Transformation Of Children Research Articles

Electrical impedance scanning-application of this new technique for lymph node evaluation in children.

Precise assessment of lymph nodes is crucial to the choice of therapy and prediction of outcome in cases of malignancy. Electrical impedance scanning (EIS) is being experimentally investigated for potential use as a diagnostic tool for differentiation of malignant lesions. Malignancies show different electrical properties with changes in conductivity and capacitance that can be analysed by EIS. Using a TransScan TS-2000 (TransScan Medical, Migdal Ha'Emek, Israel, distributed by Siemens-Elema AB, Solna, Sweden), EIS has been used in various studies for the identification of breast cancer as well as for characterisation of superficial lesions. To evaluate the reliability of EIS for classifying lymph nodes in a pediatric population with sonographically suspicious lesions and to prove its accuracy. The study population consisted of 77 children (42 boys, 35 girls) aged 1.1-17.1 years. All EIS results were compared to either histopathological findings or long-term follow-up investigations. Sensitivity for malignancies using EIS was 75% and specificity was 87%. The negative predictive value was 93% and the positive predictive value was 60%. This study suggests the potential usefulness of EIS as an additional imaging modality for the differentiation of lymph-node diseases in children. The histopathological spectrum of malignant lymph node transformation in children compared to studies in adults, and the characteristic meltdown in inflammatory or granulomatous transformed nodes, pose challenges to differentiation based on sonographic evaluation, and also to EIS classification.

Romanticism and Children's Literature in Nineteenth-Century England

In England at the turn of the nineteenth century, the advent of Romanticism coincided with major changes in ideas about children and childhood, eventually resulting in a great flowering of imaginative children's literature. In contrast to the previous century's stern moral tales, children's books began to appeal to the unsullied powers of perception, cognition, and creativity thought by the Romantics to reside in pre-adolescents, and also to the anxieties of adults who longed to reclaim their own lost childhood selves. These essays document and examine the transformation of children's literature during the Romantic period, and trace Romanticism's influence on Victorian children's literature. Using a variety of critical approaches, including neo-historicist, feminist, mythic, reader-response, and formalist, the contributors challenge established dichotomies in children's literature regarding morality and imagination. Rather, as they demonstrate, a complex interplay of instruction and delight ran throughout nineteenth-century texts for and about children. In addition, they document some of the ways the child was perceived and interpreted, secularized and spiritualized, by such writers as Samuel Taylor Coleridge, William Wordsworth, Maria Edgeworth, Mrs. Sherwood, Hesba Stretton (Sarah Smith), Juliana Ewing, George MacDonald, Lewis Carroll, Frances Hodgson Burnett, and E. Nesbit.

Ultrasonographic diagnosis of portal vein cavernous transformation in children.

The aim of this work was to evaluate the efficiency, sensitivity, and specificity of ultrasonographic findings in the diagnosis of portal vein cavernous transformation and secondary splanchnic hypertension in children. Twenty patients with esophageal varices on endoscopic sclerotherapy, with ages ranging from 1 to 15 years (mean of 7.5), were compared with 20 age-matched normal asymptomatic controls. In 17 cases, diagnosis was confirmed by splenoportography. Ultrasonographic portal vein features, respiratory variations in splenic and superior mesenteric veins, lesser omentum to aorta diameter ratio and spleen size, as well as the presence of vessels in the lesser omentum and of spontaneous anastomoses, were analyzed in both groups. The efficiency of ultrasonography to establish a diagnosis of portal vein cavernous transformation reached 100%. Splenic and superior mesenteric vein respiratory variation was negligible in patients and inspiration versus expiration diameter differences ranged from 1 to 4 mm (mean of 2.4) in controls (p less than .001). Mean lesser omentum to aorta ratio was 2.07 in patients versus .9 in controls (p less than .001). Splenomegaly was found in all but two cases; lesser omentum vessels were visualized in nine cases; whereas five presented spontaneous splenorenal anastomoses and gallbladder varices were observed in five patients. Thus, ultrasonography allowed portal vein cavernous transformation to be diagnosed throughout; portal hypertension was also detected. It may be concluded that ultrasonography, either alone or associated with endoscopy, provides a reliable method for portal vein cavernous transformation diagnosis. Angiography should be reserved for preoperative or controlled hemodynamic studies.

The News Session in Infants and Primary School Classrooms

Abstract This paper presents an analysis of the social organisation of news sessions in infants and primary classrooms. We argue that these events are essentially occasions for the initiation of pupils into aspects of school knowledge and culture, although they are ostensibly spaces in the school day where children may introduce their own topics and interests. We show, through a detailed conversational analysis of varieties of morning news events, how these activities are stage‐managed, what the nature of the children's contributions are, and how these are organised to legitimise school knowledge and to define pupil‐teacher relationships, especially the teacher as primary receiver and announcer of news. The transformation of children into pupils is seen to occur in news sessions as much as in any other classroom activity. The distinctive feature of news sessions in the first years of schooling is that these are early instruction in how the private/personal realm can be fitted to the contours of the public/official curriculum, how everyday life interests are subordinated to and appropriated by the culture of the school.

Lymphocyte transformation in children with neuroblastoma.

Using a simple fingerstick-whole blood technique, we demonstrated that patients with disseminated neuroblastoma have diminished lymphocyte responses to phytohemagglutinin (PHA) and that their sensitivity to antilymphocyte serum inhibition of PHA responses was increased over that of tumor-free controls. These altered immunologic reactivities led us to question the chronologic sequence between the occurrence of the tumor and the lymphocyte defect. Tumor-bearing patients had serum substances that exerted an inhibitory effect on the transformation responses of lymphocytes from unrelated normal individuals; these substances may be present in sera for long periods after the tumor is eliminated.

Development of Equivalence Transformations in Children

Development of Equivalence Transformations in Children