RESUMO
As the industrial waste from blast furnace ironmaking, air-cooled blast furnace slag (ACBFS) puts a lot of pressure on the environment. It is becoming more and more urgent to deal with the increasing ACBFS. In this study, the concept of "full-volume slag alkali-activated mortars (FSAM)" is proposed using ground granulated water-cooled blast furnace slag (GGBS) as aluminosilicate material and ACBFS to replace machine-made sand, aiming to solve the current situation of increasing scarcity of natural resources. The characteristics of ACBFS are investigated, and its stability and heavy metal leaching all meet the requirements as a building material. The results show that the flowability and mechanical properties of FSAM are significantly enhanced with the substitution rate of ACBFS increases. Meanwhile, the incorporation of ACBFS is also beneficial to improve the compactness of the microstructure of the mortar, thereby improving the impermeability (Water, ion and gas) of FSAM. In addition, the specimen mixed with ACBFS showed good high temperature resistance due to the porous feature of the aggregate. Furthermore, using a small amount of limestone powder to replace GGBS can slightly improve the performance of FSAM. Therefore, ACBFS is recommended to be used in FSAM, which meets safety, cost and environmental benefits.
RESUMO
Methyl jasmonate (MeJA) is a lipid-derived plant hormone that mediates diverse biological phenomena. Application of MeJA onto rice spikelet could exhibit abnormal floral organ development. Although jasmonic acid (JA) has been proved to be involved in maize tassel sex determination process, the roles of JA and its precursor MeJA in maize tassel development still remain obscure. In this study, we found that tassel development was decelerated by application of 2 mM MeJA. Exogenous MeJA also influenced the number of palea and stamens of tassel spikelets. Exogenous MeJA increased the expression level of some key regulator genes, which may responsible for the phenotypic change in MeJA-treated tassel, and may mediate the crosstalk between MeJA and other hormones.
jasmonate (MeJA) é um derivado lipídico vegetal hormônio que medeia Diversos fenómenos biológicos.Aplicação de MeJA para arroz spikelet poderá apresentar Desenvolvimento anormal DOS órgãos florais.Apesar de Ácido jasmónico (Ja), precursor de MeJA, mostrou ser envolvido no processo de determinação do sexo de milho tassel, OS papéis DOS dois compostos de milho tassel Desenvolvimento ainda permanecem obscuros.No presente estudo, descobrimos que o Desenvolvimento FOI desacelerada pelo pedido do tassel de 2 mm MeJA.MeJA exógeno também influenciou o número de palea e estames de tassel spikelets.MeJA aumentou o nível de expressão exógena, um regulador chave genes, o que Pode o responsável PELA alteração fenotípica EM MeJA tratados tassel, e podem mediar a interferência entre MeJA e outras hormonas.
