865 resultados para CUNY Legislative Day
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The "Five-Day Plan to Stop Smoking" (FDP) is an educational group technique for smoking cessation. We studied a cohort of 123 smokers (55 men, 68 women, mean age 42 years) who participated in 11 successive FDP sessions held in Switzerland between 1995 and 1998 and who were followed up for at least 12 months by telephone or direct interview. Overall, 102 of the 123 subjects (83%) had stopped smoking by the end of the FDP, and self-declared smoking cessation rate was 25% after one year. The following factors potentially associated with outcome were studied: age, sex, smoking habit duration, cigarettes per day, Fagerström Test for Nicotine Dependence (FTND), group size, and medical presence among the group leaders. Smoking habit duration was the only variable which showed a statistically significant association with success: the rate of smoking cessation was higher among patients who had smoked for less than 20 years (34.7% vs. 18.9%, p = 0.049). Stress was the most common cause of relapse. The FDP appears to be an effective smoking cessation therapy. Propositions are made in order to improve the success rate of future sessions.
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Effects of insulin upon glucose metabolism were investigated in chick embryos explanted in vitro during the first 30 h of incubation. Insulin stimulated the glucose consumption of the chick gastrula (18 h) and neurula (24 h), but had no effect on the late blastula (0 h:laying) and on the stage of six to eight somites (30 h). The increase in glucose consumption concerned both the embryonic area pellucida (AP) and extraembryonic area opaca (AO). AP responded to a greater extent (50%) and at a lower range of concentrations (0.1-1.0 ng/ml) than AO (30%; 1-100 ng/ml). Insulin had no effect on the oxygen consumption of blastoderms, whereas it stimulated the aerobic lactate production (approximately 70% of the additional glucose consumption was converted to lactate). The nanomolar range of stimulating concentrations suggests that insulin has a specific effect in the chick embryo, and that it could modulate glucose metabolism in ovo as well. The transient sensitivity of the embryo to insulin is discussed in relation to behavior of mesodermal cells.
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Référence bibliographique : Rol, 59472
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Référence bibliographique : Rol, 59473
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Référence bibliographique : Rol, 59902
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Référence bibliographique : Rol, 59904
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Référence bibliographique : Rol, 59909
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Référence bibliographique : Rol, 59903
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The purpose of this study was to determine if there were differences between in-school and out-of-school day care centres. Five centres housed in public schools and five housed in other locations were selected for the research. Aquality assessment was administered in each centre which examined the following components - physical environment, adult social structure and socia-emotional environment, children's socia-emotional environment, cognitive stimulation program and toys and equipment. Quantitative analysis using simple t-tests showed a significant difference between in-school and out-of-school day cares for the physical environment variable. Differences approached significance for the children's socia-emotional environment variable as well as overall quality. Qualitative analysis using a triangulated methodology revealed noticeable differences for every variable. The researcher concluded that both the quality of the physical environment and the capabilities of the administrators strongly influence the quality of the day care environment. This study also included an assessment of children's attitude toward learning. No significant difference was found between in-school and out-of-school centres.
