玉米是世界上重要的禾谷类作物之一，单产居禾谷类作物之首。玉米是黑龙江省第一大粮食作物，种植面积和产量都是全国第一位。随着生产条件的改善和产量水平的提高，气候因子对玉米
Starting with the extended homogeneous balance method and a variable separation approach, a general variable separation solution of the Broer-Kaup system is der
A statistical theory of the blue phase of chiral liquid crystal is proposed. The form of the interaction potential between molecules is assumed to be the same a
海表叶绿素的反演及其时空变化分析,在海洋-大气系统的碳循环、赤潮灾害监测等方面具有重要意义.本文选择海南岛西南海域作为研究区,采用MODIS 250 m分辨率数据,基于研究区内
To improve the performance of double clad high power fibre lasers, inner cladding design plays a significant role.A triangular inner cladding and silica structu
We have investigated the persistent current in a mesoscopic ring with a side-coupled quantum dot. The problems are probed by using the one-impurity Anderson Ham
Yield strengths in unpassivated and 530 nm TiN passivated Cu films deposited on Ti, high-speed steel and Ni substrates have been measured by x-ray diffraction (
In this paper we have studied the phased t U Hubbard model. Using the constrained path Monte Carlo method,we investigated the effects of phase factor on pairing
磷素作为甘蔗生长发育的必需肥料元素之一,在甘蔗生长发育的各个阶段起着至关重要的作用,如适量施磷不仅可以促进甘蔗根、茎、叶等组织器官的形态建成,而且可以有效改善甘蔗茎径、有效茎数、单茎重,进而贡献于甘蔗产量的增加。研究者们对我国多个蔗区调查研究发现,大部分蔗区的有效磷含量仍处于中等以下水平,且蔗区的磷素利用效率也相对低下,仅为6.7%-15.3%。近年来,人们通过对一些模式植物拟南芥、水稻进行研究发
Electron-induced Hf-, W-L-shell partial, total production cross sections, mean ionization cross sections and HfLa-shell ionization cross sections (at two energi