The demonstration of opioid receptors by radioligand binding and the discovery of their endogenous peptide ligands has provided a new class of compounds that can be used for the development of novel opioids. The number of potential receptor targets for such opioids has been expanded by the identification of multiple opioid receptor types The development of highly selective opioid peptides using the principles of conformational restriction permits the analysis of the structure‐activity requirements of each receptor type, and is facilitating the (...) elucidation of the functional properties of the different opioid receptors. (shrink)

Introduction by the Rev. R. J. Fletcher -- The memory of Francis Bacon. A speech delivered in Gray's Inn hall at the tercentenary celebration by Mr. H. E. Duke -- List of benchers and guests present at the tercentenary celebration, 1908 -- Francis Bacon. A speech delivered by the Right Hon. A. J. Balfour, M. P., on the occasion of the unveiling of the Bacon statue at Gray's Inn [27th June 1912] -- Francis Bacon's essays: Of gardens and Of masques (...) and triumphs, reprinted from the earliest editions. (shrink)

Henrich et al. reject the within a narrowly-defined economic model, and are premature in claiming that they have demonstrated cross-cultural variability in as defined in broader evolutionary theory. We also question whether a key experimental condition, anonymity, can be maintained in the small, cohesive, social groupings employed in the study.

This paper presents a theory of reasoning with evidence in order to determine the facts in a criminal case. The focus is on the process of proof, in which the facts of the case are determined, rather than on related legal issues, such as the admissibility of evidence. In the literature, two approaches to reasoning with evidence can be distinguished, one argument-based and one story-based. In an argument-based approach to reasoning with evidence, the reasons for and against the occurrence of (...) an event, e.g., based on witness testimony, are central. In a story-based approach, evidence is evaluated and interpreted from the perspective of the factual stories as they may have occurred in a case, e.g., as they are defended by the prosecution. In this paper, we argue that both arguments and narratives are relevant and useful in the reasoning with and interpretation of evidence. Therefore, a hybrid approach is proposed and formally developed, doing justice to both the argument-based and the narrative-based perspective. By the formalization of the theory and the associated graphical representations, our proposal is the basis for the design of software developed as a tool to make sense of the evidence in complex cases. (shrink)

In their environment, plants are continuously submitted to natural stimuli such as wind, rain, temperature changes, wounding, etc. These signals induce a cascade of events which lead to metabolic and morphogenetic responses. In this paper the different steps are described and discussed starting from the reception of the signal by a plant organ to the final morphogenetic response. In our laboratory two plants are studied: Bryonia dioica for which rubbing the internode results in reduced elongation and enhanced radial expansion and (...) Bidens pilosa for which the response occurs at distance, hence pricking the cotyledon of a plantlet induces the growth inhibition of both the hypocotyl and the axillary bud of the pricked cotyledon. Reception of the signal and transmission of the message. In Bryonia the signal is received by epidermal cells while in Bidens they are the cells adjacent to the midrib of the cotyledon which receive the mechanical signal. In both plants the message is transmitted via a wave of electric depolarization. This latter is composed of an action potential associated with a slow wave whose transmission rates are respectively 1cm s−1 and 1 mm s−1. Recent results have shown the involvement of Ca2+ in the triggering of the slow wave and the role of the H+ pump during the slow wave. Transient and fast biochemical responses. An entry of extraceilular Ca2+ into the cells and a transient increase in IP3 occur within seconds following the mechanical stimulus. At the same time, the membrane becomes more fluid, correlated with qualitative changes in phospholipids. The rapid increase in the concentration of peroxidated lipids may be correlated with ethylene biosynthesis which is stimulated after rubbing. Other parameters such as cytoplasmic pH, relative water content, hydric potential, membrane potential and modifications of K+, Mg2+-ATPase and Ca2+-ATPase activities, play a key role in the early responses induced by the traumatisms. Irreversible-biochemical responses. The mechanical stimulus performed on a Bryonia internode induces an acceleration of: i) enzymatic activities related to the lignification, ii) esterification of phenolic acids in the cell wall. Consequently the lignification process is accelerated. Storage of the information. After being received by the target cells the information can be stored during several days before being expressed. At the level of cotyledonary bud, the first message, previously stored, can be expressed or not by a second treatment. Bidens thus behaves as if it was able to “store” and to “retrieve” morphogenetic messages, using a sort of rudimentary memory. The nuclei of the bud cells of the pricked cotyledon show that these cells, initially in G2 phase, divide and then remain in the G1 phase. In Bryonia, calli derived from young stimulated internodes, keep thigmomorphogenetic characteristics during several weeks. In the last part of this paper the particularity of our plant model which permits a study of the transmission and storage of the message, is underlined. The links between the different steps induced by the stimulus are discussed. Special attention is devoted to second messengers and to the amplification of the message. (shrink)

