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Wang, Z.B.,Xin, H.S.,Wang, M.J.,Li, Z.Y.,Qu, Y.L.,Miao, S.J.,Zhang, Y.G. Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.5
An in vitro fermentation was conducted to determine the effects of hainanmycin on protein degradation and populations of ammonia-producing bacteria. The substrates (DM basis) for in vitro fermentation consisted of alfalfa hay (31.7%), Chinese wild rye grass hay (28.3%), ground corn grain (24.5%), soybean meal (15.5%) with a forage: concentrate of 60:40. Treatments were the control (no additive) and hainanmycin supplemented at 0.1 (H0.1), 1 (H1), 10 (H10), and 100 mg/kg (H100) of the substrates. After 24 h of fermentation, the highest addition level of hainanmycin decreased total VFA concentration and increased the final pH. The high addition level of hainanmycin (H1, H10, and H100) reduced (p<0.05) branched-chain VFA concentration, the molar proportion of acetate and butyrate, and ratio of acetate to propionate; and increased the molar proportion of propionate, except that for H1 the in molar proportion of acetate and isobutyrate was not changed (p>0.05). After 24 h of fermentation, H10 and H100 increased (p<0.05) concentrations of peptide nitrogen and AA nitrogen and proteinase activity, and decreased (p<0.05) $NH_3$-N concentration and deaminase activity compared with control. Peptidase activitives were not affected by hainanmycin. Hainanmycin supplementation only inhibited the growth of Butyrivibrio fibrisolvens, which is one of the species of low deaminative activity. Hainanmycin supplementation also decreased (p<0.05) relative population sizes of hyper-ammonia-producing species, except for H0.1 on Clostridium aminophilum. It was concluded that dietary supplementation with hainanmycin could improve ruminal fermentation and modify protein degradation by changing population size of ammonia-producing bacteria in vitro; and the addition level of 10 mg/kg appeared to achieve the best results.
China Spallation Neutron Source: Accelerator Design Iterations and R&D Status
J. Wei,C.-D. Deng,C.-H. Wang,C.-T. Shi,H. Sun,H.-F. Ouyang,H.-M. Qu,H.-Y. Dong,J. Li,J. Zhang,J.-S. Cao,J.-Y. Tang,L. Dong,L.-L. Wang,Q. Qin,Q.-B. Wang,S. Wang,S.-N. Fu,S.-X Fang,T. -G. Xu,W. Kang,Y.- 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.I
The China Spallation Neutron Source (CSNS) is a high-power, accelerator-based project currently under preparation. The accelerator complex consists of an H$^-$ ion source, an H$^-$ linac, a rapid-cycling proton synchrotron, and the transport lines. During the past year, the design of most accelerator systems went through major iterations, and initial research and developments was started on the prototyping of several key components.
재태 서,A. Wang,A. Mott,C. Pompey,D. Temple,J. Anderson,J. H. Kim,J. L. Qu,M. Namkung,Q. Yang,Q. Wang,S. Creekmore,S. S. Jung,W. Yu,X. Peng 한국물리학회 2003 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.42 No.III
Nonlinear optical properties of cadmium telluride semiconductor nanocrystals were investigated for optical power self-limiting application. The semiconductor nanocrystals were synthesized through colloidal methods. The nonlinear refraction and the nonlinear figure of merit of CdTe nanocrystals in toluene ($\sim$8 $\times$ 10$^{-5}$ mol/L) were estimated to be $\sim$ -1 $\times$ 10$^{-13}$ m$^2$/W and $\sim$200, respectively. The optical power limiting through CdTe nanoscale materials was mainly by the nonlinear refraction because of the high nonlinear FOM.
