Impact of incisions of cataract surgery on patients with corneal astigmatism

AIM: To research the impact of different 3.2mm incisions of cataract surgery on patients whose corneal astigmatism was within 25 degrees by Orbscan. METHODS: We collected 40 cases of cataract patients whose corneal astigmatism was within 25 degrees detected by Orbscan and randomly divided them into groups A, B. Detected by Orbscan, 20 patients(20 eyes)in group A was conducted with 3.2mm corneal astigmatism axial incision and 20 patients(20 eyes)in group B was conducted with 3.2mm corneal incision on 90 degrees of the axis. All cataract operations were implemented by the same physician. We observed the postoperative changes of corneal astigmatism between two groups. RESULTS: The comparisons of Polar K on each time preoperative and postoperative point were significant differences within each group. But the comparisons of Polar K on each time preoperative and postoperative point were not statistically significant between two groups. After 3 months, two kinds of incisions would both increase about 0.3D Polar K in the cornea. CONCLUSION: 3.2mm corneal incision may cause Polar K 0.3D in corneal astigmatism

Social Capital, Socioeconomic Status and Self-efficacy

This study internalized social capital on the basis of traditional study of the influence of economic factors on self-efficacy, and studied the relationship among the family socio-economic status, social capital and self-efficacy. Based on the theoretical analysis, with first-hand data collection and using multiple regression models, the paper studied the intermediate effect of social capital in the relationship between the socioeconomic status and self-efficacy. We draw on the following conclusions: (1) The family socio-economic status as well as all its dimensions (father’s degree of education, mother’s degree of education, the total annual income of the family, father’s occupation, mother’s occupation) is significantly positively related to social capital and all the dimensions of its proxy variable (peer support, kinship support and general support of others); (2) There is a significant positive correlation between the family socio-economic status as well as all its dimensions and self-efficacy; the socio-economic status, with its dimensions, is the predictive variable of self-efficacy; (3) Social capital, with dimensions of its proxy variable, is positively correlated with self-efficacy and has predictive effect on self-efficacy (4) Social capital plays a significant intermediate role between socio-economic status and self-efficacy, and the mediating effect size is about 51.75%

1-{(1Z)-1-[3-(2,4-Dichloro­phen­oxy)prop­oxy]-1-(2,4-difluoro­phen­yl)prop-1-en-2-yl}-1H-1,2,4-triazole

In the title compound, C20H17Cl2F2N3O2, the triazole ring makes dihedral angles of 28.0 (3) and 72.5 (2)° with the 2,4-dichloro­pheny and 2,4-difluoro­phenyl rings, respectively, and the mol­ecule adopts a Z-conformation about the C=C double bond. In the crystal, C—H⋯O and C—H⋯N hydrogen bonds link the mol­ecules

Applications of Silver Nanowires on Transparent Conducting Film and Electrode of Electrochemical Capacitor

Silver nanowire has potential applications on transparent conducting film and electrode of electrochemical capacitor due to its excellent conductivity. Transparent conducting film (G-film) was prepared by coating silver nanowires on glass substrate using Meyer rod method, which exhibited better performance than carbon nanotube and graphene. The conductivity of G-film can be improved by increasing sintering temperature. Electrode of electrochemical capacitor (I-film) was fabricated through the same method with G-film on indium tin oxide (ITO). CV curves of I-film under different scanning rates had obvious redox peaks, which indicated that I-film exhibited excellent electrochemical pseudocapacitance performance and good reversibility during charge/discharge process. In addition, the specific capacitance of I-film was measured by galvanostatic charge/discharge experiments, indicating that I-film exhibits high special capacitance and excellent electrochemical stability

Enhanced mechanical, thermal and flame retardant properties by combining graphene nanosheets and metal hydroxide nanorods for Acrylonitrile–Butadiene–Styrene copolymer composite

Three metal hydroxide nanorods (MHR) with uniform diameters were synthesized, and then combined with graphene nanosheets (GNS) to prepare acrylonitrile–butadiene–styrene (ABS) copolymer composites. An excellent dispersion of exfoliated two-dimensional (2-D) GNS and 1-D MHR in the ABS matrix was achieved. The effects of combined GNS and MHR on the mechanical, thermal and flame retardant properties of the ABS composites were investigated. With the addition of 2 wt% GNS and 4 wt% Co(OH)2, the tensile strength, bending strength and storage modulus of the ABS composites were increased by 45.1%, 40.5% and 42.3% respectively. The ABS/GNS/Co(OH)2 ternary composite shows the lowest maximum weight loss rate and highest residue yield. Noticeable reduction in the flammability was achieved with the addition of GNS and Co(OH)2, due to the formation of more continuous and compact charred layers that retarded the mass and heat transfer between the flame and the polymer matrix

Effect of bone marrow mesenchymal stem cells on the Smad expression of hepatic fibrosis rats

AbstractObjectiveTo investigate the impact of bone marrow mesenchymal stem cells on Smad expression of hepatic fibrosis rats.MethodsA total of 48 adult female SD rats were randomly divided into three groups, normal control group (n=10), observation group (n=19) with liver fibrosis model rats injected with BMSCs cells; model group (n=19), with liver fibrosis model rats injected with physiological saline. Serum index, TGF-β1 and Smad expression were detected.ResultsType III procollagen, IV collagen, hyaluronic acid, laminin levels of observation group were significantly lower than those of model group (P<0.05). The content and expression of TGF-β1 in serum and liver tissue of observation group were significantly lower than those of model group(P<0.05). Compared with normal control group, the Smad3, Smad4 mRNA and protein expression of model group were significantly increased, the Smad7 mRNA and protein expression were significantly reduced (P<0.05). Compared with model group, Smad3, Smad4 mRNA and protein expression of observation group were significantly reduced, and Smad7 mRNA expression were significantly increased (P<0.05).ConclusionsBMSCs can regulate Smad expression to some extent, and reduce the degree of liver fibrosis