Nanomedicine is yielding new and improved treatments and diagnostics for a range of diseases and disorders. Nanomedicine applications incorporate materials and components with nanoscale dimensions where novel physiochemical properties emerge as a result of size-dependent phenomena and high surface-to-mass ratio. Nanotherapeutics and in vivo nanodiagnostics are a subset of nanomedicine products that enter the human body. These include drugs, biological products, implantable medical devices, and combination products that are designed to function in the body in ways unachievable at larger scales. (...) Nanotherapeutics andin vivonanodiagnostics incorporate materials that are engineered at the nanoscale to express novel properties that are medicinally useful. These nanomedicine applications can also contain nanomaterials that are biologically active, producing interactions that depend on biological triggers. Examples include nanoscale formulations of insoluble drugs to improve bioavailability and pharmacokinetics, drugs encapsulated in hollow nanoparticles with the ability to target and cross cellular and tissue membranes and to release their payload at a specific time or location, imaging agents that demonstrate novel optical properties to aid in locating micrometastases, and antimicrobial and drug-eluting components or coatings of implantable medical devices such as stents. (shrink)

ABSTRACT:A wide range of research uses patterns of genetic variation to infer genetic similarity between individuals, typically referred to as genetic ancestry. This research includes inference of human demographic history, understanding the genetic architecture of traits, and predicting disease risk. Researchers are not just structuring an intellectual inquiry when using genetic ancestry, they are also creating analytical frameworks with broader societal ramifications. This essay presents an ethics framework in the spirit of virtue ethics for these researchers: rather than focus on (...) rule following, the framework is designed to build researchers’ capacities to react to the ethical dimensions of their work. The authors identify one overarching principle of intellectual freedom and responsibility, noting that freedom in all its guises comes with responsibility, and they identify and define four principles that collectively uphold researchers’ intellectual responsibility: truthfulness, justice and fairness, anti-racism, and public beneficence. Researchers should bring their practices into alignment with these principles, and to aid this, the authors name three common ways research practices infringe these principles, suggest a step-by-step process for aligning research choices with the principles, provide rules of thumb for achieving alignment, and give a worked case. The essay concludes by identifying support needed by researchers to act in accord with the proposed framework. (shrink)

BackgroundConcurrent with efforts to establish national and regional biorepositories in Africa is widespread endorsement of ethics committees as stewards of the interests of individual donors and their communities. To date, ethics training programs for IRB members in Botswana have focused on ethical principles and international guidelines rather than on the ethical dimensions of specific medical technologies and research methodologies. Little is known about the knowledge and concerns of current and prospective IRB members in Botswana with respect to export, reuse, storage, (...) and benefit-sharing of biospecimens.MethodsThis qualitative study examined perspectives of IRB members in Botswana about the collection and use of biospecimens in research. Forty-one IRB members representing five committees in Botswana participated in discussions groups in March 2013. Transcriptions of audiotapes and field notes were analyzed to identify issues of concern that might be alleviated through education and capacity-building, and areas that required ongoing discussion or additional regulatory guidance.ResultsAreas of concern included lack of understanding among patients and providers about the use of biospecimens in clinical care and research; reuse of biospecimens, particularly issues of consent, ownership and decision-making; export of specimens and loss of control over reuse and potential benefits; and felt need for regulatory guidance and IRB-member training. Local belief systems about bodily integrity and strong national identity in the construct of benefits may be at odds with initiatives that involve foreign biorepositories or consider such collections to be global public goods.ConclusionEducation is needed to strengthen IRB-member capacity to review and monitor protocols calling for the collection and use of biospecimens, guided by clear national policy on priority-setting, partnerships, review, and oversight. Engagement with local stakeholders is needed to harmonize fundamentally different ways of understanding the human body and community identity with the aims of contemporary biomedicine. (shrink)

