Specifications

Publisher: Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract: In order to obtain remarkable electric field biological effect on crop seeds, the basic
characteristics of natural potential fluctuations in maize seedlings were studied by analyzing the
wavelet de-noising and power spectrum. The results showed that the power spectrum of natural
potential fluctuations in maize seedlings was mainly distributed in 0~1 Hz with a gravity
frequency of 0.2 Hz. Based on the potential fluctuation characteristics, extremely low frequency
pulsed electric field of 100 kV/m and 0.2 Hz was used to treat germinating maize seeds. It was
found that the seed germination process was significantly promoted: on the 5th day of
germination, the fresh mass, shoot length and root length of germinating maize seed respectively
increased by 17.55%, 60.13% and 28.50% compared with those of the control group. Analysis
results of ultraweak luminescence(UL) changes in the geminating seeds showed that the
ultraweak luminescence was promoted by the pulsed electric field: the spontaneous
luminescence and the integrated intensity of delayed luminescence of the germinating maize
seed respectively increased by 68.84% and 33.93% compared with those of the control group on
the 5th day of germination. The promotion implied that the 0.2 Hz extremely low frequency
pulsed electric field accelerated the DNA synthesis reaction and cell metabolism of the
germinating seeds. It is concluded that the coupled resonance between pulsed electric field and
plant natural potential may be the cause of the extremely low frequency pulsed electric field's
biological effects.
Number of references: 21
Main heading: Seed
Controlled terms: Cultivation - Electric fields - Luminescence - Power spectrum -
Synthesis (chemical)
Uncontrolled terms: Biological effects - Coupled resonance - Maize - Plant potentials
- Pulsed electric field - Ultraweak luminescence
Classification code: 921 Mathematics - 821.4 Agricultural Products - 821.3 Agricultural
Methods - 941 Acoustical and Optical Measuring Instruments - 802.2 Chemical Reactions
- 711 Electromagnetic Waves - 701.1 Electricity: Basic Concepts and Phenomena - 741.1
Light/Optics
DOI: 10.3969/j.issn.1003-6520.2013.01.019
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
18.
Accession number: 20131016090448
Title: Growth process of tantalum capacitor oxide film for 0603 size
Authors: Xu, Yunfei1 ; Li, Chunguang1, 2 ; An, Tao1 ; Wu, Hua2/徐云飞;李春光;安涛;吴华
Author affiliation: 1 Xi'an University of Technology, Xi'an 710048, China
2 Ningxia Xingri Electronics Co. Ltd., Yinchuan 750011, China
Corresponding author: Xu, Y. ([e-mail])
Source title: Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Abbreviated source title: Xiyou Jinshu Cailiao Yu Gongcheng
Volume: 42
Issue: 1
Issue date: January 2013