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Biomedical subjects

G Desrosiers

Publications and source records attributed to G Desrosiers.

At least 19 recordsLinked to original sources
PubMed2001

Alteration and release of aliphatic compounds by the polychaete Nereis virens (Sars) experimentally fed with hydrocarbons.

In the laboratory, marine worms were fed with a mixture of algae and several aliphatic hydrocarbons for 15 days. After ingestion by the worms, 34.9% of hydrocarbons are found in the faeces and only 3.1% accumulated in the gut. The comparison between the initial mixture and the faeces shows that the worm's digestive process lead to changes in the distribution of the n-alkane mixture. These changes are different from those only due to physical processes in the experimental conditions. In our experiment, no variation in the distribution of hydrocarbons in faeces with time and no microbial hydrocarbon biodegradation were evidenced. Our results suggest that marine worm feeding can substantially affect the fate of hydrocarbons in the sedimentary marine ecosystem by predominantly stimulating dissolution processes.

Journal Article↗
PubMed2001

[Government health activities between 1922 and 1936].

The 75th birthday of the Service provincial d'hygiène was commemorated in 1997. However we do not have a comprehensive history of this Service which succeeded the Conseil supérieur d'hygiène of the Province of Quebec (1887) and which eventually led to the institution of the Ministry of Health in 1936. Yet there have been significant changes in the field of public health in Quebec between 1921 and 1936, the period during which the Service provincial d'hygiène operated. We will show that through this organization, the Province played an essential role in establishing the first public health system and commencing the process of rnedicalization of the society. By 1919, federal intervention was added to provincial intervention through the establishment of the Federal Ministry of Health. But what was the structure of this provincial public health organization? How did it function? What resources did it have at its disposal to put in place a health and prevention policy? Although some recent studies have addressed the question of the appearance of a health policy at that time, there is still no analysis on the structure of this state sanitary agency, nor on its organization, functions, and means of actions. This study presents an example of the thesis adopted by the authors in previous works -i.e. that the historical vision of an unchanging health system in a static Quebec society before the Quiet Revolution must be rectified- it must also challenge the idea that, absent from this field, the state would not have adopted a health policy due to its own inertia or to the resistance of "liberal" forces and the opposition of the clergy.

Canada↗
PubMed1998

Participation in CME activities.

OBJECTIVE: To compare the continuing medical education (CME) activities of family physicians in the province of Quebec with more than 25 years in practice with those with less than 25 years in practice. DESIGN: Mailed questionnaire survey. SETTING: Family practices in the province of Quebec. PARTICIPANTS: All physicians (n = 722) with more than 25 years in practice (expressed as older) and a matched sample of 721 physicians with less than 25 years in practice (expressed as younger). MAIN OUTCOME MEASURES: Types of CME activities and time spent on them, participant characteristics. RESULTS: Older physicians spent more time in individual CME activities than younger ones (21 hours vs 18 hours monthly). Younger physicians, however, spent more time in group CME activities than older ones did (100 hours vs 80 hours yearly). Excluding physicians who devoted no time to CME activities, only two activities differentiated between the two groups: older physicians spent more time than their younger colleagues reading and listening to audiocassettes. CONCLUSIONS: Older physicians maintained their clinical competence by participating in different CME activities from younger physicians. They participated in as many CME activities as their younger colleagues.

Adult↗
PubMed1989

[Not Available].

Explore the source record for details and available documents.

Canada↗
PubMed1987

Emergency telephone calls: a multiple baseline study using instructional programming.

Three women with Down's syndrome and speech difficulties were taught to discriminate emergency fire situations and subsequently how to contact, with minimal verbal requirements, an emergency agency by telephone. A procedure modelled on Engelmann and Carnine's (1982) guidelines for instructional programs was applied using a multiple baseline design across subjects. Independent ratings of each learner at post-testing and follow-up confirmed the utility of the present program.

Adult↗
PubMed1978

[Present situation and future prospects for epidemiological surveillance within the framework of Quebec new health system (author's transl)].

Epidemiological surveillance in Quebec is part of the integral system of this activity throughout the whole of Canada and the United States. Since surveillance is aimed mainly at the ecosystem of the disease rather than just the cases, the activities are insured from the horizontal point of view by several organisations, aided by various Ministeries (health, agriculture, industry and commerce). The vertical structure (besides the Center for Disease Control in Atlanta as coordinator) includes the federal Laboratory Centre for Disease Control, its epidemiology and surveillance bureaus, as well as its territorial epidemiologists, provincial epidemiologists and their teams. Quebec has recently been given a new health structure, introduced in conjunction with the traditional organisations by the new Departments of Community Health, and the Social Centres of Community Services. This structure which is new to North America is characterised mostly by its close integration with community health. Moreover, it represents an excellent opportunity for developing an epidemiological surveillance complementary to local problems and for heightening their responsibility.

Communicable Disease Control↗