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Biomedical subjects

A Navarro

Publications and source records attributed to A Navarro.

At least 253 records · Page 14Linked to original sources
PubMedDate not supplied

[Comparison of 3 methods for collecting adult anophelines in a risk area of malaria transmission].

Three methods of collecting adult anophelines were comparatively studied in a rural town in Havana Province, during the period comprised between June and September 1986. The methods of capture used were as follows: in resting sites, in human bait and through lactic acid CDC light traps. A greater number of anophelines (F = 6.86; p less than 0.01) was collected on human bait. The capture of 11 species of culicines was reported.

Animals↗
PubMedDate not supplied

[Hematophagous activity of Anopheles vestitipennis Dyar & Knab, 1906 (Diptera: Culicidae)].

The hematophagic activity of Anopheles vestitipennis Dyar and Knab, 1906, was studied in a rural locality during the dry and rain seasons, through inside and outside home collects with human bait at a schedule form 19:00 to 07:00 hours. The species showed preference by inside home food (endophagic) in both seasons. There was 2 maximum activity peaks inside of the buildings, from 23:00 to 24:00 hours and from 02:00 to 03:00 hours (the first one agrees with the peak occurring outside). During the dry season the activity peak outside occurred from 24:00 to 01:00 hours; while inside occurred from 02:00 to 03:00 hours.

Animals↗
PubMedDate not supplied

[Hematophagic rhythm of Simulium quadrivittatum Loew, 1862 (Diptera: Simuliidae)].

A relation between the hematophagic activity of Simulium quadrivittatum and the variation of solar position north of "La Canada" hill (21 degrees 43'N and 82 degrees 54'W), in the central area of the Isle of Youth, was found. Two paraboles were derived. They respond to the equations y = 11.61 + 0.137 S + (-4.727) S2 and y = 17.06 + 0.415 S + (-9.495) S2, for the morning and afternoon values respectively. A higher hematophagic activity, on average, was found in the afternoon (U = 24, P less than 0.05).

Altitude↗
PubMedDate not supplied

[Larval density of Anopheles (N) albimanus Wiedemann, 1821 in relation to phenology of Oryza sativa (Linnaeus) rice].

The larval density of Anopheles (N) albimanus Wiedemann, 1821, is linked with rice phenology in the two crops of the year (summer and winter). It was determined that a higher density agrees with the second stage of the vegetative cycle of the culture named beginning of shooting processes and the formation of the panicular primordium. The number of anopheline larvae was higher in the summer.

Animals↗
PubMedDate not supplied

Determination of arsenic in beer by dry ashing, hydride generation atomic absorption spectroscopy.

A method has been developed for determination of arsenic in beer. Organic matter is destroyed by the dry-ashing technique, the ash is dissolved in HCl, and hydrides of arsenic are generated by addition of sodium borohydride prior to atomization in a flame-heated quartz cell and atomic absorption spectroscopy measurement. The analytical features of the method are detection limit 0.1 ng/g beer, precision 8%, and recovery 97 +/- 7%. The arsenic contents of different brands from Spain and other European countries were analyzed. In all samples, the arsenic levels found were well below maximum levels allowed in Spanish legislation (100 ng/g). The quantities of arsenic in Spanish beers do not differ from those found in foreign beers. No differences were found between bottled and canned beers, and no correlation exists between metal content and original specific gravity of the beers.

Arsenic↗
PubMedDate not supplied

[Non-paraneoplastic polioencephalomyelitis].

A 60-year-old male presented with cerebellar ataxia and ocular flutter which disappeared after ten months of evolution. The patient later had three other different bouts which caused cerebral, brainstem and polyradiculoneuritis-like symptomatology. The disease evolved in 20 months and at necropsy a primary polioencephalomyelitis was found. The remitting and relapsing course of the disease is better explained by an autoimmune-mediated lesion.

Encephalomyelitis↗
PubMedDate not supplied

[Prophylactic treatment of episodic cluster headaches with methysergide and prednisone].

In two consecutive series of 25 cases each suffering from episodic cluster headache, one of the clusters was treated prophylactically in the first series with methysergide and in the other with prednisone. The duration of the clusters under treatment was similar in both series. The results of our study suggest that neither the methysergide nor the prednisone were able to shorten the duration of clusters.

Adolescent↗