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Liupanshui, China

Liu Y.-X.,Guizhou Academy of Agricultural science | Liu Y.-X.,Guizhou Institute of Biotechnology | Hyde K.D.,Mae Fah Luang University | Ariyawansa H.A.,Mae Fah Luang University | And 5 more authors.
Phytotaxa | Year: 2013

Shiraia bambusicola is an economically important medicinal fungus on bamboo. In this paper we re-describe the holotype and designate an epitype based on fresh specimens collected from Zhejiang Province in China. Morphological characters agree with those of the holotype and phylogenies based on combined partial LSU-rDNA, EF and RPB gene sequence data from the epitype, suggest that it is a new family of Pleosporales. The new family is introduced and the holotype and epitype are both illustrated. © 2013 Magnolia Press. Source

Su C.,Liupanshui Normal College | Qiu X.,Zhejiang Academy of Agricultural Sciences | Ji Z.,Zhejiang Academy of Agricultural Sciences
Molecular Breeding | Year: 2013

Along with the development and integration of molecular genetics and quantitative genetics, many quantitative trait locus (QTL) mapping studies have been conducted using different mapping populations in various crop species. Existing QTLs can be used for marker-assisted breeding and map-based cloning, whereas the false-positive QTLs are no use. The purpose of this study is to evaluate the suitability of different mapping procedures for data from different genetic models. In this study, four types of recombinant inbred lines (RILs) with different genetic models, viz. additive QTLs (Model I), additive and epistatic QTLs (Model II), additive QTLs and QTL × environment interaction (Model III), additive, epistatic QTLs and QTL × environment interaction (Model IV), were simulated by computer. Six types of QTL mapping procedures, viz. CIM, MIMF, MIMR, ICIM, MQM and NWIM, on four kinds of QTL mapping software, viz. WinQTL Cartographer Version 2. 5, IciMapping Version 2. 0, MapQTL Version 5. 0 and QTLnetwork Version 2. 0, were used for screening QTLs of the simulated RILs. The results showed that different mapping procedures have different suitability for different genetic models. CIM and MQM can only screen Model I data. MIMR, MIMF and ICIM can only screen Model I and Model II data. NWIM can screen all four models' data. It can be concluded that different genetic models' data have different most suitable mapping procedures. In practical experiments where the genetic model of the data is unknown, a multiple model mapping strategy should be used, that is a full model scanning with complex model procedure followed by verification with other procedures corresponding to the scanning results. © 2013 Springer Science+Business Media Dordrecht. Source

Peng Z.Y.,Yunnan Normal University | Yin Y.,Liupanshui Normal College | Bi X.W.,Honghe University | Zhao X.H.,CAS National Astronomical Observatories | And 3 more authors.
Astrophysical Journal | Year: 2010

In this paper, we have analyzed the temporal and spectral behavior of 52 fast rise and exponential decay (FRED) pulses in 48 long-duration gamma-ray bursts (GRBs) observed by the CGRO/BATSE, using a pulse model with two shape parameters and the Band model with three shape parameters, respectively. It is found that these FRED pulses are distinguished both temporally and spectrally from those in the long-lag pulses. In contrast to the long-lag pulses, only one parameter pair indicates an evident correlation among the five parameters, which suggests that at least four parameters are needed to model burst temporal and spectral behavior. In addition, our studies reveal that these FRED pulses have the following correlated properties: (1) long-duration pulses have harder spectra and are less luminous than short-duration pulses and (2) the more asymmetric the pulses are, the steeper are the evolutionary curves of the peak energy (Ep) in the ?f? spectrum within the pulse decay phase. Our statistical results give some constraints on the current GRB models. © 2010. The American Astronomical Society. All rights reserved. Source

Peng Z.Y.,Yunnan Normal University | Peng Z.Y.,Chinese Academy of Sciences | Zhao X.H.,Chinese Academy of Sciences | Zhao X.H.,CAS National Astronomical Observatories | And 3 more authors.
Astrophysical Journal | Year: 2012

Previous studies have found that the width of the gamma-ray burst (GRB) pulse is energy dependent and that it decreases as a power-law function with increasing photon energy. In this work we have investigated the relation between the energy dependence of the pulse and the so-called Band spectrum by using a sample including 51well-separated fast rise and exponential decay long-duration GRB pulses observed by BATSE (Burst and Transient Source Experiment on the Compton Gamma Ray Observatory). We first decompose these pulses into rise and decay phases and find that the rise widths and the decay widths also behave as a power-law function with photon energy. Then we investigate statistically the relations between the three power-law indices of the rise, decay, and total width of the pulse (denoted as δr, δd, and δw, respectively) and the three Band spectral parameters, high-energy index (α), low-energy index (β), and peak energy (E p ). It is found that (1) α is strongly correlated with δw and δd but seems uncorrelated with δr; (2) β is weakly correlated with the three power-law indices, and (3) Ep does not show evident correlations with the three power-law indices. We further investigate the origin of δd- α and δw-α. We show that the curvature effect and the intrinsic Band spectrum could naturally lead to the energy dependence of the GRB pulse width and also the δd-α and δw-α correlations. Our results hold so long as the shell emitting gamma rays has a curved surface and the intrinsic spectrum is a Band spectrum or broken power law. The strong δd-α correlation and inapparent correlations between δr and the three Band spectral parameters also suggest that the rise and decay phases of the GRB pulses have different origins. © 2012. The American Astronomical Society. All rights reserved.. Source

Zhou Q.P.,Liupanshui Normal College
Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences | Year: 2010

Ginkgo biloba extract (GBE) is one of the hot spots of drugs extracted from plants recently; it protects brain from ischemia/reperfusion injuries. The mechanism of protective effects includes antioxidation, free radicals clearance, inhibiting the release of excitatory amino acid, anti-inflammation, inhibiting neural apoptosis and other biological effects. Source

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