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With limited phosphorus (P) supplies, increasing P demand, and issues with P runoff and pollution, developing an ability to reuse the large amounts of residual P stored in agricultural soils is increasingly important. In this study, we investigated the potential for residual soil P to maintain crop yields while reducing P applications and losses in Canada. Using a P cycling model coupled with a soil P dynamics model, we analyzed soil P dynamics over 110 years across Canada's provinces. We found that using soil residual P may reduce mineral P demand as large as 132 Gg P year−1 (29%) in Canada, with the highest potential for reducing P applications in the Atlantic provinces, Quebec, Ontario, and British Columbia. Using residual soil P would result in a 21% increase in Canada's cropland P use efficiency. We expected that the Atlantic provinces and Quebec would have the greatest runoff P loss reduction with use of residual soil P, with the average P loss rate decreasing from 4.24 and 1.69 kg ha−1 to 3.45 and 1.38 kg ha−1, respectively. Ontario, Manitoba, and British Columbia would experience relatively lower reductions in P loss through use of residual soil P, with the average runoff P loss rate decreasing from 0.44, 0.36, and 4.33 kg ha−1 to 0.19, 0.26, and 4.14 kg ha−1, respectively. Our study highlights the importance of considering residual soil P as a valuable resource and its potential for reducing P pollution. [ABSTRACT FROM AUTHOR]

This study presents typical values of electrical resistivity for common saturated and unsaturated sediments in Québec in the form of a resistivity chart. The database for this study consists of surface geophysical investigations [i.e., transient electromagnetic (TEM) surveys] together with stratigraphic and hydrogeological data from boreholes drilled among five regions of the Province of Québec in Canada: Mauricie, Abitibi-Témiscamingue, Saguenay-Lac-Saint-Jean, Charlevoix and Haute-Côte-Nord. TEM stations were selected near the sites where boreholes, stratigraphic cross-sections and piezometric surveys were acquired to derive an empirical and local petrophysical relationship and establish a resistivity chart of the sediments. This chart proposes ranges of resistivity applying to fourteen classes of common sediments, seven of which have never been included in previous studies: silty clay, clay with sand/gravel/pebbles, unsaturated clayey silt with sand, saturated and unsaturated silty sand and saturated and unsaturated clayey sand and gravel. A standardization method was developed and used in this study to produce an accurate and representative chart, and to eliminate outliers that might distort the results and reduce their relevance. This method was designed with the aim of mitigating the impact of outliers and ensuring a reliable and consistent dataset. The findings from this study may provide scientists and practitioners with precise electrical resistivity characteristics of typical saturated and unsaturated sediments, enabling a more accurate assessment of groundwater resources. [ABSTRACT FROM AUTHOR]

Objective: In 2018, the sale of non-medical cannabis was authorized in the province of Quebec in Canada, within a public monopoly under the Société Québécoise du Cannabis (SQDC). The objective of this study was to offer a description of the cannabis-using population regarding the sources of cannabis supply and to explore whether at-risk individuals are purchasing cannabis at SQDC. Method: We used data from a cross-sectional, representative population survey (age >18 years, n = 1799), the Enquête Québécoise sur le Cannabis, which was completed between February and June 2019. Analyses involved adjusted binary logistic regressions, incorporating population weights, to assess 7 potential indicators of harm. Results: The vulnerability profiles of SQDC consumers (47.8%) and those acquiring their cannabis elsewhere (52.2%) were similar in terms of frequency of cannabis use (adjusted odds ratio [aOR] = 0.46; 95% confidence interval [CI] = 0.12-1.67), motivation to use (aOR = 0.62; 95% CI = 0.16-2.46), concomitant consumption of other substances (aOR = 0.80; 95% CI = 0.14-4.75), cannabis-impaired driving behaviours (aOR = 0.93; 95% CI = 0.26-3.36), psychological distress (aOR = 0.99; 95% CI = 0.26-3.79), and problematic cannabis use (aOR = 0.46; 95% CI = 0.13-1.64). However, SQDC consumers were more likely to be aware of the cannabinoid content of the product purchased compared to those who acquired their cannabis from other sources (aOR = 4.12; 95% CI = 1.10-15.40). Conclusions: No association was detected between the source of cannabis supply and potential vulnerability indicators of cannabis-related harms, but SQDC consumers were more aware of the cannabinoid content of the products purchased. These results suggest that the regulated government supply in Quebec is reaching a substantial portion of those with potential high vulnerability to harm. Whether this knowledge translates into a reduction in the negative consequences related to consumption is still to be determined. [ABSTRACT FROM AUTHOR]

