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- 저자 : Yuze zhang (검색결과 5 건)
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Yuze Xue,Mingwei Zhang,Le Xin,Luchao Ren,Panpan Lv,Hang Zhan,Jing He,Jiwei Zhai 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.2
0.2ZnAl2O4/0.8Ba0.5Sr0.5TiO3 ceramics with good dielectric temperature stability were synthesized by controlling sinteringbehavior. The relationship between sintering conditions, microstructure, and dielectric properties of ceramics was studied. Cubic structures were confirmed in all ceramics. Double sintering (DS) behavior can effectively improve the density, and thegrain size has no obvious change compared with non-repeated sintering. The maximum dielectric permittivity (220 at 10 kHz)and minimum leakage current (3.98×10-6 A/cm2 at 0.25 kV/cm) are obtained in the DS ceramics, which is superior to thoseof the single sintering ceramics. This can be ascribed to the higher relative density of the DS ceramics in contrast to the singlesintering ceramics. More importantly, the temperature stability of the DS sample in all samples is optimal due to the highsurface energy at grain boundaries and improved density. This work demonstrates a route to produce ceramics with weaktemperature sensitivity for microwave applications.
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Huabin Zhang,Yuze Bai,Xuejia Shi,Linxia Sun,Zhengfei Wang,Xiaobing Wu 한국유전학회 2018 Genes & Genomics Vol.40 No.2
Passeriformes is the largest group within aves and the phylogenetic relationships between Passeriformes have caused major disagreement in ornithology. Particularly, the phylogenetic relationships between muscicapoidea and sylvioidea are complex, and their taxonomic boundaries have not been clearly defined. Our aim was to study the status of two bird species: Tarsiger cyanurus and Phoenicurus auroreus. Furthermore, we analyzed the phylogenetic relationships of Passeriformes. Complete mitochondrial DNA (mtDNA) sequences of both species were determined and the lengths were 16,803 (T. cyanurus) and 16,772 bp (P. auroreus), respectively. Thirteen protein-coding genes, 22 tRNA genes, two rRNA genes, and one control region were identified in these mtDNAs. The contents of A and T at the base compositions was significantly higher than the content of G and C, and this AT skew was positive, while the GC skew was negative. The monophyly of Passeriformes is divided into four major clades: Corvoidea, Sylvioidea, Passeroidea, and Musicicapoidea. Paridae should be separated from the superfamily Sylvioidea and placed within the superfamily Muscicapoidea. The family Muscicapidae and Corvida were paraphyly, while Carduelis and Emberiza were grouped as a sister taxon. The relationships between some species of the order passeriformes may remain difficult to resolve despite an effort to collect additional characters for phylogenetic analysis. Current research of avian phylogeny should focus on adding characters and taxa and use both effectively to obtain a better resolution for deeper and shallow nodes.
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Zhengfei Wang,Daizhen Zhang,Xuejia Shi,Linxia Sun,Yuze Bai,Bo-Ping Tang 한국유전학회 2017 Genes & Genomics Vol.39 No.12
Most of Alvinocaridid shrimps live in hydrothermal vents, where is a wicked environment with highly toxic chemistry, hypoxia, acidic pH, and sulfide deposits. In order to adapt to this environment, change in energy metabolism may be one of the primary factors. However, the genetic basis of energy metabolism underlying this environment remains unexplored. Here, we present the first systematic investigation of mitochondrial genes in Alvinocarididae. The analysis demonstrated that ATP6, ND4 and ND6 were subjected to strong positive selection leading to last common ancestors of Alvinocarididae, and ATP8, ND5, COX1 and COX2 were determined to have undergone positive selection in the interior lineages of Alvinocarididae. Considering that about 95% of ATP is supplied by mitochondria via oxidative phosphorylation, and body detoxification process associated with cytochrome c. Positive selection in these genes suggested that Alvinocaridid shrimps might have acquired an enhanced capacity for energy metabolism and detoxification in extreme hydrothermal vent field.
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Lianmin Ji,Licheng Zhang,Dong Shi,Xiaowu Peng,Jinfeng Li,Yuze zhang,Taoshan Xu,Lijuan Liao 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-
The degradation of TBP has become a stumbling block to the industrial continuous production of lithiumchloride extraction from brines with high Mg/Li ratio by solvent extraction. To develop a more stable andmore efficient extraction system, a novel amide system, containing newly synthesized extractant N,N-bis(2-ethylhexyl)-2-methoxyacetamide (NBEHMOA), FeCl3 6H2O and sulfonated kerosene, was proposed inthis work. Compared with TBP and N523, NBEHMOA extracted Li+ and H+ in the sequence of TBP ˃NBEHMOA ˃ N523 and N523 ˃ TBP ˃ NBEHMOA respectively. The solution containing 5.5 mol/L LiCland 0.5 mol/L HCl was used as the eluent in the scrubbing process. A Li+ extraction efficiency of 96.7%and 22.31 g/L Li+ in the stripping solution were achieved by the whole process with counter-currenttwelve stages. The extraction mechanism investigated via FT-IR spectroscopy illustrated that the metalions Fe3+ and Li+ were mainly coordinated by the carbonyl C = O in NBEHMOA. This novel amide systemcan successfully achieve the cascade extraction effect for lithium, Li/Mg separation and avoid the generationof phase interface objects through counter-current extraction of lithium from brine at a lower acidity. This work provided a novel extraction system to recover lithium from the higher magnesium/lithiumratio brines.
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Lianmin Ji,Liang Cai,Yuze zhang,Xiaowu Peng,Dong Shi,Lijuan Li 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.123 No.-
Based on the exchangeability of anions between the layers of magnesium-based LDHs, LDHs intercalatedby tartaric acid anion (TA-LDH) was prepared by co-precipitation method to adsorb boron, and confirmedby XRD and FT-IR that TA had successfully entered the interlayer of LDH. The adsorption kinetics showedthat the adsorption efficiency of B was mainly controlled by the chemisorption mechanism. The thermodynamicsrevealed that the relationship between the equilibrium concentration of B in solution and theadsorption capacity of TA-LDH for B was consistent with the Freundlich model. Cl or Li+ in solution hadlittle effect on the adsorption of B by TA-LDH, while SO4 2 had a great effect on that compared with NO3-LDH. Boron adsorption was accomplished through the interaction between the hydroxyl of TA anion inthe interlayer and that of B(OH)3 and B(OH)4. The elution efficiency of TA-LDH was greater than 70% withammonium chloride used as the eluent. While TA-LDH still maintained a good adsorption capacity after 5cycles, and the solubility loss efficiencies of Mg2+ in a single adsorption and elution were 1.5% and 5.4%,respectively. Our study can provide a new idea and method for the development and utilization of magnesiumresources.
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