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Genotypic differences in callus induction and plant regeneration from mature embryos of barley(Hordeum vulgare L.)

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第5期12卷 399-407页

作者： Yong HAN Xiao-li jin fei-bo WU Guo-ping ZHANG Department of Agronomy College of Agriculture and Biotechnology Zhejiang University Hangzhou 310029 China

An efficient induction system and regeneration protocol based on mature barley embryos were *** isolated from mature seeds,dehusked by hand and inoculated with longitudinally bisected sections,showed low contamination and high primary callus-forming *** influences of nine culture media on primary callus induction and germination from the mature embryos of barley cultivars Golden Promise and Zaoshu 3 were *** results showed that the two cultivars had much higher values of primary callus induction in the B16M6D medium as compared to the other eight medium formulations,with a frequency of 74.3% and 78.4% for Golden Promise and Zaoshu 3,***,Zaoshu 3 demonstrated particularly high stability in callus induction over the different media,indicating its potential utilization in callus induction and regeneration for its good agronomic traits and wide *** were significant differences amongst 11 barley genotypes in terms of primary callus induction in the optimum medium,with percentages of callus induction and germination response ranging from 17.9% to 78.4% and 2.8% to 47.4%,*** plantlets of Dong 17,Golden Promise,and Zaoshu 3 were successfully de-veloped from primary calli through embryogenesis,with green plant differentiation frequencies ranging from 9.7% to 21.0% across genotypes.

关键词： Barley Mature embryo Genotypic difference Primary callus Plant regeneration

Impacts of the north migration of China＇s rice production on its ecosystem service value during the last three decades (1980-2014)

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Journal of Integrative Agriculture 2017年第1期16卷 76-84页

作者： FANG Fu-ping FENG jin-fei LI Feng-bo PENG Shao-bing Huazhong Agricultural University Wuhan 430070 P.R. China China National Rice Research Institute Hangzhou 310006 P.R. China

The ecosystem services value （ESV） of rice system has received increasing attention in agricultural policy decision. Over the last three decades, China＇s rice production presented an obviously trend that moving towards north locations. However, the impacts of this migration on the ESV of rice production have not been well documented. In this paper, we analyzed the change of the ESV of rice production in China under ＂north migration＂ and ＂no migration＂ scenarios during 1980-2014 based on long-term historical data. The results showed that both the positive and negative ESVs of rice production were lower under ＂north migration＂ than under ＂no migration＂ scenarios. The total ESV during 1980-2014 was reduced by 15.8%. ＂North migration＂ significantly reduced the area-scaled ESV since the early 1990s; while its impact on yield-scaled ESV was not significant. The effects of＂north migration＂ on ESV showed great spatial variation. The greatest reduction in total and area-scaled ESV was observed in south locations. While the yield-scaled ESVs of most south locations were enhanced under ＂north migration＂ scenario. These results indicated that ＂north migration＂ has generated adverse effects on the ESV of rice production. An adjustment in the spatial distribution is essential to protecting the non-production benefits of rice ecosystem.

关键词： ecosystem service value north migration rice ecosystem spatial variation historical change

Localized Excitations of （2＋1）-Dimensional Korteweg-de Vries System Derived from a Periodic Wave Solution

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Communications in Theoretical Physics 2007年第2期47卷 275-281页

作者： QIANG Ji-Ye fei jin-Xi CAI Gui-Ping ZHENG Chun-Long College of Physics and Mathematics Zhejiang Lishui University Lishui 323000 China Biophysics Department Yunnan Agricultural University Kunming 650201 China Institute of Educational Science Wenzhou University Wenzhou 325035 China

With the aid of an improved projective approach and a linear variable separation method, new types of variable separation solutions （including solitary wave solutions, periodic wave solutions, and rational function solutions） with arbitrary functions for （2＋1）-dimensional Korteweg-de Vries system are derived. Usually, in terms of solitary wave solutions and rational function solutions, one can find some important localized excitations. However, based on the derived periodic wave solution in this paper, we find that some novel and significant localized coherent excitations such as dromions, peakons, stochastic fractal patterns, regular fractal patterns, chaotic line soliton patterns as well as chaotic patterns exist in the KdV system as considering appropriate boundary conditions and/or initial qualifications.

