RESUMO
To date, there has been much disagreement concerning the taxonomic status of Eleutheronema. In this study, the complete mitogenome sequence of Eleutheronema tetradactylum was determined and a Maximum Likelihood (ML) tree was constructed based on concatenated nucleotide sequences of 12 mitochondrial protein-coding genes. The complete mitogenome sequence is 16 490 bp in length, containing 13 protein-coding genes, two rRNA genes, 22 tRNA genes, a putative control region (CR), and a light-strand replication origin (OL). The overall base composition is 27.1% A, 26.0% T, 29.9% C, and 17.0% G, with a slight AT bias (53.1%), similar to most teleostean fishes. All protein-coding genes share the start codon ATG, except for COI, which begins with GTG. Most of them have TAA or TAG as the stop codon, while COII uses AGA, ND4 uses AGG and Cytb uses an incomplete stop codon T--. These results are expected to provide useful molecular data for phylogenetic studies of Polynemidae and Perciformes.
Assuntos
Genoma Mitocondrial , Perciformes/genética , Animais , Composição de Bases , Códon de Iniciação , Códon de Terminação , Proteínas de Peixes/química , Proteínas de Peixes/genética , Funções Verossimilhança , Fases de Leitura Aberta/genética , Perciformes/classificação , Filogenia , RNA Ribossômico/química , RNA Ribossômico/genética , RNA de Transferência/química , RNA de Transferência/genética , Origem de Replicação/genéticaRESUMO
In this study, two complete mitogenome sequences of Zebrias crossolepis and Acrossocheilus monticola were determined and the phylogenetic relationship were constructed based on concatenated nucleotide sequences of 12 mitochondrial protein-coding genes. The length of the complete mitogenome sequence are 16 775 bp and 16 605 bp in Z. crossolepis and A. monticola, respectively, both containing 13 protein-coding genes, two rRNA genes, 22 tRNA genes, a putative control region (CR), and a light-strand replication origin (OL). The overall base composition is 28.3% A, 26.3% T, 30.0% C, 15.5% G, with a slight AT bias (54.6%) in Z. crossolepis, while 31.4% A, 24.5% T, 28.2% C, 15.9% G, with an slight AT bias (55.9%) in A. monticola. All the protein-coding genes use the initiation codon ATG except COI uses GTG. Most of them have TAA or TAG as the stop codon, while ND4 and Cytb in Z. crossolepis and COII, ND4, and Cytb in A. monticola use an incomplete stop codon T. These results are expected to provide useful molecular data for species identification and further phylogenetic studies.
Assuntos
Cipriniformes/genética , DNA Mitocondrial/genética , Linguados/genética , Genoma Mitocondrial/genética , Animais , Composição de Bases/genética , Sequência de Bases/genética , Sequência Conservada/genética , Cyprinidae/genética , Ordem dos Genes/genética , Genes Mitocondriais/genética , Mitocôndrias/genética , Filogenia , Análise de Sequência de DNA/métodos , Sequenciamento Completo do GenomaRESUMO
OBJECTIVE: To observe the effect of pubic fractures reducted and fixed thorough the punctiform incision approach. METHODS: From 2002 to 2005, 10 cases with 18 fractures of pubis rami (8 male and 2 female) were treated with inserting construction plate by the punctiform incision approach. The average age of these patients was 37.2 years (range, 24 to 56 years). The mean duration between injury and operation was 8.7 days (range, 4 to 14 days). RESULTS: Internal fixation for eighteen pubis fractures were accomplished by 28 punctiform incisions. The blood loss for each incision was averagely 30 ml, operation time of each pubic was about 45 minutes. Function restoration was evaluated by Majeed' score and all patients gained excellent result. CONCLUSION: The fracture of pubic rami can be fixed sucessfully by punctiform incision approach. It provides smaller incision, less postoperative complications and excellent function rehabilitation.
Assuntos
Fixação Interna de Fraturas/métodos , Fraturas Ósseas/cirurgia , Osso Púbico/cirurgia , Adulto , Placas Ósseas , Feminino , Consolidação da Fratura , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
A novel red-emitting phosphor SrO . Y2O3 : Eu was synthesized by glycine combustion process. The phases and structure, the size and morphology, and the luminescent properties of the samples were investigated respectively by XRD, SEM and fluorescence spectrophotometer (FL). The results show that the samples include two phases, SrY2O4 and Y2O3, which belong to orthorhombic system and cubic system respectively. The particles of SrO . Y2O3 : Eu obtained at 1 200 degrees C are nearly spherical in shape, and the mean grain size is in the range of 100-200 nm. The excitation spectrum of SrO . Y2O3 : Eu phosphor shows a broad band with a main peak around 280 nm, which is due to the charge-transfer (CT) in the excitation of an electrons from the oxygen 2p state to an Eu3+ 4f state. Excited with a radiation of 280 nm, the phosphor emits strong red fluorescence, and the main emission peak is around 592 nm, which can be assigned to the transition of 5D0 -->7 F1 of Eu3+ ion. Another strong emission peak is at 614 nm, which can be assigned to the transition of 5D0 --> 7 F2 Of Eu3+ ion. Moreover, it was found that the ratio of glycine to nitrate ion, calcinations temperature and the concentration of Eu3+ have significant effect on the luminescent intensity of SrO . Y2O3 : Eu.
RESUMO
In the crystal structure of the title compound, C(16)H(12)O(2), no classical hydrogen bonds or aromatic π-π stacking inter-actions were observed. The mol-ecules are linked into a three-dimensional framework by a combination of C-Hâ¯O and C-Hâ¯π(arene) hydrogen bonds.
