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Co-silencing E1 and its homologs in an extremely late-maturing soybean cultivar confers super-early maturity and adaptation to high-latitude short-season regions

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Journal of Integrative Agriculture 2022年第2期21卷 326-335页

作者： LIU Li-feng GAO Le ZHANG Li-xin cai Yu-peng SONG Wen-wen CHEN Li YUAN Shan WU Ting-ting JIANG Bing-jun SUN Shi WU Cun-xiang HOU Wen-sheng HAN Tian-fu Key Laboratory of Soybean Biology(Beijing) Ministry of Agriculture and Rural Affairs/Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081P.R.China College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193P.R.China

Soybean(Glycine max(L.) Merr.), a typical short-day plant, is sensitive to photoperiod, which limits the geographical range for its cultivation. In the flowering pathway regulated by photoperiod, E1, a flowering inhibitor in soybean, plays the dominant role in flowering time regulation. Two E1 homologs, E1-like-a(E1 La) and E1-like-b(E1 Lb), play overlapping or redundant roles in conjunction with E1. In the present study, E1 and E1 La/b were simultaneously silenced via RNA interference(RNAi) in Zigongdongdou(ZGDD), an extremely late-flowering soybean landrace from southern China. As a result, RNAi lines showed a much earlier-flowering phenotype and obvious photoperiod insensitivity compared with wild-type(WT) plants. In RNAi transgenic plants, the expression levels of flowering inhibitor GmFT4 and flowering promoters Gm FT2a/Gm FT5a were significantly down-and up-regulated, respectively. Further, the maturity group(MG) of the RNAi lines was reduced from WT ZGDD’s MG Ⅷ(extremely late-maturity) to MG 000(super-early maturity), which can even grow in the northernmost village of China located at a latitude of 53.5°N. Our study confirms that E1 and E1 La/b can negatively regulate flowering time in soybean. The RNAi lines generated in this study, with early flowering and maturity traits, can serve as valuable materials and a technical foundation for breeding soybeans that are adapted to high-latitude short-season regions.

关键词： soybean RNA interference E1 E1La/b flowering time

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SMART/ASTC dynamic soft reduction technology and its application on the bloom continuous caster at Pangang

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Journal of University of Science and Technology Beijing 2006年第2期13卷 121-124页

作者： Guijun Li Kaijian Zhang Chuanfi Han Yong Chen Guoyan Zhao Kaike cai Metallurgical and Ecological Engineering School University of Science and Technology Beijing Beijing 100083 China Panzhihua Iron ＆ Steel Co. Panzhihua Sichuan 617000 China

The SMART/ASTC dynamic soft reduction technology of VAI and its application on the 6-strand bloom continuous caster at Pangang, China are presented. The operation results show that soft reduction technology is effective to improve the inner quality of continuously cast blooms. At Pangang, both the central porosity and the central segregation ratings are no more than 1.0, the central shrinkage cavity rating is no more than 0.5, and the central segregation index of carbon is no more than 1.05. Rails made from the blooms have excellent quality and are used for high-speed tracks.

关键词： bloom continuous casting dynamic soft reduction heavy rail steel

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Comparison of various procedures for progressive collapse analysis of cable-stayed bridges

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第5期13卷 323-334页

作者： Jian-guo cai Yi-xiang XU Li-ping ZHUANG Jian FENG Jin ZHANG Key Laboratory of C&PC Structures of Ministry of Education Southeast University Nanjing 210096 China Department of Civil Engineering Strathclyde University Glasgow UK

Alternate path(AP) method is the most widely used method for the progressive collapse analysis,and its application in frame structures has been well ***,the application of AP method for other structures,especially for cable-stayed structures,should be further *** four analytical procedures,i.e.,linear static,nonlinear static,linear dynamic,and nonlinear dynamic were firstly improved by taking into account the initial *** a cable-stayed structure was studied using the four improved ***,the losses of both one cable and two cables were *** results show that for static and dynamic analyses of the cable-stayed bridges,there is large difference between the results obtained from simulations starting with either a deformed or a nondeformed configuration at the time of cable *** static results are conservative in the vicinity of the ruptured cable,but the dynamic effect of the cable loss in the area farther away from the loss-cable cannot be ***,the dynamic amplification factor of 2.0 is found to be a good estimate for static analysis procedures,since linear static and linear dynamic procedures yield approximately the same maximum vertical *** results of the comprehensive evaluation of the cable failure show that the tread of the progressive failure of the cable-stayed bridges decreases when the location of the failed cables is closer to the pylon.

