According to the previously published CSFV sequences, 18 pairs of primers have been designed and synthesized, which cover the entire genome of CSFV strain Shimen. Each cDNA fragment has been amplified by RT-PCR from t...According to the previously published CSFV sequences, 18 pairs of primers have been designed and synthesized, which cover the entire genome of CSFV strain Shimen. Each cDNA fragment has been amplified by RT-PCR from the anticoagulant blood of strain Shimen infected pig. The PCR products have been cloned respectively and sequenced. Results show that the cDNA library of strain Shimen and its nucleotide sequence have been obtained. The genomic RNA of strain Shimen is 12 298 nucleotides in length, containing a 5’ and a 3’ noncoding region 373 and 231 nt long respectively. The center of genome is a single large open reading frame of 11 697 nt which encodes a polyprotein of 3 898 amino acids. The entire sequence of strain Shimen has also been compared with that of other CSFV strains.展开更多
According to the previously published CSFV sequences, 18 paris of partially overlapping primers which span the entire genome of CSFV strain Shimen were designed and synthesized. Each cDNA fragment of strain Shimen was...According to the previously published CSFV sequences, 18 paris of partially overlapping primers which span the entire genome of CSFV strain Shimen were designed and synthesized. Each cDNA fragment of strain Shimen was amplified by RT-PCR method from the anticoagulant blood of strain Shimen infected pig. The PCR fragments were cloned into pGEM-T vector respectively and sequenced. The results show that we have obtained the nucleotide sequence of strain Shimen. The viral RNA consists of 12 297 nucleotides including noncoding regions of 373 and 227 bases at the 5′ and 3′ end, respectively, and a single large open reading frame spanning 11 697 nucleotides in the middle, which encodes an amino acid sequence of 3 989 residues with a calculated molecular weight of 437.6×103. The precisely sequencing of 5′ and 3′ termini is undertaking.展开更多
A new eubrachythoracid arthrodire, Phymosteus liui gen. et sp. nov., is described from the Upper Devonian (Early Famennian) Xiejingshi Formation of Shimen County, Hunan, central China. The specimen under study, a near...A new eubrachythoracid arthrodire, Phymosteus liui gen. et sp. nov., is described from the Upper Devonian (Early Famennian) Xiejingshi Formation of Shimen County, Hunan, central China. The specimen under study, a nearly complete nuchal plate, was collected from the upper part of the formation in association with plant fossils, such as Leptophloeum guanzhuangense and Cyclostigma hunanense, by Dr. Gen Baoyin of Institute of Botany, Chinese Academy of Sciences in 1990s. The new form is at the pachyosteomorph level of organization having a large nuchal gap and possibly referred to the Selenosteidae of aspinothoracid arthrodires. It is the first record of the aspinothroacid arthrodires from China, but whether it widens the distribution of the Selenosteidae from Europe and North America to Asia needs further fossil materials.展开更多
Implementing the strategy of rural revitalization and embarking on the path of socialist rural revitalization with distinctive Chinese characteristics are essential steps in addressing existing gaps in agricultural an...Implementing the strategy of rural revitalization and embarking on the path of socialist rural revitalization with distinctive Chinese characteristics are essential steps in addressing existing gaps in agricultural and rural modernization.These steps aim to swiftly increase farmers’incomes,enhance agricultural production capabilities,foster high-quality rural economic development,and rectify issues related to uneven development.Revitalizing rural areas and alleviating poverty among the majority of farmers represent major decisions made by the state regarding the“three rural issues.”This paper conducts an analysis and discussion centered on Shimen Township in She County within the context of the agricultural and rural development revitalization strategy.The objective is to identify prevailing challenges and propose relevant solutions.展开更多
文摘According to the previously published CSFV sequences, 18 pairs of primers have been designed and synthesized, which cover the entire genome of CSFV strain Shimen. Each cDNA fragment has been amplified by RT-PCR from the anticoagulant blood of strain Shimen infected pig. The PCR products have been cloned respectively and sequenced. Results show that the cDNA library of strain Shimen and its nucleotide sequence have been obtained. The genomic RNA of strain Shimen is 12 298 nucleotides in length, containing a 5’ and a 3’ noncoding region 373 and 231 nt long respectively. The center of genome is a single large open reading frame of 11 697 nt which encodes a polyprotein of 3 898 amino acids. The entire sequence of strain Shimen has also been compared with that of other CSFV strains.
文摘According to the previously published CSFV sequences, 18 paris of partially overlapping primers which span the entire genome of CSFV strain Shimen were designed and synthesized. Each cDNA fragment of strain Shimen was amplified by RT-PCR method from the anticoagulant blood of strain Shimen infected pig. The PCR fragments were cloned into pGEM-T vector respectively and sequenced. The results show that we have obtained the nucleotide sequence of strain Shimen. The viral RNA consists of 12 297 nucleotides including noncoding regions of 373 and 227 bases at the 5′ and 3′ end, respectively, and a single large open reading frame spanning 11 697 nucleotides in the middle, which encodes an amino acid sequence of 3 989 residues with a calculated molecular weight of 437.6×103. The precisely sequencing of 5′ and 3′ termini is undertaking.
文摘A new eubrachythoracid arthrodire, Phymosteus liui gen. et sp. nov., is described from the Upper Devonian (Early Famennian) Xiejingshi Formation of Shimen County, Hunan, central China. The specimen under study, a nearly complete nuchal plate, was collected from the upper part of the formation in association with plant fossils, such as Leptophloeum guanzhuangense and Cyclostigma hunanense, by Dr. Gen Baoyin of Institute of Botany, Chinese Academy of Sciences in 1990s. The new form is at the pachyosteomorph level of organization having a large nuchal gap and possibly referred to the Selenosteidae of aspinothoracid arthrodires. It is the first record of the aspinothroacid arthrodires from China, but whether it widens the distribution of the Selenosteidae from Europe and North America to Asia needs further fossil materials.
文摘Implementing the strategy of rural revitalization and embarking on the path of socialist rural revitalization with distinctive Chinese characteristics are essential steps in addressing existing gaps in agricultural and rural modernization.These steps aim to swiftly increase farmers’incomes,enhance agricultural production capabilities,foster high-quality rural economic development,and rectify issues related to uneven development.Revitalizing rural areas and alleviating poverty among the majority of farmers represent major decisions made by the state regarding the“three rural issues.”This paper conducts an analysis and discussion centered on Shimen Township in She County within the context of the agricultural and rural development revitalization strategy.The objective is to identify prevailing challenges and propose relevant solutions.
