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"Michael, Gregory"
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Nanobiotechnology approaches for engineering smart plant sensors
Nanobiotechnology has the potential to enable smart plant sensors that communicate with and actuate electronic devices for improving plant productivity, optimize and automate water and agrochemical allocation, and enable high-throughput plant chemical phenotyping. Reducing crop loss due to environmental and pathogen-related stresses, improving resource use efficiency and selecting optimal plant traits are major challenges in plant agriculture industries worldwide. New technologies are required to accurately monitor, in real time and with high spatial and temporal resolution, plant physiological and developmental responses to their microenvironment. Nanomaterials are allowing the translation of plant chemical signals into digital information that can be monitored by standoff electronic devices. Herein, we discuss the design and interfacing of smart nanobiotechnology-based sensors that report plant signalling molecules associated with health status to agricultural and phenotyping devices via optical, wireless or electrical signals. We describe how nanomaterial-mediated delivery of genetically encoded sensors can act as tools for research and development of smart plant sensors. We assess performance parameters of smart nanobiotechnology-based sensors in plants (for example, resolution, sensitivity, accuracy and durability) including in vivo optical nanosensors and wearable nanoelectronic sensors. To conclude, we present an integrated and prospective vision on how nanotechnology could enable smart plant sensors that communicate with and actuate electronic devices for monitoring and optimizing individual plant productivity and resource use.Nanotechnology can be used to create smart plant sensors that could eventually improve agricultural productivity.
Journal Article
Something of a Peasant Paradise?
Were Acadians better off than their rural counterparts in old regime France? Did they enjoy a Golden Age? To what degree did a distinct Acadian identity emerge before the wars and deportations of the mid-eighteenth century? In Something of a Peasant Paradise?, Gregory Kennedy compares Acadie in North America with a region of western France, the Loudunais, from which a number of the colonists originated. Kennedy considers the natural environment, the role of the state, the economy, the seigneury, and local governance in each place to show that similarities between the two societies have been greatly underestimated or ignored. The Acadian colonists and the people of the Loudunais were frontier peoples, with dispersed settlement patterns based on kin groups, who sought to make the best use of the land and to profit from trade opportunities. Both societies were hierarchical, demonstrated a high degree of political agency, and employed the same institutions of local governance to organize their affairs and negotiate state demands. Neither group was inherently more prosperous, egalitarian, or independent-minded than the other. Rather, the emergence of a distinct Acadian identity can be traced to the gradual adaptation of traditional methods, institutions, and ideas to their new environmental and political situations. A compelling comparative analysis based on archival evidence on both sides of the Atlantic, Something of a Peasant Paradise? Challenges the traditional historiography and demonstrates that Acadian society shared many of its characteristics with other French rural societies of the period.
eBook
Etiology and risk factors for diarrheal disease amongst rural and peri-urban populations in Cambodia, 2012–2018
Diarrheal diseases are a leading cause of mortality and morbidity, disproportionally affecting persons residing in low and middle-income countries. Accessing high-resolution surveillance data to understand community-level etiology and risk remains challenging, particularly in remote and resource limited populations. A multi-year prospective cohort study was conducted in two rural and two peri-urban villages in Cambodia from 2012 to 2018 to describe the epidemiology and etiology of acute diarrheal diseases within the population. Suspected diarrheal episodes among participants were self-reported or detected via routine weekly household visits. Fresh stool and fecal swabs were tested, and acute-illness and follow-up participant questionnaires collected. Of 5027 enrolled participants, 1450 (28.8%) reported at least one diarrheal incident. A total of 4266 individual diarrhea case events were recorded. Diarrhea incidence rate was calculated to be 281.5 persons per 1000 population per year, with an event rate of 664.3 individual diarrhea events occurring per 1000 population per year. Pathogenic Escherichia coli , Aeromonas spp ., and Plesiomonas shigelloides were the most prevalent bacterial infections identified. Hookworm and Strongyloides stercoralis were the predominant helminth species, while Blastocystis hominis and Giardia lamblia were the predominant protozoan species found. Norovirus genotype 2 was the predominant virus identified. Mixed infections of two or more pathogens were detected in 36.2% of positive cases. Risk analyses identified unemployed status increased diarrhea risk by 63% (HR = 1.63 [95% CI 1.46, 1.83]). Individuals without access to protected water sources or sanitation facilities were 59% (HR = 1.59 [95% CI 1.49, 1.69]) and 19% (HR = 1.19 [95% CI 1.12, 1.28]) greater risk of contracting diarrhea, respectively. Patient-level surveillance data captured in this long-term study has generated a unique spatiotemporal profile of diarrheal disease in Cambodia. Understanding etiologies, together with associated epidemiological and community-level risk, provides valuable public health insight to support effective planning and delivery of appropriate local population-targeted interventions.
Journal Article
Lunar and planetary cartography in Russia
\"This book is the first to document in depth the history of lunar and planetary cartography in Russia. The first map of the far side of the Moon was made with the participation of Lomonosov Moscow University (Sternberg Astronimcal Institute, MSU) in 1960. The developed mapping technologies were then used in preparing the \"Complete map of the Moon\" in 1967 as well as other maps and globes. Over the years, various maps of Mars have emerged from the special course \"Mapping of extraterrestrial objects\" in the MSU Geography Department, including the hypsometric map of Mars at a scale of 1:26,000,000, compiled by J.A. Ilykhina and published in 2004 in an edition of 5,000 copies. A more detailed version of this map has since been produced with a new hypsometric scale. In addition, maps of the northern and southern hemisphers of Mars have been compiled for the hypsometric globe of Mars. Relief maps of Venus were made in 2008, 2010, and 2011, and hypsometric maps of Phobos and Deimos at a scale of 1:60,000 were published in 2011.\" -- Back cover.
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