The Biology of Morality

Abstract. The morality of human beings, defined here as our ability to determine whether our actions are right or wrong, depends not just on following rules but also on understanding the impact of our actions on another person. How we understand the impact of our actions on another person depends on our state of consciousness, which is mediated by our brain and nervous system. We describe how we understand our morality to flow naturally from the biological state we are living in and how we see our biology and our morality as mutually interactive. A change in one changes the other. Another way of saying this is that changing either our morality or our biology changes both—changes who we are and what we do.     

Highly fluorescent silver nanofluids with ferroelectric molecules

Highly fluorescent silver nanoparticles (Ag-NPs), soluble in a ferroelectric host of polymer molecules such as poly(vinylidene fluoride) (PVF₂), have been created in the form of nanofluids. The content of Ag-NPs (flocculates) is varied in steps 0.1–0.2 wt% up to a value of 5.0 wt% in tailoring a broad green emission band over 520–620 nm out of a hybrid percolation Ag–PVF₂ composite. A maximum intensity arises in this band at as small a percolation threshold as ～0.1 wt% Ag-NPs. It contains three distinct bands of peak values 541, 565, and 582 nm in an Ag-NPs tunable response of the localized surface plasmons. The emission-dependent anti-Stokes excitation spectrum contains a similar group of three bands 348, 401, and 421 nm. For Ag-contents above 0.1 wt%, interdependent intensities in the emission and excitation bands drop rapidly by as much as five times, conferring a metal–polymer percolation network. The results open wide applications for biological labels and light emitters using such nanofluids.     

睡眠拖延行为背后的心理生理机制解析

摘 要 睡眠拖延行为是健康行为拖延领域提出的一个新概念,其可概括为在没有外部原因阻碍的情况下,仍无法在预定时间上床睡觉的现象。目前的研究认为睡眠拖延行为是导致普通人群睡眠不足的重要原因,睡前日常活动及沉浸式活动常常诱导其发生,探讨其背后机制主要涉及自我调节和生物节律两大因素。利用时限性自我调节理论可尝试解析睡眠拖延行为的发生过程。未来研究可从其神经机制探讨及预防和干预措施等方面尝试展开。     

Patenting humans: Clones,chimeras, and biological artifacts

The momentum of advances in biology is evident in the history of patents on life forms. As we proceed forward with greater understanding and technological control of developmental biology there will be many new and challenging dilemmas related to patenting of human parts and partial trajectories of human development. These dilemmas are already evident in the current conflict over the moral status of the early human embryo. In this essay, recent evidence from embryological studies is considered and the unbroken continuity of organismal development initiated at fertilization is asserted as clear and reasonable grounds for moral standing. Within this frame of analysis, it is proposed that through a technique of Altered Nuclear Transfer, non-organismal entities might be created from which embryonic stem cells could be morally procured. Criteria for patenting of such non-organismal entities are considered. An earlier version of this paper was presented at an international conference, “The Ethics of Intellectual Property Rights and Patents,” held in Warsaw, Poland on 23–24 April, 2004.     

学前儿童用“人为不介入原理”区分生物、非生物能力的发展

本研究采用访谈法,考查4～6岁儿童对生物的“人为不介入原理”的理解。研究结果表明：1．学前儿童没有表现出明显的“泛灵论”倾向。2．学前儿童对“人为不介入原理”的理解随年龄增长而呈现提高趋势,多数6岁儿童已经能够利用这一原理区分生物和非生物。3．学前儿童对不同领域刺激物的认知表现出不平衡性,对动物的认知优先发展,植物次之,对人造物认知的发展落后于对生物认知的发展。4．学前儿童表现出初步的分类概念。