Previous studies have shown that children retreat from argument‐structure overgeneralization errors (e.g., *Don’t giggle me) by inferring that frequently encountered verbs are unlikely to be grammatical in unattested constructions, and by making use of syntax‐semantics correspondences (e.g., verbs denoting internally caused actions such as giggling cannot normally be used causatively). The present study tested a new account based on a unitary learning mechanism that combines both of these processes. Seventy‐two participants (ages 5–6, 9–10, and adults) rated overgeneralization errors with higher (...) (*The funny man’s joke giggled Bart) and lower (*The funny man giggled Bart) degrees of direct external causation. The errors with more‐direct causation were rated as less unacceptable than those with less‐direct causation. This finding is consistent with the new account, under which children acquire—in an incremental and probabilistic fashion—the meaning of particular constructions (e.g., transitive causative = direct external causation) and particular verbs, rejecting generalizations where the incompatibility between the two is too great. (shrink)

For some people, respect is due to people of particular standing and involves formality and deference. For others, respect is based on regard and attention. This approach is essentially informal. This article explores young people's interpretations of respect and shows how an understanding of its theory and practice may enhance relationships between adults, especially those employed in the social professions, and young people. Two frameworks are employed to assist in exploring the issues involved; one is located in communication theory within (...) educational contexts (Burbules, 1993) and the other in the politics of self-definition (Wilson, 1993). The discussion draws on three pieces of empirical research involving young people and professionals. The different interpretations of respect are shown to provide a means of understanding a source of conflict between professionals with positions of authority in young people's lives and the young people themselves. (shrink)

Recently, a class of $\mathcal{P}\mathcal{T}$ -invariant scalar quantum field theories described by the non-Hermitian Lagrangian $\mathcal{L}$ = $ \frac{1}{2} $ (∂ϕ) 2 +gϕ 2 (iϕ)ε was studied. It was found that there are two regions of ε. For ε<0 the $\mathcal{P}\mathcal{T}$ -invariance of the Lagrangian is spontaneously broken, and as a consequence, all but the lowest-lying energy levels are complex. For ε≥0 the $\mathcal{P}\mathcal{T}$ -invariance of the Lagrangian is unbroken, and the entire energy spectrum is real and positive. The subtle (...) transition at ε=0 is not well understood. In this paper we initiate an investigation of this transition by carrying out a detailed numerical study of the effective potential V eff (ϕc) in zero-dimensional spacetime. Although this numerical work reveals some differences between the ε<0 and the ε>0 regimes, we cannot yet see convincing evidence of the transition at ε=0 in the structure of the effective potential for $\mathcal{P}\mathcal{T}$ -symmetric quantum field theories. (shrink)

Early versions of satellite and radiosonde datasets suggested that the tropical surface had warmed more than the troposphere, while climate models consistently showed tropospheric amplification of surface warming in response to human-caused increases in greenhouse gases. We revisit such comparisons here using new observational estimates of surface and tropospheric temperature changes. We find that there is no longer a serious discrepancy between modeled and observed trends in the tropics. Our results contradict a recent claim that all simulated temperature trends in (...) the tropical troposphere are inconsistent with observations. This claim was based on the use of older radiosonde and satellite datasets and on two methodological errors: the neglect of observational trend uncertainties introduced by interannual climate variability and application of an inappropriate statistical “consistency test”.This emerging reconciliation of models and observations has two primary explanations. First, because of changes in the treatment of buoy and satellite information, new surface temperature datasets yield slightly reduced tropical warming relative to earlier versions. Second, recently developed satellite and radiosonde datasets now show larger warming of the tropical lower troposphere. In the case of a new satellite dataset from remote sensing systems, enhancedRSS warming is due to an improved procedure of adjusting for inter-satellite biases. When the RSS-derived tropospheric temperature trend is compared with four different observed estimates of surface temperature change, the surface warming is invariably amplified in the tropical troposphere, consistent with model results. Even if we use data from a second satellite dataset with smaller tropospheric warming than in remote sensing systems RSS, observed tropical lapse rates are not significantly different from those in all model simulations.Our results contradict a recent claim that all simulated temperature trends in the tropical troposphere and in tropical lapse rates are inconsistent with observations. This claim was based on the use of older radiosonde and satellite datasets and on two methodological errors: the neglect of observational trend uncertainties introduced by interannual climate variability and application of an inappropriate statistical “consistency test”. (shrink)

