Recent estimates suggest that the number of people seeking mental health treatment has increased significantly in the past 20 years (Kessler et al., 2005; Lipson et al., 2019; Mojtabai, 2005). Many...

This book examines the origins and subsequent evolution of multicellularity. The transition from unicellular to multicellular life was one of a few major events in the history of life that created new opportunities for more complex biological systems to evolve.

In 1851 J. B. L. Foucault provided the first mechanical demonstration of the earth's diurnal rotation with a vibrating pendulum. He performed the experiment in the Pantheon in Paris, sparking a pendulum mania that raged across Europe and the United States. The interest in the Foucault pendulum provides an opportunity to examine the popularization of physical science in the antebellum United States. Laypersons attended public demonstrations, performed their own demonstrations, and disputed the principles of the Foucault pendulum. Their participation in (...) physical science made them part of the American scientific community. These lay scientists performed most of the public demonstrations of the experiment. Some researchers performed public demonstrations, but others avoided this opportunity to popularize, deeming it unseemly to participate in pendulum mania. The geographical distribution of interest in the experiment challenges assertions made by historians about the relative level of scientific activity in the New England, mid-Atlantic, southern, and western regions of the United States. (shrink)

© The Author 2016. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved.Cell walls of grasses, including cereal crops and biofuel grasses, comprise the majority of plant biomass and intimately influence plant growth, development and physiology. However, the functions of many cell wall synthesis genes, and the relationships among and the functions of cell wall components remain obscure. To better understand the patterns of cell wall accumulation and identify genes that act in grass (...) cell wall biosynthesis, we characterized 30 samples from aerial organs of rice at 10 developmental time points, 3-100 d post-germination. Within these samples, we measured 15 cell wall chemical components, enzymatic digestibility and 18 cell wall polysaccharide epitopes/ligands. We also used quantitative reverse transcription-PCR to measure expression of 50 glycosyltransferases, 15 acyltransferases and eight phenylpropanoid genes, many of which had previously been identified as being highly expressed in rice. Most cell wall components vary significantly during development, and correlations among them support current understanding of cell walls. We identified 92 significant correlations between cell wall components and gene expression and establish nine strong hypotheses for genes that synthesize xylans, mixed linkage glucan and pectin components. This work provides an extensive analysis of cell wall composition throughout rice development, identifies genes likely to synthesize grass cell walls, and provides a framework for development of genetically improved grasses for use in lignocellulosic biofuel production and agriculture. (shrink)