It is well known that many consumers believe local foods are more expensive than comparative products coming from other markets. The aim of this study was to measure the price competitiveness of products certified by the Aliments du Québec program, a well-known program in the Canadian province of Quebec. Using machine-learning, artificial intelligence and targeted data mining, the report identifies local products and comparator products, to consider whether locally certified products are more expensive than comparative products coming from outside Quebec. Uncertified products used as comparative products come from anywhere around the world, outside of the province of Quebec. For this study, a total of more than 350,000 discrete price data points were analyzed in the Winter 2022. Local product prices were examined relative to the prices of comparator products. In total, there were 48 subcategories considered. In 70.83% of the subcategories, the local product was either as expensive (similar price) or less expensive than the comparator product. Results challenge the popular belief that local food products are often more expensive. This study also provides limitation and future research paths. [ABSTRACT FROM AUTHOR]

Introduction: Inadequate pregnancy monitoring for pregnant migrant women without medical insurance (PMWMI) exposes them to severe complications during childbirth and consequences for the health of their child (e.g. preterm delivery, low birth weight, etc.). This scoping review aims to identify existing interventions globally to improve access to perinatal care for PMWMI. It will also highlight the strengths, weaknesses as well as the costs of these interventions. Materials and methods: The methodological framework developed by Arksey & O'Malley (2005) will be used. An electronic search of studies from 2000 to 2021, published in French or English, will be conducted in 12 databases. Publication in Websites of non-governmental organizations working on migrant women without medical insurance issues will be also searched. All articles related to perinatal follow-up and care of PMWMIs, regardless of design, will be included. Editorial comments will be excluded. Outcomes of interest will focus on the impacts, strengths, weaknesses, and cost of interventions. Selection of articles and data extraction will be done by two independent researchers following the Tricco et al. (2018) reporting guide. Finally, a deliberative workshop with experts will allow to identify the most promising and appropriate interventions that can facilitate access to perinatal services by PMWMIs in the Quebec province of Canada. [ABSTRACT FROM AUTHOR]

Routing regular and dangerous commodities in railway freights transportation is discussed in this paper. Based on a link-based modeling approach, a mixed integer nonlinear programing model is developed. The model takes into account weather stability conditions of urban and rural areas and spatial distribution of risk at yards and around links as it impacts these zones along the routes. This paper also discusses the advantages of using bifurcation of flows on risk-cost tradeoffs and route planning decisions. The widely used nonlinear risk function is linearized and then the problem was solved to optimality using a commercial software. Results of the experiments on two hypothetical networks and one based on the rail network of the Province of Québec in Canada are presented and analyzed. Routing decisions associated with both variants of the proposed model with bifurcation of the material flows are compared to obtain managerial insights on the model in solving hazmat freight routing problems. [ABSTRACT FROM AUTHOR]

Objective: Retail availability of cannabis has the potential to influence demand for both legal and illegal cannabis. The aims of the study were to: 1) estimate the percentage of consumers who report purchasing dried flower legally; and 2) examine the association between purchasing dried flower legally and retail availability, where retail availability was represented as: a) Canadian province; b) 'objective' retail proximity; and c) self-reported retail proximity.Methods: Data come from Canadian respondents in Wave 2 of the International Cannabis Policy Study (ICPS) conducted one year after non-medical cannabis legalization in September-October 2019. Respondents were 18+ years in Alberta/Quebec and 19+ years elsewhere and had purchased any dried flower in the past year (n = 2506). Respondents were recruited through commercial online panels. Weighted binary logistic regression models examined likelihood of purchasing dried flower legally.Results: Overall, 47.7 % of past-year dried flower purchasers reported last purchasing dried flower legally, with variation across provinces (range = 40.5 %-81.2 %). Likelihood of purchasing dried flower legally was greater among those who lived closer to a legal retail store based on Euclidean distance (<3 km vs. > 10 km: AOR = 1.56, 95 % CI: 1.20,2.02), and who had shorter self-reported travel time to a retail store (<5 min. vs. > 15 min.: AOR = 2.24, 95 % CI: 1.56,3.21).Conclusion: One year after legalization, retail availability was associated with last purchasing dried flower legally among past-year dried flower purchasers. To our knowledge, the current study is among the first to examine the legality of purchase source used for dried flower and retail availability of cannabis in Canada post-legalization. [ABSTRACT FROM AUTHOR]