Dialogue education is effective as a method to teach maternal toddler feeding practices

Title: Dialogue education is effective as a method to teach maternal toddler feeding practices Objectives: 1) Measure the effectiveness of one or two workshops using dialogue education to teach healthy toddler feeding practices, specifically a) to allow child self-regulation of satiety, b) to maintain a schedule for meals and snacks and c) to role-model healthy eating when compared to a control group. 2) Measure the effectiveness of dialogue education to teach appropriate stages of growth in order to increase mothers’ ability to know when their children are at a healthy weight compared to a control group 3)Compare baseline maternal toddler feeding practices between low-income Latina mothers participating in Early Head Start (EHS) and Early Migrant/Seasonal Head Start (EMSHS). Methods: Sixty six mothers participating in EHS (n=25 and EMSHS (n=41) completed a 24 item Likert scale (1 to 5 with 1=Never/Not confident/Extremely unlikely, 5=Always/Very confident/Extremely likely) to assess behavior, self-efficacy and intent regarding 3 domains of toddler feeding practice: self-regulation of hunger and satiety, scheduling meals and snacks, and parental role modeling. Mean Likert scores for each question were analyzed by subgroup. A two-part educational intervention was developed to improve these three domains of healthy toddler feeding practices and knowledge of stages of growth. Participants were recruited primarily from EMSHS and were grouped based on level of participation (1 workshop, 2 workshops or control). Results: Objective one:One-way ANOVA analysis showed improvement from baseline to post-intervention for self-regulation (baseline x=3.130 0.499; post-intervention x=3.496 0.603; p=0.030) and role-modeling behavior (baseline x=3.757 ; post-intervention x=4.096 0.581, n=23, p=0.035) for those who participated in one or two workshops. Two-sample t-tests of post-intervention scores between control and a combined intervention group (Group 1 and Group 2) showed that the combined group scored significantly higher in allowing self-regulation behavior (control x=3.036 , n=11; combined intervention group x=3.496 0.603, n=23, p=0.016). Regression showed that intent (p=0.03) and self-efficacy (p Objective two: No significant changes in self-efficacy or knowledge of stages of growth were observed among the three treatment groups. Perceptions of healthy weight did not change significantly from baseline to post-intervention. Objective three: Mothers in EHS and EMSHS groups were similar for the most part in their parental feeding practices. The EMSHS mothers maintained a schedule for meals and snacks more than EHS mothers (EMSHS x=3.323 , n=41, EHS x=2.850 , n=25; p=0.004). The EHS mothers, however, limited sweets more frequently than EMSHS mothers (EMSHS x=3.28 , n=41, EHS x=2.66 , n=25; p=0.024). Levels of self-efficacy and intent were similar for both groups, with EHS mothers scoring higher for confidence in staying calm during stressful meal times (EHS x=3.24 , n=25; EMSHS x=2.56 , n=41; p-value=0.004) and intent to allow self-regulation (EHS x=4.125 , n=8; EMSHS x=3.532 , n=25; p-value=0.068). Early Head Start mothers also identified the importance of exercise in maintaining a healthy weight significantly more than EMSHS mothers (p=0.031). Conclusion: Dialogue education is effective as a method to improve some aspects of authoritative feeding behavior. One workshop was sufficient to observe improvements in self-regulation and role-modeling behavior. No improvements were observed in self-efficacy or knowledge of healthy weights. While similar for the most part, EHS mothers are more authoritative in their feeding practices compared to EMSHS. Keywords: Toddlers, Head Start, Division of Responsibility, Dialogue Educatio

The Effects of Sustained Silent Reading and Sustained Silent Writing on the Reading Attitudes of Fourth Grade Students

The primary purpose of this study was to investigate the effects of sustained silent reading and sustained silent writing on the reading attitudes of fourth grade students. The sample consisted of twenty-eight fourth grade students in a self-contained general classroom in a suburban community. Fourteen students made up the treatment group and fourteen students made up the control group. A modified form of the Estes Reading Attitude Scale was used as a pretreatment equivalency measure for both groups. The treatment group was involved with daily fifteen minute periods of sustained silent reading or sustained silent writing for a period of sixty school days. The control group was involved with daily fifteen minute periods of sustained silent reading for a period of sixty school days. Both groups were post tested using the same attitude scale. Data obtained from this measuring device was computer analyzed using a series of t tests. Results indicated that there is no statistically significant difference between the obtained mean scores on the Estes Attitude Scale for the treatment and control group

The grandkids aren't alright: the intergenerational effects of prenatal pollution exposure

Evidence shows that environmental quality shapes human capital at birth with long-run effects on health and welfare. Do these effects, in turn, affect the economic opportunities of future generations? Using newly linked survey and administrative data, providing more than 150 million parent-child links, we show that regulationinduced improvements in air quality that an individual experienced in the womb increase the likelihood that their children, the second generation, attend college 40-50 years later. Intergenerational transmission appears to arise from greater parental resources and investments, rather than heritable, biological channels. Our findings suggest that within-generation estimates of marginal damages substantially underestimate the total welfare effects of improving environmental quality and point to the empirical relevance of environmental quality as a contributor to economic opportunity in the United States

