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  • 1
    Electronic Resource
    Electronic Resource
    Some observations of sea turtle nesting activity in Costa Rica (1972)
    Springer
    Marine biology 16 (1972), S. 297-309 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Low level aerial observations were used to obtain synoptic records of the distribution of sea turtle nesting activity along both coasts of Costa Rica. Pertinent environmental information was simultaneously recorded including beach characteristics, river effluents, and evidence of coastal currents. Other correlative information was obtained from detailed maps, current charts, and climatological data. On the Caribbean coast, as expected, green turtle (Chelonia mydas) nesting was concentrated on the beaches between the Tortuguero and Parismina Rivers. On the Pacific coast, two major nesting beaches for the Pacific ridley Lepidochelys olivacea were found, each having over 100 thousand turtles aggregated offshore during the peak period between September and November. Aggregations were present at least from July through December. Massed nesting occurs each year on these same beaches and the event is known as the “salida de flota” by the natives of Guanacaste Province. Numerous less important nesting beaches were also found. Nesting density did not correlate well with beach quality but, instead, appeared to be related to the proximity of the beach to offshore currents. Oceanic current systems apparently facilitate the transport of sea turtles to the general vicinity of the important nesting beaches on both coasts of Coata Rica.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00347753
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  • 2
    Electronic Resource
    Electronic Resource
    The nesting of the Pacific ridley turtle Lepidochelys olivacea on Playa Nancite, Costa Rica (1974)
    Springer
    Marine biology 24 (1974), S. 97-107 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A study of the nesting of the Pacific ridley turtle Lepidochelys olivacea was undertaken in Costa Rica on Playa Nancite — one of two beaches on which the authors had, the previous year, discovered large nesting aggregations of this species. During the 3 1/2-month period of this study, approximately 288,000 turtles nested on the 1300 m-long beach. About 99% of these nested during 3 periods of mass-nesting (arribadas). The predictability of the arribadas was investigated by observing and recording environmental parameters with which they may be correlated. The mass-nesting phenomenon, aspects of nesting behavior, and the adaptive advantages of mass-nesting are discussed. During the period of study, nearly 2,000 turtles were tagged, 102 of which were subsequently recovered. Carapace lengths and widths of 251 tagged turtles were measured. The emergence of hatchlings was recorded daily and, from these data, the incubation period and an indication of egg and hatchling survival was obtained. The activities of the various predators on eggs, hatchlings, and adults are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389343
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of Selenium-Supplemented Torula Yeast Diets on Liver-Mediated Mutagenicity of Aflatoxin B1 (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: To determine the effect of dietary selenium on the mutagenicity of aflatoxin B1 (AFB1), male Sprague-Dawley rats were fed rat chow or Torula yeast diets supplemented with 0.0, 0.1, 0.5, 1.0, and 5.0 ppm Se as Na2SeO3, and the 9000 ×g liver supernatants were used in Salmonella/microsome mutagenesis assays. The rats were fed on the diets for 4 wk and, prior to killing, half the rats in each group received 80 mg phenobarbital/kg body weight in their drinking water for four consecutive days. Phenobarbital administration tended to increase the mutagenicity of AFB1 in all dietary treatment groups. This increase was significant only in the chow-fed groups, however. Addition of selenium to the basal diet produced no significant effect on liver-mediated mutagenicity. The liver preparation from chow-fed animals which had received phenobarbital produced the highest mutagenicity of the samples tested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1983.tb14892.x
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  • 4
    Electronic Resource
    Electronic Resource
    Suppressor cells in asthmatic children (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 12 (1982), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Peripheral blood mononuclear cells (PBMC) from thirteen asthmatic children, and from normal control subjects, were pre-incubated with and without concanavalin A (con A), washed, and cultured with fresh allogenic PBMC from healthy donors. The con A pre-treated cells from fifteen of seventeen normal controls clearly suppressed the blast transformation response to con A by normal allogeneic PBMC. However, con A-generated suppressor activity was found in only seven of the asthmatic patients studied, most of whom could be classified as ‘short-term’ asthmatics. It is thus possible that either dysfunction or a reduction of the (con A)-inducible, T-suppressor cell subpopulation in peripheral blood is frequent among ‘long-term’ asthmatic patients. This may suggest that a different pathogenesis may be operating in early-onset, long-continued asthma, when compared with those investigated early in the course of asthma which has begun later in childhood.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1982.tb02536.x
