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81.
Our objective was to begin to investigate sources, sinks, and flux rates of nitrogen (N) and phosphorus (P) in Famosa Slough, a small (12 ha) highly modified urban estuary in San Diego, California, U.S.A. The hydrology of Famosa Slough has been modified by culverts that dampen tidal influence and seasonal runoff from two urban watersheds, each of which has been implicated as a nutrient source that generates nuisance algal blooms. In 1995 and 1996, the ranges of nutrients measured in the water column were extremely wide; upper values exceeded those in other estuaries identified as eutrophic. Average dissolved inorganic nitrogen ranged from 2 to 250 M, while dissolved inorganic phosphorus ranged from <1 to 15 M. Nutrient content of the water changed rapidly both spatially and temporally depending on the tides and rainfall. While tidal water dominated this system, especially in the dry season, our results indicate that Famosa Slough's small watershed, not the larger watershed of the San Diego River, was the major source of nutrients during rainfall. Sediment nutrients were also high (3 mg N g dry wt1 and 0.600 mg P g dry wt1). Short-term flux studies suggest that the large accumulations of opportunistic green macroalgae commonly found in this estuary, and possibly the sediments, may act as a large and rapid sink for nutrients during times of high nutrient supply. We suggest that small, shallow estuaries in urban settings may have more complex and rapid nutrient dynamics than those found in larger systems.  相似文献   
82.
Under federal outcome standards established by the Adoption and Safe Families Act of 1997, discharges to adoption are expected to occur within 24 months of the most recent removal from home for at least 32% of cases. In the research recounted here, adoption is treated as a process composed of two discrete steps: adoptive placement and adoption finalization. It was hypothesized that the predictors of completion may differ for each step, offering direction for practice and policy. Predictors included child characteristics, maltreatment history, placement history, system variables, and service delivery variables. Children's adoption event history was viewed through five annual entry cohorts, including all children with adoption case plans, rather than the exit cohorts of the federal measure, which includes only adopted children. Over this five-year period, the length of time from removal to adoption finalization decreased significantly, primarily as a result of decreased time from adoption placement to finalization. Child and family characteristics and abuse/neglect history were found to be much more predictive in the analysis of timely adoption placement than of time from placement to finalization. These and other significant predictors suggest strategies for improving timely adoption outcomes.  相似文献   
83.
Pacific peoples are a rapidly growing but socially disadvantaged segment of New Zealand society. Within this context, individuals may be particularly vulnerable to the experience of intimate partner violence (IPV). The aim of the study was to establish the association between the experience of maternal and/or paternal emotional or physical abuse and current severe physical partner violence perpetration or victimization among a cohort of Pacific women. Paternal physical abuse was the only statistically significant risk factor from childhood parenting history that was independently associated with severe physical perpetration and victimization within the mother's current intimate partner relationship (RR 2.6). These findings highlight the deleterious effect of paternal physical violence on subsequent IPV and contribute to the development of empirically based and considered ways to approach these complex phenomena.  相似文献   
84.
Detecting and managing Mycobacterium tuberculosis (TB) infection in a health-science center population is a clinical dilemma. Tuberculin skin tests are still the preferred method for detecting present or past infection of TB. The authors discuss the performance of whole blood interferon gamma release assay test commercially known as QuantiFERON-TB Gold Test (QFT-G) as an additional tool for a TB surveillance program for the students and employees at an academic medical center. QFT-G was successfully implemented as a confirmatory test for screening of TB infection.  相似文献   
85.
