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- 저자 : Jianfa Li (검색결과 3 건)
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Nasreldeen Siam,Li Chen,Shitong Guo,Abubakr M.J. Siam,Jianfa Li,Bingsi Liu 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.124 No.-
The removal of H2S that seriously threaten the environment and human health is of great significance inenhancing coal cleaning utilization. Herein, a series of persimmon wood-inspired macroporous (a%Co-Mn)1.5Al0.5Ox (a = 0, 3, 6, 10, 15, 20) sorbents were constructed by the self-assembly of vacuumassistedsol–gel procedure, and their desulfurization efficiency was evaluated on a fixed-bed reactor at600–800 C. Among cobalt-doping sorbents, the breakthrough sulfur capacity (BSC, 272.2 mg g1) andeffective utilization (EU, 81.5%) over (15%Co-Mn)1.5Al0.5Ox is greatly high than the value (138.08 mg g1)over ZnCoO4/SAPO-34@SBA-15, and slightly lower than BSC (286.2 mg g1) and EU (92.3%). The magnificationSEM images of (15%Co-Mn)1.5Al0.5Ox revealed that regularly straight macroporous channel structureinherited from persimmon wood effectively promoted the rapid diffusion of H2S molecules andaccelerated the rate of sulfur/oxygen exchange on the interface of the channel wall. In the meantime,the results studied by the deactivation kinetics model also confirm invariable rate constants (ka, kd) withhigh correlation coefficients due to higher stability and renewable ability of (15%Co-Mn)1.5Al0.5Ox.
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Ji, Hong,Wang, Jianfa,Liu, Juxiong,Guo, Jingru,Wang, Zhongwei,Zhang, Xu,Guo, Li,Yang, Huanmin Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.3
Zi geese (Anser anser domestica) belong to the white geese and are excellent layers with a superior feed-to-egg conversion ratio. Quantitative gene expression analysis, such as Real-time qRT-PCR, will provide a good understanding of ovarian function during egg-laying and consequently improve egg production. However, we still don't know what reference genes in geese, which show stable expression, should be used for such quantitative analysis. In order to reveal such reference genes, the stability of seven genes were tested in five tissues of Zi geese. Methodology/Principal Findings: The relative transcription levels of genes encoding hypoxanthine guanine phosphoribosyl transferase 1 (HPRT1), ${\beta}$-actin (ACTB), ${\beta}$-tubulin (TUB), glyceraldehyde-3-phosphate-dehydrogenase (GADPH), succinate dehydrogenase flavoprotein (SDH), 28S rRNA (28S) and 18S rRNA (18S) have been quantified in heart, liver, kidney, muscle and ovary in Zi geese respectively at different developmental stages (1 d, 2, 4, 6 and 8 months). The expression stability of these genes was analyzed using geNorm, NormFinder and BestKeeper software. Conclusions: The expression of 28S in heart, GAPDH in liver and ovary, ACTB in kidney and HPRT1 in muscle are the most stable genes as identified by the three different analysis methods. Thus, these genes are recommended for use as candidate reference genes to compare mRNA transcription in various developmental stages of geese.
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Yuqing Zhang,Xuemin Xu,Yuyuan Zhang,Jianfa Li 한국생물공학회 2011 Biotechnology and Bioprocess Engineering Vol.16 No.5
Fuel ethanol is one of the most important alternative fuels used as a substitute for fossil fuel. Lignocellulose is the most abundant biomass resource for the production of fuel ethanol. However, the hydrolysis of lignocellulose requires high enzyme loading. In order to strengthen the process of enzyme hydrolysis of lignocellulose,surfactant-polyethylene glycol (PEG) was applied to the catalysis of lignocellulose into fermentable sugars. The effect of PEG on both the enzymatic hydrolysis and adsorption of cellulose were investigated. The addition of surfactant obviously facilitated enzymatic hydrolysis. In particular, upon addition of PEG4000, the enzyme catalytic efficiency increased by 51.06%. Meanwhile,the adsorption quantity of cellulase decreased by 11.25%. In addition, the mechanism of the effect of PEG on enzymatic hydrolysis and cellulase adsorption is discussed.
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