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241.
Rita Christopher K. Taranath Shetty 《Indian journal of clinical biochemistry : IJCB》1997,12(2):102-107
The cerebral sphingolipidoses which form part of a larger group of lysosomal disorders can be detected and conclusively confirmed
by the demonstration of the relevent enzyme deficiency in easily available tissue samples like serum. We have assayed acid
β-galactosidase, β-hexosaminidase and its isozymes hexosaminidase A and B, and arylsulfatase A in the serum of patients with
progressive cerebral dysfunction and detected 18 patients with enzyme defects, thereby confirming the diagnosis of a specific
type of cerebral lipidosis in these patients. The assay of serum lysosomal enzymes was of immense diagnostic use as it obviated
the need for highly invasive techniques like a brain biopsy. 相似文献
242.
Rafael P. Silva Toby Mündel Antônio J. Natali Maurício G. Bara Filho Jorge R. P. Lima Rita C. G. Alfenas 《Journal of sports sciences》2013,31(7):725-732
Abstract In this study we investigated pre-training hydration status, fluid intake, and sweat loss in 20 elite male Brazilian adolescent soccer players (mean ± s: age 17.2 ± 0.5 years; height 1.76 ± 0.05 m; body mass 69.9 ± 6.0 kg) on three consecutive days of typical training during the qualifying phase of the national soccer league. Urine specific gravity (USG) and body mass changes were evaluated before and after training sessions to estimate hydration status. Players began the days of training mildly hypohydrated (USG > 1.020) and fluid intake did not match fluid losses. It was warmer on Day 1 (33.1 ± 2.4°C and43.4 ± 3.2% relative humidity; P < 0.05) and total estimated sweat losses (2822 ± 530 mL) and fluid intake (1607 ± 460 mL) were significantly higher (P < 0.001) compared with Days 2 and 3. Data also indicate a significant correlation between the extent of sweat loss and the volume of fluid consumed (Day 1: r = 0.560, P = 0.010; Day 2: r = 0.445, P = 0.049; Day 3: r = 0.743, P = 0.0001). We conclude that young, native tropical soccer players arrive hypohydrated to training and that they exhibit voluntary dehydration; therefore, enhancing athletes' self-knowledge of sweat loss during training might help them to consume sufficient fluid to match the sweat losses. 相似文献
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The present study aims to investigate the effects of a design experiment developed for third-grade students in the field of mathematics word problems. The main focus of the program was developing students?? knowledge about word problem solving strategies with an emphasis on the role of visual representations in mathematical modeling. The experiment involved five experimental and six control classes (N?=?106 and 138, respectively) of third-grade students. The experiment comprised 20 lessons with 73 word problems, providing a systematic overview of the basic word problem types. Teachers of the experimental classes received a booklet containing lesson plans and overhead transparencies with different types of visual representations attached to the word problems. Students themselves were invited to make drawings for each task, and group work and teacher-led discussion shaped their beliefs about the role of visual representations in word problem solving. The effect sizes of the experiment were calculated from the results of two tests: an arithmetic skill and a word problem test, and the unbiased estimates for Cohen??s d proved to be 0.20 and 0.62. There were significant changes also in experimental group students?? beliefs about mathematics. The experiment pointed to the possibility, feasibility, and importance of learning about visual representations in mathematical word problem solving as early as in grade?3 (around age 9?C10). 相似文献
246.
Ian M. Grey Cora Bruton Rita Honan Roisin McGuinness Michael Daly 《Educational Psychology in Practice》2007,23(4):317-327
The purpose of this study was to determine the effects of a cooperative learning (CL) intervention on the levels of social and task engagement of a child with autistic spectrum disorder (ASD) conducted in a mainstream class setting and a child with ASD implemented in a special needs class setting. The target children were two 8‐year‐old boys diagnosed with high functioning autism. Both children were placed in CL groups which included three typically developing peers, one male and two females. Four baseline sessions taught in a traditional teaching format and seven CL intervention sessions based on a “learning together/conceptual approach” took place. All sessions were recorded for video analysis. CL was found to be successful in substantially increasing the level of social engagement for both the child in the special needs class and the child in the mainstream class. CL was not found to facilitate task engagement. Active task engagement was found to remain relatively stable and passive task engagement was found to decrease for one child and remain stable for the other. Teacher concerns and issues relating to the practical implementation of CL in both settings are discussed. 相似文献
247.
Ho Wah Kam Poon Tsul Yeong Rita Skuja Ool Hui Pín Teo Suan Eng Hazel Mah 《Asia Pacific Journal of Education》1983,5(2):49-63
The present report is based on three pilot projects that aimed to explore and describe teachers' perceptions of their training and the transition experience of teachers in the shift from being a student on a teacher training programme to being a full-fledged teacher in the primary or secondary school. The three studies were prompted by the concern for a possible lack of fit, even under the best circumstances, between pre-service training and the work of a full-time teacher in a typical school. In the main, then, this report focuses on the continuity between campus-based training and teaching practice and full-time teaching experience. 相似文献
248.
Rita L. Irwin Dónal O'Donoghue 《The International Journal of Art & Design Education》2012,31(3):221-236
Two artists involved in ‘socially engaged art’ practice were invited to work with art education teacher candidates and instructors in an effort to rethink notions of teaching, learning and art. We initiated this residency, which we called ‘The Summerhill Residency’, to examine how learning encounters might create environments for meaningful exchanges between the ways in which artists and secondary art education teacher candidates learn to think about pedagogy and the nature of artistic learning. Drawing upon Bourriaud's theory of relational aesthetics, we consider, yet trouble, the relational aspects of the processes and products of the artist residency, and examine the crisis of imagination that permeated teacher candidates' experiences. Throughout the project, a/r/tography offered a rich form of living enquiry that opened up possibilities for learning within a community of enquirers. 相似文献