2篇
您的检索式：作者名="Shiquan CUI"
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| 1 | Male heterogametic sex determination in Rana dybowskii based on sex-linked molecular markers显示文摘Identifying the mechanism for sex determination in amphibians is challenging.Very little is known about sex determination mechanisms of Rana dybowskii,a species of importance to evolutionary and conservation biology.We screened for sex-linked molecular markers in R.dybowskii in China using target region amplification polymorphism with 2 fixed primers against the sequences of Dmrt1.We found 2 male-linked molecular markers in R.dybowskii,which were 222 bp and 261 bp long.The detection rates of 222 bp marker in males form Xinglong,Huadian,and Dandong were 93.79%,69.64%,and 13.64%,respectively,while the rate in females from Huadian was 27.50%.Besides,the detection rates of 261 bp marker in the above 3 regions were only observed in males at the rate of 93.79%,87.50%,and 32.73%,respectively.The inheritance patterns of sex-linked molecular markers showed that the 2 sex-linked molecular markers were heterozygous.Compared to the XY-male parent,progeny from XX-pseudo-male parent possessed lower sex reversal ratio at the same rearing temperature,and the proportion of female froglets from an XX-pseudo-male parent was more than 95%at low rearing temperature(15°C).Our findings suggest that R.dybowskii displays male heterogamety,and the 2 sex-linked molecular markers may have a guiding significance for the protection and utilization of R.dybowskii. | Yuan XU Zhiheng DU Jiayu LIU Hang SU Fangyong NING Shiquan CUI Lijuan WANG Jianming LIU Chuanshuai REN Shengwei DI Xiujuan BAI | 2022 | Integrative Zoology2022，17，1： | 0 |
| 2 | Effect of Thermal-cold Cycling Treatment on Mechanical Properties and Microstructure of 6061 Aluminum Alloy显示文摘The influence of thermal-cold cycling treatment on mechanical properties and microstructure of 6061 aluminum alloy was investigated by means of tensile test, optical microscopy(OM), X-ray diffraction(XRD) and transmission electron microscopy(TEM). The cryogenic treatment mechanism of the alloys was discussed. The results show that thermal-cold cycling treatment is beneficial since it produces a large number of dislocations and accelerates the ageing process of the alloy and yields the finer dispersed β' precipitates in the matrix. This variation of microstructural changes leads to more favorable mechanical properties than the other investigated states, while grain boundary precipitation is coarse and distributed discontinuously along grain boundaries, with a lower precipitation free zone(PEZ) on the both sides of precipitated phase. As a result, the tensile strength, elongation and conductivity of 6061 aluminum alloy after thermal-cold cycling treatment are 373.37 MPa, 17.2% and 28.2 MS/m, respectively. Compared with conventional T6 temper, the mechanical properties are improved significantly. | 王会敏 LI Yanguang GUO Chaobo CUI Guoming HUANG Shiquan | 2023 | Journal of Wuhan University of Technology(Materials Science)2023，38，3： | 0 |
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