How Do We Come to Know? Exploring Maple Syrup Production and Climate Change in Near North Ontario

This paper reports on a pilot project exploring the impacts of climate change on maple syrup production in understudied near north, Ontario spaces. Maple syrup is produced by settler, Métis and First Nations communities for commercial distribution and as part of a mixed subsistence economy. The focus on maple syrup is opportune, since syrup production and sugar maple trees (Acer saccharum) are extremely susceptible to climate change and the biophysical and social impacts of climate change on maple syrup production in the near north of Ontario have yet to be understood. Given that the process of developing research is under-reported and that this project has had the opportunity to undertake a funded development process, this paper describes and assesses our process of ‘coming to know’, which has been guided by the following objectives: 1) to undertake an exploratory investigation of the nature of available data about long-term syrup production and climate change in both settler and Indigenous communities, 2) to include and valorize marginalized Indigenous voices and ecologies, 3) to focus on collecting climate change data from understudied near north spaces, 4) to assess the availability and quality of ecological and quantitative data in order to enhance locally-relevant understandings of climate change, and 5) to work towards the development of a cross-cultural and transdisciplinary methodological framework within which to accomplish the first four objectives. We approach these objectives across disciplinary boundaries and cultural perspectives, and with growing relationships with community partners. We describe the rich sources of information found through the pilot study and discuss highlights of our on-going process of developing our research project

Granulométrie, porosité et spectre poral de sols développés sur formations détritiques : cas des terrasses alluviales de la Saône

Cette étude, conduite à partir de cinq profils de sols développés sur les terrasses fluviatiles de la Saône, met en évidence les relations existant entre les caractéristiques granulométriques des matériaux et celles de leur système poral, de leur porosité et de leur spectre pora

A non local unitary vector model in 3-D

We present a unified analysis of single excitation vector models in 3D. We show that there is a family of first order master actions related by duality transformations which interpolate between the different models. We use a Hamiltonian (2+1) analysis to show the equivalence of the self-dual and topologically massive models with a covariant non local model which propagates also a single massive excitation. It is shown how the non local terms appears naturally in the path integral framework.Comment: 13 pages, 1 figur

Purification of three rat atrial natriuretic factors and their amino acid composition

AbstractA natriuretic factor has been described in the specific granules of rat atria. We have purified three factors which seem to be low-Mr peptides. They have been purified by means of acid extraction, octadecyl Sep-Pak cartridges, and chromatography on Bio-Gel P-10, CM Bio-Gel A, Mono S and reverse-phase high-performance liquid chromatography columns. The factors contain 26, 31 and 33 amino acids and may have been partially degraded during isolation. They are all 3 biologically active and the shorter one is the most active with a specific activity of 450000 units/mg

Primary structure of a high Mr form of rat atrial natriuretic factor

AbstractDuring the purification of rat atrial natriuretic factor (ANF), low, intermediate and high Mr forms were observed. In this report we describe the purification and amino acid sequence of a 73 residue peptide containing at its C-terminus the previously sequenced 33 amino acid ANF peptide. The cleabage necessary to produce the 33 amino acid ANF from the 73 amino acid precursor occurs at a LeuLeu bond. We also report the amino acid composition of an even longer form of ANF containing about 103 residues, in which the extension is amino terminal to the 73 peptide. A computer data bank search showed that the determined sequence is a novel one and is not homologous to any known proteins or segment thereof. The natriuretic activity of the 73 amino acid form when compared to that of a synthetic ANF peptide, comprising the sequence of the last 26 amino acids of ANF, was found to be slightly lower

Contrôle et lutte contre la fraude du patient européen

Il est des chiffres qui donnent le vertige. Incontestablement, ceux concernant les pertes dues à la fraude et la corruption en matière de soins en font partie. Certaines estimations font en effet état de 56 milliards d'euros perdus annuellement en Europe, ce qui représente près de 80 millions de perte chaque jour et plus de 5% de l'ensemble des budgets nationaux consacrés à la santé (Gee et alii, 2010)

Two-mirror Schwarzschild aplanats. Basic relations

It is shown that the theory of aplanatic two-mirror telescopes developed by Karl Schwarzschild in 1905 leads to the unified description both the prefocal and the postfocal systems. The class of surfaces in the ZEMAX optical program has been properly extended to ascertain the image quality in exact Schwarzschild aplanats. A comparison of Schwarzschild aplanats with approximate Ritchey-Chretien and Gregory-Maksutov aplanatic telescopes reveals a noticeable advantage of the former at fast focal ratio of the system.Comment: 19 page