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Zhong, L.L.,Yao, J.H.,Cheng, N.,Sun, Y.J.,Liu, Y.R.,Wang, Y.J.,Sun, X.Q.,Xi, H.B. Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.6
This study investigated whether supplemental Cu, Fe, Zn, and Mn are needed in a practical diet for pullets. Four hundred and twenty females of an egg-laying strain (1-d-old, Lohmann Brown Layer) were randomly distributed into 4 groups, consisting of 7 replicates of 15 birds each. During the 18-week experimental period, chicks were given three basal diets in sequence, each with single or multiple Mn, Zn and Cu supplementation to improve the mineral balance gradually. In the Control, no Mn, Zn, and Cu were added; in the single Mn supplemented group (sMn) Mn was added to 120, 60, and 60 mg/kg for 1-6, 7-12, and 13-18 weeks of age, respectively; in the multiple Mn and Zn supplemented group (mMnZn), Mn was added to 180, 90, and 90 mg/kg and Zn was added to 120, 105, and 105 mg/kg for 1-6, 7-12, and 13-18 weeks of age, respectively; in the multiple Mn, Zn, Cu supplemented group (mMnZnCu), Mn, Zn, and Cu were added to the same multiple of basal Fe concentration relative to NRC (1994) recommendations. Energy and protein metabolizability were determined by subtracting energy/protein intake by energy/protein excretion (from both feces and urine) and dividing by energy/protein intake. There were no statistically significant differences between groups in terms of feed intake, final body weight or tibia length throughout the experiment. Optimal growth performance was observed in the Control, while adding trace minerals to basal diets tended to result in decreased productive performance. Protein metabolizability was increased by mMnZn and mMnZnCu treatments, but energy metabolizability was not affected. Concentrations of Mn, Zn, Cu in excreta varied greatly related to dietary content, and the retentions of Cu, Fe, Zn and Mn were all increased due to the improvement of mineral balance. Based on these results, it is suggested that the concentrations of Cu, Fe, Zn and Mn in typical basal diets used in this study were adequate for normal growth for pullets from 1 to 18 weeks of age.
Zhong, Y.,Shin, Y.C.,Kim, C.M.,Lee, B.G.,Kim, E.H.,Park, Y.J.,Sobahan, K.M.A.,Hwangbo, C.K.,Lee, Y.P.,Kim, T.G. Cambridge University Press (Materials Research Soc 2008 Journal of materials research Vol.23 No.9
<P>The optical and electrical properties of “tilted” and “spiral” indium tin oxide (ITO) thin films are reported. The influence of the flux incident angle on the optical and electrical properties is investigated. When the flux incident angle is increased, both the refractive index and extinction coefficient of the film are decreased, but the resistivity is increased. Thus, the physical properties of the film can be modified over a wide range by adjusting the flux incident angle and substrate rotation scheme. It is suggested that the oblique angle deposition technique provides ITO films with more application possibilities by allowing their optical and electrical properties to be tailored.</P>
Gender Equality in ICT Content Creation
Y. X. Zhong The Sookmyung Women's University 2003 APWIN Vol.5 No.-
The general review and comments on gender equality issues are made in Section 1 of the paper and an analysis concerning the basic concepts about ICT/IT is carried out on in Section 2. Section 3 discusses why ICT/IT-based Information Network provides the best opportunity never seen before in history to uphold the basis ofgender equality. This is followed by a number of suggestions in Section 4 on policies for guaranteeing gender equality. Finally, in section 5, the information about a Web Forum on "Women in Engineering" is released which is an important part of the 2004 World Engineers' Convention (WEC2004), which is being organized by the World Federation of Engineering Organizations (WFEO).
Zhong, Z.,Woo, K.,Kim, I.,Hwang, H.,Kwon, S.,Choi, Y. M.,Lee, Y.,Lee, T. M.,Kim, K.,Moon, J. Royal Society of Chemistry 2016 Nanoscale Vol.8 No.16
<P>Copper nanowire (Cu NW)-based flexible transparent conductive electrodes (FTCEs) have been investigated in detail for use in various applications such as flexible touch screens, organic photovoltaics and organic light-emitting diodes. In this study, hexadecylamine (HDA) adsorbed onto the surface of NWs is changed into polyvinylpyrrolidone (PVP) via a ligand exchange process; the high-molecular-weight PVP enables high dispersion stability. Intense pulsed light (IPL) irradiation is used to remove organic species present on the surface of the NWs and to form direct connections between the NWs rapidly without any atmospheric control. NWs are self-nanoembedded into a plastic substrate after IPL irradiation, which results in a smooth surface, strong NW/substrate adhesion, excellent mechanical flexibility and enhanced oxidation stability. Moreover, Cu NW FTCEs with high uniformities are successfully fabricated on a large area (150 mm x 200 mm) via successive IPL irradiation that is synchronized with the motion of the sample stage. This study demonstrates the possibility of roll-to-roll-based, large-scale production of low-cost, high-performance Cu NW-based FTCEs.</P>
Coordination polymer nanospheres: Preparation, upconversion properties and cytotoxicity study
Zhong, S.,Ji, Y.,Xie, Q.,Wang, L.,Li, Y.,Jeong, J.H. North-Holland 2013 Materials Letters Vol. No.
