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- 저자 : Yuming Xie (검색결과 3 건)
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Lysine Requirement of Male White Pekin Ducklings from Seven to Twenty-one Days of Age
Xie, Ming,Guo, Yuming,Zhang, Ting,Hou, Shuisheng,Huang, Wei Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.10
A dose-response experiment with five lysine levels (0.65, 0.80, 0.95, 1.10, and 1.25%) was conducted to evaluate the lysine requirement of male White Pekin ducklings from 7 to 21 days of age. Two hundred and eighty, 7-day-old, male White Pekin ducklings were allocated to 5 experimental treatments, each containing 8 replicate pens with 7 birds per pen. Feed and water were provided ad libitum from 7 to 21 days of age. At 21 days of age, weight gain, feed intake, feed/gain, breast meat weight, and breast meat yield relative to body weight of ducklings from each pen were all measured. As dietary lysine level increased, weight gain, feed intake, feed/gain, breast meat weight, and breast meat yield of ducklings were all improved significantly (p<0.05). According to broken-line regression analysis, the lysine requirement of male White Pekin ducklings from 7 to 21 days of age for weight gain, feed/gain, breast meat weight, and breast meat yield was 0.84, 0.90, 0.97, and 0.98%, respectively. Considering that Pekin duck production is directed to meat production, the lysine requirement of male starter Pekin ducklings during this period is suggested to be 0.98%.
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Suppression of stray electrons in the negative ion accelerator of CRAFT NNBI test facility
Yang Yuwen,Wei Jianglong,Xie Junwei,Gu Yuming,Xie Yahong,Hu Chundong 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.3
Comprehensive Research Facility for Fusion Technology (CRAFT) is an integration of different demonstrating or testing facilities, which aim to develop the critical technology or composition system towards the fusion reactor. Due to the importance and challenge of the negative ion based neutral beam injection (NNBI), a NNBI test facility is included in the framework of CRAFT. The initial object of CRAFT NNBI test facility is to obtain a H0 beam power of 2 MW at the energy of 200e400 keV for the pulse duration of 100 s. Inside the negative ion accelerator of NNBI system, the interactions of the negative ions with the background gas and electrodes can generate abundant stray electrons. The stray electrons can be further accelerated and dumped on the electrodes or eject from the accelerator. The stray electrons, including the ejecting electrons, cause the unwanted particle and heat flux onto the electrodes and the inner components of beamline (especially the temperature sensitive cryopump). The suppression of the stray electrons from the CRAFT accelerator is carried out via a series of design and simulation works. The paper focuses the influence of different magnetic field configurations on the stray electrons and the character of the ejecting electrons.
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Qin Zhang,Lijiao Fan,Wenbin Liu,Yuming Xie,Jiangang Li,Guolin Huang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.124 No.-
The core–shell structure UiO-66-NH2@Ni-MOF was prepared by in-diffusion growth of 2D Ni-MOF onUiO-66-NH2 using PVP (polyvinylpyrrolidone) as a structural guide. It was applied to the adsorption ofU(VI) in aqueous solution. The materials were characterized by powder X-ray diffraction (PXRD),Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electronmicroscopy (TEM), and energy dispersive spectrometer (EDS). The UiO-66-NH2@Ni-MOF adsorptionto U(VI) was investigated experimentally. The study showed that the adsorption of U(VI) onto UiO-66-NH2@Ni-MOF was endothermic and spontaneous. At pH 5.00 and 308 K, the adsorption capacity was581.40 mg/g according to Langmuir model. In addition, the adsorption process can be described by thepseudo-second-order kinetic model. The adsorption capacity was kept at 83.83% of its original one afterfive sorption–desorption cycles, a promising indication for repetitive usage.
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