In their environment, plants are continuously submitted to natural stimuli such as wind, rain, temperature changes, wounding, etc. These signals induce a cascade of events which lead to metabolic and morphogenetic responses.In this paper the different steps are described and discussed starting from the reception of the signal by a plant organ to the final morphogenetic response. In our laboratory two plants are studied: Bryonia dioica for which rubbing the internode results in reduced elongation and enhanced radial expansion and Bidens (...) pilosa for which the response occurs at distance, hence pricking the cotyledon of a plantlet induces the growth inhibition of both the hypocotyl and the axillary bud of the pricked cotyledon. (shrink)

Until quite recently, mind-body dualism has been regarded with deep suspicion by both philosophers and scientists. This has largely been due to the widespread identification of dualism in general with one particular version of it: the interactionist substance dualism of Réné Descartes. This traditional form of dualism has, ever since its first formulation in the seventeenth century, attracted numerous philosophical objections and is now almost universally rejected in scientific circles as empirically inadequate. During the last few years, however, renewed attention (...) has begun to be paid to the dualistic point of view, as a result of increasing discontent with the prevailing materialism and reductionism of contemporary scientific and philosophical thought. Awareness has grown that dualism need not be restricted to its traditional form and that other varieties of dualism are not subject to the difficulties commonly raised against Descartes' own version of it. -/- Interest in these alternative versions of dualism is growing fast today, because it seems that they are capable of capturing deep-seated philosophical intuitions, while also being fully consistent with the methodological assumptions and empirical findings of modern scientific work on the human mind and brain. The object of this book is to provide philosophers, scientists, their students, and the wider general public with an up-to-date overview of current developments in dualistic conceptions of the mind in contemporary philosophy and science. (shrink)

This is a unique, groundbreaking study in the history of philosophy, combining leading men and women philosophers across 2600 years of Western philosophy, covering key foundational topics, including epistemology, metaphysics, and ethics. Introductory essays, primary source readings, and commentaries comprise each chapter to offer a rich and accessible introduction to and evaluation of these vital philosophical contributions. A helpful appendix canvasses an extraordinary number of women philosophers throughout history for further discovery and study.

Book reviewed in this article: Clinical Ethics: A Practical Approach to Ethical Decisions in Clinical Medicine. By Albert R. Jonsen, Mark Siegler, and William J. Winslade.

Of all the developments in twentieth century physics, none has given rise to more heated debates than the changes in our understanding of science precipitated by the quantum revolution''. In this revolution, Niels Bohr's dramatically non-classical theory of the atom proved to be the springboard from which the new atomic physics drew it's momentum. Furthermore, Bohr's contribution was crucial not only because his interpretation of quantum mechanics became the most widely accepted view but also because in his role as educator (...) and spokesman for atomic physics Bohr was very much the patron spirit of the entire quantum revolution. The conceptual framework which he proposed to provide a new viewpoint for understanding the quantum theoretical description of atomic systems became for most of this century the dominant outlook of countless productive experimental and theoretical physicists. He called this new framework complementarity''. (shrink)

Background:Moral distress occurs when constraints prevent healthcare providers from acting in accordance with their core moral values to provide good patient care. The experience of moral distress in nurses might be magnified during the current Covid-19 pandemic.Objective:To explore causes of moral distress in nurses caring for Covid-19 patients and identify strategies to enhance their moral resiliency.Research design:A qualitative study using a qualitative content analysis of focus group discussions and in-depth interviews. We purposively sampled 31 nurses caring for Covid-19 patients in (...) the acute care units within large academic medical systems in Maryland and New York City during April to June 2020.Ethical considerations:We obtained approval from the Institutional Review Board at the University of Maryland, Baltimore.Results:We identified themes and sub-themes representative of major causes of moral distress in nurses caring Covid-19 patients. These included (a) lack of knowledge and uncertainty regarding how to treat a new illness; (b) being overwhelmed by the depth and breadth of the Covid-19 illness; (c) fear of exposure to the virus leading to suboptimal care; (d) adopting a team model of nursing care that caused intra-professional tensions and miscommunications; (e) policies to reduce viral transmission (visitation policy and PPE policy) that prevented nurses to assume their caring role; (f) practicing within crisis standards of care; and (g) dealing with medical resource scarcity. Participants discussed their coping mechanisms and suggested future strategies.Discussion/Conclusion:Our study affirms new causes of moral distress related to the Covid-19 pandemic. Institutions need to develop a supportive ethical climate that can restore nurses’ moral resiliency. Such a climate should include non-hierarchical interdisciplinary spaces where all providers can meet together as moral peers to discuss their experiences. (shrink)

There have recently been a number of attempts to put forth a philosophical account of the nature of attention. Many such theories aim at giving necessary and sufficient conditions for something to be attention. In this paper I will argue that any such theory must meet two criteria. Then I shall examine four prominent accounts of attention in some detail, and argue that all of them face problems meeting one or the other of the criteria. I propose an alternative view, (...) which involves taking seriously a pluralistic approach to attention. If the position I advocate is correct, then much of the philosophical work currently carried out on attention is fundamentally misguided, as most of the prominent theories of attention currently available are based upon assumptions which should be rejected. (shrink)