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Search Results: 1 - 10 of 27645 matches for " Hu Jinxin "
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Evaluation of Feeding Dairy Cow with Whole Wheat Hay and Alfalfa  [PDF]
Tian Zhang, Deqing Zhang, Jinxin Wang, Qiuling Hou, Yun Wang, Zhiyong Hu, Xueyan Lin, Zhonghua Wang
Advances in Bioscience and Biotechnology (ABB) , 2018, DOI: 10.4236/abb.2018.99029
Abstract: The preliminary results of this laboratory (unpublished) indicate that the nutritional value of whole wheat hay (wheat hay, for short) is very high, and the milk stage is the best period of wheat hay harvest. In this study, we investigated the feeding effect and economic benefits using wheat hay instead of alfalfa diet for dairy cows under the condition of the same energy and crude protein levels. Three types of diets were used: alfalfa diet, wheat hay diet and alfalfa + wheat hay diet. The results showed that the dry matter digestibility of alfalfa diet and alfalfa + wheat hay diet did not differ significantly (P > 0.1), but was significantly higher than that of wheat hay diet (P < 0.05). The wheat hay diet could produce more propionic acid and ammonia nitrogen (P < 0.05) in the rumen, and reduce the ratio of acetic/propionic and nitrogen utilization. There was no significant difference in milk production among the three diets (P > 0.1). There was no significant difference in milk somatic cell count and body condition score among the three groups (P > 0.1). The wheat hay diet could significantly increase milk protein and lactose (P < 0.01). The contents of interleukin-6 in cows fed alfalfa diet and alfalfa + wheat diet were significantly higher than that in cows fed wheat hay diet (P < 0.05). There was no significant difference in interleukinm-6 between in cows fed alfalfa diet and alfalfa + wheat diet (P > 0.05). The use of wheat hay to replace imported alfalfa in whole or in part could save feed costs. Full substitution of alfalfa with wheat hay could have a daily economic benefit of 13.74 yuan.
Comparison among threatened categories of conifers from China

He Xinqiang,Lin Jinxin,Hu Yushi,Wang Xianpu,Li Fazeng,

生物多样性 , 1996,
Abstract: This paper provides a comparison among threatened categories of 141 Chinese coniferous taxa listed by Temperate Tree (WCMC), World List of Threatened Conifer Taxa (CSG) and China Plant Red Data Book (Vol.1). The results show that the categories of some taxa provided by three units are essentially different, because of insufficient data obtained and different criteria of categories accorded. Consequently, the categories of some Chinese conifers were analysed in accordance with the Draft IUCN Red List Categories (Version 2.3, 1994).
Continuous averaging proof of the Nekhoroshev theorem
Jinxin Xue
Mathematics , 2012,
Abstract: In this paper we develop the continuous averaging method of Treschev to work on the simultaneous Diophantine approximation and apply the result to give a new proof of the Nekhoroshev theorem. We obtain a sharp normal form theorem and an explicit estimate of the stability constants appearing in the Nekhoroshev theorem.
Arnold Diffusion in a Restricted Planar Four-Body Problem
Jinxin Xue
Mathematics , 2012,
Abstract: This paper constructs a certain planar four-body problem which exhibits fast energy growth. The system considered is a quasi-periodic perturbation of the Restricted Planar Circular three-body Problem (RPC3BP). Gelfreich-Turaev's and de la Llave's mechanism is employed to obtain the fast energy growth. The diffusion is created by a heteroclinic cycle formed by two Lyapunov periodic orbits surrounding $L_1$ and $L_2$ Lagrangian points and their heteroclinic intersections. Our model is the first known example in celestial mechanics of the a priori chaotic case of Arnold diffusion.
Noncollision Singularities in a Planar Four-body Problem
Jinxin Xue
Mathematics , 2014,
Abstract: In this paper, we show that there is a Cantor set of initial conditions in a planar four-body problem such that all the four bodies escape to infinity in finite time avoiding collisions. This proves the Painlev\'e conjecture for the four-body case, thus settles the conjecture completely.
Existence of noncontractible periodic orbits of Hamiltonian system separating two Lagrangian tori on $T^*\T^n$ with application to non convex Hamiltonian systems
Jinxin Xue
Mathematics , 2014,
Abstract: In this paper, we show the existence of non contractible periodic orbits in Hamiltonian systems defined on $T^*\T^n$ separating two Lagrangian tori under certain cone assumption. Our result answers a question of Polterovich in \cite{P} in a sharp way. As an application, we find periodic orbits of almost all the homotopy types on a dense set of energy level in Lorentzian type mechanical Hamiltonian systems defined on $T^*\T^2$. This solves a problem of Arnold in \cite{A}.
Design and Application of Optimization Software for Substation Operation Mode Based on EMS  [PDF]
Nannan Gao, Jinxin Huang, Hongbo Li
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B133

This paper proposes a kind of optimization software for substation operation mode, which can not only read data on-line from EMS, but also calculate total loss of substations in parallel operation, split operation or individual operation mode. It can also select the most optimized way and feed the conclusion back to EMS to make substations operate in the most optimized way. The software is suitable for optimization of substation in rural power grid.

Modeling and Optimization of Capacitive Converter for Energy Scavenging System  [PDF]
Jinxin Huang, Nannan Gao, Hongbo Li
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B022
Abstract: A new converter with spherical cap for energy scavenging is proposed. Based on the method of separated variables within the torrid coordinate system, a corresponding analytical model for spherical cap converter is further established so as to obtain the analytic expressions of the topology capacitance and the output voltage. The concept of energy increment factor is specifically defined to denote the improvement of energy storage efficiency. With regard to spherical cap converters of different dimensions, the measured values of energy increment factor coincide well with the theoretical equivalents, indicating an effective verification of the proposed analytical model for the spherical cap converter topology.
An RF front-end with an automatic gain control technique for a U/V band CMMB receiver
带自动增益控制的射频前端在CMMB U/V频段接收器中的应用

Zhao Jinxin,Hu Xueqing,Shi Yin,Wang Lei,

半导体学报 , 2011,
Abstract: -本篇文章提出一种带自动增益控制(AGC)和数字控制射频可变增益放大器(RFVGA)的射频前端结构。这种前端结构是应用在中国移动多媒体广播(CMMB)直接下变频接收器中的。RFVGA提供了50dB的增益范围,每一步增益变化为1.6dB。所采用的AGC策略可以改善在CMMB系统中很关键的邻道信号抑制。射频前端由低噪声放大器(LNA), RFVGA,混频器(mixer), 以及AGC 组成。在LNA工作在低增益模式,RFVGA工作在中等增益模式时,射频前端的输入三阶交调点(IIP3)可以达到4.9dBm;当LNA与RFVGA都工作在最高增益模式时,射频前端的双边带噪声系数(NFdsb)低于4dB。本文所展示的射频前端采用0.35μm BiCMOS 工艺制作,电源电压3V,消耗电流25.6mA。

Luo Jinxian,Zhou Zhenlin,Li Zhenlin,Hu Jinxin,

环境科学学报 , 1988,
Abstract: 以pBR322为载体,将抗镉的假单胞杆菌R4染色体的抗镉基因克隆至大肠杆菌HB101,从5000个重组体中筛选出一株抗镉基因克隆株,命名为大肠杆菌HB101(pBC311)。重组质粒pBC311经PstⅠ酶解和琼脂糖凝胶电泳证实抗镉基因位于3.6kb长的PstⅠ片段上。克隆菌株可在含100μg/ml CdCl_2的L-肉汤中生长,其生长停滞期比受体大肠杆菌HB101短得多,说明克隆菌株含有抗镉基因。
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