关键词： Progressive failure Structural failures Collapse Linear analysis Nonlinear analysis Dynamic analysis Cable-stayed bridges

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A CAD System for Tube Drawing Based on Finite Element Simulation of Drawing Process

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Journal of Iron and Steel Research International 2001年第1期8卷 27-33页

作者： HAN Bao-yun JIN Ming WU You-cai ZHONG Qian-xia Central Iron & Steel Research Institute

Acicular Ferrite (AF) is beneficial in welds because it provides a tough and strong microstructure. Therefore, much works have been done in the study of the effect of alloying elements and welding conditions aimed at obtaining more AF in the weld metal. However, the knowledge about the nature of AF is limited due to the lack of kinetics researches. In this paper, the kinetic curves of AF transformation in an X65 weld metal were established by means of welding thermal simulation test. The results showed that AF transformation is a typical diffusion process of nucleation and growth with incubation period. AF transformation in weld metal obeys the relationship described by JMA Equation. The effect of welding heat input was also studied.

关键词： weld metal acicular ferrite kinetics pipe steel

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Results of 23 yr of Pulsar Timing of PSR J1453-6413

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Research in Astronomy and Astrophysics 2023年第10期23卷 357-366页

作者： Wei Li Shi-jun Dang Jian-Ping Yuan Lin Li Wei-Hua Wang Lun-Hua Shang Na Wang Qing-Ying Li Ji-Guang Lu Fei-Fei Kou Shuang-Qiang Wang Shuo Xiao Qi-jun Zhi Yu-Lan Liu Ru-Shuang Zhao Ai-jun Dong Bin Zhang Zi-Yi You Yan-Qing cai Ya-Qin Yang Ying-Ying Ren Yu-Jia Liu Heng Xu School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550001China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550001China Guizhou Radio Astronomy Observatory Guizhou UniversityGuiyang 550025China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China School of Physics Science and Technology Xinjiang UniversityUrumqi 830046China College of Mathematics and Physics Wenzhou UniversityWenzhou 325035China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China

In this paper,we presented the 23.3 yr of pulsar timing results of PSR J1456-6413 based on the observations of Parkes 64 m radio *** detected two new glitches at MJD 57093(3)and 59060(12)and confirmed its first glitch at MJD 54554(10).The relative sizes(Δν/ν)of these two new glitches are 0.9×10^(-9)and 1.16×10^(-9),*** the“Cholesky”timing analysis method,we have determined its position,proper motion,and two-dimensional transverse velocities from the data segments before and after the second glitch,***,we detected exponential recovery behavior after the first glitch,with a recovery timescale of approximately 200 days and a corresponding exponential recovery factor Q of approximately 0.15(2),while no exponential recovery was detected for the other two *** interestingly,we found that the leading component of the integral pulse profile after the second glitch became stronger,while the main component became *** results will expand the sample of pulsars with magnetosphere fluctuation triggered by the glitch event.

关键词： Stars (stars:)pulsars:individual(PSR J1453-6413) stars:neutron

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Quantum state manipulation of single-Cesium-atom qubit in a micro-optical trap

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Frontiers of physics 2014年第5期9卷 634-639页

作者： Zhi-Hui Wang Gang Li Ya-Li Tian Tian-cai Zhang State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi University Taiyuan 030006 China

Based on single Cesium atoims trapped in a 1064 nm microscopic optical trap we have exhibited a single qubit encoded in the Cesium ＂clock states＂. The single qubit initialization, detection and the fast state rotation with high efficiencies are demonstrated and this state manipulation is crucial for quantmn information processing. The ground ~ates Rabi flopping rate of 229.0 ± 0.6 kHz is realized hy a two-photon Raman process. A clock states dephasing time of 3.0 ± 0.7 ms is measured, while all irreversible homogeneous dephasing time of 124 ± 17 ms is achieved by using the spin-echo technique. This well-controlled single atom provides an ideal quantmn qubit and quantmn node for quantum information processing.

关键词： qubit single atom Rabi flopping spin-echo dephasing time

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LONGITUDINAL WAVE PROPAGATION IN ADHESIVE STRUCTURE UNDER DIFFERENT FORMS OF INTERFACES

LONGITUDINAL WAVE PROPAGATION IN ADHESIVE STRUCTURE UNDER DI...

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2015全国压电和声波理论及器件技术研讨会

作者： jun-cai DING Bin WU Cun-fu HE College of Mechanical Engineering and Applied Electronic Technology Beijing University of Technology

The description of the wave propagation in the multilayer adhesive structure under different forms of interfaces is very *** this issue,the reflection and transmission coefficient expressions of longitudinal and transverse waves with the dimensionless parameter ofωτin the trilaminar plate-like adhesive structure are derived when the adhesive layer is assumed to be viscoelastic material with a relaxed time ofτ.Aluminum-epoxy resin-polystyrene adhesive structure is taken as an example to analyze the impact of changes in the angle of incidence on acoustic wave reflection and transmission *** results show that regardless of the value ofωτ,interface form can not be identified in the case of normal incidence or grazing incidence of longitudinal *** a particular products of frequency-thickness,if the angle of incidence is appropriate,the methods of reflection and transmission coefficients of longitudinal wave or transverse wave reflection coefficient can be adopted to detect the perfect,sliding and weak bonding *** results provide a theoretical basis for the experiment of the adhesive structure by means of ultrasonic testing.

