This paper investigates the photorefractive properties of iron doped lithium niobate with different [Li]/[Nb] ratios.The experimental results show two photorefr
臭氧浓度不断升高改变作物生长环境,进而影响产量和品质。臭氧胁迫使重要粮食作物水稻的产量明显下降,但对稻米品质的影响报道较少。研究表明,臭氧胁迫下水稻品质存在总体变劣的趋势,但这种趋势是否因籽粒在稻穗上的着生部位或栽培条件而异尚不清楚。为此,本文利用自然光人工气室,设计品种(试验I)和施氮量(试验II)两个试验对此进行研究,旨在为高臭氧浓度环境下水稻的优质栽培提供实验依据。试验I以臭氧处理(对照、1
We investigate the energy exchange between (3+1)D colliding spatiotemporal solitons (STSs) in dispersive media with cubic-quintic (CQ) nonlinearity by numerical
微小分子RNAmicroRNAs（miRNAs）通过与特定作用靶基因依据序列特异性反向互补方式结合，对靶基因在转录后和翻译水平上进行调节，在调控真核生物生长、发育以及应答环境因子过程中发挥重要作用。本项研究以在国际miRNAs库中获得的32个小麦种属miRNAs为基础，较系统研究了上述小麦miRNAs（TaMIRs）在不同供磷水平下的表达特征，鉴定了对低磷逆境产生明显应答的TaMIRs及其可能作用
In this paper,single-walled carbon nanotubes (SWCNTs) are studied through molecular dynamics (MD) simulation.The simulations are performed at temperatures of 1
By considering higher-order effects, the properties of self-similar parabolic pulses propagating in the microstructured fibre amplifier with a normal group-velo
A photonic crystal fibre Brillouin laser based on fibre Bragg grating Fabry-Perot cavity is presented. A highly nonlinear photonic crystal fibre 25 m in length