Mesoporous activated carbons were prepared from direct coal liquefaction residue （CLR） by KOH activation method, and the experiments were carried out to investigate the effects of KOH/CLR ratio, solvent for mixing t...Mesoporous activated carbons were prepared from direct coal liquefaction residue （CLR） by KOH activation method, and the experiments were carried out to investigate the effects of KOH/CLR ratio, solvent for mixing the CLR and KOH, and carbonization procedure on the resultant carbon texture and catalytic activity for catalytic methane decomposition （CMD）. The results showed that optimal KOH/CLR ratio of 2 ： 1; solvent with higher solubility to KOH or the CLR, and an appropriate carbonization procedure are conductive to improving the carbon pore structure and catalytic activity for CMD. The resultant mesoporous carbons show higher and more stable activity than microporous carbons. Additionally, the relationship between the carbon textural properties and the catalytic activity for CMD was also discussed.展开更多
In order to improve insect-resistance of cotton and cultivate new cotton varieties ,tissue culture and plant regeneration of cotton (Gossypium hirsutum L. ) were studied with Xinluzao 4,Xi 550,Jizi 492,Hengwu 89-3... In order to improve insect-resistance of cotton and cultivate new cotton varieties ,tissue culture and plant regeneration of cotton (Gossypium hirsutum L. ) were studied with Xinluzao 4,Xi 550,Jizi 492,Hengwu 89-30,Han 93-2 and Jizi 123 . A system of cotton tissue culture for rapid plant regeneration was developed.
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A simple and rapid regeneration method of cotton (Gossypium hirsutum L. cv. Xinluzao4) is described. The proper use of phytohormone KT and IBA validly promoted the survival rate of test-tube plants and shortened the p...A simple and rapid regeneration method of cotton (Gossypium hirsutum L. cv. Xinluzao4) is described. The proper use of phytohormone KT and IBA validly promoted the survival rate of test-tube plants and shortened the period of culture in combination with the techniques of micro-propagation and graft.展开更多
PHYTOCHROME INTERACTING FACTOR3 （PIF3） is an important component in the phytochrome signaling pathway and mediates plant responses to various environmental conditions. We found that PIF3 is involved in the inhibitio...PHYTOCHROME INTERACTING FACTOR3 （PIF3） is an important component in the phytochrome signaling pathway and mediates plant responses to various environmental conditions. We found that PIF3 is involved in the inhibition of root growth of Arabidopsis thaliana seedlings induced by nitric oxide （NO） in light. Overexpression of PIF3 partially alleviated the inhibitory effect of NO on root growth, whereas the pif3-1 mutant displayed enhanced sensitivity to NO in terms of root growth. During phytochrome signaling, the photoreceptor PHYB mediates the degradation of PIF3. We found that the phyB-9 mutant had a similar phenotype to that of PIF3ox in terms of responsiveness to NO. Furthermore, NO treatment promoted the accumulation of PHYB, and thus reduced PIF3 content. Our results further show that the activity of PIF3 is regulated by the DELLA protein RGL3[RGA （repressor of gal-3） LIKE 3]. Therefore, we speculate that PIF3 lies downstream of PHYB and RGL3, and plays an important role in the inhibitory effect of NO on root growth of Arabidopsis seedlings in light.展开更多
基金supported by the National Natural Science Foundation of China(No.20906009)the Key Program Project of Joint Fund of Coal Research by NSFC and Shenhua Group(No.51134014)+2 种基金the Fundamental Research Funds for the Central Universities(No.DUT12JN05)the National Basic Research Program of China(973Program)the Ministry of Science and Technology,China(No.2011CB201301)
文摘Mesoporous activated carbons were prepared from direct coal liquefaction residue （CLR） by KOH activation method, and the experiments were carried out to investigate the effects of KOH/CLR ratio, solvent for mixing the CLR and KOH, and carbonization procedure on the resultant carbon texture and catalytic activity for catalytic methane decomposition （CMD）. The results showed that optimal KOH/CLR ratio of 2 ： 1; solvent with higher solubility to KOH or the CLR, and an appropriate carbonization procedure are conductive to improving the carbon pore structure and catalytic activity for CMD. The resultant mesoporous carbons show higher and more stable activity than microporous carbons. Additionally, the relationship between the carbon textural properties and the catalytic activity for CMD was also discussed.
文摘 In order to improve insect-resistance of cotton and cultivate new cotton varieties ,tissue culture and plant regeneration of cotton (Gossypium hirsutum L. ) were studied with Xinluzao 4,Xi 550,Jizi 492,Hengwu 89-30,Han 93-2 and Jizi 123 . A system of cotton tissue culture for rapid plant regeneration was developed.
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文摘A simple and rapid regeneration method of cotton (Gossypium hirsutum L. cv. Xinluzao4) is described. The proper use of phytohormone KT and IBA validly promoted the survival rate of test-tube plants and shortened the period of culture in combination with the techniques of micro-propagation and graft.
文摘PHYTOCHROME INTERACTING FACTOR3 （PIF3） is an important component in the phytochrome signaling pathway and mediates plant responses to various environmental conditions. We found that PIF3 is involved in the inhibition of root growth of Arabidopsis thaliana seedlings induced by nitric oxide （NO） in light. Overexpression of PIF3 partially alleviated the inhibitory effect of NO on root growth, whereas the pif3-1 mutant displayed enhanced sensitivity to NO in terms of root growth. During phytochrome signaling, the photoreceptor PHYB mediates the degradation of PIF3. We found that the phyB-9 mutant had a similar phenotype to that of PIF3ox in terms of responsiveness to NO. Furthermore, NO treatment promoted the accumulation of PHYB, and thus reduced PIF3 content. Our results further show that the activity of PIF3 is regulated by the DELLA protein RGL3[RGA （repressor of gal-3） LIKE 3]. Therefore, we speculate that PIF3 lies downstream of PHYB and RGL3, and plays an important role in the inhibitory effect of NO on root growth of Arabidopsis seedlings in light.