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  • 5
    Electronic Resource
    Electronic Resource
    Fine needle aspiration cytology (FNAC) detection of early renal allograft infection with Candida glabrata—a case report (1999)
    Oxford, UK : Blackwell Science Ltd
    Cytopathology 10 (1999), S. 0 
    Details
    ISSN: 1365-2303
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Introduction
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2303.1999.00181.x
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  • 6
    Electronic Resource
    Electronic Resource
    Intrathecal alfentanil with and without bupivacaine for analgesia in labour (2000)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 55 (2000), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Combined spinal–epidural (CSE) for analgesia in labour is widely used as a method of providing pain relief while minimising motor blockade. Aiming to further reduce the associated motor weakness, we investigated the use of alfentanil alone as the initial intrathecal injection in a double-blind study. Thirty women were randomly allocated to receive either alfentanil 0.25 mg with bupivacaine 2.5 mg intrathecally, or alfentanil 0.25 mg in the same volume. Onset of analgesia did not differ significantly between groups but duration was significantly longer in those receiving alfentanil–bupivacaine (mean 55 min vs. 40 min; p 〈 0.05). Quality of analgesia was satisfactory for all women, although the cumulative analgesia scores were significantly lower in the women receiving the alfentanil–bupivacaine mixture (p = 0.003). More women in the alfentanil–bupivacaine group developed both a sensory level (15/15 vs. 6/15; p 〈 0.01) and sympathetic block (12/15 vs. 4/15; p 〈 0.01). Sixty per cent of women receiving the alfentanil–bupivacaine mixture demonstrated an impaired ability to straight leg raise compared with none of the women in the alfentanil–saline group (p 〈 0.01). The incidence of adverse effects in mother and fetus was similar in both groups. We conclude that intrathecal alfentanil 0.25 mg alone as part of a CSE technique provides rapid analgesia of satisfactory quality without detectable motor blockade.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2044.2000.01547-3.x
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  • 7
    Electronic Resource
    Electronic Resource
    The influence of the diet on the maturation of the immune system (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 53 (1998), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1998.tb04954.x
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  • 8
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    Unknown
    Sixteenth Century Service Music (1924)
    Oxford : Periodicals Archive Online (PAO)
    Music and letters. 5:2 (1924:Apr.) 145 
    Details
    ISSN: 0027-4224
    Topics: Musicology
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:0252-1924-005-02-000005
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  • 9
    Electronic Resource
    Electronic Resource
    The electrochemical fluorination of octanoyl chloride (1979)
    Springer
    Journal of applied electrochemistry 9 (1979), S. 685-697 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A study of the electrochemical fluorination of octanoic acid halides has been made using techniques involving careful ‘preparation’ of the anodes prior to the introduction of organic substrate, followed by fluorination under controlled conditions. Studies were conducted on both bench scale and pilot plant scale operations. Reaction parameters are described in detail. The principal products were perfluorooctanoyl fluoride and a mixture of perfluorocylic ethers. The experiments established that reproducibility of the results could be achieved and that, by proper attention to reaction conditions, breakdown of the carbon skeleton was minimized; the variation of product ratios could be regulated to optimize the yield of desired materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00614962
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  • 10
    Electronic Resource
    Electronic Resource
    The electrochemical fluorination of propene (1976)
    Springer
    Journal of applied electrochemistry 6 (1976), S. 23-32 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A study of the electrochemical fluorination of propene under rigidly controlled conditions has led to the development of a number of techniques which improve the reproducibility and chemical yields of the process. It has been shown that controlled ‘conditioning’ of the anode was critical to the reproducibility of the reactions. Control of the anode potential within specific limits during fluorination was essential to minimize breakdown of the organic compounds. The experimental data are discussed within the context of the possible reaction mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01058866
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