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236 results on '"Liu, G.H."'

51. Effects of A-site cation disorder on structure and magnetocaloric properties in Y and Sr codoped [La.sub.2/3][Ca.sub.1/3]Mn[O.sub.3] compounds

Author

Qing Ji, Lv, Bin, Wang, P.F., Cai, H.L., Wu, X.S., Liu, G.H., and Luo, G.S.

Subjects
Ferromagnetism -- Analysis, Lanthanum -- Magnetic properties, Lanthanum -- Thermal properties, Manganese alloys -- Magnetic properties, Manganese alloys -- Structure, Manganese alloys -- Thermal properties, Phase transformations (Statistical physics) -- Analysis, Strontium -- Magnetic properties, Strontium -- Thermal properties, Physics
Abstract

The structural and magnetocaloric properties of the perovskite manganite [La.sub.2/3-x][Y.sub.x][Ca.sub.1/3-y][Sr.sub.y]Mn[O.sub.3] are analyzed. The ferromagnetic ordering temperature [T.sub.c] has increased abruptly due to the increase in the competition between A-site size-disorder degree and double-exchange interaction resulting from Mn-O-Mn bond angle and the phase transition is broadened due to the cation disordering at A-site.

Published
2009

55. Morphological and molecular confirmation of the validity of Trichuris rhinopiptheroxella in the endangered golden snub-nosed monkey (Rhinopithecus roxellana).

Author

Wang, H.B., Zhang, H.J., Song, L.L., Zhu, L., Chen, M., Ren, G.J., Liu, G.H., and Zhao, G.H.

Subjects
WHIPWORMS, MONKEYS, MOLECULAR evolution, ENDANGERED species, GENETIC distance
Abstract

The golden snub-nosed monkey (Rhinopithecus roxellana) is an endangered species endemic to China. Relatively little is known about the taxonomic status of soil-transmitted helminths (STH) in these monkeys. Trichuris spp. (syn. Trichocephalus) are among the most important STHs, causing significant socio-economic losses and public health concerns. To date, five Trichuris species have been reported in golden monkeys, including a novel species, T. rhinopiptheroxella, based on morphology. In the present study, molecular and morphological analysis was conducted on adult Trichuris worms obtained from a dead golden snub-nosed monkey, to better understand their taxonomic status. Morphology indicated that the adult Trichuris worms were similar to T. rhinopiptheroxella. To further ascertain their phylogenetic position, the complete mitochondrial (mt) genome of these worms was sequenced and characterized. The mt genome of T. rhinopiptheroxella is 14,186 bp, encoding 37 genes. Phylogenetic analysis based on the concatenated amino acids of 12 protein-coding genes (with the exception of atp 8) indicated that T. rhinopiptheroxella was genetically distinct and exhibited 27.5–27.8% genetic distance between T. rhinopiptheroxella and other Trichuris spp. Our results support T. rhinopiptheroxella as a valid Trichuris species and suggest that mt DNA could serve as a marker for future studies on the classification, evolution and molecular epidemiology of Trichuris spp. from golden snub-nosed monkeys. [ABSTRACT FROM AUTHOR]

Published
2019
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63. Herders' willingness to accept versus the public sector's willingness to pay for grassland restoration in the Xilingol League of Inner Mongolia, China

Author

Zhen, L., Li, F., Yan, H.M., Liu, G.H., Liu, J.Y., Zhang, H.Y., Du, B.Z., Wu, R.Z., Sun, C.Z., Wang, C., Zhen, L., Li, F., Yan, H.M., Liu, G.H., Liu, J.Y., Zhang, H.Y., Du, B.Z., Wu, R.Z., Sun, C.Z., and Wang, C.

Abstract

This paper describes two payment for ecosystem services (PES) programs to restore grassland ecosystems in Inner Mongolia in Northern China. A key challenge is to sustain the livelihood of local residents, who earn most of their income from traditional animal husbandry. We surveyed 240 herders and 36 government representatives in 2 years. We used contingent valuation and logistic regression to analyze the resulting data. Since the PES implementation, income from cultivation and animal grazing decreased, whereas income from compensation and off-farm activities increased. The herders preferred an annual payment of 625 Chinese yuan (CNY ) ha-1 for participating in conservation activities, but the government prefers to provide 528 CNY ha-1, resulting in an annual gap of 97 CNY ha-1. The current too-low payments may lead some herders to expand their grazing into restricted grassland or increase their number of animals, particularly if either payment program ends. The herders were most concerned about their economic loss, whereas the government considered both grassland restoration and income protection to be important. To create an improved and sustainable PES scheme, we recommend solutions that will let the herders sustain their livelihood while conserving the grasslands. Our findings will help to establish more effective PES schemes for the grasslands of Inner Mongolia and similar regions.

Published
2014

70. The complete mitochondrial genome of Pseudanoplocephala crawfordi and a comparison with closely related cestode species.

Author

Zhao, G.H., Wang, H.B., Jia, Y.Q., Zhao, W., Hu, X.F., Yu, S.K., and Liu, G.H.

Subjects
HYMENOLEPIS, TAPEWORMS, MITOCHONDRIAL DNA, ZOONOSES, EPIDEMIOLOGY, NUCLEOTIDE sequencing
Abstract

Pseudanoplocephala crawfordi is an important zoonotic cestode of economic significance and public health concern. In spite of its significance as a pathogen, the systematics, genetics, epidemiology and biology of this parasite remain poorly understood. In the present study, we sequenced and characterized the complete mitochondrial (mt) genome of P. crawfordi, which is 14,192 bp long and encodes 36 genes, including 12 protein-coding genes, 22 transfer RNA genes and two ribosomal RNA genes. Phylogenetic analysis of the concatenated amino acid sequences using the Bayesian inference (BI) method showed that P. crawfordi was closely related to the family Hymenolepididae. Considering that the taxonomic status of P. crawfordi has been controversial when based only on morphological features, the mt genome obtained here will provide novel molecular markers to ascertain the phylogenetic position of this parasite accurately. [ABSTRACT FROM AUTHOR]

Published
2016
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87. InN layers grown by MOCVD on substrates

Author

Jia, C.H., primary, Chen, Y.H., additional, Zhou, X.L., additional, Liu, G.H., additional, Guo, Y., additional, Liu, X.L., additional, Yang, S.Y., additional, and Wang, Z.G., additional

Published
2010
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