关键词： Adhesive structure Viscoelastic body Dimensionless parameters Reflection and transmission coefficients

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A Novel Design Strategy for Temperature-Responsive IPN Hydrogels Based on a Copolymer of Acrylamide and N-(1,1-Dimethyl-3-Oxobutyl)-Acrylamide

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Advances in Chemical Engineering and Science 2018年第4期8卷 255-270页

作者： Yu Wang Huifang Xia jun Zhao Xiuqin cai Shengke Chen Bengxiu Li School of Chemistry and Materials Sciences Guizhou Education University Guiyang China Anshun Engineering Research Centre of Concrete Admixture Anshun China School of Chemistry and Materials Science Weinan Normal University Weinan China GuizhouTiejinahengfa New Material Technology Co. Ltd. Anshun China

A methology is described for the synthesis of novel temperature-responsive interpenetrating polymer network (IPN) hydrogels with poly(2-acrylamido- 2-methylpropane sulfonic acid) (PAMPS) as a tightly crosslinked 1st network, temperature-responsive poly(acrylamide-co-N-(1,1-dimethyl-3-oxobutyl)- acrylamide) (P(AM-co-DAAM)) with low cost as a lossely crosslinked 2nd network. The structure and morphology of the IPN hydrogels were characterized by FTIR, TGA and SEM, and the results indicated that PAMPS network introduced P(AM-co-DAAM) hydrogels have large, thermally stable and interconnected porous network. The properties of the IPN hydrogels, which include: swelling capacity, equilibrium swelling/deswelling ratio, temperature- responsive behavior, and the dwelling kinetics as specific temperature, were investigated carefully. Results showed that the obtained IPN hydrogels displayed a controllable equilibrium swelling/deswelling behavior and possessed remarkable thermosensitivity. In addition, the results also indicate that the incorporation of the hydrophobic groups DAAM has a big effect on the LCST of the IPN hydrogels. Consequently, these novel temperature-responsive IPN hydrogels with low cost and slow-releasing performance would be promising for potential applications, such as environmental catalysis, water treatment, and agriculture.

关键词： Temperature-Responsive Hydrogel Interpenetrating Polymer Network Equi-librium Swelling Ratio Slow-Releasing Performance

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教会大学与中国近代建筑形态的转型

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暨南学报（哲学社会科学版） 2007年第6期29卷 116-123页

作者：陈才俊暨南大学中国基督教史研究中心广东广州510632

教会大学建筑是19世纪末至20世纪上半叶出现在中国的一种新型建筑形态,是西方传教士与建筑师糅合西方建筑理念与东方建筑元素而形成的现代建筑样式,是中西文化双向成功交流的典范例证和有形史料。该建筑形态早期呈现中西合璧式风格,并... 详细信息

教会大学建筑是19世纪末至20世纪上半叶出现在中国的一种新型建筑形态,是西方传教士与建筑师糅合西方建筑理念与东方建筑元素而形成的现代建筑样式,是中西文化双向成功交流的典范例证和有形史料。该建筑形态早期呈现中西合璧式风格,并逐渐导致中国传统建筑艺术的复兴,具有建筑学上的特异性、稳定性和连续性特征,被视为弘扬中国传统文化的表象参照物。教会大学建筑将西方的大学校园设计理念与建筑技艺引入中国,开启中国近代建筑的一个全新领域——大学建筑,不仅深刻地影响了中国近代大学的校园规划与建设,而且极大地促进了中国近代建筑形态的转型。

关键词：教会大学传教士建筑形态大学建筑

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Effect of CeO_2 on heat transfer and crystallization behavior of rare earth alloy steel mold fluxes

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International Journal of Minerals,Metallurgy and Materials 2019年第5期26卷 565-572页

作者： Ze-yun cai Bo Song Long-fei Li Zhen Liu Xiao-kang Cui School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

To improve the heat transfer capability and the crystallization property of the traditional mold flux, CaF_2 was replaced with B_2O_3. Then, the influences of CeO_2 on the heat transfer and the crystallization of the CaF_2-bearing mold flux and the new mold flux with 10 wt% B_2O_3 were studied using a slag film heat flux simulator and X-ray diffraction(XRD). The results revealed that the addition of CeO2 reduced the heat transfer by increasing the solid slag thickness and the crystallization of two mold fluxes. However, CeO_2 had less effect on the B_2O_3-containing mold flux compared with the CaF_2-bearing mold flux. According to the analyses, the CeO_2 contents in the CaF_2-bearing mold flux and the B_2O_3-containing mold flux should not exceed 8 wt% and 12 wt%, respectively. Therefore, these experimental results are beneficial to improve and develop the mold flux for casting rare earth alloy steels.

关键词： cerium oxide boron trioxide mold fluxes heat transfer crystallization rare earth alloy steels

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