关键词： improved projective approach KdV system chaos soliton fractal

The CFTR polymorphisms poly-T, TG-repeats and M470V in Chinese males with congenital bilateral absence of the vas deferens

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Asian Journal of Andrology 2012年第5期14卷 687-690页

作者： Wu-Hua Ni Lei Jiang Qian-jin fei Jian-Yuan jin Xu Yang Xue-Feng Huang Reproductive Medicine Center The First Affiliated Hospital of Wenzhou Medical CollegeWenzhou 325000China Laboratory of Internal Medicine The First Affiliated Hospital of Wenzhou Medical CollegeWenzhou 325000China

Congenital bilateral absence of the vas deferens （CBAVD） is a frequent cause of obstructive azoospermia, and mutations of the cystic fibrosis transmembrane conductance regulator （CFTR） gene have also been frequently identified in patients with CBAVD. However, the distribution of the CFTR polymorphisms M470V, poly-T, TG-repeats and F508del mutation in the Chinese CBAVD population with presumed low cystic fibrosis （CF） frequency remains to be evaluated. Samples obtained from 109 Chinese infertile males with CBAVD and 104 normal controls were analyzed for the presence of CFTR （TG）m（T）n, M470V and F508del by PCR amplification followed by direct sequencing. Our study showed that the F5OSdel mutation was not found in our patients. The 5T mutation was present with high frequency in Chinese CBAVD patients and IVS8-5T linked to either 12 or 13 TG repeats was highly prevalent among CBAVD patients （97.22% of 72 cases and 96.91% of 97 alleles with IVS8-5T）. Moreover, a statistically significant relationship between TG 12-5T-V470 haplotype and CBAVD was detected. This study indicated that the CFTR polymorphisms poly-T, TG-repeats and M470V might affect the process of CBAVD in the Chinese population.

关键词： CFTR congenital bilateral absence of the vas deferens IVS8-5T male infertility M470V

NADPH homeostasis in cancer:functions,mechanisms and therapeutic implications

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Signal Transduction and Targeted Therapy 2020年第1期5卷 518-529页

作者： Huai-Qiang Ju jin-fei Lin Tian Tian Dan Xie Rui-Hua Xu State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer MedicineSun Yat-sen University Cancer CenterSun Yat-sen University510060 GuangzhouChina Research Unit of Precision Diagnosis and Treatment for Gastrointestinal Cancer Chinese Academy of Medical Sciences510060 GuangzhouChina

Nicotinamide adenine dinucleotide phosphate(NADPH)is an essential electron donor in all organisms,and provides the reducing power for anabolic reactions and redox *** homeostasis is regulated by varied signaling pathways and several metabolic enzymes that undergo adaptive alteration in cancer *** metabolic reprogramming of NADPH renders cancer cells both highly dependent on this metabolic network for antioxidant capacity and more susceptible to oxidative *** the unique NADPH homeostasis of cancer cells might be an effective strategy to eliminate these *** this review,we summarize the current existing literatures on NADPH homeostasis,including its biological functions,regulatory mechanisms and the corresponding therapeutic interventions in human cancers,providing insights into therapeutic implications of targeting NADPH metabolism and the associated mechanism for cancer therapy.

关键词： homeostasis therapeutic metabolism

Design strategies of high-performance lead-free electroceramics for energy storage applications

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Rare Metals 2024年第3期43卷 853-878页

作者： Biao Guo fei jin Li Li Zi-Zhao Pan Xin-Wei Xu Hong Wang Department of Materials Science and Engineering College of EngineeringSouthern University of Science and TechnologyShenzhen518055China School of Microelectronics and State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an710049China

A greater number of compact and reliable electrostatic capacitors are in demand due to the Internet of Things boom and rapidly growing complex and integrated electronic systems,continuously promoting the development of high-energy-density ceramic-based *** significant successes have been achieved in obtaining high energy densities in lead-based ferroelectric ceramics,the utilization of lead-containing ceramies has been restricted due to environmental and health hazards of ***-free ferroelectric ceramics have garnered tremendous attention and are expected to replace lead-based ceramics in the near ***,the energy density of lead-free ceramics is still lagging behind that of lead-containing ***,severely limiting their *** efforts have been made to enhance the energy storage performance of lead-free ceramics using multi-scale design strategies,and exciting progress has been achieved in the past *** review briefly discusses the energy storage mechanism and fundamental characteristics of a dielectric capacitor,summarizes and compares the state-of-the-art design strategies for high-energy-density lead-free ceramics,and highlights several critical issues and requirements for industrial *** prospects and challenges of lead-free ceramics for energy storage applications are also discussed.

