Apoptosis and Mammary Gland

Cho, K. K 韓國酪農學會 1998 韓國酪農學會誌 Vol.20 No.4

Evaluation of mango saponin in broilers: effects on growth performance, carcass characteristics, meat quality and plasma biochemical indices

Y.N. Zhang,J. Wang,B. Qi,S.G. Wu,H.R. Chen,H.Y. Luo,D.J. Yin,F.J. Lu,H.J. Zhang,G.H. Qi 아세아·태평양축산학회 2017 Animal Bioscience Vol.30 No.8

Objective: The objective of the present study was to determine whether mango saponin (MS) could be used as a feed additive in broiler chicks by evaluating growth performance, carcass characteristics, meat quality, and plasma biochemical indices. Methods: A total of 216 1-d-old Arbor Acres male broiler chicks were randomly assigned into three dietary treatments supplemented with 0 (control), 0.14% (MS 0.14%), or 0.28% (MS 0.28%) MS. Each treatment had six replicates (cages) with 12 chicks each. The feeding trial lasted for six weeks. Results: Compared with the control, dietary supplemented with 0.14% or 0.28% MS increased average daily weight gain of chicks in the grower (22 to 42 d) and the whole (1 to 42 d) phases, and the final body weight of chicks on d 42 was higher in MS supplemented groups (p<0.05). Lower L45 min* (lightness) and L24 h* values, lower b24 h* (yellowness) value, and higher a45 min* (redness) and a24 h* values of the breast muscle were observed in chicks fed with 0.28% MS on d 42 (p<0.05). The total antioxidant capacity in plasma increased in MS 0.14% group on d 21 (p<0.001). Lower contents of plasma total cholesterol and triglyceride were observed in chicks fed with 0.28% MS on d 21 and d 42, whereas the group supplemented with 0.14% MS only decreased plasma triglyceride content on d 21 (p<0.05). The glucose content in plasma decreased in MS 0.28% group on d 42 (p<0.001). Conclusion: Overall, MS could be used as a feed additive in broiler chicks, and the supplemental level of 0.28% MS in diet could improve growth performance, meat quality, and plasma lipid metabolism in broiler chicks.

ROBUST CONTROL FOR 4WS VEHICLES CONSIDERING A VARYING TIRE-ROAD FRICTION COEFFICIENT

G.-D. YIN,N. CHEN,J.-X. WANG,J.-S. CHEN 한국자동차공학회 2010 International journal of automotive technology Vol.11 No.1

A μ-synthesis for four-wheel steering (4WS) problems is proposed. Applying this method, model uncertainties can be taken into consideration, and a μ-synthesis robust controller is designed with optimized weighting functions to attenuate the external disturbances. In addition, an optimal controller is designed using the well-known optimal control theory. Two different versions of control laws are considered here. In evaluations of vehicle performance with the robust controller, the proposed controller performs adequately with different maneuvers (i.e., J-turn and Fishhook) and on different road conditions (i.e., icy, wet, and dry). The numerical simulation shows that the designed μ-synthesis robust controller can improve the performance of a closed-loop 4WS vehicle, and this controller has good maneuverability, sufficiently robust stability, and good performance robustness against serious disturbances.

Research on simulation and experiment for surface topography machined by a novel point grinding wheel

