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31.
Associations Among Infant Iron Deficiency,Childhood Emotion and Attention Regulation,and Adolescent Problem Behaviors 下载免费PDF全文
Patricia East Erin Delker Betsy Lozoff Jorge Delva Marcela Castillo Sheila Gahagan 《Child development》2018,89(2):593-608
This study examined whether iron deficiency (ID) in infancy contributes to problem behaviors in adolescence through its influence on poor regulatory abilities in childhood. Chilean infants (N = 1,116) were studied when there was no national program for iron fortification (1991–1996), resulting in high rates of ID (28%) and iron‐deficiency anemia (IDA, 17%). Infants (54% male) were studied at childhood (Mage = 10 years) and adolescence (Mage = 14 years). IDA in infancy was related to excessive alcohol use and risky sexual behavior in adolescence through its effect on poor emotion regulation in childhood. Attentional control deficits at age 10 were also related to both infant IDA and heightened risk taking in adolescence. Findings elucidate how poor childhood regulatory abilities associated with infant IDA compromise adjustment in adolescence. 相似文献
32.
Sheila W. Valencia 《Cultura y Educación》2013,25(19-20):69-76
Además y más allá de la descripción de las características formales del método de carpeta, este artículo propone que el valor real de un buen método de carpeta es su capacidad para cambiar actitudes y actividades de estudiantes y educadores, extendiendo como guía de aprendizaje y meta-conciencia de lo que se hace el propio proceso de evaluación. 相似文献
33.
本文研究在PH5.5的六次甲基四胺缓冲体系中,以5-Br-PADAP作为指示剂,用EDTA滴定铅精矿中铅含量。试验结果表明,终点变色敏锐,测定结果变异系数为0.27%(n=5)。 相似文献
34.
Raphael Jacqueline Tobias Sheila Greenberg Richard 《Journal of Science Teacher Education》1999,10(2):147-158
Journal of Science Teacher Education - 相似文献
35.
Babli Dhaliwal Vasanti R. Rao Girija Ramaswamy 《Indian journal of clinical biochemistry : IJCB》1995,10(2):110-111
Serum Beta human chorionic gonadotropin (BhCG) was measured in 25 healthy controls and 75 cases with gestational trophoblastic
neoplasms and testicular tumor using RIA kit from BARC, Bombay and ELISA kit from Abbott Diagnostics, USA. Regression Analysis
of the values obtained for controls and cases by both the methods were statistically significant P 0.001. 相似文献
36.
The aim of this paper is to propose information literacy as a soft applied discipline, of key importance in the information society. This is contrasted with the characterization of information literacy as a personal attribute in the U.S. and Australian Information Literacy standards. Vannevar Bush's vision of the technologically connected and enabled scientist is used to introduce a discussion of citizen's information needs and responsibilities in an age of “cheap complex devices.” The authors emphasize the key role of information literacy in this information society. Information literacy is identified as a soft applied discipline, with reference to disciplinary indicators that have been identified in the literature. Building on this concept of an information literacy discipline, the authors propose a mission for information literacy education focused around three elements: information literacy for citizenship, information literacy for economic growth, and information literacy for employability. The paper concludes by identifying that in terms of preparing citizens for managing and taking action in society, information literacy has much to contribute, and that it is vital to nurture this emergent discipline. 相似文献
37.
38.
群众体育运动小区化代表着现代社会群众体育运动的一种发展趋势,深圳在这一方面一直走在全国的前列。本文运用社会学、经济学、体育学、统计学等基本理论和综合研究方法,通过问卷调查取得了大量的第一手研究资料,从不同的角度综合研究深圳住宅小区群众体育发展状况,在此基础上就住宅小区群众体育的发展提出相关建议。 相似文献
39.
Children at risk for early reading difficulties were identified on entry into kindergarten, and half of these children received small-group intervention two to three times a week during their kindergarten year. The other half received whatever remedial assistance was offered by their home schools. These children were again assessed at the beginning of first grade, and those who continued to have difficulties in reading received either one-to-one daily tutoring offered by project teachers from the beginning to the end of first grade or whatever remedial assistance was offered by their home schools over the same time period. All target children were periodically assessed through the end of third grade. Results suggest that either kindergarten intervention alone or kindergarten intervention combined with first-grade intervention are both useful vehicles for preventing early and long-term reading difficulties in most at-risk children. 相似文献
40.
He XL Yin HL Wu J Zhang K Liu Y Yuan T Rao HL Li L Yang G Zhang XM 《Journal of Zhejiang University. Science. B》2011,12(1):32-39
Radiation therapy has been widely applied in cancer treatment. However, it often causes thrombocytopenia (deficiency of white
blood cells) as an adverse effect. Recombinant human interleukin-6 (rhIL-6) has been found to be a very effective way against
this thrombocytopenia, but IL-6 has low stability in blood, which reduces its efficacy. To increases the stability and half-life
of rhIL-6, it was modified by polyethylene glycol (PEG). The pharmacokinetics and the tissue distribution of PEG-rhIL-6 labeled
with 125I were examined after subcutaneous injection in rats. The pharmacokinetic pattern of PEG-rhIL-6 was defined with linear-kinetics,
and we fitted a one-compartment model with half-lives of 10.44–11.37 h (absorption, t
1/2K
a) and 19.77–21.53 h (elimination, t
1/2Ke), and peak concentrations at 20.51–21.96 h (t
peak) in rats. Half-lives and t
peak of PEG-rhIL-6 were longer than those of rhIL-6 previously reported. In the present study, for deposition of PEG-rhIL-6 in
rats, the tissue distribution examination showed that blood was the major organ involved, rather than liver. However, as to
the elimination of PEG-rhIL-6, the major organ was the kidney. The excretion fraction of the injection dose recovered from
urine was 23.32% at 192 h after subcutaneous administration. Less than 6% of PEG-rhIL-6 was eliminated via the feces at 192
h. These results indicate that PEG-rhIL-6 is a good candidate drug formulation for patients with cancer. 相似文献