关键词： Dielectric materials Lead-free ceramic Environment friendly Energy storage Design strategy

La_(0.7)Ca_(0.3)MnO_(3-δ):Ag nanocomposite thin films with large temperature coefficient of resistance(TCR)

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Journal of Materiomics 2022年第4期8卷 799-805页

作者： fei jin Duojie Wu Yani Lu Zizhao Pan Meng Gu Hong Wang State Key Laboratory for Mechanical Behavior of Materials School of Electronic and Information EngineeringXi'an Jiaotong UniversityXi'an710049China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen518055GuangdongChina Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices&Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and TechnologyShenzhen518055GuangdongChina Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming650093YunnanChina

In this work, oxygen vacancy-regulated La_(0.7)Ca_(0.3)MnO_(3-δ):Ag (LCMO:A) nanocomposite thin films onLaAlO_(3) (001) substrates were investigated to obtain films with large temperature coefficient of resistance(TCR) values. LCMO:A nanocomposite thin films were synthesized using pulsed laser deposition, andoxygen pressures during film deposition and annealing steps were optimized. As oxygen pressuresincreased, lattice parameter increased from 70 Pa to 100 Pa, Tp increased monotonically from 168 K to282 K, and average Mn^(4+) concentration in the film increased as indicated by X-ray photoemissionspectroscopy data. Record high TCR value of ~37% K^(-1) was achieved in LCMO:A nanocomposite thin filmprepared with optimal oxygen pressures, making this film promising candidate for applications inbolometers.

关键词： La_(0.7)Ca_(0.3)MnO_(3) Metal-insulator transition temperature Oxygen vacancies Temperature coefficient of resistance

Improvement in structure and superconductivity of YBa2Cu3O6＋δ ceramics superconductors by optimizing sintering processing

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Journal of Rare Earths 2017年第1期35卷 85-89页

作者： jin fei ZHANG Hui WANG Wenzhang LIU Xiang CHEN Qingming Faculty of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 China

Polycrystalline YBa2Cu3O6＋δbulks were synthesized by sol-gel method. Sintering processing played a vital role in the evolution of phase structure and microstructure, and thus significantly influenced their superconducting properties. The influence of calcination temperature, sintering temperature, on the bulks structure, morphology and superconducting behaviors were investigated. The results showed that the oxygen content drastically increased with calcination temperature and sintering temperature. The SEM images revealed that the grains grew up monotonously with increase of calcination temperature. With increased calcination and sintering temperature, the resistivity was reduced gradually and the superconducting properties increased. Moreover, it was found that the optimal superconducting properties（with the highest superconducting transition temperature Tc^onset and the narrowest transition width ΔT） were obtained at calcination temperature of 900℃ and sintering temperature of 950 ℃.

关键词： YBa2Cu3O6+δ sol-gel method sintering processing superconducting property rare earths

Ensemble Simulations of a Nonlinear Barotropic Model for the North Atlantic Oscillation

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Atmospheric and Oceanic Science Letters 2010年第5期3卷 277-282页

作者： ZHANG Dong-Bin jin fei-fei LI Jian-Ping DING Rui-Qiang State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics （LASG） Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Department of Meteorology University of Hawaii at Manoa Honolulu Hi 96822 USA

A numerical ensemble-mean approach was employed to solve a nonlinear barotropic model with chastic basic flows to analyze the nonlinear effects in the formation of the North Atlantic Oscillation （NAO）. The nonlinear response to external forcing was more similar to the NAO mode than the linear response was, indicating the importance of nonlinearity. With increasing external forcing and enhanced low-frequency anomalies, the effect of nonlinearity increased. Therefore, for strong NAO events, nonlinearity should be considered.

关键词： ensemble-mean NAO nonlinearity