Recognising and responding appropriately to emotions is critical to adaptive psychological functioning. Psychopathic traits (e.g. callous, manipulative, impulsive, antisocial) are related to differences in recognition and response when emotion is conveyed through facial expressions and language. Use of emotional music stimuli represents a promising approach to improve our understanding of the specific emotion processing difficulties underlying psychopathic traits because it decouples recognition of emotion from cues directly conveyed by other people (e.g. facial signals). In Experiment 1, participants listened to clips (...) of emotional music and identified the emotional content (Sample 1, N = 196) or reported on their feelings elicited by the music (Sample 2, N = 197). Participants accurately recognised (t(195) = 32.78, p <.001, d = 4.69) and reported feelings consistent with (t(196) = 7.84, p <.001, d = 1.12) the emotion conveyed in the music. However, psychopathic traits were associated with reduced emotion recognition accuracy (F(1, 191) = 19.39, p <.001) and reduced likelihood of feeling the emotion (F(1, 193) = 35.45, p <.001), particularly for fearful music. In Experiment 2, we replicated findings for broad difficulties with emotion recognition (Sample 3, N = 179) and emotional resonance (Sample 4, N = 199) associated with psychopathic traits. Results offer new insight into emotion recognition and response difficulties that are associated with psychopathic traits. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS The Logic of God Incarnate. By THOMAS V. MORRIS. Ithaca: Cornell University Press, 1986. Pp. 220. $19.95. Thomas V. Morris, Assistant Professor of Philosophy at the University of Notre Dame, has written a technical yet provocative study on the Incarnation. As a faithful Christian he believes in and desires to defend the traditional Christian doctrine of the Incarnation proclaimed in the New Testament and defined by the (...) early councils of the Church, especially Chalcedon, that is, that Jesus is the One eternal Son existing in two natures. He also holds that, while the truth of the Incarnation is revealed, it must nonetheless stand the test of logic and reason. The Incarnation cannot be illogicaJ or meaningless. " If the church has been guided by God in such matters as the formulation of its creeds, conciliar decrees, and catechisms,.... we would not expect glaring logical flaws in its central doctrinal affirmations" (p. 46). The stated purpose of Morris's study is to defend the traditional doctrine against those who would hold it to be logically incoherent and meaningless. "In the course of thinking about the Incarnation for some years now, I have come to see that a few simple metaphysical distinctions and a solid dose of logical care will suffice to explicate and defend the doctrine against all extant criticisms of a philosophical nature" (p. 9). Morris meticulously analyzes and critiques a number of arguments that oppose the possibility of coherence of the Incarnation by attempting to demonstrate that such arguments are.either false and illogical themselves, or that they do not apply to a true understanding of the Incarnation. Moreover, Morris proposes a novel understanding of the Incarnation which he believes is both logical and intelligible, and which conforms to the Christian tradition. This goal of upholding the intelligibility of the Incarnate leads Morris to a three-fold task. He first of all must refute his chief adversaries, those who would deny the sensibleness of saying God became man in Jesus. Such critics deny the validity of the Incarnation on the ground..'! that it is meaning·less, and the'l'efore impossible to juxtapose the incommensurable. attributes of divinity and humanity, e.g., perfection/imperfection, immutability/corruptibility. They hold that Jesus could not have had both these sets of properties at once (cf. p. 20). Morris refuses to capitulate to such arguments. He nevertheless insists that any solution to the issue which would undermine human logic or which would fail to uphold the Christian's belief is no solution at all (cf. p. 32). 367 368 BOOK REVIEWS Secondly, Morris's task leads him to refute any attempts at a " OneNature " solution, which would "squash" together the human and divine natures in Jesus to form a single nature. Such proposals jeopardize either the integrity of Jesus's divinity (Arianism) or his humanity (Docetism, Monophysitism), inevitably composing a mythical tertium quid (cf. pp. 33-38). Morris presents a clear case against such corruptions of the Incarnation. Thirdly, Morris's task brings him to analyze contemporary kenotic Christology. He thoroughly discusses this approach, for the reason that it is directly involved in the issue at hand, namely, the incompatibility between divine and human properties in Christ. Secondarily, however, Morris's interest in kenoticism reflects his own hope that some variation of the approach might posibly arrive at a Christological solution (cf. p. 92). While he ultimately rejects kenoticism, Morris flirts with the various alternatives, and, as we shall see, his own perception of the Incarnation remains tinged with a kenotic flavor. How then is it possible to predicate of one and the same individual divine and human attributes intelligibly and coherentlyT To use contemporary computer jargon, the question might be phrased: is it possible that God and man can he "incarnation-friendly¥" Morris believes so. Morris first of all sets out to define the terms-divine nature and human nature. He believes part of the incompatibility problem lies in attributing to Jesus's humanity unnecessarily hostile aspects. He distinguishes between being "merely human" and being "fully human"· To be " merely human " is to possess not only those properties that narrowly define one's nature or kind, such as rationality, but... (shrink)