OBJECTIVE: The authors used a stratified cluster sampling design to inform campus sexually transmitted diseases prevention programs. PARTICIPANTS AND METHODS: They conducted a cross-sectional study of students (N = 1,130) at a large, urban, minority-serving university in South Florida using the 2004 National College Health Assessment Survey instrument. RESULTS: Of the 1,130 participants, 14.0% reported risky sexual behavior (having more than 1 sexual partner in 1 year and not using a condom the last time they had vaginal intercourse), and 11.9% reported consistent risky sexual behavior (having more than 1 partner in 1 year and not using condoms most or all of the time during the past 30 days). In multivariable analysis, past-month alcohol use had the strongest independent association with both risky and consistent risky sexual behavior. Illicit drug use was marginally significant in both models. CONCLUSIONS: Administrators should address the use of alcohol and other drugs on campus in planning interventions to promote safe sexual behavior.  相似文献   
86.
This study examined the experiences of three South Asian Muslim immigrant families who have a young child with autism. It describes the early period of their child’s disability as the families encountered four critical issues in their lives: a complex disability, the culturally diverse conceptualizations of the disability, family‐professional dynamics in cross‐cultural encounters and the search for appropriate services. Analyses were based on interviews with parents, supplemented by 17 months of participant‐observation in homes and community. Parents narrated their experiences beginning with symptom recognition through help seeking, diagnosis and subsequent service provision. Results suggest that for these families the challenging process of diagnosing and ameliorating autism is complicated by their unique positioning within and between diverse meaning systems. Challenges include American health and education professionals’ misunderstandings of their family organization and linguistic practices, and difficulties in cross‐cultural communication with professionals. Implications for professionals are discussed.  相似文献   
87.
The study examined condom use among 204 Black and Hispanic female adolescents who attended family planning clinics. Partner attitude, partner communication, parental communication and social support measures were used in a multinomial logistic regression model to predict condom use at last intercourse. The results indicated that adolescents who perceived that their partners had a positive attitude toward condom use were 1.37 times more likely to report condom use compared to those whose partners did not have a positive attitude. Additionally, adolescents who reported communicating with partners about condoms were .37 times more likely to use condoms compared to those who did not communicate with their partners. These findings suggest that increasing condom use among female adolescents will require addressing primarily partner factors. Male partners must also be included in interventions to increase condom use.  相似文献   
88.
Historiquement, les questions de genre sont au c?ur des métiers de soins. Généralement, les soins sont associés aux tâches que, de tous temps, les femmes prenaient en charge ou se voyaient imposer. C'est précisément pour cette raison que Tronto (Moral boundaries. A political argument for an ethic of care, 1993) affirme que les travaux de soins ont été historiquement conçus de telle manière qu'ils se retrouvent exclus du domaine du ‘vrai’ travail. Ils ne font pas partie du travail professionnel, qu'il soit industriel ou administratif. Cependant, on constate petit à petit une évolution en la matière. Depuis environ une décennie, les soins ont acquis une signification beaucoup plus large. On définit les travaux de soins comme un type de métier dans lequel la cognition, la compétence et l'émotion sont étroitement liées. La reconnaissance du caractère émotionnel des métiers de soins porte en elle un élément de base très important, tant pour le développement futur de ces métiers que pour l'élaboration d'une politique de ressources humaines ‘sur mesure’ pour les métiers de soins. Dans la deuxième partie de l'article, nous confrontons le discours qui a été développé dans le prolongement de cette idée à la pratique. Nous nous basons sur les résultats d'une enquête et d'une étude de cas auprès de la catégorie professionnelle des infirmiers et des soignants au sein des maisons de retraite et de soins en Flandre. Cette confrontation permet des conclusions quant à la spécificité des métiers de soins (qui restent pour l'instant principalement féminins).  相似文献   
89.
90.
This study draws on social control and social learning theories to examine the role of dating‐specific attitudes and practices as predictors of adolescents' sexual initiation. We include attention to the adolescent's reaction to control attempts as a further means of assessing family dynamics (i.e., frequency of dating disagreements). The study uses longitudinal data from 697 adolescents who were not sexually active at the first interview as well as separate interviews with parents. In models that include all parenting variables, parental caring, parents' preferences that the child should delay sex, and the frequency of dating disagreements were significant predictors of initiation of teen sexual activity.  相似文献   
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