The prevalence of sexually transmitted disease (STD) in adolescent girls aged 15-19 attending a department of genitourinary medicine was compared for the years 1972 and 1982. Data were obtained from the confidential register using the coding of the clinic returns to the Department of Health (form SBH 60). There were 1373 patients in 1972 and 1799 in 1982, 6.4% and 7% respectively of the total f...

Following the publication of this article, an interested reader drew to our attention that Figs. 3B and 4B contained histological data which had previously been published in Figs. 3B and 4B, respectively, of the following article: Wiggins JF, Ruffino L, Kelnar K, Omotola M, Patrawala L, Brown D and Bader AG: Development of a lung cancer therapeutic based on the tumor suppressor microRNA-34. Can...

Several (Al,Si,N) compounds have been obtained by LPCVD in a vertical hot-wall reactor using aluminium trichloride, silicon tetrachloride and ammonia as source gases, with nitrogen as the carrier gas. In order to determine both their structure and local chemical composition, several deposits have been examined by analytical transmission electron microscopy combining electron diffraction (ED), h...

In this study, minor-addition elements such as Si, Co, Cr, W, Mo, and Ti were added to matrix to improve the wettability between the diamonds and Cu matrix. The pressureless liquid-phase sintering technique adopted in this study provides a low-cost method for producing diamond/Cu composites with high potential for industrial mass production. Thermal properties of the diamond/Cu-Ti composites fa...

DNA, isolated from two samples of human liver obtained from a suspected dimethylnitrosamine poisoning, contained 1363 to 1373 micromol of 7-methylguanine per mol of guanine and 273 to 317 micromol of O6-methylguanine per mol of guanine. Liver and kidney DNA obtained from unrelated cases contained no detectable methylated purines. From the DNA methylation levels, it is estimated that the dimethy...

A quantitative structure-activity relationship (QSAR) study of the 2,2-diphenyl-l-picrylhydrazyl (DPPH•) radical scavenging ability of 1373 chemical compounds, using DRAGON molecular descriptors (MD) and the neural network technique, a technique based on the multilayer multilayer perceptron (MLP), was developed. The built model demonstrated a satisfactory performance for the training ( R 2 = 0....

Because of its high electrical conductivity and good diffusion barrier properties ruthenium dioxide (RuO2) is a good electrode material for use with ferroelectric lead zirconate–titanate (PZT) solid solutions. Under certain conditions, RuO2 can react with PZT to form lead ruthenate (Pb2Ru2O6⋅5) during processing at elevated temperatures resulting in lead depletion from PZT. The standard Gibbs e...

El objetivo de este estudio es investigar las diferencias en los niveles motivaciones positivas para la parentalidad (MPP) entre brasileros y peruanos determinar si nacionalidad modera significativamente el efecto seis variables sociodemográficas dos individuales estas. La muestra estuvo compuesta por 1373 1464 brasileros. Las edades participantes oscilaron 18 68 años (M = 29.68; DE 6.29). Se r...

Silicon single crystals were deformed in tensile tests along the [134] direction between 1173 K and 1373 K. The yield point phenomenon was observed specimens below 1273 K, while a continuous above 1323 values of work-hardening rate stage II same as those reported other crystals. Orientation maps specimen obtained by using electron backscattered diffraction method indicated that starts before Sc...