Este artigo apresenta a contribuição de Alcindo Flores Cabral (1907-1982) - professor de química da Faculdade de Agronomia Eliseu Maciel, hoje incorporada à Universidade Federal de Pelotas - ao ensino de química, uma contribuição quase desconhecida pela própria comunidade química brasileira, embora reconhecida como relevante por diversos químicos estrangeiros importantes, como W. Hückel, G. Charlot, F. Strong, E. Fessenden e outros. A inovadora representação helicoidal de Cabral é apresentada não só em conexão com representações contemporâneas, mas também inclui-se uma incursão (...) pelos primeiros sistemas helicoidais propostos, os de Hinrichs e de Baumhauer. Apresentam-se alguns comentários não somente sobre a Classificação natural dos elementos, publicada em 1946, mas também sobre outros textos escritos para tornar mais eficaz o ensino de química. (shrink)

This paper presents the contributions of Alcindo Flores Cabral, professor of Chemistry at the Faculdade de Agronomia Eliseu Maciel, nowadays part of the Universidade Federal de Pelotas, to chemistry teaching. It is a contribution almost unknown to the Brazilian chemical community, although recognized as valuable by several renowned chemists abroad, like W. Hückel, G. Charlot, F. Strong, E. Fessenden and others. Cabral’s innovative helical representation is presented in connection not only with contemporary representations, but also an incursion is made into (...) the first helical systems proposed, those of Hinrichs and of Baumhauer. Some comments are made not only on Cabral’s Classificação Natural dos Elementos, published in 1946, but also about other texts he wrote for an efficient chemistry teaching. (shrink)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain (...) in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Overtreatment is when medical or dental services are provided with a higher volume or cost than is appropriate. This study aimed to investigate how a group of dentists in Switzerland, a wealthy country known to have high standards of healthcare including dentistry, evaluated the meaning of unnecessary treatments from an ethical perspective and, assessed the expected frequency of different possible behaviors among their peers.

Several decades of behavioral research have established that variations in socioeconomic status are related to differences in cognitive performance. Neuroimaging and psychophysiological techniques have recently emerged as a method of choice to better understand the neurobiological processes underlying this phenomenon. Here we present a systematic review of a particular sub-domain of this field. Specifically, we used the PICOS approach to review studies investigating potential relationships between SES and scalp event-related brain potentials. This review found evidence that SES is related to (...) amplitude variations in a diverse range of ERPs: P1, N1, N2, Error-Related Negativities, N400, auditory evoked potentials, negative difference waves, P3 and slow waves. These ERPs include early, mid-latency and late potentials that reflect a broad range of cognitive processes. In this review, all SES effects on ERPs appeared to reflect an impairment or a less efficient form of task-related neural activity for low-SES compared to high-SES individuals. Overall, these results confirm that a wide variety of distinct neural processes with different functional meanings are sensitive to SES differences. The findings of this review also suggest that the relationship between SES and some ERP components may depend on the developmental stage of study participants. Results are further discussed in terms of the current limitations of this field and future avenues of research. (shrink)

The aim of the study was to determine the acceptance and perception of Nigerian patients to medical photography. A self-administered questionnaire was distributed among Nigerian patients attending oral and maxillofacial surgery and plastic surgery clinics of 3 tertiary health institutions. Information requested included patients' opinion about consent process, capturing equipment, distribution and accessibility of medical photographs. The use of non-identifiable medical photographs was more acceptable than identifiable to respondents for all purposes (P = 0.003). Most respondents were favourably disposed to (...) photographs being taken for inclusion in the case note, but opposed to identifiable photographs being used for other purposes most especially in medical websites and medical journals. Female respondents preferred non-identifiable medical photographs to identifiable ones (P = 0.001). Most respondents (78%) indicated that their consent be sought for each of the outline needs for medical photography. Half of the respondents indicated that identifiable photographs may have a negative effect on their persons; and the most commonly mentioned effects were social stigmatization, bad publicity and emotional/psychological effects. Most of the respondents preferred the use of hospital-owned camera to personal camera/personal camera-phone for their medical photographs. Most respondents (67.8%) indicated that they would like to be informed about the use of their photographs on every occasion, and 74% indicated that they would like to be informed of the specific journal in which their medical photographs are to be published. In conclusion, non-identifiable rather than identifiable medical photography is acceptable to most patients in the studied Nigerian environment. The use of personal camera/personal camera-phone should be discouraged as its acceptance by respondents is very low. Judicious use of medical photography is therefore advocated to avoid breach of principle of privacy and confidentiality in medical practice. (shrink)

L'A. soutient, contre Germain Grisez, Joseph Boyle, John Finnis et William May, que le contrôle naturel des naissances pratiqué avec une intention mauvaise n'est pas contraception. Il montre que les auteurs identifient de façon incorrecte la fin prochaine de la contraception comme choix qu'il n'y ait pas d'enfant, alors que la fin prochaine véritable est d'empêcher un enfant de venir au monde . Ainsi donc, puisque en NFP un couple ne cherche pas à empêcher la venue au monde d'un enfant, (...) NFP n'implique pas d'action contraceptive. L'A. soutient aussi qu'identifier la fin prochaine comme choix qu'il n'y ait pas d'enfant ne spécifie pas de façon adéquate une classe homogène d'actes objectifs, bien que cela spécifie une classe homogène d'actes moraux. (shrink)

In Rethinking the Philosophy of Religion Today, this paper would like to advance the atheist solution to the problem of evil that has occasionally in the past been suggested by philosophers, but has largely been neglected in the Philosophy of Religion. In discussing this solution, the paper focuses on the reasons upon which philosophers regard the giving up of one or more of the attributes of God in theism to be an adequate solution to the problem of evil. Concerning the (...) more negative of these reasons, it shows that the latter revolves around the argument of the logical inconsistency of the theistic theory. Concerning the more positiveof these reasons, the focus is on the efforts of philosophers that have been following the suggestions of David Hume and that have started to experiment with solutions wherein at least one of the attributes of God is given up. The paper closes by showing that there exist an even more fundamental reason upon which it can be claimed that the problem of evil can be solved along this way without serious implications for a belief in God. (shrink)

Faith and sin prior to the Fragments -- Sin and salvation in the Philosophical fragments -- Anxiety and beyond -- Sin and salvation from the Three discourses -- To the three stages -- Sin and salvation in the Concluding unscientific postscript -- Sin, society, and the individual in the Two ages.

The conceptual framework and core courses of the certificate program in Preventive Engineering and Social Development of the Centre for Technology and Social Development at the University of Toronto are briefly described. Preventive approaches for the engi neering, management, and regulation of technology examine how technology fits into, interacts with, and depends on human life, society, and the biosphere in order to apply this understanding in a negative feed back mode to avoid or reduce harmful effects to these contexts. These (...) approaches represent a new paradigm for engineering education and practice enriched through STS. (shrink)

William Cunningham was a prominent British economist and economic historian. In this book, which was first published in 1917, Cunningham provides a concise guide to various aspects of political philosophy, with a particular focus on British political institutions. Appendices are included and textual notes are incorporated throughout. This book will be of value to anyone with an interest in political philosophy and the nature of governance.