Control of the Surface Reactivity of the Si(100) Surface

AbstractWe have used molecular beam methods and temperature programmed desorption to probe the reaction of several hydrocarbons with the Si(100) surface at cryogenic temperatures. It has been found that the kinetics of the surface reaction with the C=C bond can be strongly influenced by the production of active surface sites using prebombardment with Ar ions. The chemistry of the adsorbate is also influenced by electron bombardment of the adsorbed layer. Conversely, capping of active sites with atomic hydrogen retards the kinetics of the surface reaction. This work forms a first step in using the methods of surface kinetics and spectroscopy to probe the details of the elementary steps at work in chemical vapor deposition and plasma vapor deposition, leading to the production of SiC films.</jats:p

Marital Status at First Intercourse in Married Christian Women: Relationships with Guilt, Sanctification of Sexuality, and Marital Satisfaction

Previous research has demonstrated that women experience higher levels of guilt compared with men at first sexual intercourse. Research also indicates that guilt is related to religiosity and to level of relational commitment. However, there has been no research on the correlates of sexual debut in a Christian population. This study compares the experiences of married Christian women who had first intercourse before or after marriage on guilt, sanctification of sex, and marital satisfaction. A total of 210 married Christian women were administered a survey containing measures of guilt at first intercourse, sanctification of sexuality, and marital satisfaction. The results indicate that the premarital group reported significantly higher levels of guilt at first intercourse and significantly lower levels of theistic sanctification and marital satisfaction than the marital group. In addition, there was no significant correlation between relational commitment and guilt for the premarital debut group, suggesting that those who were in a committed relationship at sexual debut experienced similar levels of guilt to those who were not in a committed relationship at debut. This study has meaningful implications for the way sexuality is discussed in Christian culture. </jats:p