During the latter half of the six-year long "Panic of 1873," nitrous-oxide pioneer G.Q. Colton developed, advertised, and sold his dentifrice, "Dr Colton's Vegetable Dentonic" to supplement his dental anesthetic enterprise.
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http://dx.doi.org/10.1016/j.janh.2018.02.003 | DOI Listing |
Glob Chang Biol
January 2025
Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, People's Republic of China.
Conservation agriculture, which involves minimal soil disturbance, permanent soil cover, and crop rotation, has been widely adopted as a sustainable agricultural practice globally. However, the effects of conservation agriculture practices on soil NO emissions and crop yield vary based on geography, management methods, and the duration of implementation, which has hindered its widespread scientific application. In this study, we assessed the impacts of no-tillage (NT), both individually and in combination with other conservation agriculture principles, on soil NO emissions and crop yields worldwide, based on 1270 observations from 86 peer-reviewed articles.
View Article and Find Full Text PDFSci Total Environ
January 2025
Karlsruhe Institute of Technology, Institute for Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU), Kreuzeckbahnstrasse 19, Garmisch-Partenkirchen 82467, Germany.
Global fluvial ecosystems are important sources of greenhouse gases (CO, CH and NO) to the atmosphere, but their estimates are plagued by uncertainties due to unaccounted spatio-temporal variabilities in the fluxes. In this study, we tested the potential of modeling these variabilities using several machine learning models (ML) and three different input datasets (remotely sensed vegetation indices, in-situ water quality, and a combination of both) from 20 headwater catchments in Germany that differ in catchment land use and stream size. We also upscaled fluvial GHG fluxes for Germany using the best ML model and explored the role of catchment land use on the GHG spatial-temporal trends.
View Article and Find Full Text PDFCureus
October 2024
Department of Pediatric and Preventive Dentistry, Bharati Vidyapeeth (Deemed to Be University) Dental College and Hospital, Navi Mumbai, IND.
Horace Wells, a pioneering figure in the field of anesthesia, was born on January 21, 1815, in Hartford, Vermont. He is widely recognized for his groundbreaking discovery of the anesthetic properties of nitrous oxide, a finding that revolutionized pain management in both medical and dental procedures. Wells' contribution marked a pivotal moment in the history of surgery, transforming it from a traumatic, painful ordeal to a more humane and tolerable practice.
View Article and Find Full Text PDFSci Total Environ
December 2024
Institute of Forestry and Conservation, John H Daniels Faculty of Architecture Landscape and Design, University of Toronto, 33 Willcocks St. Toronto, ON M5S 3B3, Canada.
Sci Total Environ
December 2024
School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China. Electronic address:
The primary driver of increasing atmospheric concentrations of nitrous oxide (NO) is the use of organic and synthetic fertilizer to increase agricultural crop production. Current global estimates are based on IPCC NO emission factor (EF) calculations, although there are shortcomings as many of the NO EFs are derived from measurements during the cropping season. These neglect the fallow season, and do not adequately account for double or even triple cropping systems or legacy effects on soil NO emissions in the following year.
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