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Les courtes nuits de sommeil sont mauvaises pour le cœur

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Le chercheur José Ordovas de l’Université Tufts aux États-Unis et ses collègues espagnols ont recueilli des données auprès de 3974 participants à une étude consacrée à l’athérosclérose, une maladie coronarienne qui peut mener à l’hypertension artérielle, à l’angine de poitrine, à une crise cardiaque ou encore à un AVC.

Le saviez-vous?

On recommande chez les adultes de 18 à 64 ans de 7 à 9 heures et chez les personnes âgées de plus de 65 ans de 7 à 8 heures de sommeil par nuit.

Si d’autres recherches ont déjà montré que le manque de sommeil est fortement associé aux maladies coronariennes, celle-ci est la première étude qui montre que « le sommeil mesuré objectivement est associé de façon indépendante à l’athérosclérose dans tout le corps ».

L’athérosclérose se définit comme une accumulation de dépôts de graisses (plaque d’athérome) dans la paroi des artères qui finissent par perdre leur élasticité (durcissent) et se rétrécissent.

Cette maladie finit par ralentir le flux du sang, ce qui peut mener à l’obstruction ou à la rupture des artères, et avoir des conséquences dramatiques sur la santé d’un individu.

Les participants ont été suivis sur une période de sept jours durant lesquels les activités biologiques nocturnes ont été recensées.

Résultats en bref :

  • Les personnes qui dorment moins de six heures par nuit sont 27 % plus susceptibles de souffrir d’athérosclérose que ceux qui dorment sept à huit heures.
  • Les personnes dont la qualité du sommeil est mauvaise (réveils fréquents) sont 34 % plus susceptibles d’être atteintes d’athérosclérose que ceux qui dorment bien.

De l’importance du sommeil

Les effets négatifs du manque du sommeil sur la santé humaine sont bien documentés. Outre les maladies coronariennes, un sommeil insuffisant est également associé à :

  • l’obésité
  • le diabète de type 2
  • la dépression
  • la démence
  • l’affaiblissement du système immunitaire
  • le manque de libido
  • les sautes d’humeur
  • certains cancers

Le détail de ces travaux est publié dans le Journal of the American College of Cardiology (Nouvelle fenêtre) (en anglais).

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More groups join in support of women in STEM program at Carleton

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OTTAWA — Major companies and government partners are lending their support to Carleton University’s newly established Women in Engineering and Information Technology Program.

The list of supporters includes Mississauga-based construction company EllisDon.

The latest to announce their support for the program also include BlackBerry QNX, CIRA (Canadian Internet Registration Authority), Ericsson, Nokia, Solace, Trend Micro, the Canadian Nuclear Safety Commission, CGI, Gastops, Leonardo DRS, Lockheed Martin Canada, Amdocs and Ross.

The program is officially set to launch this September.

It is being led by Carleton’s Faculty of Engineering and Design with the goal of establishing meaningful partnerships in support of women in STEM.  

The program will host events for women students to build relationships with industry and government partners, create mentorship opportunities, as well as establish a special fund to support allies at Carleton in meeting equity, diversity and inclusion goals.

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VR tech to revolutionize commercial driver training

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Serious Labs seems to have found a way from tragedy to triumph? The Edmonton-based firm designs and manufactures virtual reality simulators to standardize training programs for operators of heavy equipment such as aerial lifts, cranes, forklifts, and commercial trucks. These simulators enable operators to acquire and practice operational skills for the job safety and efficiency in a risk-free virtual environment so they can work more safely and efficiently.

The 2018 Humboldt bus catastrophe sent shock waves across the industry. The tragedy highlighted the need for standardized commercial driver training and testing. It also contributed to the acceleration of the federal government implementing a Mandatory Entry-Level Training (MELT) program for Class 1 & 2 drivers currently being adopted across Canada. MELT is a much more rigorous standard that promotes safety and in-depth practice for new drivers.

Enter Serious Labs. By proposing to harness the power of virtual reality (VR), Serious Labs has earned considerable funding to develop a VR commercial truck driving simulator.

The Government of Alberta has awarded $1 million, and Emissions Reduction Alberta (ERA) is contributing an additional $2 million for the simulator development. Commercial deployment is estimated to begin in 2024, with the simulator to be made available across Canada and the United States, and with the Alberta Motor Transport Association (AMTA) helping to provide simulator tests to certify that driver trainees have attained the appropriate standard. West Tech Report recently took the opportunity to chat with Serious Labs CEO, Jim Colvin, about the environmental and labour benefits of VR Driver Training, as well as the unique way that Colvin went from angel investor to CEO of the company.

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Next-Gen Tech Company Pops on New Cover Detection Test

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While the world comes out of the initial stages of the pandemic, COVID-19 will be continue to be a threat for some time to come. Companies, such as Zen Graphene, are working on ways to detect the virus and its variants and are on the forefronts of technology.

Nanotechnology firm ZEN Graphene Solutions Ltd. (TSX-Venture:ZEN) (OTCPK:ZENYF), is working to develop technology to help detect the COVID-19 virus and its variants. The firm signed an exclusive agreement with McMaster University to be the global commercializing partner for a newly developed aptamer-based, SARS-CoV-2 rapid detection technology.

This patent-pending technology uses clinical samples from patients and was funded by the Canadian Institutes of Health Research. The test is considered extremely accurate, scalable, saliva-based, affordable, and provides results in under 10 minutes.

Shares were trading up over 5% to $3.07 in early afternoon trade.

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