Scenery, Artistic Place, and Artistic Time in Folk Theater

Paper

The enzymes of the classical pentose phosphate pathway display differential activities in procyclic and bloodstream forms of Trypanosoma brucei

AbstractThe specific activities of each of the enzymes of the classical pentose phosphate pathway have been determined in both cultured procyclic and bloodstream forms of Trypanosoma brucei. Both forms contained glucose-6-phosphate dehydrogenase (EC 1.1.1.49), 6-phosphogluconolactonase (EC 3.1.1.31), 6-phosphogluconate dehydrogenase (EC 1.1.1.44), ribose-5-phosphate isomerase (EC 5.3.1.6) and transaldolase (EC 2.2.1.2). However, ribulose-5-phosphate 3′-epimerase (EC 5.1.3.1) and transketolase (EC 2.2.1.1) activities were detectable only in procyclic forms. These results clearly demonstrate that both forms of T. brucei can metabolize glucose via the oxidative segment of the classical pentose phosphate pathway in order to produce d-ribose-5-phosphate for the synthesis of nucleic acids and reduced NADP for other synthetic reactions. However, only procyclic forms are capable of using the non-oxidative segment of the classical pentose phosphate pathway to cycle carbon between pentose and hexose phosphates in order to produce d-glyceraldehyde 3-phosphate as a net product of the pathway. Both forms lack the key gluconeogenic enzyme, fructose-bisphosphatase (EC 3.1.3.11). Consequently, neither form should be able to engage in gluconeogenesis nor should procyclic forms be able to return any of the glyceraldehyde 3-phosphate produced in the pentose phosphate pathway to glucose 6-phosphate. This last specific metabolic arrangement and the restriction of all but the terminal steps of glycolysis to the glycosome may be the observations required to explain the presence of distinct cytosolic and glycosomal isoenzymes of glyceraldehyde-3-phosphate dehydrogenase and phosphoglycerate kinase. These same observations also may provide the basis for explaining the presence of cytosolic hexokinase and phosphoglucose isomerase without the presence of any cytosolic phosphofructokinase activity. The key enzymes of the Entner-Doudoroff pathway, 6-phosphogluconate dehydratase (EC 4.2.1.12) and 2-keto-3-deoxy-6-phosphogluconate aldolase (EC 4.1.2.14) were not detected in either procyclic or bloodstream forms of T. brucei

Ultra-fast artificial neuron: generation of picosecond-duration spikes in a current-driven antiferromagnetic auto-oscillator

We demonstrate analytically and numerically, that a thin film of an antiferromagnetic (AFM) material, having biaxial magnetic anisotropy and being driven by an external spin-transfer torque signal, can be used for the generation of ultra-short "Dirac-delta-like" spikes. The duration of the generated spikes is several picoseconds for typical AFM materials and is determined by the in-plane magnetic anisotropy and the effective damping of the AFM material. The generated output signal can consist of a single spike or a discrete group of spikes ("bursting"), which depends on the repetition (clock) rate, amplitude, and shape of the external control signal. The spike generation occurs only when the amplitude of the control signal exceeds a certain threshold, similar to the action of a biological neuron in response to an external stimulus. The "threshold" behavior of the proposed AFM spike generator makes possible its application not only in the traditional microwave signal processing but also in the future neuromorphic signal processing circuits working at clock frequencies of tens of gigahertz

An alternative strategy for trypanosome survival in the mammalian bloodstream revealed through genome and transcriptome analysis of the ubiquitous bovine parasite Trypanosoma (Megatrypanum) theileri

There are hundreds of Trypanosoma species that live in the blood and tissue spaces of their vertebrate hosts. The vast majority of these do not have the ornate system of antigenic variation that has evolved in the small number of African trypanosome species, but can still maintain long term infections in the face of the vertebrate adaptive immune system. Trypanosoma theileri is a typical example, it has a restricted host range of cattle and other Bovinae and is only occasionally reported to cause patent disease although no systematic survey of the effect of infection on agricultural productivity has been performed. Here, a detailed genome sequence and a transcriptome analysis of gene expression in bloodstream form T. theileri have been performed. Analysis of the genome sequence and expression showed that T. theileri has a typical kinetoplastid genome structure and allowed a prediction that it is capable of meiotic exchange, gene silencing via RNA interference and, potentially, density-dependent growth control. In particular, the transcriptome analysis has allowed a comparison of two distinct trypanosome cell surfaces, T. brucei and T. theileri, that have each evolved to enable the maintenance of a long-term extracellular infection in cattle. The T. theileri cell surface can be modelled to contain a mixture of proteins encoded by four novel large and divergent gene families and by members of a major surface protease gene family. This surface composition is distinct from the uniform variant surface glycoprotein coat on African trypanosomes providing an insight into a second mechanism used by trypanosome species that proliferate in an extracellular milieu in vertebrate hosts to avoid the adaptive immune response