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Characteristics of Magnetic Core in Magnetic Pulse Compression System

100%
Zhang D., Yan P., Sun Y., Wang J., Zhou Y., Pan R.
Acta Physica Polonica A
|
2009
|
vol. 115
|
issue 6
1001-1003
EN
In order to obtain the characteristics of magnetic core under ≈0.5-5 μs saturation time, a one-stage magnetic pulse compression circuit without external demagnetization circuits which are commonly used in magnetic compressors is designed. The current through the core is calculated by voltage across the resistive load, and the loop voltage is picked up with a single wire loop and integrated by software. B-H curves are derived from the measured voltage and current wave forms. B-H curves show that the core loss is in inverse proportion to the time to saturation, whereas the percentile core loss decreases as the charging energy increases. While the eddy current loss and dissipated energy are in direct proportion to dB/dt. The low inductance of magnetic switch indicates that the core is saturated and behaves as an air core. By applying custom characteristics to each stage in Pspice simulation, more practical energy transfer in magnetic pulse compression and the effects of leakage current are presented.
2

Inheritance of resistance to stripe rust in winter wheat cultivars Aquileja and Xian Nong

100%
Feng J., Zhang Z., Li G., Zhou Y., Wang H., Guo Q., Sun J.
Journal of Applied Genetics
|
2007
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vol. 48
|
issue 1
43-46
EN
Winter wheat cultivars Aquileja (AQ) and Xian Nong 4(XN) were previously reported to possess durable, quantitative resistance to stripe rust disease. In the present study, AQ, XN and a susceptible wheat cultivar were reciprocally crossed in all 6 combinations. Parents, F1, F2, F3, BCP1 and BCP2 were used to determine quantitative genetic parameters for infection type and disease severity. The results showed that fixable genetic components preponderated in the inheritance of the resistance in AQ and XN for both infection type and disease severity, while the dominant component could be detected in some cases. The resistance was conditioned by oligogenes. Heritability of the resistance ranged from 50 to 79% in most cases.
3

Inheritance of resistance to stripe rust in winter wheat cultivars Aquileja and Xian Nong 4

100%
Feng J., Zhang Z., Li G., Zhou Y., Wang H., Guo Q., Sun J.
Journal of Applied Genetics
|
2007
|
vol. 48
|
issue 3
43-46
EN
Winter wheat cultivars Aquileja (AQ) and Xian Nong 4(XN) were previously reported to possess durable, quantitative resistance to stripe rust disease. In the present study, AQ, XN and a susceptible wheat cultivar were reciprocally crossed in all 6 combinations. Parents, F1, F2, F3, BCP1 and BCP2 were used to determine quantitative genetic parameters for infection type and disease severity. The results showed that fixable genetic components preponderated in the inheritance of the resistance in AQ and XN for both infection type and disease severity, while the dominant component could be detected in some cases. The resistance was conditioned by oligogenes. Heritability of the resistance ranged from 50 to 79% in most cases.
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