Laboratory studies on the feeding habits, reproduction and development of three phytoseiid species,Typhlodromus pomi, Phytoseius macropilis andAmblyseius finlandicus (Acari: Phytoseiidae), occurring on abandoned apple trees in Ontario, Canada

1986 ◽  
Vol 2 (4) ◽  
pp. 299-313 ◽  
Author(s):  
Hiroshi Amano ◽  
D. A. Chant
Keyword(s):  
Feeding Habits ◽  
Laboratory Studies ◽  
Apple Trees

Studies on Effects of Forest Sprayings with Insecticides, 1952–63, on Fish and Aquatic Invertebrates in New Brunswick Streams: Introduction and Summary

1967 ◽  
Vol 24 (4) ◽  
pp. 701-708 ◽  
Author(s):  
C. J. Kerswill
Keyword(s):  
New Brunswick ◽  
Salmo Salar ◽  
Aquatic Invertebrates ◽  
Salvelinus Fontinalis ◽  
Feeding Habits ◽  
Choristoneura Fumiferana ◽  
Aquatic Insect ◽  
Management Program ◽  
Laboratory Studies ◽  
History Of

This introduces a series of papers on fisheries studies associated with operational and experimental forest spraying, mainly with DDT-in-oil insecticide. It outlines: (a) the history of the spray program developed to counteract an outbreak of the spruce budworm (Choristoneura fumiferana) in New Brunswick; (b) administrative arrangements for developing and coordinating a reasonable research and management program concerning the affected fisheries, mainly for Atlantic salmon (Salmo salar); (c) highlights of field and laboratory studies on effects of insecticide sprayings on caged young salmon and trout (Salvelinus fontinalis), on aquatic insect production, on feeding habits of native young salmon, and on population levels of young salmon.

Laboratory Studies on the Feeding Habits of Seven Species of Ants (Hymenoptera: Formicidae) in Ontario

1963 ◽  
Vol 95 (7) ◽  
pp. 712-715 ◽  
Author(s):  
G. L. Ayre
Keyword(s):  
Feeding Habits ◽  
Control Agent ◽  
Laboratory Studies ◽  
Southern Ontario ◽  
Tapinoma Sessile ◽  
Formica Exsectoides ◽  
Large Populations ◽  
Laboratory Investigations ◽  
Large Living ◽  
Lasius Neoniger

AbstractPreliminary laboratory investigations of the feeding habits of seven species of ants occurring in southern Ontario showed that Camponotus herculeanus (Li.), Crematogaster lineolata (Say) and Formica exsectoides Forel are very predacious and will also eat dead insects. Myrmica americana Weber, Solenopsis molesta (Say) and Tapinoma sessile (Say) are also predacious, but probably because of the small size of the individuals and the colonies they are unable to capture large living insects. Lasius neoniger Emery, a relatively timid ant, may develop large populations and consume considerable numbers of other insects, but it is not recommended as a control agent because it can become troublesome on lawns.

Hydrogen Cyanide Polymers from the Impact of Comet P/Shoemaker-Levy 9 on Jupiter

1997 ◽  
Vol 161 ◽  
pp. 179-187
Author(s):  
Clifford N. Matthews ◽  
Rose A. Pesce-Rodriguez ◽  
Shirley A. Liebman
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Hydrogen Cyanide ◽  
Nitrogen Heterocycles ◽  
Laboratory Studies ◽  
Heterogeneous Solids ◽  
The Many ◽  
Comet Halley ◽  
The Impact ◽  
By Products

AbstractHydrogen cyanide polymers – heterogeneous solids ranging in color from yellow to orange to brown to black – may be among the organic macromolecules most readily formed within the Solar System. The non-volatile black crust of comet Halley, for example, as well as the extensive orangebrown streaks in the atmosphere of Jupiter, might consist largely of such polymers synthesized from HCN formed by photolysis of methane and ammonia, the color observed depending on the concentration of HCN involved. Laboratory studies of these ubiquitous compounds point to the presence of polyamidine structures synthesized directly from hydrogen cyanide. These would be converted by water to polypeptides which can be further hydrolyzed to α-amino acids. Black polymers and multimers with conjugated ladder structures derived from HCN could also be formed and might well be the source of the many nitrogen heterocycles, adenine included, observed after pyrolysis. The dark brown color arising from the impacts of comet P/Shoemaker-Levy 9 on Jupiter might therefore be mainly caused by the presence of HCN polymers, whether originally present, deposited by the impactor or synthesized directly from HCN. Spectroscopic detection of these predicted macromolecules and their hydrolytic and pyrolytic by-products would strengthen significantly the hypothesis that cyanide polymerization is a preferred pathway for prebiotic and extraterrestrial chemistry.

Cognitive Aging in a Precision Sport Context

1996 ◽  
Vol 1 (3) ◽  
pp. 166-179 ◽  
Author(s):  
Bo Molander ◽  
Lars Bäckman
Keyword(s):  
Older Adult ◽  
Cognitive Abilities ◽  
Cognitive Aging ◽  
Motor Performance ◽  
Intervention Programs ◽  
Laboratory Studies ◽  
High Arousal ◽  
Memory And Attention ◽  
Age Related ◽  
Principal Finding

Highly skilled miniature golf players were examined in a series of field and laboratory studies. The principal finding from these studies is that young and young adult players (range = 15-38 years) score equally well or better in competition than in training whereas older adult players (range = 46-73 years) perform worse in competitive events than under training conditions. It was also found that the impairment in motor performance on the part of the older players is associated with age-related deficits in basic cognitive abilities, such as memory and attention. These results support the hypothesis that older players may be able to compensate for age-related deficits under relaxed conditions, but not under conditions of high arousal. The possibility of improving the performance of the older players in stressful situations by means of various intervention programs is discussed.

Automation Surprise

2017 ◽  
Vol 7 (1) ◽  
pp. 28-41 ◽  
Author(s):  
Robert J. de Boer ◽  
Karel Hurts
Keyword(s):  
Flight Control ◽  
Representative Sample ◽  
Aviation Safety ◽  
Control Mode ◽  
Cognitive Errors ◽  
Laboratory Studies ◽  
Airline Pilots ◽  
Flight Operations ◽  
Widespread Phenomenon ◽  
Few Data

Abstract. Automation surprise (AS) has often been associated with aviation safety incidents. Although numerous laboratory studies have been conducted, few data are available from routine flight operations. A survey among a representative sample of 200 Dutch airline pilots was used to determine the prevalence of AS and the severity of its consequences, and to test some of the factors leading to AS. Results show that AS is a relatively widespread phenomenon that occurs three times per year per pilot on average but rarely has serious consequences. In less than 10% of the AS cases that were reviewed, an undesired aircraft state was induced. Reportable occurrences are estimated to occur only once every 1–3 years per pilot. Factors leading to a higher prevalence of AS include less flying experience, increasing complexity of the flight control mode, and flight duty periods of over 8 hr. It is concluded that AS is a manifestation of system and interface complexity rather than cognitive errors.

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