Y. D. Gong,G. Q. Yin,X. L. Wen,M. Han,J. B. Yan,J. Cheng 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.10

Grains motion path will be changed in the point grinding process due to the existence of variable angle α. To verify the difference betweenpoint grinding and traditional grinding, the moving relationship and coordinate transformation between grinding wheel and workpieceare used to put the grain movement function equivalent to parabola, then point grinding cutting path is concluded. Based on grainsdistribution on the grinding wheel surface, the 3D geometry simulation topography of workpiece is obtained by extending the effectiveinterference trails along the axial direction. Furthermore, a vitrified bond CBN wheel with a coarse grinding area angle θ is proposed andthe principle of design and preparation of these novel grinding wheels are studied. The typical processing parameters are chosen to grindQT700 ladder shaft; the simulation results are verified by using the VHX-1000E microscope and the non-contact 3D surface profilometerto observe the workpiece surface topography and measure the surface roughness. The results indicated that the simulation microstructurescoincide well with the experimental measurements and the values of simulation roughness are 0.5 times of experiments. So, the geometricsimulation model provided an auxiliary and prediction method for the actual processing topography analysis. In addition, grindingwheels with different θ are used to grind ladder shafts with a series of grinding parameters. The influence trend of inclining angle α, cuttingdepth ap, axial feeding speed vf and grinding wheel speed vs on surface roughness is obtained. It is concluded that the values ofworkpiece surface roughness using novel grinding wheel are less than using the traditional grinding wheel under the condition of thesame processing parameters.

Analysis of trace impurities in neon by a customized gas chromatography

Yin, M.K.,Lim, J.S.,Moon, D.M.,Lee, G.H.,Lee, J. Elsevier 2016 Journal of Chromatography A Vol.1463 No.-

<P>Excimer lasers, widely used in the semiconductor industry, are crucial for analyzing the purity of premix laser gases for the purpose of controlling stable laser output power. In this study, we designed a system for analyzing impurities in pure neon (Ne) base gas by customized GC. Impurities in pure neon (H-2 and He), which cannot be analyzed at the sub-mu mol/mol level using commercial GC detectors, were analyzed by a customized pulsed-discharge Ne ionization detector (PDNeD) and a pressurized injection thermal conductivity detector using Ne as the carrier gas (Pres. Inj. Ne-TCD). From the results, trace species in Ne were identified with the following detection limits: H-2, 0.378 mol/mol; O-2, 0.119 mu mol/mol; CH4, 0.880 mu mol/mol; CO, 0.263 mu mol/mol; CO2, 0.162 mu mol/mol (PDNeD); and He, 0.190 mu mol/mol (Pres. Inj. Ne-TCD). This PDNeD and pressurized injection Ne-TCD technique thus developed permit the quantification of trace impurities present in high-purity Ne. (C) 2016 Published by Elsevier B.V.</P>

Multiferroic tunnel junctions and ferroelectric control of magnetic state at interface (invited)

Yin, Y. W.,Raju, M.,Hu, W. J.,Burton, J. D.,Kim, Y.-M.,Borisevich, A. Y.,Pennycook, S. J.,Yang, S. M.,Noh, T. W.,Gruverman, A.,Li, X. G.,Zhang, Z. D.,Tsymbal, E. Y.,Li, Qi American Institute of Physics 2015 Journal of Applied Physics Vol.117 No.17

Research on force and temperature characteristics of novel point grinding wheels

G. Q. Yin,Y. D. Gong,Y. W. Li,J. Cheng 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.8

We propose a novel point grinding wheel (NPGW) with coarse grinding zone angle θ. According to earlier studies, this type of grinding wheel has high grinding efficiency, long service life, and generates very little surface roughness. The contact zone between the grinding wheel and workpiece is modified by the addition of the NPGW with the coarse grinding zone angle θ and the inclined angle α of point grinding process, and as a result, grinding force and grinding zone temperature are also altered. The grinding force theoretical model of NPGW was established and the grinding zone temperature was simulated by the finite element method, based on the theory of grinding heat generation and distribution and triangular heat source distribution model. At the same time, seven pieces of NPGW with different angles θ used for grinding experiments were fabricated. The theoretical model of grinding force and the simulation of grinding temperature coincided with experimental results. Therefore, the grinding force theoretical model and the grinding temperature simulation provide an auxiliary and predictive method for the actual process. Moreover, the influence of parameters on grinding force and grinding zone temperature can be obtained, and the results indicate that the NPGW and point grinding process can reduce grinding force and grinding zone temperature. Finally, plastic deformation is attributed to the production of compressive stress and grinding heat is attributed to the production of tensile stress. Therefore, the residual stress is influenced by the grinding force and the grinding temperature coupled. The residual stress of workpiece surface and subsurface was studied. In conclusion, the NPGW and point grinding process can reduce residual stress of workpiece surface and subsurface, in the case of tensile and compressive stress.

