIBRATO by NSR的首款音箱产品Swing书架式音箱诞生于2016年,一一经推出便深受玩家们的欢迎,随后推出S系列大型的监听扬声器产品,但是对于家居环境较小的玩家来说还是望而却步的,因此很多玩家建议文杰工作室推出能够在一般家庭环境中使用的落地式音箱。经过长达两年的研发,Sonata奏鸣曲落地音箱终于和发烧友见面了。
文摘With the steady growth of the Chinese economy,more and more countries are focusing on China.A great number of brands are entering the Chinese market and auto brand is one of them.Brand translation plays an important role for success of opening international market.This paper applies the Skopos theory to automobile brand translation,so as to provide a new angle to translation practice.