Coordination polymer (CP) nanospheres with diameters of 100-200nm have been successfully synthesized via a simple solvothermal approach employing glycol both as solvent and ligand in the presence of asparagine. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), inductive coupled plasma (ICP), thermogravimetric (TG) and differential thermal (DTA) analysis were used to characterize the products. Upconversion emission centering at about 676nm is realized in the coordination polymer spheres when excited with 980nm laser. Cytotoxicity study reveals that the coordination polymer nanospheres are biocompatible.
Y. Yuan,Z. H. Zhong,Z.S. Yu,H. F. Yin,Y. Y. Dang,X. B. Zhao,Z. Yang,J. T. Lu,J. B. Yan,Y. Gu 대한금속·재료학회 2015 METALS AND MATERIALS International Vol.21 No.4
A new Ni-Fe-based superalloy, HT-X, has been developed for applications in 700 °C advanced ultra-supercritical (A-USC) boilers. The HT-X alloy is subjected to various heat treatments. Tensile tests are conducted at room temperature (RT), 700 °C and 750 °C. Creep tests are carried out under conditions of 700 °C/300 MPa and 750 °C/150 MPa. After aging treatment, the yield strength of the HT-X alloy at RT and 750 °C is 787 MPa and 624 MPa, respectively. When additional thermal exposure at 750 °C for 5400 h is applied, the yield strength is decreased to 656 MPa at RT and 480 MPa at 700 °C. For an aged specimen, the a/2<110> dislocation shearing process occurs when tensile testing is conducted at RT and 750 °C. As the γ' precipitate size increases in the specimen that is thermally exposed at 750 °C for 5400 h, Orowan bowing is the dominant dislocation process, and stacking faults develop in the γ' precipitates at both RT and 700 °C. Dislocation slip combined with climb is the dominant mechanism under the creep testing conditions. The factors that affect the mechanical properties and deformation mechanisms are discussed.
Genetic Polymorphism of Milk Protein and Their Relationships with Milking Traits in Chinese Yak
Mao, Y.J.,Zhong, G.H.,Zheng, Y.C.,Pen, X.W.,Yang, Z.P.,Wang, Y.,Jiang, M.F. Asian Australasian Association of Animal Productio 2004 Animal Bioscience Vol.17 No.11
Milk protein polymorphisms were genotyped by polyacrylamide gel electrophoresis (PAGE) from 109 Maiwa and 100 Jiulong yaks. The relationships between milk protein polymorphisms and 3 milking traits were studied. The results showed that $\beta$-CN, $\kappa$-CN and $\alpha$-La were monomorphic, and ${\alpha}_{s1}$-CN and $\beta$-Lg were polymorphic, with ${\alpha}_{s1}$-CN D and $\beta$-Lg E as dominant genes, respectively. The frequencies of ${\alpha}_{s1}$-CN D were 0.8073 and 0.6000 in two populations and $\beta$-Lg E were 0.9770 and 0.9700. The mean heterozygosities were 0.1021 and 0.1867 in the two populations. No significant effects on milking traits and milk protein compositions were observed except for ${\alpha}_{s1}$-CN locus on fat percentage in Jiulong yak.
Kinetics calculation of fast periodic pulsed reactors using MCNP6
Z. Zhong,Y. Gohar,A. Talamo,Y. Cao,I. Bolshinsky,Yu N. Pepelyshev,Alexander Vinogradov 한국원자력학회 2018 Nuclear Engineering and Technology Vol.50 No.7
Fast periodic pulsed reactor is a type of reactor in which the fission bursts are formed entirely withexternal reactivity modulation with a specified time periodicity. This type of reactors could generatemuch larger intensity of neutron beams for experimental use, compared with the steady state reactors. Inthe design of fast periodic pulsed reactors, the time dependent simulation of the power pulse is majorlybased on a point kinetic model, which is known to have limitations. A more accurate calculation methodis desired for the design analyses of fast periodic pulsed reactors. Monte Carlo computer code MCNP6 isused for this task due to its three dimensional transport capability with a continuous energy library. Some new routines were added to simulate the rotation of the movable reflector parts in the timedependent calculation. Fast periodic pulsed reactor IBR-2M was utilized to validate the new routines. This reactor is periodically in prompt supercritical state, which lasts for ~400 ms, during the equilibriumstate. This generates long neutron fission chains, which requires tremendously large amount ofcomputation time during Monte Carlo simulations. Russian Roulette was applied for these very longneutron chains in MCNP6 calculation, combined with other approaches to improve the efficiency of thesimulations. In the power pulse of the IBR-2M at equilibrium state, there is some discrepancy betweenthe experimental measurements and the calculated results using the point kinetics model. MCNP6 resultsmatches better the experimental measurements, which shows the merit of using MCNP6 calculationrelative to the point kinetics model.