OUTLOOK 0.23T磁共振梯度系统的故障检修2例

OUTLOOK0．23T是低场强常导开放式磁共振。它的梯度子系统（gradient subsystem或gradients）是MRI系统的重点部位。由于它长期工作在高电压大电流条件下，受电流、电压波动及环境温度、湿度变化的影响较大，所以它是整台设备的“高危地带”，极易发生故障。因此，研究如何分析排除这方面的故障，有很重要的现实意义。为此．本文对OUTLOOK0．23T磁共振梯度子系统典型故障的分析和检修做一简要的介绍，供同行参考。     

Multi-platform mediation: U.S. mothers’ and fathers’ mediation of teens’ media use

This study attempts to solidify a predictive model of parental mediation across four media platforms (television, video games, internet, and cellphones). The analysis compares U.S. mothers’ and fathers’ mediation, specifically within the larger context of parenting behaviors and media attitudes. Results indicate that there are only a few, small gender differences in parental mediation. Across media, parental mediation was largely predicted by the child’s age, parents’ attitudes about media effects, and levels of parent–child involvement and communication. More involved parents were more frequent mediators for television, video games, and the Internet. Parents who reported frequent talks with children more frequently mediated all four media. The results are discussed within the context of research on parenting.     

PROMOTING ATTENTIONAL HEALTH: IMPORTANCE TO WOMEN’S LIVES

Promoting attentional health is an important opportunity to support and empower women to actively participate in their own health care and function effectively in multiple roles. Attention, the ability to focus or concentrate, is a necessary cognitive resource used throughout the life span in participating in self-health care. However, women can inadvertently overuse this essential capacity, especially when responding to life’s multiple demands, resulting in mental or attentional fatigue. When women experience this mental fatigue, many daily activities, including self-health care, are more difficult. An attentional perspective in women’s health allows approaches to improve daily functioning and reduce the risk of attentional fatigue. In this article we present the conceptual dimensions of directed attention and its relevance to women’s health; practice and research implications are identified.     

妊娠剧吐致Wernick’S脑病2例

妊娠剧吐致Wemick’s脑病非常罕见,该病起病急,病情重,临床上多因诊断不及时,治疗不当而预后差。笔者所在医院在近两年中收治2例,报道如下。     

WOMEN’S SOMATIC STYLES: RETHINKING BREAST SELF-EXAMINATION EDUCATION

In this ethnographic study I explored women’s somatic and sexual experiences, reception of breast self-examination (BSE) messages, and reactions to the practice of BSE. Mainstream BSE education uses messages that deemphasize the woman, her breasts, and her relationship to them as sexual. The turbid confluence of societally eroticized breasts and self-touch taboos makes it unlikely that women filter these messages in an asexual way. Using grounded theory, I examined women’s expression of the self–body relationship and the sociocultural milieu within which women consider BSE education materials. Seven subjects varying in age, sexual orientation, parenting, and relationship status were interviewed about their physical experiences, self-touch, and body image. Subjects also participated in a BSE class and focus group, and composed a journal entry describing their reactions to practicing BSE. Discernible patterns in somatic memories, somatic styles, and reactions to BSE educational messages were found. This study suggests a need for a more consciously feminist approach to BSE education.     

Exploring U.S. Men’s Birth Intentions

While recently there have been renewed interest in women’s childbearing intentions, the authors sought to bring needed research attention to understanding men’s childbearing intentions. Nationally representative data from the 2006–2010 National Survey of Family Growth (NSFG) was used to examine pregnancy intentions and happiness for all births reported by men in the 5 years preceding the interview. We used bivariate statistical tests of associations between intention status, happiness about the pregnancy, and fathers’ demographic characteristics, including joint race/ethnicity and union status subgroups. Multivariate logistic regressions were used to calculate adjusted odds ratios of a birth being intended, estimated separately by father’s union status at birth. Using comparable data and measures from the male and female NSFG surveys, we tested for gender differences intentions and happiness, and examined the sensitivity of our results to potential underreporting of births by men. Nearly four out of ten of births to men were reported as unintended, with significant variation by men’s demographic traits. Non-marital childbearing was more likely to be intended among Hispanic and black men. Sixty-two percent of births received a 10 on the happiness scale. Happiness about the pregnancy varied significantly by intention status. Men were significantly happier than women about the pregnancies, with no significant difference in intention status. Potential underreporting of births by men had little impact on these patterns. This study brings needed focus to men’s childbearing intentions and improves our understanding of the context of their role as fathers. Men need to be included in strategies to prevent unintended pregnancy.