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- Another turn for p53Tyson, John J. (Nature Publishing Group, 2006-01-01)
- A Bistable Switch Mechanism for Stem Cell Domain Nucleation in the Shoot Apical MeristemBattogtokh, D.; Tyson, John J. (Frontiers, 2016-05-23)
- Community recommendations on terminology and procedures used in flooding and low oxygen stress researchSasidharan, Rashmi; Bailey-Serres, Julia; Ashikari, Motoyuki; Atwell, Brian J.; Colmer, Timothy D.; Fagerstedt, Kurt; Fukao, Takeshi; Geigenberger, Peter; Hebelstrup, Kim H.; Hill, Robert D.; Holdsworth, Michael J.; Ismail, Abdelbagi M.; Licausi, Francesco; Mustroph, Angelika; Nakazono, Mikio; Pedersen, Ole; Perata, Pierdomenico; Sauter, Margret; Shih, Ming-Che; Sorrell, Brian K.; Striker, Gustavo G.; van Dongen, Joost T.; Whelan, James; Xiao, Shi; Visser, Eric J. W.; Voesenek, Laurentius A. C. J. (Wiley, 2017-06-01)Apart from playing a key role in important biochemical reactions, molecular oxygen (O2) and its by-products also have crucial signaling roles in shaping plant developmental programs and environmental responses. Even under normal conditions, sharp O2 gradients can occur within the plant when cellular O2 demand exceeds supply, especially in dense organs such as tubers, seeds and fruits. Spatial and temporal variations in O2 concentrations are important cues for plants to modulate development (van Dongen & Licausi, 2015; Considine et al., 2016). Environmental conditions can also expand the low O2 regions within the plant. For example, excessive rainfall can lead to partial or complete plant submergence resulting in O2 deficiency in the root or the entire plant (Voesenek & Bailey-Serres, 2015). Climate change associated increases in precipitation events have made flooding a major abiotic stress threatening crop production and food sustainability. This increased flooding and associated crop losses highlight the urgency of understanding plant flooding responses and tolerance mechanisms.
- Dynamic interfaces in an organic thin film.Tao, C.; Liu, Q.; Riddick, B. C.; Cullen, W. G.; Reutt-Robey, J.; Weeks, J. D.; Williams, E. D. (2008-10-28)Low-dimensional boundaries between phases and domains in organic thin films are important in charge transport and recombination. Here, fluctuations of interfacial boundaries in an organic thin film, acridine-9-carboxylic acid on Ag(111), have been visualized in real time and measured quantitatively using scanning tunneling microscopy. The boundaries fluctuate via molecular exchange with exchange time constants of 10-30 ms at room temperature, with length-mode fluctuations that should yield characteristic f(-1/2) signatures for frequencies less than approximately 100 Hz. Although acridine-9-carboxylic acid has highly anisotropic intermolecular interactions, it forms islands that are compact in shape with crystallographically distinct boundaries that have essentially identical thermodynamic and kinetic properties. The physical basis of the modified symmetry is shown to arise from significantly different substrate interactions induced by alternating orientations of successive molecules in the condensed phase. Incorporating this additional set of interactions in a lattice-gas model leads to effective multicomponent behavior, as in the Blume-Emery-Griffiths model, and can straightforwardly reproduce the experimentally observed isotropic behavior. The general multicomponent description allows the domain shapes and boundary fluctuations to be tuned from isotropic to highly anisotropic in terms of the balance between intermolecular interactions and molecule-substrate interactions.
- Editorial: Antibiotic Resistance in Aquatic SystemsSuzuki, Shin; Pruden, Amy; Virta, M.; Zhang, T. (Frontiers, 2017-01-25)
- Energy Consumption by Recirculation: A Missing Parameter When Evaluating Forward OsmosisZou, Shiqiang; Yuan, Heyang; Childress, Amy; He, Zhen (American Chemical Society, 2016-07-05)
- Introduction to special issue on women in civil engineeringLayne, Margaret E. (ASCE, 2010)In 1929, civil engineer Elsie Eaves, the first female full member, senior member, and honorary member of the American Society of Civil Engineers, wrote a chapter on civil engineering for a book titled An Outline of Careers for Women: A Practical Guide to Achievement. In it she asserted, “There is no sex to engineering, but there are customs, habits, and organizations of long standing which are an initial handicap to women and require more than average ability if she is to succeed in overcoming these barriers.” (Eaves 1929)
- Plant-made biologics.Chen, Q.; Santi, L.; Zhang, C. (2014)
- Reply to comment by Porporato and Calabrese on "Storage selection functions: A coherent framework for quantifying how catchments store and release water and solutes''Rinaldo, Andrea; Benettin, Paolo; Harman, C. J.; Hrachowitz, M.; McGuire, Kevin J.; van der Velde, Y.; Bertuzzo, E.; Botter, Gianluca (American Geophysical Union, 2016-01-01)
- Rethinking health systems strengthening: key systems thinking tools and strategies for transformational changeSwanson, R. Chad; Cattaneo, Aadriano; Bradley, Elizabeth; Chunharas, Somsak; Atun, Rifat; Abbas, Kaja M.; Katsaliaki, Korina; Mustafee, Navonil; Mason Meier, Benjamin; Best, Allan (Oxford University Press, 2012-10-01)While reaching consensus on future plans to address current global health challenges is far from easy, there is broad agreement that reductionist approaches that suggest a limited set of targeted interventions to improve health around the world are inadequate. We argue that a comprehensive systems perspective should guide health practice, education, research and policy. We propose key ‘systems thinking’ tools and strategies that have the potential for transformational change in health systems. Three overarching themes span these tools and strategies: collaboration across disciplines, sectors and organizations; ongoing, iterative learning; and transformational leadership. The proposed tools and strategies in this paper can be applied, in varying degrees, to every organization within health systems, from families and communities to national ministries of health. While our categorization is necessarily incomplete, this initial effort will provide a valuable contribution to the health systems strengthening debate, as the need for a more systemic, rigorous perspective in health has never been greater.
- Storage selection functions: A coherent framework for quantifying how catchments store and release water and solutesRinaldo, Andrea; Benettin, Paolo; Harman, C. J.; Hrachowitz, M.; McGuire, Kevin J.; van der Velde, Y.; Bertuzzo, E.; Botter, Gianluca (American Geophysical Union, 2015-06-01)