Bursting toroidal Alfvén eigenmodes in KSTAR plasmas
Hole, M J,Qu, Z S,Layden, B,Michael, C A,Woo, M H,Bak, J G,Kim, J,Hezaveh, H IOP 2019 Plasma physics and controlled fusion Vol.61 No.2
<P>We report on observations of bursty mode activity during early neutral beam heating in KSTAR plasmas, before current flat top while the <I>q</I> profile is still evolving. The magnitude of the activity increases with early beam heating, and reduces with the addition of resonant magnetic perturbation magnetic field coils. A mode analysis yields a toroidal mode number of <I>n</I>?=?2. The mode is observed to be downward chirping in frequency, and exists for the duration of the slowing-down of the beam. Motional Stark effect constrained equilibrium reconstructions are available at adjacent time slices: we have rescaled the total current to the measured value to obtain the <I>q</I> profile during the mode activity. From this we have computed the mode spectrum and identified a number of candidate gap modes. Wave-particle simulations with plausible distribution functions are computed, which demonstrate that the lowest frequency mode satisfies the condition for wave drive <img ALIGN='MIDDLE' ALT='${\omega }_{* }/\omega \gt 1$' SRC='http://ej.iop.org/images/0741-3335/61/2/025016/ppcfaaf40bieqn1.gif'/>, where <img ALIGN='MIDDLE' ALT='${\omega }_{* }$' SRC='http://ej.iop.org/images/0741-3335/61/2/025016/ppcfaaf40bieqn2.gif'/> is the fast ion diamagnetic drift frequency. An interesting finding is the change from exponential growth of the mode above <img ALIGN='MIDDLE' ALT='${n}_{f}/{n}_{i0}\approx 0.6$' SRC='http://ej.iop.org/images/0741-3335/61/2/025016/ppcfaaf40bieqn3.gif'/>, whereby the mode continues to nonlinearly grow at a reduced rate over a period of 100 wave periods up to final saturated amplitude. We believe that this may be because the two spatial resonances at <I>s</I>?=?0.4 and <I>s</I>?=?0.8 overlap for sufficiently high fast ion density, and so the phase-space volume and fast ion density available to drive the mode increases.</P>
Conservation and Rewiring of Functional Modules Revealed by an Epistasis Map in Fission Yeast
Roguev, A.,Bandyopadhyay, S.,Zofall, M.,Zhang, K.,Fischer, T.,Collins, S. R.,Qu, H.,Shales, M.,Park, H.-O.,Hayles, J.,Hoe, K.-L.,Kim, D.-U.,Ideker, T.,Grewal, S. I.,Weissman, J. S.,Krogan, N. J. American Association for the Advancement of Scienc 2008 Science Vol.322 No.5900
Han, J.C.,Chen, G.H.,Wang, J.G.,Zhang, J.L.,Qu, H.X.,Zhang, C.M.,Yan, Y.F.,Cheng, Y.H. Asian Australasian Association of Animal Productio 2016 Animal Bioscience Vol.29 No.8
This study was conducted to evaluate the relative bioavailability (RBV) of 25-hydroxycholecalciferol (25-OH-$D_3$) to cholecalciferol (vitamin $D_3$) in 1- to 21-d-old broiler chickens fed with calcium (Ca)- and phosphorus (P)-deficient diets. On the day of hatch, 450 female Ross 308 broiler chickens were assigned to nine treatments, with five replicates of ten birds each. The basal diet contained 0.50% Ca and 0.25% non-phytate phosphorus (NPP) and was not supplemented with vitamin D. Vitamin $D_3$ was fed at 0, 2.5, 5.0, 10.0, and $20.0{\mu}g/kg$, and 25-OH-$D_3$ was fed at 1.25, 2.5, 5.0, and $10.0{\mu}g/kg$. The RBV of 25-OH-$D_3$ was determined using vitamin $D_3$ as the standard source by the slope ratio method. Vitamin $D_3$ and 25-OH-$D_3$ intake was used as the independent variable for regression analysis. The linear relationships between the level of vitamin $D_3$ or 25-OH-$D_3$ and body weight gain (BWG) and the weight, length, ash weight, and the percentage of ash, Ca, and P in femur, tibia, and metatarsus of broiler chickens were observed. Using BWG as the criterion, the RBV value of 25-OH-$D_3$ to vitamin $D_3$ was 1.85. Using the mineralization of the femur, tibia, and metatarsus as criteria, the RBV of 25-OH-$D_3$ to vitamin $D_3$ ranged from 1.82 to 2.45, 1.86 to 2.52, and 1.65 to 2.05, respectively. These data indicate that 25-OH-$D_3$ is approximately 2.03 times as active as vitamin $D_3$ in promoting growth performance and bone mineralization in broiler chicken diets.