Enhanced tunnelling electroresistance effect due to a ferroelectrically induced phase transition at a magnetic complex oxide interface

Yin, Y. W.,Burton, J. D.,Kim, Y-M.,Borisevich, A. Y.,Pennycook, S. J.,Yang, S. M.,Noh, T. W.,Gruverman, A.,Li, X. G.,Tsymbal, E. Y.,Li, Qi Nature Publishing Group 2013 NATURE MATERIALS Vol.12 No.5

The range of recently discovered phenomena in complex oxide heterostructures, made possible owing to advances in fabrication techniques, promise new functionalities and device concepts. One issue that has received attention is the bistable electrical modulation of conductivity in ferroelectric tunnel junctions (FTJs) in response to a ferroelectric polarization of the tunnelling barrier, a phenomenon known as the tunnelling electroresistance (TER) effect. Ferroelectric tunnel junctions with ferromagnetic electrodes allow ferroelectric control of the tunnelling spin polarization through the magnetoelectric coupling at the ferromagnet/ferroelectric interface. Here we demonstrate a significant enhancement of TER due to a ferroelectrically induced phase transition at a magnetic complex oxide interface. Ferroelectric tunnel junctions consisting of BaTiO<SUB>3</SUB> tunnelling barriers and La<SUB>0.7</SUB>Sr<SUB>0.3</SUB>MnO<SUB>3</SUB> electrodes exhibit a TER enhanced by up to ~ 10,000% by a nanometre-thick La<SUB>0.5</SUB>Ca<SUB>0.5</SUB>MnO<SUB>3</SUB> interlayer inserted at one of the interfaces. The observed phenomenon originates from the metal-to-insulator phase transition in La<SUB>0.5</SUB>Ca<SUB>0.5</SUB>MnO<SUB>3</SUB>, driven by the modulation of carrier density through ferroelectric polarization switching. Electrical, ferroelectric and magnetoresistive measurements combined with first-principles calculations provide evidence for a magnetoelectric origin of the enhanced TER, and indicate the presence of defect-mediated conduction in the FTJs. The effect is robust and may serve as a viable route for electronic and spintronic applications.

Experimental study on fabrication and evaluation of a micro-scale shaft grinding tool

Y. D. Gong,X. L. Wen,J. Cheng,G. Q. Yin,C. Wang 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.3

This paper presents a micro-grinding experiment on AISI 1020 steel and Ti-6Al-4V to study micro-grinding principle and the changerule of the force and surface with different grinding parameters. A novel micro shaft grinding tool is fabricated by cold sprayed withCBN grains, the manufacturing is carried out on a desktop micro machine developed by NEU. Influences caused by particle size on surfacequality has been discussed, it has been tested that low surface roughness could be achieved on 3000 particle size of micro shaftgrinding tool, the roughness of AISI 1020 steel accomplished in the experiment is about 0.086 μm. Measured micro-grinding force of Ti-6Al-4V decreases with the increasing spindle speed and the decreasing cutting depth. The surface roughness decreases with the increasingspindle speed and the decreasing feed rate. The minimum surface roughness is 325 nm with the spindle speed of 48000 r/min and thefeed rate of 20 μm/s.

중국의 신농촌건설과 빈곤퇴치 문제

윤의곤 ( Yin I. K. ),허국동 ( G. D. Xu ),이병오 ( B. O. Lee ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2016 강원 농업생명환경연구 Vol.28 No.3

Poverty management and alleviation is a challenge and obligation for many countries in the development. The poor areas in China are mostly in the rural. This paper studies the poverty management in China`s new rural construction. Since the rural areas are still considerably poor, this paper believes China should make good use of national finance and social resources, and determine the alleviation and investment priority according to the levels of poverty in different places. By grey relational analysis, this paper aims at providing relevant theories on poverty management for Chinese government based on the facts that the investments first come to skill training and technology promotion, followed by forestry, plantation and labor maintenance.