Échantillonnage des jeunes poissons de l'année, pour l'étude des substances toxiques dans le fleuve Saint-Laurent (tronçon fluvial) et les embouchures des rivières Yamaska et Saint-François PDF Download

Author: Gilles Guay
Publisher:
ISBN:
Category :
Languages : fr
Pages : 13

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Book Description
L'utilisation des jeunes poissons de l'année a été intégrée dans le réseau de surveillance de la qualité d'eau. Le Queue à tâche noire et la Perchaude se sont avérés de bons bioindicateurs de certaines substances toxiques et répondent à l'objectif de préciser la contamination spatiale et temporelle. On présente dans ce rapport les résultats d'échantillonnage des ménés qui a été réalisé dans le fleuve Saint-Laurent et les embouchures des rivières Yamaska et Saint-François.

Author: Harm. H. Sloterdijk
Publisher:
ISBN:
Category : Indicateurs biologiques
Languages : fr
Pages : 29

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Book Description
L'utilisation de jeunes poissons de l'année (âge 0+), une alternative à l'emploi de poissons adultes en tant que bioindicateurs des contaminants, a été évaluée dans le fleuve Saint-Laurent. Le Queue à tache noire (Notropis hudsonius) a été choisi comme espèce-cible, alors que la perchaude (Perca flavescens) a été retenue comme espèce de remplacement. On a évalué certains facteurs pouvant influencer l'utilisation de ces bioindicateurs, tels les différences de longueurs, la durée de l'échantillonnage, les teneurs en lipides, les variations intra-stations et la régio-spécificité. Les contaminants étudiés ont été le Hg, Cd, Pb, Cu, Zn, Cr, Ni, PCB, HCB, aldrine, mirex et heptachlore. En conclusion, l'utilisation de jeunes poissons de l'année fournit de l'information rapide et fiable sur la contamination par des polluants persistants et leur intégration dans un réseau de suivi est hautement recommandée.

Author:
Publisher:
ISBN:
Category : Eau
Languages : fr
Pages : 132

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Author: Comité interministériel sur la contamination des poissons (Québec)
Publisher: Sainte-Foy : Ministère de l'environnement , Direction de la qualité du milieu aquatique
ISBN:
Category :
Languages : fr
Pages : 80

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Author: Atlantic Geoscience Society
Publisher: Nimbus Publishing (CN)
ISBN:
Category : History
Languages : en
Pages : 220

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This book is about the history of the rocks and fossils of the Maritime Provinces of Canada (New Brunswick, Nova Scotia and PEI) over the last billion years. The book is beautifully illustrated in full colour, with original paintings of ancient vistas, over 150 photographs, and crisp explanatory diagrams and sketches.

Author: Doreen Dodgen-Magee
Publisher: Rowman & Littlefield Publishers
ISBN: 9781538115848
Category : Technological innovations
Languages : en
Pages : 0

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Book Description
Americans engage with screens for more than ten hours a day, changing our brains, our relationships, and our personal lives. Here, Dodgen-Magee illuminates the effects of device overuse, and offers wisdom gleaned from personal stories, research, and anecdotes from youth, paren...

Author: Victoria L. Dunckley, MD
Publisher: New World Library
ISBN: 1608682854
Category : Family & Relationships
Languages : en
Pages : 386

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Book Description
Increasing numbers of parents grapple with children who are acting out without obvious reason. Revved up and irritable, many of these children are diagnosed with ADHD, bipolar illness, autism, or other disorders but don’t respond well to treatment. They are then medicated, often with poor results and unwanted side effects. Based on emerging scientific research and extensive clinical experience, integrative child psychiatrist Dr. Victoria Dunckley has pioneered a four-week program to treat the frequent underlying cause, Electronic Screen Syndrome (ESS). Dr. Dunckley has found that everyday use of interactive screen devices — such as computers, video games, smartphones, and tablets — can easily overstimulate a child’s nervous system, triggering a variety of stubborn symptoms. In contrast, she’s discovered that a strict, extended electronic fast single-handedly improves mood, focus, sleep, and behavior, regardless of the child’s diagnosis. It also reduces the need for medication and renders other treatments more effective. Offered now in this book, this simple intervention can produce a life-changing shift in brain function and help your child get back on track — all without cost or medication. While no one in today’s connected world can completely shun electronic stimuli, Dr. Dunckley provides hope for parents who feel that their child has been misdiagnosed or inappropriately medicated, by presenting an alternative explanation for their child’s difficulties and a concrete plan for treating them.

Author: Martin Gurri
Publisher: Stripe Press
ISBN: 1953953344
Category : Political Science
Languages : en
Pages : 465

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Book Description
How insurgencies—enabled by digital devices and a vast information sphere—have mobilized millions of ordinary people around the world. In the words of economist and scholar Arnold Kling, Martin Gurri saw it coming. Technology has categorically reversed the information balance of power between the public and the elites who manage the great hierarchical institutions of the industrial age: government, political parties, the media. The Revolt of the Public tells the story of how insurgencies, enabled by digital devices and a vast information sphere, have mobilized millions of ordinary people around the world. Originally published in 2014, The Revolt of the Public is now available in an updated edition, which includes an extensive analysis of Donald Trump’s improbable rise to the presidency and the electoral triumphs of Brexit. The book concludes with a speculative look forward, pondering whether the current elite class can bring about a reformation of the democratic process and whether new organizing principles, adapted to a digital world, can arise out of the present political turbulence.