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Spontaneous teratocarcinomas are ovarian or testicular tumors which have their origins in germ cells. The tumors contain a disorganized array of benign differentiated cells as well as an undifferentiated population of malignant stem cells, the embryonal carcinoma or EC cells. These pluripotent stem cells in tissue culture share many properties with the transient pluripotent cells of the early embryo, and might therefore serve as models for the investigation of developmental events ill vitro. The property of EC cells of prime interest in this study is an in vivo phenomenon. Certain EC cell lines are known to be regulated ill vivo and to differentiate normally in association with normal embryonic cells, resulting in chimeric mice. These mice have two genetically distinct cell populations, one of which is derived from the originally malignant EC cells. This has usually been accomplished by injection of the EC cells into the Day 3 blastocyst. In this study, the interactions between earlier stage embryos and EC cells have been tested by aggregating clumps of EC cells with Day 2 embryos. The few previous aggregation studies produced a high degree of abnormality in chimeric embryos, but the EC cells employed had known chromosomal abnormalities. In this study, two diploid EC cell lines (P19 and Pi0) were aggregated with 2.5 day mouse embryos, and were found to behave quite differently in the embryonic environment. P19 containing aggregates generally resorbed early, and the few embryos recovered at midgestation were normal and non-chimeric. Pi0 containing aggregates survived in high numbers to midgestation, and the Pi0 cells were very successful in colonizing the embryo. All these embryos were chimeric, and the contribution by the EC cells to each chimera was very high. However, these heavily chimeric embryos were all abnormal. Blastocyst injection had previously produced some abnormal embryos with high Pl0 contributions in addition to the live born mice, which had lower EC contributions. This study now adds more support to the hypothesis that high EC contributions may be incompatible with normal development. The possibility that the abnormalities were due to the mixing of temporally asynchronous embryonic cell types in the aggregates was tested by aggregating normal pluripotent cells taken from 3.5 day embryos with 2.5 day embryos. Early embryo loss was very high, and histological studies showed that the majority of these embryos died by 6.5 days development. Some embryos escaped this early death such that some healthy chimeras were recovered, in contrast to recovery of abnormal chimeric embryos following Pl0-morula aggregations, and non-chimeric embryos following P19-morula aggregations. This somewhat surprising adverse effect on development following aggregation of normal cell types suggests that there are developmental difficulties associated with the mixing of asynchronous cell types in aggregates. However, the greater magnitude of the adverse effects when the aggregates contained tumor derived cells suggests that EC cells should not be considered the complete equivalent of the pluripotent cells of the early embryo.
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Two groups of nonmaternal day care providers, one made up of in-horne caregivers, and the other of providers of day care in centres, were asked to focus on their goals for the children in their care. A group of kindergarten teachers was asked to consider any differences they noticed in children in· the two types of day care mentioned above. It was found that in-horne caregivers, through flexibility, meet the developmental goals of the children in their care. Providers of tlay care in centres used a more structured and social program in order to meet the overall developmental goals for the children in their care. It was found that the kindergarten teachers noticed differences in the children in their classes in terms of their attitude and social behaviour. The type and quality of care were seen as possible influences on this outlook of young children in kindergarten. The one common element that each group highlighted with respect to the effects of day care at the kindergarten level was the important role of the family in the child's development not only in day care, but also in kindergarten class. There is still a strong need to determine the effects of various types of day care at all levels, and specifically at the kindergarten level. The more the kindergarten teacher is able to understand about the child's day care experience, and his or her own life,the better off these children in day care will be. This study confirmed both the importance of quality in child care, and the important role of the family in the child care decision.
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Little research has been done on inclusive education in the context of the Jewish day school general studies classroom. This qualitative case study research examines the inclusive teaching experiences of 2 general studies teachers in their respective grade 4 classrooms in 2 traditionally structured dual curriculum Jewish day schools. Data analysis of qualitative open-ended interviews, classroom observations, postobservation discxissions, and school and formal curriculum documents yielded understandings about the participants' inclusive practice and the challenges of the traditional Jewish day school structure. Eight themes that emerged related to understandings and questions about time limitations, an emphasis on efficiency, the day school structure, inclusion models, the need for increased teacher collaboration, and tension between curriculum-as-plan and curriculum-as-lived. Discussion of the findings suggests the need for further research in inclusion and integrated curriculimi in order to better understand possible restructuring of the traditional Jewish day school fi-om the time efficiency constrained dual curriculiun structure to a more flexible structure conducive of a meaningful and dynamic lived curriculum.
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Chapman College Founders Day Banquet, Anaheim Convention Center, Anaheim, California, 1968. Left to right: Myron Cole, Mrs. C. C. Chapman, and Arlene Reasnor Sayres [author of Chapman Remembers].
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