ABSTRACT To date, the American Psychological Association Ethical Standards and Code of Conduct does not include direct guidance about how psychologists should navigate social media. Given the variety of roles psychologists can choose to engage on social media, it is imperative that guidelines are established. These guidelines should consider the multidimensionality that exists as psychologists may choose to present on social media through a personal presence, a business presence, and/or even an influencer/content creator presence. Specific ethical considerations and recommendations are (...) provided. (shrink)

Book reviewed in this article: Beginning Lives, by Rosalind Hursthouse. On Moral Medicine:Theological Perspectives in Medical Ethics, edited by Stephen E. Lammers and Allen Verhey. Quantitative Risk Assessment, edited by James M. Humber and Robert F. A Theory of Value and Obligation, by Robin Attfield. Ethical Issues at the Outset of Life, edited by William B. Weil Jr. and Martin Benjamin. Legal Frontiers of Death and Dying by Norman L. Cantor Having Your Baby By Donor Insemination:A Complete Resource Guide, by (...) Elizabeth Noble. (shrink)

The Royal Society possesses three long-focus simple lenses of diameters 195, 210 and 230 mm, all inscribed with the signature ‘C. Huygens’ and various dates in the year 1686. These prove to have been made by Constantine Huygens, the elder brother of the famous Christiaan Huygens. All three lenses have been examined by a variety of physical and chemical methods, both to define their optical characteristics and to establish the composition of dated samples of late-seventeenth-century Continental glass. The focal lengths (...) of 37·9, 50·1 and 65·2 metres found by combination agree with Huygens' own values of 122, 170 and 210 feet respectively, and are so great that practical employment of the lenses in aerial telescopes has rarely been achieved. All are made from the same very poor glass—a heterogeneous and discoloured potash-rich ‘forest glass’—with a refractive index of 1·516, a costringence of 60, and a density of 2·5 g cm−3. The three lenses were ground with just two concave laps, of radii of curvature 27·11 and 71·15 metres, one lens being plano-convex to a high degree of accuracy. A claim by previous investigators that one lens was a ‘light flint’ glass has been disproved. (shrink)

Signals to the brain from the flows of energy around the body, varied primarily by declining amounts of food energy in the stomach, can explain the pattern of meals in the laboratory rat, the differences between dark and light phases, and the development of obesity ion the rat wioth VMH lesions but normal sating.