The big problem of small particles : a comparison of methods for determination of particle size in nanocrystalline anatase powders

We compare different methods for particle size determination in nanocrystalline anatase (TiO2) powders: transmission electron microscopy (TEM), nitrogen adsorption measurements, mercury porosimetry, and X-ray diffraction(XRD). The main source of errors in TEM is the sampling of the powder population, whereas in XRD the deconvolution of peak broadening due to instrument, microstrains, and crystalline domain size is delicate and can lead to unreliable results. Different approaches including Scherrer and Williamson-Hall equations are discussed. The presence of mesopores due to agglomerate formation is clearly revealed in adsorption measurements and porosimetry

The Life and Death of Terry Schiavo: Scientific, Religious, Legal, and Ethical Perspectives

The decade-long controversy over the care of Theresa Marie Schindler Schiavo began as a private family matter and escalated into a national moral and political debate. Our speakers carry us to the center of this controversy, to the bedside of Terri Schiavo, to illuminate the debate surrounding her life and death from the perspectives of science, religion, law and ethics

The Life and Death of Terry Schiavo: Scientific, Religious, Legal, and Ethical Perspectives

The decade-long controversy over the care of Theresa Marie Schindler Schiavo began as a private family matter and escalated into a national moral and political debate. Our speakers carry us to the center of this controversy, to the bedside of Terri Schiavo, to illuminate the debate surrounding her life and death from the perspectives of science, religion, law and ethics

The Human Affectome

Over the last decades, the interdisciplinary field of the affective sciences has seen proliferation rather than integration of theoretical perspectives. This is due to differences in metaphysical and mechanistic assumptions about human affective phenomena (what they are and how they work) which, shaped by academic motivations and values, have determined the affective constructs and operationalizations. An assumption on the purpose of affective phenomenacan be used as a teleological principle to guide the construction of a common set of metaphysical and mechanistic assumptions—a framework for human affective research. In this capstone paper for the special issue “Towards an Integrated Understanding of the Human Affectome”, we gather the tiered purpose of human affective phenomena to synthesize assumptions that account for human affective phenomenacollectively. This teleologically-grounded framework offers a principled agenda and launchpad for both organizing existing perspectives and generating new ones. Ultimately, we hope Human Affectome brings us a step closer to not only an integrated understanding of human affective phenomena, but an integrated field for affective research