Planning school lunch workshops

Thesis (Ed.M.)--Boston Universit

Spermiogenesis in the vermetid gastropod Dendropoma petraeum (Gastropoda, Prosobranchia)

The structure and maturation of the male gonad of the Mediterranean vermetid gastropod Dendropoma petraeum are described. Histological sections of the gonads were made throughout development and gonad activity was monitored at regular monthly intervals. During tha autumn monts the gonad is very small and is surrounded by a large quantity of connective tissue; it becomes more voluminous from December to August, with the highest growth peak in springtime. The stages of spermatogenesis were also observed and described

Practical work : Its effectiveness in primary and secondary schools in England

We report here on the first of two evaluations of a national project (Getting Practical: Improving Practical Work in Science – IPWiS) designed to improve the effectiveness of practical work in both primary and secondary schools in England. This first baseline evaluation of the effectiveness of practical work is based on a study of a diverse range of 30 practical lessons undertaken in non-selective primary (n = 10) and secondary (n = 20) schools prior to the teachers undertaking a training intervention designed to improve their effective use of practical work. A multi-site case study approach employing a condensed fieldwork strategy was used in which data were collected, using audiotape-recorded discussions, interviews and observational field notes. The analysis, based on work by Millar et al. and Tiberghien, considers what students do and think relative to what their teacher intended them to do and think. In both primary and secondary schools the widespread use of highly structured ‘recipe’ style tasks meant that practical work was highly effective in enabling students (n = 857) to do what the teacher intended. Whilst tasks in primary schools tended to be shorter than in secondary schools, with more time devoted to helping students understand the meaning of new scientific words, neither primary nor secondary teachers’ lesson plans incorporated explicit strategies to assist students in making links between their observations and scientific ideas. As such, tasks were less effective in enabling students to use the intended scientific ideas to understand their actions and reflect upon the data they collected. These findings suggest that practical work might be made more effective, in terms of developing students’ conceptual understanding – an aim of the IPWiS project – if teachers adopted a more ‘hands-on’ and ‘minds-on’ approach and explicitly planned how students were to link these two essential components of practical work

Addressing Untimely Healthcare Access of Veterans Receiving Care Through the Veteran Healthcare Administration (VHA)

The Veteran Healthcare Administration (VHA) serves over nine million veterans (Department of Veterans Affairs, 2023). They are responsible for the health and well-being of veterans with service-connected disabilities (Department of Veterans Affairs, 2023). A major focus for the organization is to keep improving access for veterans, as the population continues to grow (Department of Veterans Affairs, 2023). In 2018, congress passed the MISSION Act in hopes of increasing access for veterans. The MISSION Act would expand private healthcare access for veterans through the Veteran Community Care Program (VCCP) (MISSION ACT, 2018). Despite the initial benefits of the program, the MISSION Act failed to address many of the underlying problems related to inaccessible healthcare. As of 2024, the VHA continues to struggle with providing access due to administrative failures, data collection shortcomings, and a growing physician shortage, which continues to contribute to long wait times. This paper aims to help provide practical solutions, which will help provide veterans with timely and accessible healthcare appointments. In researching the topic possible avenues were found to improve accessibility, such as self-scheduling, telehealth expansion, and comprehensive legislation to set comprehensive wait time standards. Without immediate action to implement new legislative and administrative policies to address the VHA’s shortcomings, millions of veterans will continue to struggle to get the timely care they deserve

Growing the Use of Multicultural Literature Through Accretion

Children\u27s books play a significant role in students\u27 academic progress as well as in social and cultural learning. The opportunties afforded children through picture books should be a result of intentional choices. In this article, we provide guidance to preservice teachers on intentionally selecting multicultural literature. Current research suggests that authenticity and accuracy are two important elements of multicultural literature. We add to the body of research on multicultural literature by presenting accretion, the concept of expanding breadth of a cultural aspect. Included is a list of suggested picture books that demonstrate three expanded areas of accretion: content, illustrator studies, and awards

Sipunculus nudus: particulate components of the coelomic fluid and its relationship with brown bodies

Corpuscular components of the coelomic fluid were observed in Sipunculus nudus using cytochemical and cytoenzymatic methods. In particular, granulocytes were studied and two different types, based on morphology, chemical composition, and function were distinguished. Cell aggregates, identified as stem cells of type II granulocytes, were also evidenced. Besides, empty vesicles, vesicle fragments, laminar structures and brown bodies were observed. Based on the observation of their structure and ultrastructure, brown bodies were attributed with the function of accumulating foreign material, as well as aged components typical of the coelomic fluid

Principal-component-based population structure adjustment in the North American Rheumatoid Arthritis Consortium data: impact of single-nucleotide polymorphism set and analysis method

Population structure occurs when a sample is composed of individuals with different ancestries and can result in excess type I error in genome-wide association studies. Genome-wide principal-component analysis (PCA) has become a popular method for identifying and adjusting for subtle population structure in association studies. Using the Genetic Analysis Workshop 16 (GAW16) NARAC data, we explore two unresolved issues concerning the use of genome-wide PCA to account for population structure in genetic associations studies: the choice of single-nucleotide polymorphism (SNP) subset and the choice of adjustment model. We computed PCs for subsets of genome-wide SNPs with varying levels of LD. The first two PCs were similar for all subsets and the first three PCs were associated with case status for all subsets. When the PCs associated with case status were included as covariates in an association model, the reduction in genomic inflation factor was similar for all SNP sets. Several models have been proposed to account for structure using PCs, but it is not yet clear whether the different methods will result in substantively different results for association studies with individuals of European descent. We compared genome-wide association p-values and results for two positive-control SNPs previously associated with rheumatoid arthritis using four PC adjustment methods as well as no adjustment and genomic control. We found that in this sample, adjusting for the continuous PCs or adjusting for discrete clusters identified using the PCs adequately accounts for the case-control population structure, but that a recently proposed randomization test performs poorly

Fatal α-PVP and amphetamine poisoning during a sauna and autoerotic practices

We describe the sudden death of a middle-aged man while having a sauna under the influence of alpha-pyrrolidinovalerophenone (alpha-PVP) (PM blood concentration: 0.8 mg/L), amphetamine (0.34 mg/L), and other drugs (buprenorphine, benzodiazepines), and engaging in solitary sexual activities. The drugs' effects on the cardio-circulatory system and on body thermoregulation combined with the high temperatures are likely to have been central mechanisms leading to death. The high levels of adrenaline triggered by sexual arousal and the respiratory depression caused by buprenorphine, in association with benzodiazepines, may have also contributed to his death. This previously unreported type of accidental autoerotic death illustrates the risk of using amphetamine-like sympathomimetic drugs (e.g. cathinone derivates) in hot environments such as a sauna, and during sexual activities therein.Non peer reviewe

Bring the Real World into Your Classroom

Do your students enjoy working with practical problems that are real in their world? Have you been searching for resource materials which will encourage students to deal with practical problems in their own community? Fortunately, such materials are currently under development by the USMES project (Unified Science and Mathematics for Elementary Schools). USMES is producing interdisciplinary materials designed to stimulate students to explore relevant issues in the social as well as the natural sciences