[Effects of selenium valence states and application concentrations on plant growth, ascorbate-glutathione cycle in Citrus junos cv. Ziyang Xiangcheng].

Potted Citrus. junos cv. Ziyang Xiangcheng seedlings were used to study the effects of selenium (Se) valence states (Se and Se) on plant growth and antioxidants and antixodases in ascorbate(AsA)-glutathione (GSH) cycle.

Characteristics of bacterial vaginosis infection in cervical lesions with high risk human papillomavirus infection.

Unlabelled: High risk human papillomavirus (HPV) infection is the major cause of cervical cancer. Bacterial vaginosis (BV) is considered as the most prevalent vaginal imbalance affecting women of reproductive age. However, the relationship between HPV and BV infection is unclear.

Dysregulation of miRNA-21 and their potential as biomarkers for the diagnosis of cervical cancer.

Objective: This study aimed to characterize the miR-21 and evaluated its clinical significance.

Methods: Total RNA was extracted from 30 pairs of fresh specimens of cervical cancer and normal tissues. The expression levels of the miR-21-3p and miR-21-5p were detected by quantitative reverse transcriptase polymerase chain reaction, with U6 as the internal reference gene.

A low-surface energy carbon allotrope: the case for bcc-C6.

Graphite may be viewed as a low-surface-energy carbon allotrope with little layer-layer interaction. Other low-surface-energy allotropes but with much stronger layer-layer interaction may also exist. Here, we report a first-principles prediction for one of the known carbon allotropes, bcc-C6 (a body centered carbon allotrope with six atoms per primitive unit), that should have exceptionally low-surface energy and little size dependence down to only a couple layer thickness.

Two dimensional Dirac carbon allotropes from graphene.

Using a structural search method in combination with first-principles calculations, we found lots of low energy 2D carbon allotropes and examined all possible Dirac points around their Fermi levels. Three amazing 2D Dirac carbon allotropes have been discovered, named as S-graphene, D-graphene and E-graphene. By analyzing the topology correlations among S-, T, net W graphene and graphene, we found that a general rule is valuable for constructing 2D carbon allotropes that are keen to possess Dirac cones in their electronic structures.

[The correlation analysis between environmental factors, bone morphogenetic protein-4 and transforming growth factor beta-3 polymorphisms in nonsyndromic cleft lip with or without cleft palate].

Objective: To investigate the effects of interactions among environmental factors, bone morphogenetic protein-4 (BMP4) and transforming growth factor beta-3 (TGF-β(3)) polymorphisms on nonsyndromic cleft lip and cleft palate (NSCLP).

Methods: The data of environmental exposures were collected with questionnaires. Genotypes were determined with techniques of polymerase chain reaction-restriction fragment length polymorphism.

[Effect of simvastatin on bone morphogenetic protein-2 expression in the periodontal tissue after rat tooth movement].

Objective: To investigate the effect of systematic administration of simvastatin on the bone morphogenetic protein-2 (BMP-2) expression in the periodontal tissue after rat tooth movement and on the relapse of tooth movement.

Methods: Orthodontic tooth movement of upper first molar was performed in 32 rats with coil spring for 21 days. The 32 rats were randomly allocated into 4 groups: negative control group (isotonic saline) and three experimental groups (2.

[The relationship between cbfalpha1 and the mechanism of the bone remodeling in the process of orthodontic tooth movement].

Purpose: To perform qualitative and quantitative analyses of core binding factor alpha1 (cbfalpha1) in periodontal tissue during the experimental rat tooth movement process and to investigate the active mechanism of cbfalpha1 in the osteoblast differentiation.

Methods: 42 male Wistar rats aged 8 weeks were divided into 7 groups (0,1,3,5,7,10 and 14 days groups) in random, 6 rats in each group. 42 rats were perfused and sacrificed at the 1st, 3rd, 5th, 7th, 10th and 14th day.

[Biomechanical study of open bite treatment with tip forward bend].

Objective: To verify whether it is effective to treat open bite cases with tip-forward bend.

Methods: Three-dimensional finite element (TDFE) models of the lower left central incisor and first molar were set up by means of CT. Stress distribution in root, PDL and alveolar bone, and the tendency of the tooth movement were obtained by calculation under different orthodontic forces.